1 | '\" |
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2 | '\" Copyright (c) 1990-1994 The Regents of the University of California |
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3 | '\" Copyright (c) 1994-1997 Sun Microsystems, Inc. |
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4 | '\" Copyright (c) 1998-1999 Scriptics Corporation |
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5 | '\" Copyright (c) 2000 Ajuba Solutions |
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6 | '\" Contributions from Don Porter, NIST, 2002. (not subject to US copyright) |
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7 | '\" |
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8 | '\" See the file "license.terms" for information on usage and redistribution |
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9 | '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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10 | '\" |
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11 | '\" RCS: @(#) $Id: tcltest.n,v 1.55 2007/12/13 15:22:33 dgp Exp $ |
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12 | '\" |
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13 | .so man.macros |
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14 | .TH "tcltest" n 2.3 tcltest "Tcl Bundled Packages" |
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15 | .BS |
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16 | '\" Note: do not modify the .SH NAME line immediately below! |
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17 | .SH NAME |
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18 | tcltest \- Test harness support code and utilities |
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19 | .SH SYNOPSIS |
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20 | .nf |
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21 | \fBpackage require tcltest ?2.3?\fR |
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22 | .sp |
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23 | \fBtcltest::test \fIname description ?option value ...?\fR |
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24 | \fBtcltest::test \fIname description ?constraints? body result\fR |
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25 | .sp |
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26 | \fBtcltest::loadTestedCommands\fR |
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27 | \fBtcltest::makeDirectory \fIname ?directory?\fR |
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28 | \fBtcltest::removeDirectory \fIname ?directory?\fR |
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29 | \fBtcltest::makeFile \fIcontents name ?directory?\fR |
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30 | \fBtcltest::removeFile \fIname ?directory?\fR |
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31 | \fBtcltest::viewFile \fIname ?directory?\fR |
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32 | \fBtcltest::cleanupTests \fI?runningMultipleTests?\fR |
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33 | \fBtcltest::runAllTests\fR |
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34 | .sp |
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35 | \fBtcltest::configure\fR |
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36 | \fBtcltest::configure \fIoption\fR |
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37 | \fBtcltest::configure \fIoption value ?option value ...?\fR |
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38 | \fBtcltest::customMatch \fImode command\fR |
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39 | \fBtcltest::testConstraint \fIconstraint ?value?\fR |
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40 | \fBtcltest::outputChannel \fI?channelID?\fR |
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41 | \fBtcltest::errorChannel \fI?channelID?\fR |
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42 | \fBtcltest::interpreter \fI?interp?\fR |
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43 | .sp |
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44 | \fBtcltest::debug \fI?level?\fR |
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45 | \fBtcltest::errorFile \fI?filename?\fR |
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46 | \fBtcltest::limitConstraints \fI?boolean?\fR |
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47 | \fBtcltest::loadFile \fI?filename?\fR |
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48 | \fBtcltest::loadScript \fI?script?\fR |
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49 | \fBtcltest::match \fI?patternList?\fR |
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50 | \fBtcltest::matchDirectories \fI?patternList?\fR |
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51 | \fBtcltest::matchFiles \fI?patternList?\fR |
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52 | \fBtcltest::outputFile \fI?filename?\fR |
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53 | \fBtcltest::preserveCore \fI?level?\fR |
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54 | \fBtcltest::singleProcess \fI?boolean?\fR |
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55 | \fBtcltest::skip \fI?patternList?\fR |
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56 | \fBtcltest::skipDirectories \fI?patternList?\fR |
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57 | \fBtcltest::skipFiles \fI?patternList?\fR |
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58 | \fBtcltest::temporaryDirectory \fI?directory?\fR |
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59 | \fBtcltest::testsDirectory \fI?directory?\fR |
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60 | \fBtcltest::verbose \fI?level?\fR |
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61 | .sp |
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62 | \fBtcltest::test \fIname description optionList\fR |
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63 | \fBtcltest::bytestring \fIstring\fR |
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64 | \fBtcltest::normalizeMsg \fImsg\fR |
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65 | \fBtcltest::normalizePath \fIpathVar\fR |
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66 | \fBtcltest::workingDirectory \fI?dir?\fR |
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67 | .fi |
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68 | .BE |
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69 | .SH DESCRIPTION |
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70 | .PP |
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71 | The \fBtcltest\fR package provides several utility commands useful |
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72 | in the construction of test suites for code instrumented to be |
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73 | run by evaluation of Tcl commands. Notably the built-in commands |
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74 | of the Tcl library itself are tested by a test suite using the |
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75 | tcltest package. |
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76 | .PP |
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77 | All the commands provided by the \fBtcltest\fR package are defined |
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78 | in and exported from the \fB::tcltest\fR namespace, as indicated in |
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79 | the \fBSYNOPSIS\fR above. In the following sections, all commands |
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80 | will be described by their simple names, in the interest of brevity. |
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81 | .PP |
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82 | The central command of \fBtcltest\fR is \fBtest\fR that defines |
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83 | and runs a test. Testing with \fBtest\fR involves evaluation |
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84 | of a Tcl script and comparing the result to an expected result, as |
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85 | configured and controlled by a number of options. Several other |
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86 | commands provided by \fBtcltest\fR govern the configuration of |
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87 | \fBtest\fR and the collection of many \fBtest\fR commands into |
