[12177] | 1 | // Copyright 2007, Google Inc. |
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| 2 | // All rights reserved. |
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| 3 | // |
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| 4 | // Redistribution and use in source and binary forms, with or without |
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| 5 | // modification, are permitted provided that the following conditions are |
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| 6 | // met: |
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| 7 | // |
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| 8 | // * Redistributions of source code must retain the above copyright |
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| 9 | // notice, this list of conditions and the following disclaimer. |
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| 10 | // * Redistributions in binary form must reproduce the above |
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| 11 | // copyright notice, this list of conditions and the following disclaimer |
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| 12 | // in the documentation and/or other materials provided with the |
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| 13 | // distribution. |
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| 14 | // * Neither the name of Google Inc. nor the names of its |
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| 15 | // contributors may be used to endorse or promote products derived from |
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| 16 | // this software without specific prior written permission. |
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| 17 | // |
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| 18 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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| 19 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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| 20 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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| 21 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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| 22 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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| 23 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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| 24 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 25 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 26 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 27 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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| 28 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 29 | // |
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| 30 | // Author: wan@google.com (Zhanyong Wan) |
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| 31 | |
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| 32 | // Google Mock - a framework for writing C++ mock classes. |
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| 33 | // |
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| 34 | // This file implements the ON_CALL() and EXPECT_CALL() macros. |
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| 35 | // |
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| 36 | // A user can use the ON_CALL() macro to specify the default action of |
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| 37 | // a mock method. The syntax is: |
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| 38 | // |
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| 39 | // ON_CALL(mock_object, Method(argument-matchers)) |
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| 40 | // .With(multi-argument-matcher) |
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| 41 | // .WillByDefault(action); |
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| 42 | // |
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| 43 | // where the .With() clause is optional. |
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| 44 | // |
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| 45 | // A user can use the EXPECT_CALL() macro to specify an expectation on |
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| 46 | // a mock method. The syntax is: |
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| 47 | // |
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| 48 | // EXPECT_CALL(mock_object, Method(argument-matchers)) |
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| 49 | // .With(multi-argument-matchers) |
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| 50 | // .Times(cardinality) |
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| 51 | // .InSequence(sequences) |
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| 52 | // .After(expectations) |
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| 53 | // .WillOnce(action) |
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| 54 | // .WillRepeatedly(action) |
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| 55 | // .RetiresOnSaturation(); |
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| 56 | // |
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| 57 | // where all clauses are optional, and .InSequence()/.After()/ |
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| 58 | // .WillOnce() can appear any number of times. |
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| 59 | |
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| 60 | #ifndef GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_ |
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| 61 | #define GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_ |
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| 62 | |
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| 63 | #include <map> |
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| 64 | #include <set> |
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| 65 | #include <sstream> |
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| 66 | #include <string> |
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| 67 | #include <vector> |
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| 68 | |
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| 69 | #include "gmock/gmock-actions.h" |
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| 70 | #include "gmock/gmock-cardinalities.h" |
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| 71 | #include "gmock/gmock-matchers.h" |
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| 72 | #include "gmock/internal/gmock-internal-utils.h" |
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| 73 | #include "gmock/internal/gmock-port.h" |
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| 74 | #include "gtest/gtest.h" |
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| 75 | |
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| 76 | namespace testing { |
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| 77 | |
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| 78 | // An abstract handle of an expectation. |
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| 79 | class Expectation; |
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| 80 | |
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| 81 | // A set of expectation handles. |
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| 82 | class ExpectationSet; |
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| 83 | |
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| 84 | // Anything inside the 'internal' namespace IS INTERNAL IMPLEMENTATION |
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| 85 | // and MUST NOT BE USED IN USER CODE!!! |
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| 86 | namespace internal { |
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| 87 | |
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| 88 | // Implements a mock function. |
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| 89 | template <typename F> class FunctionMocker; |
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| 90 | |
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| 91 | // Base class for expectations. |
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| 92 | class ExpectationBase; |
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| 93 | |
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| 94 | // Implements an expectation. |
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| 95 | template <typename F> class TypedExpectation; |
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| 96 | |
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| 97 | // Helper class for testing the Expectation class template. |
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| 98 | class ExpectationTester; |
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| 99 | |
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| 100 | // Base class for function mockers. |
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| 101 | template <typename F> class FunctionMockerBase; |
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| 102 | |
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| 103 | // Protects the mock object registry (in class Mock), all function |
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| 104 | // mockers, and all expectations. |
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| 105 | // |
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| 106 | // The reason we don't use more fine-grained protection is: when a |
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| 107 | // mock function Foo() is called, it needs to consult its expectations |
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| 108 | // to see which one should be picked. If another thread is allowed to |
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| 109 | // call a mock function (either Foo() or a different one) at the same |
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| 110 | // time, it could affect the "retired" attributes of Foo()'s |
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| 111 | // expectations when InSequence() is used, and thus affect which |
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| 112 | // expectation gets picked. Therefore, we sequence all mock function |
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| 113 | // calls to ensure the integrity of the mock objects' states. |
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| 114 | GTEST_DECLARE_STATIC_MUTEX_(g_gmock_mutex); |
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| 115 | |
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| 116 | // Untyped base class for ActionResultHolder<R>. |
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| 117 | class UntypedActionResultHolderBase; |
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| 118 | |
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| 119 | // Abstract base class of FunctionMockerBase. This is the |
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| 120 | // type-agnostic part of the function mocker interface. Its pure |
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| 121 | // virtual methods are implemented by FunctionMockerBase. |
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| 122 | class UntypedFunctionMockerBase { |
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| 123 | public: |
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| 124 | UntypedFunctionMockerBase(); |
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| 125 | virtual ~UntypedFunctionMockerBase(); |
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| 126 | |
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| 127 | // Verifies that all expectations on this mock function have been |
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| 128 | // satisfied. Reports one or more Google Test non-fatal failures |
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| 129 | // and returns false if not. |
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| 130 | // L >= g_gmock_mutex |
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| 131 | bool VerifyAndClearExpectationsLocked(); |
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| 132 | |
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| 133 | // Clears the ON_CALL()s set on this mock function. |
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| 134 | // L >= g_gmock_mutex |
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| 135 | virtual void ClearDefaultActionsLocked() = 0; |
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| 136 | |
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| 137 | // In all of the following Untyped* functions, it's the caller's |
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| 138 | // responsibility to guarantee the correctness of the arguments' |
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| 139 | // types. |
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| 140 | |
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| 141 | // Performs the default action with the given arguments and returns |
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| 142 | // the action's result. The call description string will be used in |
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| 143 | // the error message to describe the call in the case the default |
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| 144 | // action fails. |
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| 145 | // L = * |
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| 146 | virtual UntypedActionResultHolderBase* UntypedPerformDefaultAction( |
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| 147 | const void* untyped_args, |
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| 148 | const string& call_description) const = 0; |
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| 149 | |
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| 150 | // Performs the given action with the given arguments and returns |
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| 151 | // the action's result. |
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| 152 | // L = * |
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| 153 | virtual UntypedActionResultHolderBase* UntypedPerformAction( |
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| 154 | const void* untyped_action, |
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| 155 | const void* untyped_args) const = 0; |
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| 156 | |
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| 157 | // Writes a message that the call is uninteresting (i.e. neither |
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| 158 | // explicitly expected nor explicitly unexpected) to the given |
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| 159 | // ostream. |
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| 160 | // L < g_gmock_mutex |
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| 161 | virtual void UntypedDescribeUninterestingCall(const void* untyped_args, |
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| 162 | ::std::ostream* os) const = 0; |
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| 163 | |
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| 164 | // Returns the expectation that matches the given function arguments |
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| 165 | // (or NULL is there's no match); when a match is found, |
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| 166 | // untyped_action is set to point to the action that should be |
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| 167 | // performed (or NULL if the action is "do default"), and |
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| 168 | // is_excessive is modified to indicate whether the call exceeds the |
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| 169 | // expected number. |
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| 170 | // L < g_gmock_mutex |
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| 171 | virtual const ExpectationBase* UntypedFindMatchingExpectation( |
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| 172 | const void* untyped_args, |
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| 173 | const void** untyped_action, bool* is_excessive, |
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| 174 | ::std::ostream* what, ::std::ostream* why) = 0; |
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| 175 | |
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| 176 | // Prints the given function arguments to the ostream. |
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| 177 | virtual void UntypedPrintArgs(const void* untyped_args, |
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| 178 | ::std::ostream* os) const = 0; |
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| 179 | |
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| 180 | // Sets the mock object this mock method belongs to, and registers |
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| 181 | // this information in the global mock registry. Will be called |
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| 182 | // whenever an EXPECT_CALL() or ON_CALL() is executed on this mock |
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| 183 | // method. |
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| 184 | // TODO(wan@google.com): rename to SetAndRegisterOwner(). |
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| 185 | // L < g_gmock_mutex |
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| 186 | void RegisterOwner(const void* mock_obj); |
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| 187 | |
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| 188 | // Sets the mock object this mock method belongs to, and sets the |
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| 189 | // name of the mock function. Will be called upon each invocation |
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| 190 | // of this mock function. |
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| 191 | // L < g_gmock_mutex |
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| 192 | void SetOwnerAndName(const void* mock_obj, const char* name); |
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| 193 | |
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| 194 | // Returns the mock object this mock method belongs to. Must be |
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| 195 | // called after RegisterOwner() or SetOwnerAndName() has been |
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| 196 | // called. |
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| 197 | // L < g_gmock_mutex |
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| 198 | const void* MockObject() const; |
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| 199 | |
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| 200 | // Returns the name of this mock method. Must be called after |
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| 201 | // SetOwnerAndName() has been called. |
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| 202 | // L < g_gmock_mutex |
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| 203 | const char* Name() const; |
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| 204 | |
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| 205 | // Returns the result of invoking this mock function with the given |
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| 206 | // arguments. This function can be safely called from multiple |
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| 207 | // threads concurrently. The caller is responsible for deleting the |
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| 208 | // result. |
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| 209 | // L < g_gmock_mutex |
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| 210 | const UntypedActionResultHolderBase* UntypedInvokeWith( |
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| 211 | const void* untyped_args); |
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| 212 | |
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| 213 | protected: |
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| 214 | typedef std::vector<const void*> UntypedOnCallSpecs; |
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| 215 | |
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| 216 | typedef std::vector<internal::linked_ptr<ExpectationBase> > |
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| 217 | UntypedExpectations; |
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| 218 | |
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| 219 | // Returns an Expectation object that references and co-owns exp, |
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| 220 | // which must be an expectation on this mock function. |
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| 221 | Expectation GetHandleOf(ExpectationBase* exp); |
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| 222 | |
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| 223 | // Address of the mock object this mock method belongs to. Only |
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| 224 | // valid after this mock method has been called or |
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| 225 | // ON_CALL/EXPECT_CALL has been invoked on it. |
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| 226 | const void* mock_obj_; // Protected by g_gmock_mutex. |
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| 227 | |
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| 228 | // Name of the function being mocked. Only valid after this mock |
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| 229 | // method has been called. |
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| 230 | const char* name_; // Protected by g_gmock_mutex. |
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| 231 | |
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| 232 | // All default action specs for this function mocker. |
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| 233 | UntypedOnCallSpecs untyped_on_call_specs_; |
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| 234 | |
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| 235 | // All expectations for this function mocker. |
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| 236 | UntypedExpectations untyped_expectations_; |
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| 237 | }; // class UntypedFunctionMockerBase |
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| 238 | |
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| 239 | // Untyped base class for OnCallSpec<F>. |
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| 240 | class UntypedOnCallSpecBase { |
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| 241 | public: |
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| 242 | // The arguments are the location of the ON_CALL() statement. |
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| 243 | UntypedOnCallSpecBase(const char* a_file, int a_line) |
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| 244 | : file_(a_file), line_(a_line), last_clause_(kNone) {} |
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| 245 | |
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| 246 | // Where in the source file was the default action spec defined? |
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| 247 | const char* file() const { return file_; } |
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| 248 | int line() const { return line_; } |
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| 249 | |
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| 250 | protected: |
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| 251 | // Gives each clause in the ON_CALL() statement a name. |
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| 252 | enum Clause { |
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| 253 | // Do not change the order of the enum members! The run-time |
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| 254 | // syntax checking relies on it. |
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| 255 | kNone, |
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| 256 | kWith, |
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| 257 | kWillByDefault |
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| 258 | }; |
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| 259 | |
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| 260 | // Asserts that the ON_CALL() statement has a certain property. |
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| 261 | void AssertSpecProperty(bool property, const string& failure_message) const { |
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| 262 | Assert(property, file_, line_, failure_message); |
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| 263 | } |
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| 264 | |
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| 265 | // Expects that the ON_CALL() statement has a certain property. |
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| 266 | void ExpectSpecProperty(bool property, const string& failure_message) const { |
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| 267 | Expect(property, file_, line_, failure_message); |
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| 268 | } |
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| 269 | |
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| 270 | const char* file_; |
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| 271 | int line_; |
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| 272 | |
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| 273 | // The last clause in the ON_CALL() statement as seen so far. |
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| 274 | // Initially kNone and changes as the statement is parsed. |
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| 275 | Clause last_clause_; |
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| 276 | }; // class UntypedOnCallSpecBase |
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| 277 | |
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| 278 | // This template class implements an ON_CALL spec. |
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| 279 | template <typename F> |
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| 280 | class OnCallSpec : public UntypedOnCallSpecBase { |
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| 281 | public: |
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| 282 | typedef typename Function<F>::ArgumentTuple ArgumentTuple; |
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| 283 | typedef typename Function<F>::ArgumentMatcherTuple ArgumentMatcherTuple; |
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| 284 | |
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| 285 | // Constructs an OnCallSpec object from the information inside |
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| 286 | // the parenthesis of an ON_CALL() statement. |
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| 287 | OnCallSpec(const char* a_file, int a_line, |
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| 288 | const ArgumentMatcherTuple& matchers) |
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| 289 | : UntypedOnCallSpecBase(a_file, a_line), |