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88 | test suites. |
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89 | .PP |
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90 | See \fBCREATING TEST SUITES WITH TCLTEST\fR below for an extended example |
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91 | of how to use the commands of \fBtcltest\fR to produce test suites |
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92 | for your Tcl-enabled code. |
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93 | .SH COMMANDS |
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94 | .TP |
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95 | \fBtest\fR \fIname description ?option value ...?\fR |
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96 | Defines and possibly runs a test with the name \fIname\fR and |
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97 | description \fIdescription\fR. The name and description of a test |
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98 | are used in messages reported by \fBtest\fR during the |
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99 | test, as configured by the options of \fBtcltest\fR. The |
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100 | remaining \fIoption value\fR arguments to \fBtest\fR |
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101 | define the test, including the scripts to run, the conditions |
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102 | under which to run them, the expected result, and the means |
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103 | by which the expected and actual results should be compared. |
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104 | See \fBTESTS\fR below for a complete description of the valid |
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105 | options and how they define a test. The \fBtest\fR command |
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106 | returns an empty string. |
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107 | .TP |
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108 | \fBtest\fR \fIname description ?constraints? body result\fR |
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109 | This form of \fBtest\fR is provided to support test suites written |
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110 | for version 1 of the \fBtcltest\fR package, and also a simpler |
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111 | interface for a common usage. It is the same as |
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112 | .QW "\fBtest\fR \fIname description\fB \-constraints \fIconstraints\fB \-body \fIbody\fB \-result \fIresult\fR" . |
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113 | All other options to \fBtest\fR |
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114 | take their default values. When \fIconstraints\fR is omitted, this |
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115 | form of \fBtest\fR can be distinguished from the first because |
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116 | all \fIoption\fRs begin with |
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117 | .QW \- . |
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118 | .TP |
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119 | \fBloadTestedCommands\fR |
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120 | Evaluates in the caller's context the script specified by |
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121 | \fBconfigure \-load\fR or \fBconfigure \-loadfile\fR. |
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122 | Returns the result of that script evaluation, including any error |
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123 | raised by the script. Use this command and the related |
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124 | configuration options to provide the commands to be tested to |
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125 | the interpreter running the test suite. |
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126 | .TP |
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127 | \fBmakeFile\fR \fIcontents name ?directory?\fR |
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128 | Creates a file named \fIname\fR relative to |
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129 | directory \fIdirectory\fR and write \fIcontents\fR |
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130 | to that file using the encoding \fBencoding system\fR. |
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131 | If \fIcontents\fR does not end with a newline, a newline |
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132 | will be appended so that the file named \fIname\fR |
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133 | does end with a newline. Because the system encoding is used, |
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134 | this command is only suitable for making text files. |
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135 | The file will be removed by the next evaluation |
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136 | of \fBcleanupTests\fR, unless it is removed by |
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137 | \fBremoveFile\fR first. The default value of |
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138 | \fIdirectory\fR is the directory \fBconfigure \-tmpdir\fR. |
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139 | Returns the full path of the file created. Use this command |
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140 | to create any text file required by a test with contents as needed. |
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141 | .TP |
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142 | \fBremoveFile\fR \fIname ?directory?\fR |
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143 | Forces the file referenced by \fIname\fR to be removed. This file name |
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144 | should be relative to \fIdirectory\fR. The default value of |
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145 | \fIdirectory\fR is the directory \fBconfigure \-tmpdir\fR. |
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146 | Returns an empty string. Use this command to delete files |
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147 | created by \fBmakeFile\fR. |
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148 | .TP |
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149 | \fBmakeDirectory\fR \fIname ?directory?\fR |
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150 | Creates a directory named \fIname\fR relative to directory \fIdirectory\fR. |
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151 | The directory will be removed by the next evaluation of \fBcleanupTests\fR, |
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152 | unless it is removed by \fBremoveDirectory\fR first. |
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153 | The default value of \fIdirectory\fR is the directory |
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154 | \fBconfigure \-tmpdir\fR. |
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155 | Returns the full path of the directory created. Use this command |
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156 | to create any directories that are required to exist by a test. |
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157 | .TP |
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158 | \fBremoveDirectory\fR \fIname ?directory?\fR |
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159 | Forces the directory referenced by \fIname\fR to be removed. This |
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160 | directory should be relative to \fIdirectory\fR. |
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161 | The default value of \fIdirectory\fR is the directory |
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162 | \fBconfigure \-tmpdir\fR. |
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163 | Returns an empty string. Use this command to delete any directories |
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164 | created by \fBmakeDirectory\fR. |
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165 | .TP |
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166 | \fBviewFile\fR \fIfile ?directory?\fR |