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| 290 | matchers_(matchers), |
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| 291 | // By default, extra_matcher_ should match anything. However, |
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| 292 | // we cannot initialize it with _ as that triggers a compiler |
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| 293 | // bug in Symbian's C++ compiler (cannot decide between two |
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| 294 | // overloaded constructors of Matcher<const ArgumentTuple&>). |
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| 295 | extra_matcher_(A<const ArgumentTuple&>()) { |
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| 296 | } |
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| 297 | |
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| 298 | // Implements the .With() clause. |
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| 299 | OnCallSpec& With(const Matcher<const ArgumentTuple&>& m) { |
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| 300 | // Makes sure this is called at most once. |
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| 301 | ExpectSpecProperty(last_clause_ < kWith, |
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| 302 | ".With() cannot appear " |
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| 303 | "more than once in an ON_CALL()."); |
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| 304 | last_clause_ = kWith; |
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| 305 | |
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| 306 | extra_matcher_ = m; |
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| 307 | return *this; |
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| 308 | } |
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| 309 | |
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| 310 | // Implements the .WillByDefault() clause. |
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| 311 | OnCallSpec& WillByDefault(const Action<F>& action) { |
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| 312 | ExpectSpecProperty(last_clause_ < kWillByDefault, |
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| 313 | ".WillByDefault() must appear " |
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| 314 | "exactly once in an ON_CALL()."); |
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| 315 | last_clause_ = kWillByDefault; |
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| 316 | |
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| 317 | ExpectSpecProperty(!action.IsDoDefault(), |
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| 318 | "DoDefault() cannot be used in ON_CALL()."); |
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| 319 | action_ = action; |
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| 320 | return *this; |
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| 321 | } |
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| 322 | |
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| 323 | // Returns true iff the given arguments match the matchers. |
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| 324 | bool Matches(const ArgumentTuple& args) const { |
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| 325 | return TupleMatches(matchers_, args) && extra_matcher_.Matches(args); |
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| 326 | } |
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| 327 | |
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| 328 | // Returns the action specified by the user. |
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| 329 | const Action<F>& GetAction() const { |
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| 330 | AssertSpecProperty(last_clause_ == kWillByDefault, |
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| 331 | ".WillByDefault() must appear exactly " |
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| 332 | "once in an ON_CALL()."); |
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| 333 | return action_; |
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| 334 | } |
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| 335 | |
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| 336 | private: |
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| 337 | // The information in statement |
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| 338 | // |
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| 339 | // ON_CALL(mock_object, Method(matchers)) |
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| 340 | // .With(multi-argument-matcher) |
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| 341 | // .WillByDefault(action); |
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| 342 | // |
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| 343 | // is recorded in the data members like this: |
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| 344 | // |
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| 345 | // source file that contains the statement => file_ |
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| 346 | // line number of the statement => line_ |
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| 347 | // matchers => matchers_ |
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| 348 | // multi-argument-matcher => extra_matcher_ |
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| 349 | // action => action_ |
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| 350 | ArgumentMatcherTuple matchers_; |
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| 351 | Matcher<const ArgumentTuple&> extra_matcher_; |
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| 352 | Action<F> action_; |
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| 353 | }; // class OnCallSpec |
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| 354 | |
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| 355 | // Possible reactions on uninteresting calls. TODO(wan@google.com): |
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| 356 | // rename the enum values to the kFoo style. |
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| 357 | enum CallReaction { |
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| 358 | ALLOW, |
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| 359 | WARN, |
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| 360 | FAIL |
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| 361 | }; |
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| 362 | |
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| 363 | } // namespace internal |
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| 364 | |
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| 365 | // Utilities for manipulating mock objects. |
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| 366 | class Mock { |
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| 367 | public: |
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| 368 | // The following public methods can be called concurrently. |
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| 369 | |
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| 370 | // Tells Google Mock to ignore mock_obj when checking for leaked |
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| 371 | // mock objects. |
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| 372 | static void AllowLeak(const void* mock_obj); |
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| 373 | |
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| 374 | // Verifies and clears all expectations on the given mock object. |
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| 375 | // If the expectations aren't satisfied, generates one or more |
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| 376 | // Google Test non-fatal failures and returns false. |
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| 377 | static bool VerifyAndClearExpectations(void* mock_obj); |
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| 378 | |
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| 379 | // Verifies all expectations on the given mock object and clears its |
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| 380 | // default actions and expectations. Returns true iff the |
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| 381 | // verification was successful. |
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| 382 | static bool VerifyAndClear(void* mock_obj); |
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| 383 | private: |
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| 384 | friend class internal::UntypedFunctionMockerBase; |
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| 385 | |
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| 386 | // Needed for a function mocker to register itself (so that we know |
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| 387 | // how to clear a mock object). |
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| 388 | template <typename F> |
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| 389 | friend class internal::FunctionMockerBase; |
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| 390 | |
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| 391 | template <typename M> |
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| 392 | friend class NiceMock; |
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| 393 | |
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| 394 | template <typename M> |
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| 395 | friend class StrictMock; |
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| 396 | |
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| 397 | // Tells Google Mock to allow uninteresting calls on the given mock |
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| 398 | // object. |
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| 399 | // L < g_gmock_mutex |
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| 400 | static void AllowUninterestingCalls(const void* mock_obj); |
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| 401 | |
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| 402 | // Tells Google Mock to warn the user about uninteresting calls on |
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| 403 | // the given mock object. |
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| 404 | // L < g_gmock_mutex |
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| 405 | static void WarnUninterestingCalls(const void* mock_obj); |
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| 406 | |
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| 407 | // Tells Google Mock to fail uninteresting calls on the given mock |
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| 408 | // object. |
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| 409 | // L < g_gmock_mutex |
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| 410 | static void FailUninterestingCalls(const void* mock_obj); |
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| 411 | |
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| 412 | // Tells Google Mock the given mock object is being destroyed and |
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| 413 | // its entry in the call-reaction table should be removed. |
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| 414 | // L < g_gmock_mutex |
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| 415 | static void UnregisterCallReaction(const void* mock_obj); |
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| 416 | |
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| 417 | // Returns the reaction Google Mock will have on uninteresting calls |
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| 418 | // made on the given mock object. |
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| 419 | // L < g_gmock_mutex |
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| 420 | static internal::CallReaction GetReactionOnUninterestingCalls( |
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| 421 | const void* mock_obj); |
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| 422 | |
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| 423 | // Verifies that all expectations on the given mock object have been |
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| 424 | // satisfied. Reports one or more Google Test non-fatal failures |
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| 425 | // and returns false if not. |
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| 426 | // L >= g_gmock_mutex |
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| 427 | static bool VerifyAndClearExpectationsLocked(void* mock_obj); |
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| 428 | |
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| 429 | // Clears all ON_CALL()s set on the given mock object. |
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| 430 | // L >= g_gmock_mutex |
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| 431 | static void ClearDefaultActionsLocked(void* mock_obj); |
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| 432 | |
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| 433 | // Registers a mock object and a mock method it owns. |
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| 434 | // L < g_gmock_mutex |
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| 435 | static void Register(const void* mock_obj, |
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| 436 | internal::UntypedFunctionMockerBase* mocker); |
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| 437 | |
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| 438 | // Tells Google Mock where in the source code mock_obj is used in an |