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167 | Returns the contents of \fIfile\fR, except for any |
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168 | final newline, just as \fBread \-nonewline\fR would return. |
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169 | This file name should be relative to \fIdirectory\fR. |
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170 | The default value of \fIdirectory\fR is the directory |
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171 | \fBconfigure \-tmpdir\fR. Use this command |
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172 | as a convenient way to turn the contents of a file generated |
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173 | by a test into the result of that test for matching against |
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174 | an expected result. The contents of the file are read using |
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175 | the system encoding, so its usefulness is limited to text |
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176 | files. |
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177 | .TP |
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178 | \fBcleanupTests\fR |
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179 | Intended to clean up and summarize after several tests have been |
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180 | run. Typically called once per test file, at the end of the file |
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181 | after all tests have been completed. For best effectiveness, be |
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182 | sure that the \fBcleanupTests\fR is evaluated even if an error |
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183 | occurs earlier in the test file evaluation. |
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184 | .RS |
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185 | .PP |
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186 | Prints statistics about the tests run and removes files that were |
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187 | created by \fBmakeDirectory\fR and \fBmakeFile\fR since the |
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188 | last \fBcleanupTests\fR. Names of files and directories |
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189 | in the directory \fBconfigure \-tmpdir\fR created since |
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190 | the last \fBcleanupTests\fR, but not created by |
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191 | \fBmakeFile\fR or \fBmakeDirectory\fR are printed |
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192 | to \fBoutputChannel\fR. This command also restores the original |
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193 | shell environment, as described by the \fB::env\fR |
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194 | array. Returns an empty string. |
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195 | .RE |
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196 | .TP |
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197 | \fBrunAllTests\fR |
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198 | This is a master command meant to run an entire suite of tests, |
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199 | spanning multiple files and/or directories, as governed by |
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200 | the configurable options of \fBtcltest\fR. See \fBRUNNING ALL TESTS\fR |
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201 | below for a complete description of the many variations possible |
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202 | with \fBrunAllTests\fR. |
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203 | .SH "CONFIGURATION COMMANDS" |
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204 | .TP |
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205 | \fBconfigure\fR |
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206 | Returns the list of configurable options supported by \fBtcltest\fR. |
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207 | See \fBCONFIGURABLE OPTIONS\fR below for the full list of options, |
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208 | their valid values, and their effect on \fBtcltest\fR operations. |
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209 | .TP |
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210 | \fBconfigure \fIoption\fR |
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211 | Returns the current value of the supported configurable option \fIoption\fR. |
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212 | Raises an error if \fIoption\fR is not a supported configurable option. |
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213 | .TP |
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214 | \fBconfigure \fIoption value ?option value ...?\fR |
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215 | Sets the value of each configurable option \fIoption\fR to the |
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216 | corresponding value \fIvalue\fR, in order. Raises an error if |
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217 | an \fIoption\fR is not a supported configurable option, or if |
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218 | \fIvalue\fR is not a valid value for the corresponding \fIoption\fR, |
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219 | or if a \fIvalue\fR is not provided. When an error is raised, the |
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220 | operation of \fBconfigure\fR is halted, and subsequent \fIoption value\fR |
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221 | arguments are not processed. |
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222 | .RS |
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223 | .PP |
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224 | If the environment variable \fB::env(TCLTEST_OPTIONS)\fR exists when |
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225 | the \fBtcltest\fR package is loaded (by \fBpackage require tcltest\fR) |
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226 | then its value is taken as a list of arguments to pass to \fBconfigure\fR. |
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227 | This allows the default values of the configuration options to be |
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228 | set by the environment. |
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229 | .RE |
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230 | .TP |
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231 | \fBcustomMatch \fImode script\fR |
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232 | Registers \fImode\fR as a new legal value of the \fB\-match\fR option |
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233 | to \fBtest\fR. When the \fB\-match \fImode\fR option is |
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234 | passed to \fBtest\fR, the script \fIscript\fR will be evaluated |
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235 | to compare the actual result of evaluating the body of the test |
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236 | to the expected result. |
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237 | To perform the match, the \fIscript\fR is completed with two additional |
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238 | words, the expected result, and the actual result, and the completed script |
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239 | is evaluated in the global namespace. |
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240 | The completed script is expected to return a boolean value indicating |
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241 | whether or not the results match. The built-in matching modes of |
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242 | \fBtest\fR are \fBexact\fR, \fBglob\fR, and \fBregexp\fR. |
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243 | .TP |
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244 | \fBtestConstraint \fIconstraint ?boolean?\fR |
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245 | Sets or returns the boolean value associated with the named \fIconstraint\fR. |
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246 | See \fBTEST CONSTRAINTS\fR below for more information. |