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| 439 | // ON_CALL or EXPECT_CALL. In case mock_obj is leaked, this |
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| 440 | // information helps the user identify which object it is. |
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| 441 | // L < g_gmock_mutex |
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| 442 | static void RegisterUseByOnCallOrExpectCall( |
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| 443 | const void* mock_obj, const char* file, int line); |
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| 444 | |
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| 445 | // Unregisters a mock method; removes the owning mock object from |
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| 446 | // the registry when the last mock method associated with it has |
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| 447 | // been unregistered. This is called only in the destructor of |
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| 448 | // FunctionMockerBase. |
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| 449 | // L >= g_gmock_mutex |
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| 450 | static void UnregisterLocked(internal::UntypedFunctionMockerBase* mocker); |
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| 451 | }; // class Mock |
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| 452 | |
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| 453 | // An abstract handle of an expectation. Useful in the .After() |
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| 454 | // clause of EXPECT_CALL() for setting the (partial) order of |
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| 455 | // expectations. The syntax: |
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| 456 | // |
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| 457 | // Expectation e1 = EXPECT_CALL(...)...; |
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| 458 | // EXPECT_CALL(...).After(e1)...; |
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| 459 | // |
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| 460 | // sets two expectations where the latter can only be matched after |
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| 461 | // the former has been satisfied. |
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| 462 | // |
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| 463 | // Notes: |
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| 464 | // - This class is copyable and has value semantics. |
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| 465 | // - Constness is shallow: a const Expectation object itself cannot |
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| 466 | // be modified, but the mutable methods of the ExpectationBase |
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| 467 | // object it references can be called via expectation_base(). |
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| 468 | // - The constructors and destructor are defined out-of-line because |
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| 469 | // the Symbian WINSCW compiler wants to otherwise instantiate them |
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| 470 | // when it sees this class definition, at which point it doesn't have |
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| 471 | // ExpectationBase available yet, leading to incorrect destruction |
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| 472 | // in the linked_ptr (or compilation errors if using a checking |
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| 473 | // linked_ptr). |
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| 474 | class Expectation { |
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| 475 | public: |
---|
| 476 | // Constructs a null object that doesn't reference any expectation. |
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| 477 | Expectation(); |
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| 478 | |
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| 479 | ~Expectation(); |
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| 480 | |
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| 481 | // This single-argument ctor must not be explicit, in order to support the |
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| 482 | // Expectation e = EXPECT_CALL(...); |
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| 483 | // syntax. |
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| 484 | // |
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| 485 | // A TypedExpectation object stores its pre-requisites as |
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| 486 | // Expectation objects, and needs to call the non-const Retire() |
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| 487 | // method on the ExpectationBase objects they reference. Therefore |
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| 488 | // Expectation must receive a *non-const* reference to the |
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| 489 | // ExpectationBase object. |
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| 490 | Expectation(internal::ExpectationBase& exp); // NOLINT |
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| 491 | |
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| 492 | // The compiler-generated copy ctor and operator= work exactly as |
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| 493 | // intended, so we don't need to define our own. |
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| 494 | |
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| 495 | // Returns true iff rhs references the same expectation as this object does. |
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| 496 | bool operator==(const Expectation& rhs) const { |
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| 497 | return expectation_base_ == rhs.expectation_base_; |
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| 498 | } |
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| 499 | |
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| 500 | bool operator!=(const Expectation& rhs) const { return !(*this == rhs); } |
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| 501 | |
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| 502 | private: |
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| 503 | friend class ExpectationSet; |
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| 504 | friend class Sequence; |
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| 505 | friend class ::testing::internal::ExpectationBase; |
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| 506 | friend class ::testing::internal::UntypedFunctionMockerBase; |
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| 507 | |
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| 508 | template <typename F> |
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| 509 | friend class ::testing::internal::FunctionMockerBase; |
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| 510 | |
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| 511 | template <typename F> |
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| 512 | friend class ::testing::internal::TypedExpectation; |
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| 513 | |
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| 514 | // This comparator is needed for putting Expectation objects into a set. |
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| 515 | class Less { |
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| 516 | public: |
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| 517 | bool operator()(const Expectation& lhs, const Expectation& rhs) const { |
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| 518 | return lhs.expectation_base_.get() < rhs.expectation_base_.get(); |
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| 519 | } |
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| 520 | }; |
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| 521 | |
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| 522 | typedef ::std::set<Expectation, Less> Set; |
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| 523 | |
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| 524 | Expectation( |
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| 525 | const internal::linked_ptr<internal::ExpectationBase>& expectation_base); |
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| 526 | |
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| 527 | // Returns the expectation this object references. |
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| 528 | const internal::linked_ptr<internal::ExpectationBase>& |
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| 529 | expectation_base() const { |
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| 530 | return expectation_base_; |
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| 531 | } |
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| 532 | |
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| 533 | // A linked_ptr that co-owns the expectation this handle references. |
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| 534 | internal::linked_ptr<internal::ExpectationBase> expectation_base_; |
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| 535 | }; |
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| 536 | |
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| 537 | // A set of expectation handles. Useful in the .After() clause of |
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| 538 | // EXPECT_CALL() for setting the (partial) order of expectations. The |
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| 539 | // syntax: |
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| 540 | // |
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| 541 | // ExpectationSet es; |
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| 542 | // es += EXPECT_CALL(...)...; |
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| 543 | // es += EXPECT_CALL(...)...; |
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| 544 | // EXPECT_CALL(...).After(es)...; |
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| 545 | // |
---|
| 546 | // sets three expectations where the last one can only be matched |
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| 547 | // after the first two have both been satisfied. |
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| 548 | // |
---|
| 549 | // This class is copyable and has value semantics. |
---|
| 550 | class ExpectationSet { |
---|
| 551 | public: |
---|
| 552 | // A bidirectional iterator that can read a const element in the set. |
---|
| 553 | typedef Expectation::Set::const_iterator const_iterator; |
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| 554 | |
---|
| 555 | // An object stored in the set. This is an alias of Expectation. |
---|
| 556 | typedef Expectation::Set::value_type value_type; |
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| 557 | |
---|
| 558 | // Constructs an empty set. |
---|
| 559 | ExpectationSet() {} |
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| 560 | |
---|
| 561 | // This single-argument ctor must not be explicit, in order to support the |
---|
| 562 | // ExpectationSet es = EXPECT_CALL(...); |
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| 563 | // syntax. |
---|
| 564 | ExpectationSet(internal::ExpectationBase& exp) { // NOLINT |
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| 565 | *this += Expectation(exp); |
---|
| 566 | } |
---|
| 567 | |
---|
| 568 | // This single-argument ctor implements implicit conversion from |
---|
| 569 | // Expectation and thus must not be explicit. This allows either an |
---|
| 570 | // Expectation or an ExpectationSet to be used in .After(). |
---|
| 571 | ExpectationSet(const Expectation& e) { // NOLINT |
---|
| 572 | *this += e; |
---|
| 573 | } |
---|
| 574 | |
---|
| 575 | // The compiler-generator ctor and operator= works exactly as |
---|
| 576 | // intended, so we don't need to define our own. |
---|
| 577 | |
---|
| 578 | // Returns true iff rhs contains the same set of Expectation objects |
---|
| 579 | // as this does. |
---|
| 580 | bool operator==(const ExpectationSet& rhs) const { |
---|
| 581 | return expectations_ == rhs.expectations_; |
---|
| 582 | } |
---|
| 583 | |
---|
| 584 | bool operator!=(const ExpectationSet& rhs) const { return !(*this == rhs); } |
---|
| 585 | |
---|
| 586 | // Implements the syntax |
---|
| 587 | // expectation_set += EXPECT_CALL(...); |
---|
| 588 | ExpectationSet& operator+=(const Expectation& e) { |
---|
| 589 | expectations_.insert(e); |
---|
| 590 | return *this; |
---|
| 591 | } |
---|
| 592 | |
---|
| 593 | int size() const { return static_cast<int>(expectations_.size()); } |
---|
| 594 | |
---|
| 595 | const_iterator begin() const { return expectations_.begin(); } |
---|
| 596 | const_iterator end() const { return expectations_.end(); } |
---|
| 597 | |
---|
| 598 | private: |
---|
| 599 | Expectation::Set expectations_; |
---|
| 600 | }; |
---|
| 601 | |
---|
| 602 | |
---|
| 603 | // Sequence objects are used by a user to specify the relative order |
---|
| 604 | // in which the expectations should match. They are copyable (we rely |
---|
| 605 | // on the compiler-defined copy constructor and assignment operator). |
---|
| 606 | class Sequence { |
---|
| 607 | public: |
---|
| 608 | // Constructs an empty sequence. |
---|
| 609 | Sequence() : last_expectation_(new Expectation) {} |
---|
| 610 | |
---|
| 611 | // Adds an expectation to this sequence. The caller must ensure |
---|
| 612 | // that no other thread is accessing this Sequence object. |
---|
| 613 | void AddExpectation(const Expectation& expectation) const; |
---|
| 614 | |
---|
| 615 | private: |
---|
| 616 | // The last expectation in this sequence. We use a linked_ptr here |
---|
| 617 | // because Sequence objects are copyable and we want the copies to |
---|
| 618 | // be aliases. The linked_ptr allows the copies to co-own and share |
---|
| 619 | // the same Expectation object. |
---|
| 620 | internal::linked_ptr<Expectation> last_expectation_; |
---|
| 621 | }; // class Sequence |
---|
| 622 | |
---|
| 623 | // An object of this type causes all EXPECT_CALL() statements |
---|
| 624 | // encountered in its scope to be put in an anonymous sequence. The |
---|
| 625 | // work is done in the constructor and destructor. You should only |
---|
| 626 | // create an InSequence object on the stack. |
---|
| 627 | // |
---|
| 628 | // The sole purpose for this class is to support easy definition of |
---|
| 629 | // sequential expectations, e.g. |
---|
| 630 | // |
---|
| 631 | // { |
---|
| 632 | // InSequence dummy; // The name of the object doesn't matter. |
---|
| 633 | // |
---|
| 634 | // // The following expectations must match in the order they appear. |
---|
| 635 | // EXPECT_CALL(a, Bar())...; |
---|
| 636 | // EXPECT_CALL(a, Baz())...; |
---|
| 637 | // ... |
---|
| 638 | // EXPECT_CALL(b, Xyz())...; |
---|
| 639 | // } |
---|
| 640 | // |
---|
| 641 | // You can create InSequence objects in multiple threads, as long as |
---|
| 642 | // they are used to affect different mock objects. The idea is that |
---|
| 643 | // each thread can create and set up its own mocks as if it's the only |
---|
| 644 | // thread. However, for clarity of your tests we recommend you to set |
---|
| 645 | // up mocks in the main thread unless you have a good reason not to do |
---|
| 646 | // so. |
---|
| 647 | class InSequence { |
---|
| 648 | public: |
---|
| 649 | InSequence(); |
---|
| 650 | ~InSequence(); |
---|
| 651 | private: |
---|
| 652 | bool sequence_created_; |
---|
| 653 | |
---|
| 654 | GTEST_DISALLOW_COPY_AND_ASSIGN_(InSequence); // NOLINT |
---|
| 655 | } GTEST_ATTRIBUTE_UNUSED_; |
---|
| 656 | |
---|
| 657 | namespace internal { |
---|
| 658 | |
---|
| 659 | // Points to the implicit sequence introduced by a living InSequence |
---|
| 660 | // object (if any) in the current thread or NULL. |
---|
| 661 | extern ThreadLocal<Sequence*> g_gmock_implicit_sequence; |
---|
| 662 | |
---|
| 663 | // Base class for implementing expectations. |
---|
| 664 | // |
---|
| 665 | // There are two reasons for having a type-agnostic base class for |
---|
| 666 | // Expectation: |
---|
| 667 | // |
---|
| 668 | // 1. We need to store collections of expectations of different |
---|
| 669 | // types (e.g. all pre-requisites of a particular expectation, all |
---|
| 670 | // expectations in a sequence). Therefore these expectation objects |
---|
| 671 | // must share a common base class. |
---|
| 672 | // |
---|
| 673 | // 2. We can avoid binary code bloat by moving methods not depending |
---|
| 674 | // on the template argument of Expectation to the base class. |
---|
| 675 | // |
---|
| 676 | // This class is internal and mustn't be used by user code directly. |
---|
| 677 | class ExpectationBase { |
---|
| 678 | public: |
---|
| 679 | // source_text is the EXPECT_CALL(...) source that created this Expectation. |
---|
| 680 | ExpectationBase(const char* file, int line, const string& source_text); |
---|
| 681 | |
---|
| 682 | virtual ~ExpectationBase(); |
---|
| 683 | |
---|
| 684 | // Where in the source file was the expectation spec defined? |
---|
| 685 | const char* file() const { return file_; } |
---|
| 686 | int line() const { return line_; } |
---|
| 687 | const char* source_text() const { return source_text_.c_str(); } |
---|
| 688 | // Returns the cardinality specified in the expectation spec. |
---|
| 689 | const Cardinality& cardinality() const { return cardinality_; } |
---|
| 690 | |
---|
| 691 | // Describes the source file location of this expectation. |
---|
| 692 | void DescribeLocationTo(::std::ostream* os) const { |
---|
| 693 | *os << FormatFileLocation(file(), line()) << " "; |
---|
| 694 | } |
---|
| 695 | |
---|
| 696 | // Describes how many times a function call matching this |
---|
| 697 | // expectation has occurred. |
---|
| 698 | // L >= g_gmock_mutex |
---|
| 699 | void DescribeCallCountTo(::std::ostream* os) const; |
---|
| 700 | |
---|
| 701 | // If this mock method has an extra matcher (i.e. .With(matcher)), |
---|
| 702 | // describes it to the ostream. |
---|
| 703 | virtual void MaybeDescribeExtraMatcherTo(::std::ostream* os) = 0; |
---|
| 704 | |
---|
| 705 | protected: |
---|
| 706 | friend class ::testing::Expectation; |
---|
| 707 | friend class UntypedFunctionMockerBase; |
---|
| 708 | |
---|
| 709 | enum Clause { |
---|
| 710 | // Don't change the order of the enum members! |
---|
| 711 | kNone, |
---|
| 712 | kWith, |
---|
| 713 | kTimes, |
---|
| 714 | kInSequence, |
---|
| 715 | kAfter, |
---|
| 716 | kWillOnce, |
---|
| 717 | kWillRepeatedly, |
---|
| 718 | kRetiresOnSaturation |
---|
| 719 | }; |
---|
| 720 | |
---|
| 721 | typedef std::vector<const void*> UntypedActions; |
---|
| 722 | |
---|
| 723 | // Returns an Expectation object that references and co-owns this |
---|
| 724 | // expectation. |
---|
| 725 | virtual Expectation GetHandle() = 0; |
---|
| 726 | |
---|
| 727 | // Asserts that the EXPECT_CALL() statement has the given property. |
---|
| 728 | void AssertSpecProperty(bool property, const string& failure_message) const { |
---|
| 729 | Assert(property, file_, line_, failure_message); |
---|
| 730 | } |
---|
| 731 | |
---|
| 732 | // Expects that the EXPECT_CALL() statement has the given property. |
---|
| 733 | void ExpectSpecProperty(bool property, const string& failure_message) const { |
---|
| 734 | Expect(property, file_, line_, failure_message); |
---|
| 735 | } |
---|
| 736 | |
---|
| 737 | // Explicitly specifies the cardinality of this expectation. Used |
---|
| 738 | // by the subclasses to implement the .Times() clause. |
---|
| 739 | void SpecifyCardinality(const Cardinality& cardinality); |
---|
| 740 | |
---|
| 741 | // Returns true iff the user specified the cardinality explicitly |
---|
| 742 | // using a .Times(). |
---|
| 743 | bool cardinality_specified() const { return cardinality_specified_; } |
---|
| 744 | |
---|
| 745 | // Sets the cardinality of this expectation spec. |
---|
| 746 | void set_cardinality(const Cardinality& a_cardinality) { |
---|
| 747 | cardinality_ = a_cardinality; |
---|
| 748 | } |
---|
| 749 | |
---|
| 750 | // The following group of methods should only be called after the |
---|
| 751 | // EXPECT_CALL() statement, and only when g_gmock_mutex is held by |
---|
| 752 | // the current thread. |
---|
| 753 | |
---|
| 754 | // Retires all pre-requisites of this expectation. |
---|
| 755 | // L >= g_gmock_mutex |
---|
| 756 | void RetireAllPreRequisites(); |
---|
| 757 | |
---|
| 758 | // Returns true iff this expectation is retired. |
---|
| 759 | // L >= g_gmock_mutex |
---|
| 760 | bool is_retired() const { |
---|
| 761 | g_gmock_mutex.AssertHeld(); |
---|
| 762 | return retired_; |
---|
| 763 | } |
---|
| 764 | |
---|
| 765 | // Retires this expectation. |
---|
| 766 | // L >= g_gmock_mutex |
---|
| 767 | void Retire() { |
---|
| 768 | g_gmock_mutex.AssertHeld(); |
---|
| 769 | retired_ = true; |
---|
| 770 | } |
---|
| 771 | |
---|
| 772 | // Returns true iff this expectation is satisfied. |
---|
| 773 | // L >= g_gmock_mutex |
---|
| 774 | bool IsSatisfied() const { |
---|
| 775 | g_gmock_mutex.AssertHeld(); |
---|
| 776 | return cardinality().IsSatisfiedByCallCount(call_count_); |
---|
| 777 | } |
---|
| 778 | |
---|
| 779 | // Returns true iff this expectation is saturated. |
---|
| 780 | // L >= g_gmock_mutex |
---|
| 781 | bool IsSaturated() const { |
---|
| 782 | g_gmock_mutex.AssertHeld(); |
---|
| 783 | return cardinality().IsSaturatedByCallCount(call_count_); |
---|
| 784 | } |
---|
| 785 | |
---|
| 786 | // Returns true iff this expectation is over-saturated. |
---|
| 787 | // L >= g_gmock_mutex |
---|
| 788 | bool IsOverSaturated() const { |
---|
| 789 | g_gmock_mutex.AssertHeld(); |
---|
| 790 | return cardinality().IsOverSaturatedByCallCount(call_count_); |
---|
| 791 | } |
---|
| 792 | |
---|
| 793 | // Returns true iff all pre-requisites of this expectation are satisfied. |
---|
| 794 | // L >= g_gmock_mutex |
---|
| 795 | bool AllPrerequisitesAreSatisfied() const; |
---|
| 796 | |
---|
| 797 | // Adds unsatisfied pre-requisites of this expectation to 'result'. |
---|
| 798 | // L >= g_gmock_mutex |
---|
| 799 | void FindUnsatisfiedPrerequisites(ExpectationSet* result) const; |
---|
| 800 | |
---|
| 801 | // Returns the number this expectation has been invoked. |
---|
| 802 | // L >= g_gmock_mutex |
---|
| 803 | int call_count() const { |
---|
| 804 | g_gmock_mutex.AssertHeld(); |
---|
| 805 | return call_count_; |
---|
| 806 | } |
---|
| 807 | |
---|
| 808 | // Increments the number this expectation has been invoked. |
---|
| 809 | // L >= g_gmock_mutex |
---|
| 810 | void IncrementCallCount() { |
---|
| 811 | g_gmock_mutex.AssertHeld(); |
---|
| 812 | call_count_++; |
---|
| 813 | } |
---|
| 814 | |
---|
| 815 | // Checks the action count (i.e. the number of WillOnce() and |
---|
| 816 | // WillRepeatedly() clauses) against the cardinality if this hasn't |
---|
| 817 | // been done before. Prints a warning if there are too many or too |
---|
| 818 | // few actions. |
---|
| 819 | // L < mutex_ |
---|
| 820 | void CheckActionCountIfNotDone() const; |
---|
| 821 | |
---|
| 822 | friend class ::testing::Sequence; |
---|
| 823 | friend class ::testing::internal::ExpectationTester; |
---|
| 824 | |
---|
| 825 | template <typename Function> |
---|
| 826 | friend class TypedExpectation; |
---|
| 827 | |
---|
| 828 | // Implements the .Times() clause. |
---|
| 829 | void UntypedTimes(const Cardinality& a_cardinality); |
---|
| 830 | |
---|
| 831 | // This group of fields are part of the spec and won't change after |
---|
| 832 | // an EXPECT_CALL() statement finishes. |
---|
| 833 | const char* file_; // The file that contains the expectation. |
---|
| 834 | int line_; // The line number of the expectation. |
---|
| 835 | const string source_text_; // The EXPECT_CALL(...) source text. |
---|
| 836 | // True iff the cardinality is specified explicitly. |
---|
| 837 | bool cardinality_specified_; |
---|
| 838 | Cardinality cardinality_; // The cardinality of the expectation. |
---|
| 839 | // The immediate pre-requisites (i.e. expectations that must be |
---|
| 840 | // satisfied before this expectation can be matched) of this |
---|
| 841 | // expectation. We use linked_ptr in the set because we want an |
---|
| 842 | // Expectation object to be co-owned by its FunctionMocker and its |
---|
| 843 | // successors. This allows multiple mock objects to be deleted at |
---|
| 844 | // different times. |
---|
| 845 | ExpectationSet immediate_prerequisites_; |
---|
| 846 | |
---|
| 847 | // This group of fields are the current state of the expectation, |
---|
| 848 | // and can change as the mock function is called. |
---|
| 849 | int call_count_; // How many times this expectation has been invoked. |
---|
| 850 | bool retired_; // True iff this expectation has retired. |
---|
| 851 | UntypedActions untyped_actions_; |
---|
| 852 | bool extra_matcher_specified_; |
---|
| 853 | bool repeated_action_specified_; // True if a WillRepeatedly() was specified. |
---|
| 854 | bool retires_on_saturation_; |
---|
| 855 | Clause last_clause_; |
---|
| 856 | mutable bool action_count_checked_; // Under mutex_. |
---|
| 857 | mutable Mutex mutex_; // Protects action_count_checked_. |
---|
| 858 | |
---|
| 859 | GTEST_DISALLOW_ASSIGN_(ExpectationBase); |
---|
| 860 | }; // class ExpectationBase |
---|
| 861 | |
---|
| 862 | // Impements an expectation for the given function type. |
---|
| 863 | template <typename F> |
---|
| 864 | class TypedExpectation : public ExpectationBase { |
---|
| 865 | public: |
---|
| 866 | typedef typename Function<F>::ArgumentTuple ArgumentTuple; |
---|
| 867 | typedef typename Function<F>::ArgumentMatcherTuple ArgumentMatcherTuple; |
---|
| 868 | typedef typename Function<F>::Result Result; |
---|
| 869 | |
---|
| 870 | TypedExpectation(FunctionMockerBase<F>* owner, |
---|
| 871 | const char* a_file, int a_line, const string& a_source_text, |
---|
| 872 | const ArgumentMatcherTuple& m) |
---|
| 873 | : ExpectationBase(a_file, a_line, a_source_text), |
---|
| 874 | owner_(owner), |
---|
| 875 | matchers_(m), |
---|
| 876 | // By default, extra_matcher_ should match anything. However, |
---|
| 877 | // we cannot initialize it with _ as that triggers a compiler |
---|
| 878 | // bug in Symbian's C++ compiler (cannot decide between two |
---|
| 879 | // overloaded constructors of Matcher<const ArgumentTuple&>). |
---|
| 880 | extra_matcher_(A<const ArgumentTuple&>()), |
---|
| 881 | repeated_action_(DoDefault()) {} |
---|
| 882 | |
---|
| 883 | virtual ~TypedExpectation() { |
---|
| 884 | // Check the validity of the action count if it hasn't been done |
---|
| 885 | // yet (for example, if the expectation was never used). |
---|
| 886 | CheckActionCountIfNotDone(); |
---|
| 887 | for (UntypedActions::const_iterator it = untyped_actions_.begin(); |
---|
| 888 | it != untyped_actions_.end(); ++it) { |
---|
| 889 | delete static_cast<const Action<F>*>(*it); |
---|
| 890 | } |
---|
| 891 | } |
---|
| 892 | |
---|
| 893 | // Implements the .With() clause. |
---|
| 894 | TypedExpectation& With(const Matcher<const ArgumentTuple&>& m) { |
---|
| 895 | if (last_clause_ == kWith) { |
---|
| 896 | ExpectSpecProperty(false, |
---|
| 897 | ".With() cannot appear " |
---|
| 898 | "more than once in an EXPECT_CALL()."); |
---|
| 899 | } else { |
---|
| 900 | ExpectSpecProperty(last_clause_ < kWith, |
---|
| 901 | ".With() must be the first " |
---|
| 902 | "clause in an EXPECT_CALL()."); |
---|
| 903 | } |
---|
| 904 | last_clause_ = kWith; |