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247 | .TP |
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248 | \fBinterpreter\fR \fI?executableName?\fR |
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249 | Sets or returns the name of the executable to be \fBexec\fRed by |
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250 | \fBrunAllTests\fR to run each test file when |
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251 | \fBconfigure \-singleproc\fR is false. |
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252 | The default value for \fBinterpreter\fR is the name of the |
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253 | currently running program as returned by \fBinfo nameofexecutable\fR. |
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254 | .TP |
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255 | \fBoutputChannel\fR \fI?channelID?\fR |
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256 | Sets or returns the output channel ID. This defaults to stdout. |
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257 | Any test that prints test related output should send |
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258 | that output to \fBoutputChannel\fR rather than letting |
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259 | that output default to stdout. |
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260 | .TP |
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261 | \fBerrorChannel\fR \fI?channelID?\fR |
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262 | Sets or returns the error channel ID. This defaults to stderr. |
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263 | Any test that prints error messages should send |
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264 | that output to \fBerrorChannel\fR rather than printing |
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265 | directly to stderr. |
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266 | .SH "SHORTCUT COMMANDS" |
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267 | .TP |
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268 | \fBdebug \fI?level?\fR |
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269 | Same as \fBconfigure \-debug \fI?level?\fR. |
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270 | .TP |
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271 | \fBerrorFile \fI?filename?\fR |
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272 | Same as \fBconfigure \-errfile \fI?filename?\fR. |
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273 | .TP |
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274 | \fBlimitConstraints \fI?boolean?\fR |
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275 | Same as \fBconfigure \-limitconstraints \fI?boolean?\fR. |
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276 | .TP |
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277 | \fBloadFile \fI?filename?\fR |
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278 | Same as \fBconfigure \-loadfile \fI?filename?\fR. |
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279 | .TP |
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280 | \fBloadScript \fI?script?\fR |
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281 | Same as \fBconfigure \-load \fI?script?\fR. |
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282 | .TP |
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283 | \fBmatch \fI?patternList?\fR |
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284 | Same as \fBconfigure \-match \fI?patternList?\fR. |
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285 | .TP |
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286 | \fBmatchDirectories \fI?patternList?\fR |
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287 | Same as \fBconfigure \-relateddir \fI?patternList?\fR. |
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288 | .TP |
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289 | \fBmatchFiles \fI?patternList?\fR |
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290 | Same as \fBconfigure \-file \fI?patternList?\fR. |
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291 | .TP |
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292 | \fBoutputFile \fI?filename?\fR |
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293 | Same as \fBconfigure \-outfile \fI?filename?\fR. |
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294 | .TP |
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295 | \fBpreserveCore \fI?level?\fR |
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296 | Same as \fBconfigure \-preservecore \fI?level?\fR. |
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297 | .TP |
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298 | \fBsingleProcess \fI?boolean?\fR |
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299 | Same as \fBconfigure \-singleproc \fI?boolean?\fR. |
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300 | .TP |
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301 | \fBskip \fI?patternList?\fR |
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302 | Same as \fBconfigure \-skip \fI?patternList?\fR. |
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303 | .TP |
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304 | \fBskipDirectories \fI?patternList?\fR |
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305 | Same as \fBconfigure \-asidefromdir \fI?patternList?\fR. |
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306 | .TP |
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307 | \fBskipFiles \fI?patternList?\fR |
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308 | Same as \fBconfigure \-notfile \fI?patternList?\fR. |
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309 | .TP |
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310 | \fBtemporaryDirectory \fI?directory?\fR |
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311 | Same as \fBconfigure \-tmpdir \fI?directory?\fR. |
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312 | .TP |
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313 | \fBtestsDirectory \fI?directory?\fR |
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314 | Same as \fBconfigure \-testdir \fI?directory?\fR. |
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315 | .TP |
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316 | \fBverbose \fI?level?\fR |
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317 | Same as \fBconfigure \-verbose \fI?level?\fR. |
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318 | .SH "OTHER COMMANDS" |
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319 | .PP |
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320 | The remaining commands provided by \fBtcltest\fR have better |
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321 | alternatives provided by \fBtcltest\fR or \fBTcl\fR itself. They |
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322 | are retained to support existing test suites, but should be avoided |
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323 | in new code. |
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324 | .TP |
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325 | \fBtest\fR \fIname description optionList\fR |
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326 | This form of \fBtest\fR was provided to enable passing many |
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327 | options spanning several lines to \fBtest\fR as a single |
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328 | argument quoted by braces, rather than needing to backslash quote |
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329 | the newlines between arguments to \fBtest\fR. The \fIoptionList\fR |
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330 | argument is expected to be a list with an even number of elements |
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331 | representing \fIoption\fR and \fIvalue\fR arguments to pass |
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332 | to \fBtest\fR. However, these values are not passed directly, as |
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333 | in the alternate forms of \fBswitch\fR. Instead, this form makes |
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334 | an unfortunate attempt to overthrow Tcl's substitution rules by |
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335 | performing substitutions on some of the list elements as an attempt to |