---|
| 905 | |
---|
| 906 | extra_matcher_ = m; |
---|
| 907 | extra_matcher_specified_ = true; |
---|
| 908 | return *this; |
---|
| 909 | } |
---|
| 910 | |
---|
| 911 | // Implements the .Times() clause. |
---|
| 912 | TypedExpectation& Times(const Cardinality& a_cardinality) { |
---|
| 913 | ExpectationBase::UntypedTimes(a_cardinality); |
---|
| 914 | return *this; |
---|
| 915 | } |
---|
| 916 | |
---|
| 917 | // Implements the .Times() clause. |
---|
| 918 | TypedExpectation& Times(int n) { |
---|
| 919 | return Times(Exactly(n)); |
---|
| 920 | } |
---|
| 921 | |
---|
| 922 | // Implements the .InSequence() clause. |
---|
| 923 | TypedExpectation& InSequence(const Sequence& s) { |
---|
| 924 | ExpectSpecProperty(last_clause_ <= kInSequence, |
---|
| 925 | ".InSequence() cannot appear after .After()," |
---|
| 926 | " .WillOnce(), .WillRepeatedly(), or " |
---|
| 927 | ".RetiresOnSaturation()."); |
---|
| 928 | last_clause_ = kInSequence; |
---|
| 929 | |
---|
| 930 | s.AddExpectation(GetHandle()); |
---|
| 931 | return *this; |
---|
| 932 | } |
---|
| 933 | TypedExpectation& InSequence(const Sequence& s1, const Sequence& s2) { |
---|
| 934 | return InSequence(s1).InSequence(s2); |
---|
| 935 | } |
---|
| 936 | TypedExpectation& InSequence(const Sequence& s1, const Sequence& s2, |
---|
| 937 | const Sequence& s3) { |
---|
| 938 | return InSequence(s1, s2).InSequence(s3); |
---|
| 939 | } |
---|
| 940 | TypedExpectation& InSequence(const Sequence& s1, const Sequence& s2, |
---|
| 941 | const Sequence& s3, const Sequence& s4) { |
---|
| 942 | return InSequence(s1, s2, s3).InSequence(s4); |
---|
| 943 | } |
---|
| 944 | TypedExpectation& InSequence(const Sequence& s1, const Sequence& s2, |
---|
| 945 | const Sequence& s3, const Sequence& s4, |
---|
| 946 | const Sequence& s5) { |
---|
| 947 | return InSequence(s1, s2, s3, s4).InSequence(s5); |
---|
| 948 | } |
---|
| 949 | |
---|
| 950 | // Implements that .After() clause. |
---|
| 951 | TypedExpectation& After(const ExpectationSet& s) { |
---|
| 952 | ExpectSpecProperty(last_clause_ <= kAfter, |
---|
| 953 | ".After() cannot appear after .WillOnce()," |
---|
| 954 | " .WillRepeatedly(), or " |
---|
| 955 | ".RetiresOnSaturation()."); |
---|
| 956 | last_clause_ = kAfter; |
---|
| 957 | |
---|
| 958 | for (ExpectationSet::const_iterator it = s.begin(); it != s.end(); ++it) { |
---|
| 959 | immediate_prerequisites_ += *it; |
---|
| 960 | } |
---|
| 961 | return *this; |
---|
| 962 | } |
---|
| 963 | TypedExpectation& After(const ExpectationSet& s1, const ExpectationSet& s2) { |
---|
| 964 | return After(s1).After(s2); |
---|
| 965 | } |
---|
| 966 | TypedExpectation& After(const ExpectationSet& s1, const ExpectationSet& s2, |
---|
| 967 | const ExpectationSet& s3) { |
---|
| 968 | return After(s1, s2).After(s3); |
---|
| 969 | } |
---|
| 970 | TypedExpectation& After(const ExpectationSet& s1, const ExpectationSet& s2, |
---|
| 971 | const ExpectationSet& s3, const ExpectationSet& s4) { |
---|
| 972 | return After(s1, s2, s3).After(s4); |
---|
| 973 | } |
---|
| 974 | TypedExpectation& After(const ExpectationSet& s1, const ExpectationSet& s2, |
---|
| 975 | const ExpectationSet& s3, const ExpectationSet& s4, |
---|
| 976 | const ExpectationSet& s5) { |
---|
| 977 | return After(s1, s2, s3, s4).After(s5); |
---|
| 978 | } |
---|
| 979 | |
---|
| 980 | // Implements the .WillOnce() clause. |
---|
| 981 | TypedExpectation& WillOnce(const Action<F>& action) { |
---|
| 982 | ExpectSpecProperty(last_clause_ <= kWillOnce, |
---|
| 983 | ".WillOnce() cannot appear after " |
---|
| 984 | ".WillRepeatedly() or .RetiresOnSaturation()."); |
---|
| 985 | last_clause_ = kWillOnce; |
---|
| 986 | |
---|
| 987 | untyped_actions_.push_back(new Action<F>(action)); |
---|
| 988 | if (!cardinality_specified()) { |
---|
| 989 | set_cardinality(Exactly(static_cast<int>(untyped_actions_.size()))); |
---|
| 990 | } |
---|
| 991 | return *this; |
---|
| 992 | } |
---|
| 993 | |
---|
| 994 | // Implements the .WillRepeatedly() clause. |
---|
| 995 | TypedExpectation& WillRepeatedly(const Action<F>& action) { |
---|
| 996 | if (last_clause_ == kWillRepeatedly) { |
---|
| 997 | ExpectSpecProperty(false, |
---|
| 998 | ".WillRepeatedly() cannot appear " |
---|
| 999 | "more than once in an EXPECT_CALL()."); |
---|
| 1000 | } else { |
---|
| 1001 | ExpectSpecProperty(last_clause_ < kWillRepeatedly, |
---|
| 1002 | ".WillRepeatedly() cannot appear " |
---|
| 1003 | "after .RetiresOnSaturation()."); |
---|
| 1004 | } |
---|
| 1005 | last_clause_ = kWillRepeatedly; |
---|
| 1006 | repeated_action_specified_ = true; |
---|
| 1007 | |
---|
| 1008 | repeated_action_ = action; |
---|
| 1009 | if (!cardinality_specified()) { |
---|
| 1010 | set_cardinality(AtLeast(static_cast<int>(untyped_actions_.size()))); |
---|
| 1011 | } |
---|
| 1012 | |
---|
| 1013 | // Now that no more action clauses can be specified, we check |
---|
| 1014 | // whether their count makes sense. |
---|
| 1015 | CheckActionCountIfNotDone(); |
---|
| 1016 | return *this; |
---|
| 1017 | } |
---|
| 1018 | |
---|
| 1019 | // Implements the .RetiresOnSaturation() clause. |
---|
| 1020 | TypedExpectation& RetiresOnSaturation() { |
---|
| 1021 | ExpectSpecProperty(last_clause_ < kRetiresOnSaturation, |
---|
| 1022 | ".RetiresOnSaturation() cannot appear " |
---|
| 1023 | "more than once."); |
---|
| 1024 | last_clause_ = kRetiresOnSaturation; |
---|
| 1025 | retires_on_saturation_ = true; |
---|
| 1026 | |
---|
| 1027 | // Now that no more action clauses can be specified, we check |
---|
| 1028 | // whether their count makes sense. |
---|
| 1029 | CheckActionCountIfNotDone(); |
---|
| 1030 | return *this; |
---|
| 1031 | } |
---|
| 1032 | |
---|
| 1033 | // Returns the matchers for the arguments as specified inside the |
---|
| 1034 | // EXPECT_CALL() macro. |
---|
| 1035 | const ArgumentMatcherTuple& matchers() const { |
---|
| 1036 | return matchers_; |
---|
| 1037 | } |
---|
| 1038 | |
---|
| 1039 | // Returns the matcher specified by the .With() clause. |
---|
| 1040 | const Matcher<const ArgumentTuple&>& extra_matcher() const { |
---|
| 1041 | return extra_matcher_; |
---|
| 1042 | } |
---|
| 1043 | |
---|
| 1044 | // Returns the action specified by the .WillRepeatedly() clause. |
---|
| 1045 | const Action<F>& repeated_action() const { return repeated_action_; } |
---|
| 1046 | |
---|
| 1047 | // If this mock method has an extra matcher (i.e. .With(matcher)), |
---|
| 1048 | // describes it to the ostream. |
---|
| 1049 | virtual void MaybeDescribeExtraMatcherTo(::std::ostream* os) { |
---|
| 1050 | if (extra_matcher_specified_) { |
---|
| 1051 | *os << " Expected args: "; |
---|
| 1052 | extra_matcher_.DescribeTo(os); |
---|
| 1053 | *os << "\n"; |
---|
| 1054 | } |
---|
| 1055 | } |
---|
| 1056 | |
---|
| 1057 | private: |
---|
| 1058 | template <typename Function> |
---|
| 1059 | friend class FunctionMockerBase; |
---|
| 1060 | |
---|
| 1061 | // Returns an Expectation object that references and co-owns this |
---|
| 1062 | // expectation. |
---|
| 1063 | virtual Expectation GetHandle() { |
---|
| 1064 | return owner_->GetHandleOf(this); |
---|
| 1065 | } |
---|
| 1066 | |
---|
| 1067 | // The following methods will be called only after the EXPECT_CALL() |
---|
| 1068 | // statement finishes and when the current thread holds |
---|
| 1069 | // g_gmock_mutex. |
---|
| 1070 | |
---|
| 1071 | // Returns true iff this expectation matches the given arguments. |
---|
| 1072 | // L >= g_gmock_mutex |
---|
| 1073 | bool Matches(const ArgumentTuple& args) const { |
---|
| 1074 | g_gmock_mutex.AssertHeld(); |
---|
| 1075 | return TupleMatches(matchers_, args) && extra_matcher_.Matches(args); |
---|
| 1076 | } |
---|
| 1077 | |
---|
| 1078 | // Returns true iff this expectation should handle the given arguments. |
---|
| 1079 | // L >= g_gmock_mutex |
---|
| 1080 | bool ShouldHandleArguments(const ArgumentTuple& args) const { |
---|
| 1081 | g_gmock_mutex.AssertHeld(); |
---|
| 1082 | |
---|
| 1083 | // In case the action count wasn't checked when the expectation |
---|
| 1084 | // was defined (e.g. if this expectation has no WillRepeatedly() |
---|
| 1085 | // or RetiresOnSaturation() clause), we check it when the |
---|
| 1086 | // expectation is used for the first time. |
---|
| 1087 | CheckActionCountIfNotDone(); |
---|
| 1088 | return !is_retired() && AllPrerequisitesAreSatisfied() && Matches(args); |
---|
| 1089 | } |
---|
| 1090 | |
---|
| 1091 | // Describes the result of matching the arguments against this |
---|
| 1092 | // expectation to the given ostream. |
---|
| 1093 | // L >= g_gmock_mutex |
---|
| 1094 | void ExplainMatchResultTo(const ArgumentTuple& args, |
---|
| 1095 | ::std::ostream* os) const { |
---|
| 1096 | g_gmock_mutex.AssertHeld(); |
---|
| 1097 | |
---|
| 1098 | if (is_retired()) { |
---|
| 1099 | *os << " Expected: the expectation is active\n" |
---|
| 1100 | << " Actual: it is retired\n"; |
---|
| 1101 | } else if (!Matches(args)) { |
---|
| 1102 | if (!TupleMatches(matchers_, args)) { |
---|
| 1103 | ExplainMatchFailureTupleTo(matchers_, args, os); |
---|
| 1104 | } |
---|
| 1105 | StringMatchResultListener listener; |
---|
| 1106 | if (!extra_matcher_.MatchAndExplain(args, &listener)) { |
---|
| 1107 | *os << " Expected args: "; |
---|
| 1108 | extra_matcher_.DescribeTo(os); |
---|
| 1109 | *os << "\n Actual: don't match"; |
---|
| 1110 | |
---|
| 1111 | internal::PrintIfNotEmpty(listener.str(), os); |
---|
| 1112 | *os << "\n"; |
---|
| 1113 | } |
---|
| 1114 | } else if (!AllPrerequisitesAreSatisfied()) { |
---|
| 1115 | *os << " Expected: all pre-requisites are satisfied\n" |
---|
| 1116 | << " Actual: the following immediate pre-requisites " |
---|
| 1117 | << "are not satisfied:\n"; |
---|
| 1118 | ExpectationSet unsatisfied_prereqs; |
---|
| 1119 | FindUnsatisfiedPrerequisites(&unsatisfied_prereqs); |
---|
| 1120 | int i = 0; |
---|
| 1121 | for (ExpectationSet::const_iterator it = unsatisfied_prereqs.begin(); |
---|
| 1122 | it != unsatisfied_prereqs.end(); ++it) { |
---|
| 1123 | it->expectation_base()->DescribeLocationTo(os); |
---|
| 1124 | *os << "pre-requisite #" << i++ << "\n"; |
---|
| 1125 | } |
---|
| 1126 | *os << " (end of pre-requisites)\n"; |
---|
| 1127 | } else { |
---|
| 1128 | // This line is here just for completeness' sake. It will never |
---|
| 1129 | // be executed as currently the ExplainMatchResultTo() function |
---|
| 1130 | // is called only when the mock function call does NOT match the |
---|
| 1131 | // expectation. |
---|
| 1132 | *os << "The call matches the expectation.\n"; |
---|
| 1133 | } |
---|
| 1134 | } |
---|
| 1135 | |
---|
| 1136 | // Returns the action that should be taken for the current invocation. |
---|
| 1137 | // L >= g_gmock_mutex |
---|
| 1138 | const Action<F>& GetCurrentAction(const FunctionMockerBase<F>* mocker, |
---|
| 1139 | const ArgumentTuple& args) const { |
---|
| 1140 | g_gmock_mutex.AssertHeld(); |
---|
| 1141 | const int count = call_count(); |
---|
| 1142 | Assert(count >= 1, __FILE__, __LINE__, |
---|
| 1143 | "call_count() is <= 0 when GetCurrentAction() is " |
---|
| 1144 | "called - this should never happen."); |
---|
| 1145 | |
---|
| 1146 | const int action_count = static_cast<int>(untyped_actions_.size()); |
---|
| 1147 | if (action_count > 0 && !repeated_action_specified_ && |
---|
| 1148 | count > action_count) { |
---|
| 1149 | // If there is at least one WillOnce() and no WillRepeatedly(), |
---|
| 1150 | // we warn the user when the WillOnce() clauses ran out. |
---|
| 1151 | ::std::stringstream ss; |
---|
| 1152 | DescribeLocationTo(&ss); |
---|
| 1153 | ss << "Actions ran out in " << source_text() << "...\n" |
---|
| 1154 | << "Called " << count << " times, but only " |
---|
| 1155 | << action_count << " WillOnce()" |
---|
| 1156 | << (action_count == 1 ? " is" : "s are") << " specified - "; |
---|
| 1157 | mocker->DescribeDefaultActionTo(args, &ss); |
---|
| 1158 | Log(WARNING, ss.str(), 1); |
---|
| 1159 | } |
---|
| 1160 | |
---|
| 1161 | return count <= action_count ? |
---|
| 1162 | *static_cast<const Action<F>*>(untyped_actions_[count - 1]) : |
---|
| 1163 | repeated_action(); |
---|
| 1164 | } |
---|
| 1165 | |
---|
| 1166 | // Given the arguments of a mock function call, if the call will |
---|
| 1167 | // over-saturate this expectation, returns the default action; |
---|
| 1168 | // otherwise, returns the next action in this expectation. Also |
---|
| 1169 | // describes *what* happened to 'what', and explains *why* Google |
---|
| 1170 | // Mock does it to 'why'. This method is not const as it calls |
---|
| 1171 | // IncrementCallCount(). A return value of NULL means the default |
---|
| 1172 | // action. |
---|
| 1173 | // L >= g_gmock_mutex |
---|
| 1174 | const Action<F>* GetActionForArguments(const FunctionMockerBase<F>* mocker, |
---|
| 1175 | const ArgumentTuple& args, |
---|
| 1176 | ::std::ostream* what, |
---|
| 1177 | ::std::ostream* why) { |
---|
| 1178 | g_gmock_mutex.AssertHeld(); |
---|
| 1179 | if (IsSaturated()) { |
---|
| 1180 | // We have an excessive call. |
---|
| 1181 | IncrementCallCount(); |
---|
| 1182 | *what << "Mock function called more times than expected - "; |
---|
| 1183 | mocker->DescribeDefaultActionTo(args, what); |
---|
| 1184 | DescribeCallCountTo(why); |
---|
| 1185 | |
---|
| 1186 | // TODO(wan@google.com): allow the user to control whether |
---|
| 1187 | // unexpected calls should fail immediately or continue using a |
---|
| 1188 | // flag --gmock_unexpected_calls_are_fatal. |
---|
| 1189 | return NULL; |
---|
| 1190 | } |
---|
| 1191 | |
---|
| 1192 | IncrementCallCount(); |
---|
| 1193 | RetireAllPreRequisites(); |
---|
| 1194 | |
---|
| 1195 | if (retires_on_saturation_ && IsSaturated()) { |
---|
| 1196 | Retire(); |
---|
| 1197 | } |
---|
| 1198 | |
---|
| 1199 | // Must be done after IncrementCount()! |
---|
| 1200 | *what << "Mock function call matches " << source_text() <<"...\n"; |