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336 | implement a |
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337 | .QW "do what I mean" |
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338 | interpretation of a brace-enclosed |
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339 | .QW block . |
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340 | The result is nearly impossible to document clearly, and |
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341 | for that reason this form is not recommended. See the examples in |
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342 | \fBCREATING TEST SUITES WITH TCLTEST\fR below to see that this |
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343 | form is really not necessary to avoid backslash-quoted newlines. |
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344 | If you insist on using this form, examine |
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345 | the source code of \fBtcltest\fR if you want to know the substitution |
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346 | details, or just enclose the third through last argument |
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347 | to \fBtest\fR in braces and hope for the best. |
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348 | .TP |
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349 | \fBworkingDirectory\fR \fI?directoryName?\fR |
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350 | Sets or returns the current working directory when the test suite is |
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351 | running. The default value for workingDirectory is the directory in |
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352 | which the test suite was launched. The Tcl commands \fBcd\fR and |
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353 | \fBpwd\fR are sufficient replacements. |
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354 | .TP |
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355 | \fBnormalizeMsg\fR \fImsg\fR |
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356 | Returns the result of removing the |
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357 | .QW extra |
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358 | newlines from \fImsg\fR, where |
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359 | .QW extra |
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360 | is rather imprecise. Tcl offers plenty of string |
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361 | processing commands to modify strings as you wish, and |
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362 | \fBcustomMatch\fR allows flexible matching of actual and expected |
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363 | results. |
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364 | .TP |
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365 | \fBnormalizePath\fR \fIpathVar\fR |
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366 | Resolves symlinks in a path, thus creating a path without internal |
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367 | redirection. It is assumed that \fIpathVar\fR is absolute. |
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368 | \fIpathVar\fR is modified in place. The Tcl command \fBfile normalize\fR |
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369 | is a sufficient replacement. |
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370 | .TP |
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371 | \fBbytestring\fR \fIstring\fR |
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372 | Construct a string that consists of the requested sequence of bytes, |
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373 | as opposed to a string of properly formed UTF-8 characters using the |
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374 | value supplied in \fIstring\fR. This allows the tester to create |
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375 | denormalized or improperly formed strings to pass to C procedures that |
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376 | are supposed to accept strings with embedded NULL types and confirm |
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377 | that a string result has a certain pattern of bytes. This is |
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378 | exactly equivalent to the Tcl command \fBencoding convertfrom identity\fR. |
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379 | .SH TESTS |
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380 | .PP |
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381 | The \fBtest\fR command is the heart of the \fBtcltest\fR package. |
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382 | Its essential function is to evaluate a Tcl script and compare |
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383 | the result with an expected result. The options of \fBtest\fR |
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384 | define the test script, the environment in which to evaluate it, |
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385 | the expected result, and how the compare the actual result to |
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386 | the expected result. Some configuration options of \fBtcltest\fR |
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387 | also influence how \fBtest\fR operates. |
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388 | .PP |
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389 | The valid options for \fBtest\fR are summarized: |
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390 | .PP |
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391 | .CS |
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392 | \fBtest\fR \fIname\fR \fIdescription\fR |
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393 | ?-constraints \fIkeywordList|expression\fR? |
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394 | ?-setup \fIsetupScript\fR? |
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395 | ?-body \fItestScript\fR? |
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396 | ?-cleanup \fIcleanupScript\fR? |
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397 | ?-result \fIexpectedAnswer\fR? |
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398 | ?-output \fIexpectedOutput\fR? |
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399 | ?-errorOutput \fIexpectedError\fR? |
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400 | ?-returnCodes \fIcodeList\fR? |
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401 | ?-match \fImode\fR? |
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402 | .CE |
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403 | .PP |
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404 | The \fIname\fR may be any string. It is conventional to choose |
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405 | a \fIname\fR according to the pattern: |
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406 | .PP |
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407 | .CS |
---|
408 | \fItarget\fR-\fImajorNum\fR.\fIminorNum\fR |
---|
409 | .CE |
---|
410 | .PP |
---|
411 | For white-box (regression) tests, the target should be the name of the |
---|
412 | C function or Tcl procedure being tested. For black-box tests, the |
---|
413 | target should be the name of the feature being tested. Some conventions |
---|
414 | call for the names of black-box tests to have the suffix \fB_bb\fR. |
---|
415 | Related tests should share a major number. As a test suite evolves, |
---|
416 | it is best to have the same test name continue to correspond to the |
---|
417 | same test, so that it remains meaningful to say things like |
---|
418 | .QW "Test foo-1.3 passed in all releases up to 3.4, but began failing in release 3.5." |
---|
419 | .PP |
---|
420 | During evaluation of \fBtest\fR, the \fIname\fR will be compared |
---|
421 | to the lists of string matching patterns returned by |
---|
422 | \fBconfigure \-match\fR, and \fBconfigure \-skip\fR. The test |
---|
423 | will be run only if \fIname\fR matches any of the patterns from |
---|
424 | \fBconfigure \-match\fR and matches none of the patterns |
---|
425 | from \fBconfigure \-skip\fR. |
---|
426 | .PP |
---|
427 | The \fIdescription\fR should be a short textual description of the |
---|
428 | test. The \fIdescription\fR is included in output produced by the |
---|
429 | test, typically test failure messages. Good \fIdescription\fR values |
---|
430 | should briefly explain the purpose of the test to users of a test suite. |
---|
431 | The name of a Tcl or C function being tested should be included in the |
---|
432 | description for regression tests. If the test case exists to reproduce |
---|
433 | a bug, include the bug ID in the description. |
---|
434 | .PP |
---|
435 | Valid attributes and associated values are: |
---|
436 | .TP |
---|
437 | \fB\-constraints \fIkeywordList|expression\fR |
---|
438 | The optional \fB\-constraints\fR attribute can be list of one or more |
---|
439 | keywords or an expression. If the \fB\-constraints\fR value is a list of |
---|
440 | keywords, each of these keywords should be the name of a constraint |
---|
441 | defined by a call to \fBtestConstraint\fR. If any of the listed |
---|
442 | constraints is false or does not exist, the test is skipped. If the |
---|
443 | \fB\-constraints\fR value is an expression, that expression |
---|
444 | is evaluated. If the expression evaluates to true, then the test is run. |
---|
445 | Note that the expression form of \fB\-constraints\fR may interfere with the |
---|
446 | operation of \fBconfigure \-constraints\fR and |
---|
447 | \fBconfigure \-limitconstraints\fR, and is not recommended. |
---|
448 | Appropriate constraints should be added to any tests that should |
---|
449 | not always be run. That is, conditional evaluation of a test |
---|
450 | should be accomplished by the \fB\-constraints\fR option, not by |
---|
451 | conditional evaluation of \fBtest\fR. In that way, the same |
---|
452 | number of tests are always reported by the test suite, though |
---|
453 | the number skipped may change based on the testing environment. |
---|
454 | The default value is an empty list. |
---|
455 | See \fBTEST CONSTRAINTS\fR below for a list of built-in constraints |
---|
456 | and information on how to add your own constraints. |
---|
457 | .TP |
---|
458 | \fB\-setup \fIscript\fR |
---|
459 | The optional \fB\-setup\fR attribute indicates a \fIscript\fR that will be run |
---|
460 | before the script indicated by the \fB\-body\fR attribute. If evaluation |
---|
461 | of \fIscript\fR raises an error, the test will fail. The default value |
---|
462 | is an empty script. |
---|
463 | .TP |
---|
464 | \fB\-body \fIscript\fR |
---|
465 | The \fB\-body\fR attribute indicates the \fIscript\fR to run to carry out the |
---|
466 | test. It must return a result that can be checked for correctness. |
---|
467 | If evaluation of \fIscript\fR raises an error, the test will fail. |
---|
468 | The default value is an empty script. |
---|
469 | .TP |
---|
470 | \fB\-cleanup \fIscript\fR |
---|
471 | The optional \fB\-cleanup\fR attribute indicates a \fIscript\fR that will be |
---|
472 | run after the script indicated by the \fB\-body\fR attribute. |
---|
473 | If evaluation of \fIscript\fR raises an error, the test will fail. |
---|
474 | The default value is an empty script. |
---|
475 | .TP |
---|
476 | \fB\-match \fImode\fR |
---|
477 | The \fB\-match\fR attribute determines how expected answers supplied by |
---|
478 | \fB\-result\fR, \fB\-output\fR, and \fB\-errorOutput\fR are compared. Valid |
---|
479 | values for \fImode\fR are \fBregexp\fR, \fBglob\fR, \fBexact\fR, and |
---|
480 | any value registered by a prior call to \fBcustomMatch\fR. The default |
---|
481 | value is \fBexact\fR. |
---|
482 | .TP |
---|
483 | \fB\-result \fIexpectedValue\fR |
---|
484 | The \fB\-result\fR attribute supplies the \fIexpectedValue\fR against which |
---|
485 | the return value from script will be compared. The default value is |
---|
486 | an empty string. |
---|
487 | .TP |
---|
488 | \fB\-output \fIexpectedValue\fR |
---|
489 | The \fB\-output\fR attribute supplies the \fIexpectedValue\fR against which |
---|
490 | any output sent to \fBstdout\fR or \fBoutputChannel\fR during evaluation |
---|
491 | of the script(s) will be compared. Note that only output printed using |
---|
492 | \fB::puts\fR is used for comparison. If \fB\-output\fR is not specified, |
---|
493 | output sent to \fBstdout\fR and \fBoutputChannel\fR is not processed for |
---|
494 | comparison. |
---|
495 | .TP |
---|
496 | \fB\-errorOutput \fIexpectedValue\fR |
---|
497 | The \fB\-errorOutput\fR attribute supplies the \fIexpectedValue\fR against |
---|
498 | which any output sent to \fBstderr\fR or \fBerrorChannel\fR during |
---|
499 | evaluation of the script(s) will be compared. Note that only output |
---|
500 | printed using \fB::puts\fR is used for comparison. If \fB\-errorOutput\fR |
---|
501 | is not specified, output sent to \fBstderr\fR and \fBerrorChannel\fR is |
---|
502 | not processed for comparison. |
---|
503 | .TP |
---|
504 | \fB\-returnCodes \fIexpectedCodeList\fR |
---|
505 | The optional \fB\-returnCodes\fR attribute supplies \fIexpectedCodeList\fR, |
---|
506 | a list of return codes that may be accepted from evaluation of the |
---|
507 | \fB\-body\fR script. If evaluation of the \fB\-body\fR script returns |
---|
508 | a code not in the \fIexpectedCodeList\fR, the test fails. All |
---|
509 | return codes known to \fBreturn\fR, in both numeric and symbolic |
---|
510 | form, including extended return codes, are acceptable elements in |
---|
511 | the \fIexpectedCodeList\fR. Default value is |
---|
512 | .QW \fBok return\fR. |
---|
513 | .PP |
---|
514 | To pass, a test must successfully evaluate its \fB\-setup\fR, \fB\-body\fR, |
---|
515 | and \fB\-cleanup\fR scripts. The return code of the \fB\-body\fR script and |
---|
516 | its result must match expected values, and if specified, output and error |
---|
517 | data from the test must match expected \fB\-output\fR and \fB\-errorOutput\fR |
---|
518 | values. If any of these conditions are not met, then the test fails. |
---|
519 | Note that all scripts are evaluated in the context of the caller |
---|
520 | of \fBtest\fR. |
---|
521 | .PP |
---|
522 | As long as \fBtest\fR is called with valid syntax and legal |
---|
523 | values for all attributes, it will not raise an error. Test |
---|
524 | failures are instead reported as output written to \fBoutputChannel\fR. |
---|
525 | In default operation, a successful test produces no output. The output |
---|
526 | messages produced by \fBtest\fR are controlled by the |
---|
527 | \fBconfigure \-verbose\fR option as described in \fBCONFIGURABLE OPTIONS\fR |
---|
528 | below. Any output produced by the test scripts themselves should be |
---|
529 | produced using \fB::puts\fR to \fBoutputChannel\fR or |
---|
530 | \fBerrorChannel\fR, so that users of the test suite may |
---|
531 | easily capture output with the \fBconfigure \-outfile\fR and |
---|
532 | \fBconfigure \-errfile\fR options, and so that the \fB\-output\fR |
---|
533 | and \fB\-errorOutput\fR attributes work properly. |
---|
534 | .SH "TEST CONSTRAINTS" |
---|
535 | .PP |
---|
536 | Constraints are used to determine whether or not a test should be skipped. |
---|
537 | Each constraint has a name, which may be any string, and a boolean |
---|
538 | value. Each \fBtest\fR has a \fB\-constraints\fR value which is a |
---|
539 | list of constraint names. There are two modes of constraint control. |
---|
540 | Most frequently, the default mode is used, indicated by a setting |
---|
541 | of \fBconfigure \-limitconstraints\fR to false. The test will run |
---|
542 | only if all constraints in the list are true-valued. Thus, |
---|
543 | the \fB\-constraints\fR option of \fBtest\fR is a convenient, symbolic |
---|
544 | way to define any conditions required for the test to be possible or |
---|
545 | meaningful. For example, a \fBtest\fR with \fB\-constraints unix\fR |
---|
546 | will only be run if the constraint \fBunix\fR is true, which indicates |
---|
547 | the test suite is being run on a Unix platform. |
---|
548 | .PP |
---|
549 | Each \fBtest\fR should include whatever \fB\-constraints\fR are |
---|
550 | required to constrain it to run only where appropriate. Several |
---|
551 | constraints are pre-defined in the \fBtcltest\fR package, listed |
---|
552 | below. The registration of user-defined constraints is performed |
---|
553 | by the \fBtestConstraint\fR command. User-defined constraints |
---|
554 | may appear within a test file, or within the script specified |
---|
555 | by the \fBconfigure \-load\fR or \fBconfigure \-loadfile\fR |
---|
556 | options. |
---|
557 | .PP |
---|