---|
| 1201 | return &(GetCurrentAction(mocker, args)); |
---|
| 1202 | } |
---|
| 1203 | |
---|
| 1204 | // All the fields below won't change once the EXPECT_CALL() |
---|
| 1205 | // statement finishes. |
---|
| 1206 | FunctionMockerBase<F>* const owner_; |
---|
| 1207 | ArgumentMatcherTuple matchers_; |
---|
| 1208 | Matcher<const ArgumentTuple&> extra_matcher_; |
---|
| 1209 | Action<F> repeated_action_; |
---|
| 1210 | |
---|
| 1211 | GTEST_DISALLOW_COPY_AND_ASSIGN_(TypedExpectation); |
---|
| 1212 | }; // class TypedExpectation |
---|
| 1213 | |
---|
| 1214 | // A MockSpec object is used by ON_CALL() or EXPECT_CALL() for |
---|
| 1215 | // specifying the default behavior of, or expectation on, a mock |
---|
| 1216 | // function. |
---|
| 1217 | |
---|
| 1218 | // Note: class MockSpec really belongs to the ::testing namespace. |
---|
| 1219 | // However if we define it in ::testing, MSVC will complain when |
---|
| 1220 | // classes in ::testing::internal declare it as a friend class |
---|
| 1221 | // template. To workaround this compiler bug, we define MockSpec in |
---|
| 1222 | // ::testing::internal and import it into ::testing. |
---|
| 1223 | |
---|
| 1224 | // Logs a message including file and line number information. |
---|
| 1225 | void LogWithLocation(testing::internal::LogSeverity severity, |
---|
| 1226 | const char* file, int line, |
---|
| 1227 | const string& message); |
---|
| 1228 | |
---|
| 1229 | template <typename F> |
---|
| 1230 | class MockSpec { |
---|
| 1231 | public: |
---|
| 1232 | typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple; |
---|
| 1233 | typedef typename internal::Function<F>::ArgumentMatcherTuple |
---|
| 1234 | ArgumentMatcherTuple; |
---|
| 1235 | |
---|
| 1236 | // Constructs a MockSpec object, given the function mocker object |
---|
| 1237 | // that the spec is associated with. |
---|
| 1238 | explicit MockSpec(internal::FunctionMockerBase<F>* function_mocker) |
---|
| 1239 | : function_mocker_(function_mocker) {} |
---|
| 1240 | |
---|
| 1241 | // Adds a new default action spec to the function mocker and returns |
---|
| 1242 | // the newly created spec. |
---|
| 1243 | internal::OnCallSpec<F>& InternalDefaultActionSetAt( |
---|
| 1244 | const char* file, int line, const char* obj, const char* call) { |
---|
| 1245 | LogWithLocation(internal::INFO, file, line, |
---|
| 1246 | string("ON_CALL(") + obj + ", " + call + ") invoked"); |
---|
| 1247 | return function_mocker_->AddNewOnCallSpec(file, line, matchers_); |
---|
| 1248 | } |
---|
| 1249 | |
---|
| 1250 | // Adds a new expectation spec to the function mocker and returns |
---|
| 1251 | // the newly created spec. |
---|
| 1252 | internal::TypedExpectation<F>& InternalExpectedAt( |
---|
| 1253 | const char* file, int line, const char* obj, const char* call) { |
---|
| 1254 | const string source_text(string("EXPECT_CALL(") + obj + ", " + call + ")"); |
---|
| 1255 | LogWithLocation(internal::INFO, file, line, source_text + " invoked"); |
---|
| 1256 | return function_mocker_->AddNewExpectation( |
---|
| 1257 | file, line, source_text, matchers_); |
---|
| 1258 | } |
---|
| 1259 | |
---|
| 1260 | private: |
---|
| 1261 | template <typename Function> |
---|
| 1262 | friend class internal::FunctionMocker; |
---|
| 1263 | |
---|
| 1264 | void SetMatchers(const ArgumentMatcherTuple& matchers) { |
---|
| 1265 | matchers_ = matchers; |
---|
| 1266 | } |
---|
| 1267 | |
---|
| 1268 | // The function mocker that owns this spec. |
---|
| 1269 | internal::FunctionMockerBase<F>* const function_mocker_; |
---|
| 1270 | // The argument matchers specified in the spec. |
---|
| 1271 | ArgumentMatcherTuple matchers_; |
---|
| 1272 | |
---|
| 1273 | GTEST_DISALLOW_ASSIGN_(MockSpec); |
---|
| 1274 | }; // class MockSpec |
---|
| 1275 | |
---|
| 1276 | // MSVC warns about using 'this' in base member initializer list, so |
---|
| 1277 | // we need to temporarily disable the warning. We have to do it for |
---|
| 1278 | // the entire class to suppress the warning, even though it's about |
---|
| 1279 | // the constructor only. |
---|
| 1280 | |
---|
| 1281 | #ifdef _MSC_VER |
---|
| 1282 | # pragma warning(push) // Saves the current warning state. |
---|
| 1283 | # pragma warning(disable:4355) // Temporarily disables warning 4355. |
---|
| 1284 | #endif // _MSV_VER |
---|
| 1285 | |
---|
| 1286 | // C++ treats the void type specially. For example, you cannot define |
---|
| 1287 | // a void-typed variable or pass a void value to a function. |
---|
| 1288 | // ActionResultHolder<T> holds a value of type T, where T must be a |
---|
| 1289 | // copyable type or void (T doesn't need to be default-constructable). |
---|
| 1290 | // It hides the syntactic difference between void and other types, and |
---|
| 1291 | // is used to unify the code for invoking both void-returning and |
---|
| 1292 | // non-void-returning mock functions. |
---|
| 1293 | |
---|
| 1294 | // Untyped base class for ActionResultHolder<T>. |
---|
| 1295 | class UntypedActionResultHolderBase { |
---|
| 1296 | public: |
---|
| 1297 | virtual ~UntypedActionResultHolderBase() {} |
---|
| 1298 | |
---|
| 1299 | // Prints the held value as an action's result to os. |
---|
| 1300 | virtual void PrintAsActionResult(::std::ostream* os) const = 0; |
---|
| 1301 | }; |
---|
| 1302 | |
---|
| 1303 | // This generic definition is used when T is not void. |
---|
| 1304 | template <typename T> |
---|
| 1305 | class ActionResultHolder : public UntypedActionResultHolderBase { |
---|
| 1306 | public: |
---|
| 1307 | explicit ActionResultHolder(T a_value) : value_(a_value) {} |
---|
| 1308 | |
---|
| 1309 | // The compiler-generated copy constructor and assignment operator |
---|
| 1310 | // are exactly what we need, so we don't need to define them. |
---|
| 1311 | |
---|
| 1312 | // Returns the held value and deletes this object. |
---|
| 1313 | T GetValueAndDelete() const { |
---|
| 1314 | T retval(value_); |
---|
| 1315 | delete this; |
---|
| 1316 | return retval; |
---|
| 1317 | } |
---|
| 1318 | |
---|
| 1319 | // Prints the held value as an action's result to os. |
---|
| 1320 | virtual void PrintAsActionResult(::std::ostream* os) const { |
---|
| 1321 | *os << "\n Returns: "; |
---|
| 1322 | // T may be a reference type, so we don't use UniversalPrint(). |
---|
| 1323 | UniversalPrinter<T>::Print(value_, os); |
---|
| 1324 | } |
---|
| 1325 | |
---|
| 1326 | // Performs the given mock function's default action and returns the |
---|
| 1327 | // result in a new-ed ActionResultHolder. |
---|
| 1328 | template <typename F> |
---|
| 1329 | static ActionResultHolder* PerformDefaultAction( |
---|
| 1330 | const FunctionMockerBase<F>* func_mocker, |
---|
| 1331 | const typename Function<F>::ArgumentTuple& args, |
---|
| 1332 | const string& call_description) { |
---|
| 1333 | return new ActionResultHolder( |
---|
| 1334 | func_mocker->PerformDefaultAction(args, call_description)); |
---|
| 1335 | } |
---|
| 1336 | |
---|
| 1337 | // Performs the given action and returns the result in a new-ed |
---|
| 1338 | // ActionResultHolder. |
---|
| 1339 | template <typename F> |
---|
| 1340 | static ActionResultHolder* |
---|
| 1341 | PerformAction(const Action<F>& action, |
---|
| 1342 | const typename Function<F>::ArgumentTuple& args) { |
---|
| 1343 | return new ActionResultHolder(action.Perform(args)); |
---|
| 1344 | } |
---|
| 1345 | |
---|
| 1346 | private: |
---|
| 1347 | T value_; |
---|
| 1348 | |
---|
| 1349 | // T could be a reference type, so = isn't supported. |
---|
| 1350 | GTEST_DISALLOW_ASSIGN_(ActionResultHolder); |
---|
| 1351 | }; |
---|
| 1352 | |
---|
| 1353 | // Specialization for T = void. |
---|
| 1354 | template <> |
---|
| 1355 | class ActionResultHolder<void> : public UntypedActionResultHolderBase { |
---|
| 1356 | public: |
---|
| 1357 | void GetValueAndDelete() const { delete this; } |
---|
| 1358 | |
---|
| 1359 | virtual void PrintAsActionResult(::std::ostream* /* os */) const {} |
---|
| 1360 | |
---|
| 1361 | // Performs the given mock function's default action and returns NULL; |
---|
| 1362 | template <typename F> |
---|
| 1363 | static ActionResultHolder* PerformDefaultAction( |
---|
| 1364 | const FunctionMockerBase<F>* func_mocker, |
---|
| 1365 | const typename Function<F>::ArgumentTuple& args, |
---|
| 1366 | const string& call_description) { |
---|
| 1367 | func_mocker->PerformDefaultAction(args, call_description); |
---|
| 1368 | return NULL; |
---|
| 1369 | } |
---|
| 1370 | |
---|
| 1371 | // Performs the given action and returns NULL. |
---|
| 1372 | template <typename F> |
---|
| 1373 | static ActionResultHolder* PerformAction( |
---|
| 1374 | const Action<F>& action, |
---|
| 1375 | const typename Function<F>::ArgumentTuple& args) { |
---|
| 1376 | action.Perform(args); |
---|
| 1377 | return NULL; |
---|
| 1378 | } |
---|
| 1379 | }; |
---|
| 1380 | |
---|
| 1381 | // The base of the function mocker class for the given function type. |
---|
| 1382 | // We put the methods in this class instead of its child to avoid code |
---|
| 1383 | // bloat. |
---|
| 1384 | template <typename F> |
---|
| 1385 | class FunctionMockerBase : public UntypedFunctionMockerBase { |
---|
| 1386 | public: |
---|
| 1387 | typedef typename Function<F>::Result Result; |
---|
| 1388 | typedef typename Function<F>::ArgumentTuple ArgumentTuple; |
---|
| 1389 | typedef typename Function<F>::ArgumentMatcherTuple ArgumentMatcherTuple; |
---|
| 1390 | |
---|
| 1391 | FunctionMockerBase() : current_spec_(this) {} |
---|
| 1392 | |
---|
| 1393 | // The destructor verifies that all expectations on this mock |
---|
| 1394 | // function have been satisfied. If not, it will report Google Test |
---|
| 1395 | // non-fatal failures for the violations. |
---|
| 1396 | // L < g_gmock_mutex |
---|
| 1397 | virtual ~FunctionMockerBase() { |
---|
| 1398 | MutexLock l(&g_gmock_mutex); |
---|
| 1399 | VerifyAndClearExpectationsLocked(); |
---|
| 1400 | Mock::UnregisterLocked(this); |
---|
| 1401 | ClearDefaultActionsLocked(); |
---|
| 1402 | } |
---|
| 1403 | |
---|
| 1404 | // Returns the ON_CALL spec that matches this mock function with the |
---|
| 1405 | // given arguments; returns NULL if no matching ON_CALL is found. |
---|
| 1406 | // L = * |
---|
| 1407 | const OnCallSpec<F>* FindOnCallSpec( |
---|
| 1408 | const ArgumentTuple& args) const { |
---|
| 1409 | for (UntypedOnCallSpecs::const_reverse_iterator it |
---|
| 1410 | = untyped_on_call_specs_.rbegin(); |
---|
| 1411 | it != untyped_on_call_specs_.rend(); ++it) { |
---|
| 1412 | const OnCallSpec<F>* spec = static_cast<const OnCallSpec<F>*>(*it); |
---|
| 1413 | if (spec->Matches(args)) |
---|
| 1414 | return spec; |
---|
| 1415 | } |
---|
| 1416 | |
---|
| 1417 | return NULL; |
---|
| 1418 | } |
---|
| 1419 | |
---|
| 1420 | // Performs the default action of this mock function on the given arguments |
---|
| 1421 | // and returns the result. Asserts with a helpful call descrption if there is |
---|
| 1422 | // no valid return value. This method doesn't depend on the mutable state of |
---|
| 1423 | // this object, and thus can be called concurrently without locking. |
---|
| 1424 | // L = * |
---|
| 1425 | Result PerformDefaultAction(const ArgumentTuple& args, |
---|
| 1426 | const string& call_description) const { |
---|
| 1427 | const OnCallSpec<F>* const spec = |
---|
| 1428 | this->FindOnCallSpec(args); |
---|
| 1429 | if (spec != NULL) { |
---|
| 1430 | return spec->GetAction().Perform(args); |
---|
| 1431 | } |
---|
| 1432 | Assert(DefaultValue<Result>::Exists(), "", -1, |
---|
| 1433 | call_description + "\n The mock function has no default action " |
---|
| 1434 | "set, and its return type has no default value set."); |
---|
| 1435 | return DefaultValue<Result>::Get(); |
---|
| 1436 | } |
---|
| 1437 | |
---|
| 1438 | // Performs the default action with the given arguments and returns |
---|
| 1439 | // the action's result. The call description string will be used in |
---|
| 1440 | // the error message to describe the call in the case the default |
---|
| 1441 | // action fails. The caller is responsible for deleting the result. |
---|
| 1442 | // L = * |
---|
| 1443 | virtual UntypedActionResultHolderBase* UntypedPerformDefaultAction( |
---|
| 1444 | const void* untyped_args, // must point to an ArgumentTuple |
---|
| 1445 | const string& call_description) const { |
---|
| 1446 | const ArgumentTuple& args = |
---|
| 1447 | *static_cast<const ArgumentTuple*>(untyped_args); |
---|
| 1448 | return ResultHolder::PerformDefaultAction(this, args, call_description); |
---|
| 1449 | } |
---|
| 1450 | |
---|
| 1451 | // Performs the given action with the given arguments and returns |
---|
| 1452 | // the action's result. The caller is responsible for deleting the |
---|
| 1453 | // result. |
---|
| 1454 | // L = * |
---|
| 1455 | virtual UntypedActionResultHolderBase* UntypedPerformAction( |
---|
| 1456 | const void* untyped_action, const void* untyped_args) const { |
---|
| 1457 | // Make a copy of the action before performing it, in case the |
---|
| 1458 | // action deletes the mock object (and thus deletes itself). |
---|
| 1459 | const Action<F> action = *static_cast<const Action<F>*>(untyped_action); |
---|
| 1460 | const ArgumentTuple& args = |
---|
| 1461 | *static_cast<const ArgumentTuple*>(untyped_args); |
---|
| 1462 | return ResultHolder::PerformAction(action, args); |
---|
| 1463 | } |
---|
| 1464 | |
---|
| 1465 | // Implements UntypedFunctionMockerBase::ClearDefaultActionsLocked(): |
---|
| 1466 | // clears the ON_CALL()s set on this mock function. |
---|
| 1467 | // L >= g_gmock_mutex |
---|
| 1468 | virtual void ClearDefaultActionsLocked() { |
---|
| 1469 | g_gmock_mutex.AssertHeld(); |
---|
| 1470 | for (UntypedOnCallSpecs::const_iterator it = |
---|
| 1471 | untyped_on_call_specs_.begin(); |
---|
| 1472 | it != untyped_on_call_specs_.end(); ++it) { |
---|
| 1473 | delete static_cast<const OnCallSpec<F>*>(*it); |