558 | The following is a list of constraints pre-defined by the |
---|
559 | \fBtcltest\fR package itself: |
---|
560 | .TP |
---|
561 | \fIsingleTestInterp\fR |
---|
562 | test can only be run if all test files are sourced into a single interpreter |
---|
563 | .TP |
---|
564 | \fIunix\fR |
---|
565 | test can only be run on any Unix platform |
---|
566 | .TP |
---|
567 | \fIwin\fR |
---|
568 | test can only be run on any Windows platform |
---|
569 | .TP |
---|
570 | \fInt\fR |
---|
571 | test can only be run on any Windows NT platform |
---|
572 | .TP |
---|
573 | \fI95\fR |
---|
574 | test can only be run on any Windows 95 platform |
---|
575 | .TP |
---|
576 | \fI98\fR |
---|
577 | test can only be run on any Windows 98 platform |
---|
578 | .TP |
---|
579 | \fImac\fR |
---|
580 | test can only be run on any Mac platform |
---|
581 | .TP |
---|
582 | \fIunixOrWin\fR |
---|
583 | test can only be run on a Unix or Windows platform |
---|
584 | .TP |
---|
585 | \fImacOrWin\fR |
---|
586 | test can only be run on a Mac or Windows platform |
---|
587 | .TP |
---|
588 | \fImacOrUnix\fR |
---|
589 | test can only be run on a Mac or Unix platform |
---|
590 | .TP |
---|
591 | \fItempNotWin\fR |
---|
592 | test can not be run on Windows. This flag is used to temporarily |
---|
593 | disable a test. |
---|
594 | .TP |
---|
595 | \fItempNotMac\fR |
---|
596 | test can not be run on a Mac. This flag is used |
---|
597 | to temporarily disable a test. |
---|
598 | .TP |
---|
599 | \fIunixCrash\fR |
---|
600 | test crashes if it is run on Unix. This flag is used to temporarily |
---|
601 | disable a test. |
---|
602 | .TP |
---|
603 | \fIwinCrash\fR |
---|
604 | test crashes if it is run on Windows. This flag is used to temporarily |
---|
605 | disable a test. |
---|
606 | .TP |
---|
607 | \fImacCrash\fR |
---|
608 | test crashes if it is run on a Mac. This flag is used to temporarily |
---|
609 | disable a test. |
---|
610 | .TP |
---|
611 | \fIemptyTest\fR |
---|
612 | test is empty, and so not worth running, but it remains as a |
---|
613 | place-holder for a test to be written in the future. This constraint |
---|
614 | has value false to cause tests to be skipped unless the user specifies |
---|
615 | otherwise. |
---|
616 | .TP |
---|
617 | \fIknownBug\fR |
---|
618 | test is known to fail and the bug is not yet fixed. This constraint |
---|
619 | has value false to cause tests to be skipped unless the user specifies |
---|
620 | otherwise. |
---|
621 | .TP |
---|
622 | \fInonPortable\fR |
---|
623 | test can only be run in some known development environment. |
---|
624 | Some tests are inherently non-portable because they depend on things |
---|
625 | like word length, file system configuration, window manager, etc. |
---|
626 | This constraint has value false to cause tests to be skipped unless |
---|
627 | the user specifies otherwise. |
---|
628 | .TP |
---|
629 | \fIuserInteraction\fR |
---|
630 | test requires interaction from the user. This constraint has |
---|
631 | value false to causes tests to be skipped unless the user specifies |
---|
632 | otherwise. |
---|
633 | .TP |
---|
634 | \fIinteractive\fR |
---|
635 | test can only be run in if the interpreter is in interactive mode |
---|
636 | (when the global tcl_interactive variable is set to 1). |
---|
637 | .TP |
---|
638 | \fInonBlockFiles\fR |
---|
639 | test can only be run if platform supports setting files into |
---|
640 | nonblocking mode |
---|
641 | .TP |
---|
642 | \fIasyncPipeClose\fR |
---|
643 | test can only be run if platform supports async flush and async close |
---|
644 | on a pipe |
---|
645 | .TP |
---|
646 | \fIunixExecs\fR |
---|
647 | test can only be run if this machine has Unix-style commands |
---|
648 | \fBcat\fR, \fBecho\fR, \fBsh\fR, \fBwc\fR, \fBrm\fR, \fBsleep\fR, |
---|
649 | \fBfgrep\fR, \fBps\fR, \fBchmod\fR, and \fBmkdir\fR available |
---|
650 | .TP |
---|
651 | \fIhasIsoLocale\fR |
---|
652 | test can only be run if can switch to an ISO locale |
---|
653 | .TP |
---|
654 | \fIroot\fR |
---|
655 | test can only run if Unix user is root |
---|
656 | .TP |
---|
657 | \fInotRoot\fR |
---|
658 | test can only run if Unix user is not root |
---|
659 | .TP |
---|
660 | \fIeformat\fR |
---|
661 | test can only run if app has a working version of sprintf with respect |
---|
662 | to the |
---|
663 | .QW e |
---|
664 | format of floating-point numbers. |
---|
665 | .TP |
---|
666 | \fIstdio\fR |
---|
667 | test can only be run if \fBinterpreter\fR can be \fBopen\fRed |
---|
668 | as a pipe. |
---|
669 | .PP |
---|
670 | The alternative mode of constraint control is enabled by setting |
---|
671 | \fBconfigure \-limitconstraints\fR to true. With that configuration |
---|
672 | setting, all existing constraints other than those in the constraint |
---|
673 | list returned by \fBconfigure \-constraints\fR are set to false. |
---|
674 | When the value of \fBconfigure \-constraints\fR |
---|
675 | is set, all those constraints are set to true. The effect is that |
---|
676 | when both options \fBconfigure \-constraints\fR and |
---|
677 | \fBconfigure \-limitconstraints\fR are in use, only those tests including |
---|
678 | only constraints from the \fBconfigure \-constraints\fR list |
---|
679 | are run; all others are skipped. For example, one might set |
---|
680 | up a configuration with |
---|
681 | .PP |
---|
682 | .CS |
---|
683 | \fBconfigure\fR -constraints knownBug \e |
---|
684 | -limitconstraints true \e |
---|
685 | -verbose pass |
---|
686 | .CE |
---|
687 | .PP |
---|
688 | to run exactly those tests that exercise known bugs, and discover |
---|
689 | whether any of them pass, indicating the bug had been fixed. |
---|
690 | .SH "RUNNING ALL TESTS" |
---|
691 | .PP |
---|
692 | The single command \fBrunAllTests\fR is evaluated to run an entire |
---|
693 | test suite, spanning many files and directories. The configuration |
---|
694 | options of \fBtcltest\fR control the precise operations. The |
---|
695 | \fBrunAllTests\fR command begins by printing a summary of its |
---|
696 | configuration to \fBoutputChannel\fR. |
---|
697 | .PP |
---|
698 | Test files to be evaluated are sought in the directory |
---|
699 | \fBconfigure \-testdir\fR. The list of files in that directory |
---|
700 | that match any of the patterns in \fBconfigure \-file\fR and |
---|
701 | match none of the patterns in \fBconfigure \-notfile\fR is generated |
---|
702 | and sorted. Then each file will be evaluated in turn. If |
---|
703 | \fBconfigure \-singleproc\fR is true, then each file will |
---|
704 | be \fBsource\fRd in the caller's context. If it is false, |
---|
705 | then a copy of \fBinterpreter\fR will be \fBexec\fR'd to |
---|
706 | evaluate each file. The multi-process operation is useful |
---|
707 | when testing can cause errors so severe that a process |
---|
708 | terminates. Although such an error may terminate a child |
---|
709 | process evaluating one file, the master process can continue |
---|
710 | with the rest of the test suite. In multi-process operation, |
---|
711 | the configuration of \fBtcltest\fR in the master process is |
---|
712 | passed to the child processes as command line arguments, |
---|
713 | with the exception of \fBconfigure \-outfile\fR. The |
---|
714 | \fBrunAllTests\fR command in the |
---|
715 | master process collects all output from the child processes |
---|
716 | and collates their results into one master report. Any |
---|
717 | reports of individual test failures, or messages requested |
---|
718 | by a \fBconfigure \-verbose\fR setting are passed directly |
---|
719 | on to \fBoutputChannel\fR by the master process. |
---|
720 | .PP |
---|
721 | After evaluating all selected test files, a summary of the |
---|
722 | results is printed to \fBoutputChannel\fR. The summary |
---|
723 | includes the total number of \fBtest\fRs evaluated, broken |
---|
724 | down into those skipped, those passed, and those failed. |
---|
725 | The summary also notes the number of files evaluated, and the names |
---|
726 | of any files with failing tests or errors. A list of |
---|
727 | the constraints that caused tests to be skipped, and the |
---|
728 | number of tests skipped for each is also printed. Also, |
---|
729 | messages are printed if it appears that evaluation of |
---|
730 | a test file has caused any temporary files to be left |
---|
731 | behind in \fBconfigure \-tmpdir\fR. |
---|
732 | .PP |
---|
733 | Having completed and summarized all selected test files, |
---|
734 | \fBrunAllTests\fR then recursively acts on subdirectories |