---|
| 1474 | } |
---|
| 1475 | untyped_on_call_specs_.clear(); |
---|
| 1476 | } |
---|
| 1477 | |
---|
| 1478 | protected: |
---|
| 1479 | template <typename Function> |
---|
| 1480 | friend class MockSpec; |
---|
| 1481 | |
---|
| 1482 | typedef ActionResultHolder<Result> ResultHolder; |
---|
| 1483 | |
---|
| 1484 | // Returns the result of invoking this mock function with the given |
---|
| 1485 | // arguments. This function can be safely called from multiple |
---|
| 1486 | // threads concurrently. |
---|
| 1487 | // L < g_gmock_mutex |
---|
| 1488 | Result InvokeWith(const ArgumentTuple& args) { |
---|
| 1489 | return static_cast<const ResultHolder*>( |
---|
| 1490 | this->UntypedInvokeWith(&args))->GetValueAndDelete(); |
---|
| 1491 | } |
---|
| 1492 | |
---|
| 1493 | // Adds and returns a default action spec for this mock function. |
---|
| 1494 | // L < g_gmock_mutex |
---|
| 1495 | OnCallSpec<F>& AddNewOnCallSpec( |
---|
| 1496 | const char* file, int line, |
---|
| 1497 | const ArgumentMatcherTuple& m) { |
---|
| 1498 | Mock::RegisterUseByOnCallOrExpectCall(MockObject(), file, line); |
---|
| 1499 | OnCallSpec<F>* const on_call_spec = new OnCallSpec<F>(file, line, m); |
---|
| 1500 | untyped_on_call_specs_.push_back(on_call_spec); |
---|
| 1501 | return *on_call_spec; |
---|
| 1502 | } |
---|
| 1503 | |
---|
| 1504 | // Adds and returns an expectation spec for this mock function. |
---|
| 1505 | // L < g_gmock_mutex |
---|
| 1506 | TypedExpectation<F>& AddNewExpectation( |
---|
| 1507 | const char* file, |
---|
| 1508 | int line, |
---|
| 1509 | const string& source_text, |
---|
| 1510 | const ArgumentMatcherTuple& m) { |
---|
| 1511 | Mock::RegisterUseByOnCallOrExpectCall(MockObject(), file, line); |
---|
| 1512 | TypedExpectation<F>* const expectation = |
---|
| 1513 | new TypedExpectation<F>(this, file, line, source_text, m); |
---|
| 1514 | const linked_ptr<ExpectationBase> untyped_expectation(expectation); |
---|
| 1515 | untyped_expectations_.push_back(untyped_expectation); |
---|
| 1516 | |
---|
| 1517 | // Adds this expectation into the implicit sequence if there is one. |
---|
| 1518 | Sequence* const implicit_sequence = g_gmock_implicit_sequence.get(); |
---|
| 1519 | if (implicit_sequence != NULL) { |
---|
| 1520 | implicit_sequence->AddExpectation(Expectation(untyped_expectation)); |
---|
| 1521 | } |
---|
| 1522 | |
---|
| 1523 | return *expectation; |
---|
| 1524 | } |
---|
| 1525 | |
---|
| 1526 | // The current spec (either default action spec or expectation spec) |
---|
| 1527 | // being described on this function mocker. |
---|
| 1528 | MockSpec<F>& current_spec() { return current_spec_; } |
---|
| 1529 | |
---|
| 1530 | private: |
---|
| 1531 | template <typename Func> friend class TypedExpectation; |
---|
| 1532 | |
---|
| 1533 | // Some utilities needed for implementing UntypedInvokeWith(). |
---|
| 1534 | |
---|
| 1535 | // Describes what default action will be performed for the given |
---|
| 1536 | // arguments. |
---|
| 1537 | // L = * |
---|
| 1538 | void DescribeDefaultActionTo(const ArgumentTuple& args, |
---|
| 1539 | ::std::ostream* os) const { |
---|
| 1540 | const OnCallSpec<F>* const spec = FindOnCallSpec(args); |
---|
| 1541 | |
---|
| 1542 | if (spec == NULL) { |
---|
| 1543 | *os << (internal::type_equals<Result, void>::value ? |
---|
| 1544 | "returning directly.\n" : |
---|
| 1545 | "returning default value.\n"); |
---|
| 1546 | } else { |
---|
| 1547 | *os << "taking default action specified at:\n" |
---|
| 1548 | << FormatFileLocation(spec->file(), spec->line()) << "\n"; |
---|
| 1549 | } |
---|
| 1550 | } |
---|
| 1551 | |
---|
| 1552 | // Writes a message that the call is uninteresting (i.e. neither |
---|
| 1553 | // explicitly expected nor explicitly unexpected) to the given |
---|
| 1554 | // ostream. |
---|
| 1555 | // L < g_gmock_mutex |
---|
| 1556 | virtual void UntypedDescribeUninterestingCall(const void* untyped_args, |
---|
| 1557 | ::std::ostream* os) const { |
---|
| 1558 | const ArgumentTuple& args = |
---|
| 1559 | *static_cast<const ArgumentTuple*>(untyped_args); |
---|
| 1560 | *os << "Uninteresting mock function call - "; |
---|
| 1561 | DescribeDefaultActionTo(args, os); |
---|
| 1562 | *os << " Function call: " << Name(); |
---|
| 1563 | UniversalPrint(args, os); |
---|
| 1564 | } |
---|
| 1565 | |
---|
| 1566 | // Returns the expectation that matches the given function arguments |
---|
| 1567 | // (or NULL is there's no match); when a match is found, |
---|
| 1568 | // untyped_action is set to point to the action that should be |
---|
| 1569 | // performed (or NULL if the action is "do default"), and |
---|
| 1570 | // is_excessive is modified to indicate whether the call exceeds the |
---|
| 1571 | // expected number. |
---|
| 1572 | // |
---|
| 1573 | // Critical section: We must find the matching expectation and the |
---|
| 1574 | // corresponding action that needs to be taken in an ATOMIC |
---|
| 1575 | // transaction. Otherwise another thread may call this mock |
---|
| 1576 | // method in the middle and mess up the state. |
---|
| 1577 | // |
---|
| 1578 | // However, performing the action has to be left out of the critical |
---|
| 1579 | // section. The reason is that we have no control on what the |
---|
| 1580 | // action does (it can invoke an arbitrary user function or even a |
---|
| 1581 | // mock function) and excessive locking could cause a dead lock. |
---|
| 1582 | // L < g_gmock_mutex |
---|
| 1583 | virtual const ExpectationBase* UntypedFindMatchingExpectation( |
---|
| 1584 | const void* untyped_args, |
---|
| 1585 | const void** untyped_action, bool* is_excessive, |
---|
| 1586 | ::std::ostream* what, ::std::ostream* why) { |
---|
| 1587 | const ArgumentTuple& args = |
---|
| 1588 | *static_cast<const ArgumentTuple*>(untyped_args); |
---|
| 1589 | MutexLock l(&g_gmock_mutex); |
---|
| 1590 | TypedExpectation<F>* exp = this->FindMatchingExpectationLocked(args); |
---|
| 1591 | if (exp == NULL) { // A match wasn't found. |
---|
| 1592 | this->FormatUnexpectedCallMessageLocked(args, what, why); |
---|
| 1593 | return NULL; |
---|
| 1594 | } |
---|
| 1595 | |
---|
| 1596 | // This line must be done before calling GetActionForArguments(), |
---|
| 1597 | // which will increment the call count for *exp and thus affect |
---|
| 1598 | // its saturation status. |
---|
| 1599 | *is_excessive = exp->IsSaturated(); |
---|
| 1600 | const Action<F>* action = exp->GetActionForArguments(this, args, what, why); |
---|
| 1601 | if (action != NULL && action->IsDoDefault()) |
---|
| 1602 | action = NULL; // Normalize "do default" to NULL. |
---|
| 1603 | *untyped_action = action; |
---|
| 1604 | return exp; |
---|
| 1605 | } |
---|
| 1606 | |
---|
| 1607 | // Prints the given function arguments to the ostream. |
---|
| 1608 | virtual void UntypedPrintArgs(const void* untyped_args, |
---|
| 1609 | ::std::ostream* os) const { |
---|
| 1610 | const ArgumentTuple& args = |
---|
| 1611 | *static_cast<const ArgumentTuple*>(untyped_args); |
---|
| 1612 | UniversalPrint(args, os); |
---|
| 1613 | } |
---|
| 1614 | |
---|
| 1615 | // Returns the expectation that matches the arguments, or NULL if no |
---|
| 1616 | // expectation matches them. |
---|
| 1617 | // L >= g_gmock_mutex |
---|
| 1618 | TypedExpectation<F>* FindMatchingExpectationLocked( |
---|
| 1619 | const ArgumentTuple& args) const { |
---|
| 1620 | g_gmock_mutex.AssertHeld(); |
---|
| 1621 | for (typename UntypedExpectations::const_reverse_iterator it = |
---|
| 1622 | untyped_expectations_.rbegin(); |
---|
| 1623 | it != untyped_expectations_.rend(); ++it) { |
---|
| 1624 | TypedExpectation<F>* const exp = |
---|
| 1625 | static_cast<TypedExpectation<F>*>(it->get()); |
---|
| 1626 | if (exp->ShouldHandleArguments(args)) { |
---|
| 1627 | return exp; |
---|
| 1628 | } |
---|
| 1629 | } |
---|
| 1630 | return NULL; |
---|
| 1631 | } |
---|
| 1632 | |
---|
| 1633 | // Returns a message that the arguments don't match any expectation. |
---|
| 1634 | // L >= g_gmock_mutex |
---|
| 1635 | void FormatUnexpectedCallMessageLocked(const ArgumentTuple& args, |
---|
| 1636 | ::std::ostream* os, |
---|
| 1637 | ::std::ostream* why) const { |
---|
| 1638 | g_gmock_mutex.AssertHeld(); |
---|
| 1639 | *os << "\nUnexpected mock function call - "; |
---|
| 1640 | DescribeDefaultActionTo(args, os); |
---|
| 1641 | PrintTriedExpectationsLocked(args, why); |
---|
| 1642 | } |
---|
| 1643 | |
---|
| 1644 | // Prints a list of expectations that have been tried against the |
---|
| 1645 | // current mock function call. |
---|
| 1646 | // L >= g_gmock_mutex |
---|
| 1647 | void PrintTriedExpectationsLocked(const ArgumentTuple& args, |
---|
| 1648 | ::std::ostream* why) const { |
---|
| 1649 | g_gmock_mutex.AssertHeld(); |
---|
| 1650 | const int count = static_cast<int>(untyped_expectations_.size()); |
---|
| 1651 | *why << "Google Mock tried the following " << count << " " |
---|
| 1652 | << (count == 1 ? "expectation, but it didn't match" : |
---|
| 1653 | "expectations, but none matched") |
---|
| 1654 | << ":\n"; |
---|
| 1655 | for (int i = 0; i < count; i++) { |
---|
| 1656 | TypedExpectation<F>* const expectation = |
---|
| 1657 | static_cast<TypedExpectation<F>*>(untyped_expectations_[i].get()); |
---|
| 1658 | *why << "\n"; |
---|
| 1659 | expectation->DescribeLocationTo(why); |
---|
| 1660 | if (count > 1) { |
---|
| 1661 | *why << "tried expectation #" << i << ": "; |
---|
| 1662 | } |
---|
| 1663 | *why << expectation->source_text() << "...\n"; |
---|
| 1664 | expectation->ExplainMatchResultTo(args, why); |
---|
| 1665 | expectation->DescribeCallCountTo(why); |
---|
| 1666 | } |
---|
| 1667 | } |
---|
| 1668 | |
---|
| 1669 | // The current spec (either default action spec or expectation spec) |
---|
| 1670 | // being described on this function mocker. |
---|
| 1671 | MockSpec<F> current_spec_; |
---|
| 1672 | |
---|
| 1673 | // There is no generally useful and implementable semantics of |
---|
| 1674 | // copying a mock object, so copying a mock is usually a user error. |
---|
| 1675 | // Thus we disallow copying function mockers. If the user really |
---|
| 1676 | // wants to copy a mock object, he should implement his own copy |
---|
| 1677 | // operation, for example: |
---|
| 1678 | // |
---|
| 1679 | // class MockFoo : public Foo { |
---|
| 1680 | // public: |
---|
| 1681 | // // Defines a copy constructor explicitly. |
---|
| 1682 | // MockFoo(const MockFoo& src) {} |
---|
| 1683 | // ... |
---|
| 1684 | // }; |
---|
| 1685 | GTEST_DISALLOW_COPY_AND_ASSIGN_(FunctionMockerBase); |
---|
| 1686 | }; // class FunctionMockerBase |
---|
| 1687 | |
---|
| 1688 | #ifdef _MSC_VER |
---|
| 1689 | # pragma warning(pop) // Restores the warning state. |
---|
| 1690 | #endif // _MSV_VER |
---|
| 1691 | |
---|
| 1692 | // Implements methods of FunctionMockerBase. |
---|
| 1693 | |
---|
| 1694 | // Verifies that all expectations on this mock function have been |
---|
| 1695 | // satisfied. Reports one or more Google Test non-fatal failures and |
---|
| 1696 | // returns false if not. |
---|
| 1697 | // L >= g_gmock_mutex |
---|
| 1698 | |
---|
| 1699 | // Reports an uninteresting call (whose description is in msg) in the |
---|
| 1700 | // manner specified by 'reaction'. |
---|
| 1701 | void ReportUninterestingCall(CallReaction reaction, const string& msg); |
---|
| 1702 | |
---|
| 1703 | } // namespace internal |
---|
| 1704 | |
---|
| 1705 | // The style guide prohibits "using" statements in a namespace scope |
---|
| 1706 | // inside a header file. However, the MockSpec class template is |
---|
| 1707 | // meant to be defined in the ::testing namespace. The following line |
---|
| 1708 | // is just a trick for working around a bug in MSVC 8.0, which cannot |
---|
| 1709 | // handle it if we define MockSpec in ::testing. |
---|
| 1710 | using internal::MockSpec; |
---|
| 1711 | |
---|
| 1712 | // Const(x) is a convenient function for obtaining a const reference |
---|
| 1713 | // to x. This is useful for setting expectations on an overloaded |
---|
| 1714 | // const mock method, e.g. |
---|
| 1715 | // |
---|
| 1716 | // class MockFoo : public FooInterface { |
---|
| 1717 | // public: |
---|
| 1718 | // MOCK_METHOD0(Bar, int()); |
---|
| 1719 | // MOCK_CONST_METHOD0(Bar, int&()); |
---|
| 1720 | // }; |
---|
| 1721 | // |
---|
| 1722 | // MockFoo foo; |
---|
| 1723 | // // Expects a call to non-const MockFoo::Bar(). |
---|
| 1724 | // EXPECT_CALL(foo, Bar()); |
---|
| 1725 | // // Expects a call to const MockFoo::Bar(). |
---|
| 1726 | // EXPECT_CALL(Const(foo), Bar()); |
---|
| 1727 | template <typename T> |
---|
| 1728 | inline const T& Const(const T& x) { return x; } |
---|
| 1729 | |
---|
| 1730 | // Constructs an Expectation object that references and co-owns exp. |
---|
| 1731 | inline Expectation::Expectation(internal::ExpectationBase& exp) // NOLINT |
---|
| 1732 | : expectation_base_(exp.GetHandle().expectation_base()) {} |
---|
| 1733 | |
---|
| 1734 | } // namespace testing |
---|
| 1735 | |
---|
| 1736 | // A separate macro is required to avoid compile errors when the name |
---|
| 1737 | // of the method used in call is a result of macro expansion. |
---|
| 1738 | // See CompilesWithMethodNameExpandedFromMacro tests in |
---|
| 1739 | // internal/gmock-spec-builders_test.cc for more details. |
---|
| 1740 | #define GMOCK_ON_CALL_IMPL_(obj, call) \ |
---|
| 1741 | ((obj).gmock_##call).InternalDefaultActionSetAt(__FILE__, __LINE__, \ |
---|
| 1742 | #obj, #call) |
---|
| 1743 | #define ON_CALL(obj, call) GMOCK_ON_CALL_IMPL_(obj, call) |
---|
| 1744 | |
---|
| 1745 | #define GMOCK_EXPECT_CALL_IMPL_(obj, call) \ |
---|
| 1746 | ((obj).gmock_##call).InternalExpectedAt(__FILE__, __LINE__, #obj, #call) |
---|
| 1747 | #define EXPECT_CALL(obj, call) GMOCK_EXPECT_CALL_IMPL_(obj, call) |
---|
| 1748 | |
---|
| 1749 | #endif // GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_ |
---|