---|
735 | of \fBconfigure \-testdir\fR. All subdirectories that |
---|
736 | match any of the patterns in \fBconfigure \-relateddir\fR |
---|
737 | and do not match any of the patterns in |
---|
738 | \fBconfigure \-asidefromdir\fR are examined. If |
---|
739 | a file named \fBall.tcl\fR is found in such a directory, |
---|
740 | it will be \fBsource\fRd in the caller's context. |
---|
741 | Whether or not an examined directory contains an |
---|
742 | \fBall.tcl\fR file, its subdirectories are also scanned |
---|
743 | against the \fBconfigure \-relateddir\fR and |
---|
744 | \fBconfigure \-asidefromdir\fR patterns. In this way, |
---|
745 | many directories in a directory tree can have all their |
---|
746 | test files evaluated by a single \fBrunAllTests\fR |
---|
747 | command. |
---|
748 | .SH "CONFIGURABLE OPTIONS" |
---|
749 | The \fBconfigure\fR command is used to set and query the configurable |
---|
750 | options of \fBtcltest\fR. The valid options are: |
---|
751 | .TP |
---|
752 | \fB\-singleproc \fIboolean\fR |
---|
753 | Controls whether or not \fBrunAllTests\fR spawns a child process for |
---|
754 | each test file. No spawning when \fIboolean\fR is true. Default |
---|
755 | value is false. |
---|
756 | .TP |
---|
757 | \fB\-debug \fIlevel\fR |
---|
758 | Sets the debug level to \fIlevel\fR, an integer value indicating how |
---|
759 | much debugging information should be printed to stdout. Note that |
---|
760 | debug messages always go to stdout, independent of the value of |
---|
761 | \fBconfigure \-outfile\fR. Default value is 0. Levels are defined as: |
---|
762 | .RS |
---|
763 | .IP 0 |
---|
764 | Do not display any debug information. |
---|
765 | .IP 1 |
---|
766 | Display information regarding whether a test is skipped because it |
---|
767 | does not match any of the tests that were specified using by |
---|
768 | \fBconfigure \-match\fR (userSpecifiedNonMatch) or matches any of |
---|
769 | the tests specified by \fBconfigure \-skip\fR (userSpecifiedSkip). Also |
---|
770 | print warnings about possible lack of cleanup or balance in test files. |
---|
771 | Also print warnings about any re-use of test names. |
---|
772 | .IP 2 |
---|
773 | Display the flag array parsed by the command line processor, the |
---|
774 | contents of the ::env array, and all user-defined variables that exist |
---|
775 | in the current namespace as they are used. |
---|
776 | .IP 3 |
---|
777 | Display information regarding what individual procs in the test |
---|
778 | harness are doing. |
---|
779 | .RE |
---|
780 | .TP |
---|
781 | \fB\-verbose \fIlevel\fR |
---|
782 | Sets the type of output verbosity desired to \fIlevel\fR, |
---|
783 | a list of zero or more of the elements \fBbody\fR, \fBpass\fR, |
---|
784 | \fBskip\fR, \fBstart\fR, \fBerror\fR and \fBline\fR. Default value |
---|
785 | is \fB{body error}\fR. |
---|
786 | Levels are defined as: |
---|
787 | .RS |
---|
788 | .IP "body (b)" |
---|
789 | Display the body of failed tests |
---|
790 | .IP "pass (p)" |
---|
791 | Print output when a test passes |
---|
792 | .IP "skip (s)" |
---|
793 | Print output when a test is skipped |
---|
794 | .IP "start (t)" |
---|
795 | Print output whenever a test starts |
---|
796 | .IP "error (e)" |
---|
797 | Print errorInfo and errorCode, if they exist, when a test return code |
---|
798 | does not match its expected return code |
---|
799 | .IP "line (l)" |
---|
800 | Print source file line information of failed tests |
---|
801 | .RE |
---|
802 | The single letter abbreviations noted above are also recognized |
---|
803 | so that |
---|
804 | .QW "\fBconfigure \-verbose pt\fR" |
---|
805 | is the same as |
---|
806 | .QW "\fBconfigure \-verbose {pass start}\fR" . |
---|
807 | .TP |
---|
808 | \fB\-preservecore \fIlevel\fR |
---|
809 | Sets the core preservation level to \fIlevel\fR. This level |
---|
810 | determines how stringent checks for core files are. Default |
---|
811 | value is 0. Levels are defined as: |
---|
812 | .RS |
---|
813 | .IP 0 |
---|
814 | No checking \(em do not check for core files at the end of each test |
---|
815 | command, but do check for them in \fBrunAllTests\fR after all |
---|
816 | test files have been evaluated. |
---|
817 | .IP 1 |
---|
818 | Also check for core files at the end of each \fBtest\fR command. |
---|
819 | .IP 2 |
---|
820 | Check for core files at all times described above, and save a |
---|
821 | copy of each core file produced in \fBconfigure \-tmpdir\fR. |
---|
822 | .RE |
---|
823 | .TP |
---|
824 | \fB\-limitconstraints \fIboolean\fR |
---|
825 | Sets the mode by which \fBtest\fR honors constraints as described |
---|
826 | in \fBTESTS\fR above. Default value is false. |
---|
827 | .TP |
---|
828 | \fB\-constraints \fIlist\fR |
---|
829 | Sets all the constraints in \fIlist\fR to true. Also used in |
---|
830 | combination with \fBconfigure \-limitconstraints true\fR to control an |
---|
831 | alternative constraint mode as described in \fBTESTS\fR above. |
---|
832 | Default value is an empty list. |
---|
833 | .TP |
---|
834 | \fB\-tmpdir \fIdirectory\fR |
---|
835 | Sets the temporary directory to be used by \fBmakeFile\fR, |
---|
836 | \fBmakeDirectory\fR, \fBviewFile\fR, \fBremoveFile\fR, |
---|
837 | and \fBremoveDirectory\fR as the default directory where |
---|
838 | temporary files and directories created by test files should |
---|
839 | be created. Default value is \fBworkingDirectory\fR. |
---|
840 | .TP |
---|
841 | \fB\-testdir \fIdirectory\fR |
---|
842 | Sets the directory searched by \fBrunAllTests\fR for test files |
---|
843 | and subdirectories. Default value is \fBworkingDirectory\fR. |
---|
844 | .TP |
---|
845 | \fB\-file \fIpatternList\fR |
---|
846 | Sets the list of patterns used by \fBrunAllTests\fR to determine |
---|
847 | what test files to evaluate. Default value is |
---|
848 | .QW \fB*.test\fR . |
---|
849 | .TP |
---|
850 | \fB\-notfile \fIpatternList\fR |
---|
851 | Sets the list of patterns used by \fBrunAllTests\fR to determine |
---|
852 | what test files to skip. Default value is |
---|
853 | .QW \fBl.*.test\fR , |
---|
854 | so that any SCCS lock files are skipped. |
---|
855 | .TP |
---|
856 | \fB\-relateddir \fIpatternList\fR |
---|
857 | Sets the list of patterns used by \fBrunAllTests\fR to determine |
---|
858 | what subdirectories to search for an \fBall.tcl\fR file. Default |
---|
859 | value is |
---|
860 | .QW \fB*\fR . |
---|
861 | .TP |
---|
862 | \fB\-asidefromdir \fIpatternList\fR |
---|
863 | Sets the list of patterns used by \fBrunAllTests\fR to determine |
---|
864 | what subdirectories to skip when searching for an \fBall.tcl\fR file. |
---|
865 | Default value is an empty list. |
---|
866 | .TP |
---|
867 | \fB\-match \fIpatternList\fR |
---|
868 | Set the list of patterns used by \fBtest\fR to determine whether |
---|
869 | a test should be run. Default value is |
---|
870 | .QW \fB*\fR . |
---|
871 | .TP |
---|
872 | \fB\-skip \fIpatternList\fR |
---|
873 | Set the list of patterns used by \fBtest\fR to determine whether |
---|
874 | a test should be skipped. Default value is an empty list. |
---|
875 | .TP |
---|
876 | \fB\-load \fIscript\fR |
---|
877 | Sets a script to be evaluated by \fBloadTestedCommands\fR. |
---|
878 | Default value is an empty script. |
---|
879 | .TP |
---|
880 | \fB\-loadfile \fIfilename\fR |
---|
881 | Sets the filename from which to read a script to be evaluated |
---|
882 | by \fBloadTestedCommands\fR. This is an alternative to |
---|
883 | \fB\-load\fR. They cannot be used together. |
---|
884 | .TP |
---|
885 | \fB\-outfile \fIfilename\fR |
---|
886 | Sets the file to which all output produced by tcltest should be |
---|
887 | written. A file named \fIfilename\fR will be \fBopen\fRed for writing, |
---|
888 | and the resulting channel will be set as the value of \fBoutputChannel\fR. |
---|
889 | .TP |
---|
890 | \fB\-errfile \fIfilename\fR |
---|
891 | Sets the file to which all error output produced by tcltest |
---|
892 | should be written. A file named \fIfilename\fR will be \fBopen\fRed |
---|
893 | for writing, and the resulting channel will be set as the value |
---|
894 | of \fBerrorChannel\fR. |
---|
895 | .SH "CREATING TEST SUITES WITH TCLTEST" |
---|
896 | .PP |
---|
897 | The fundamental element of a test suite is the individual \fBtest\fR |
---|
898 | command. We begin with several examples. |
---|
899 | .IP [1] |
---|
900 | Test of a script that returns normally. |
---|
901 | .RS |
---|
902 | .PP |
---|
903 | .CS |
---|
904 | \fBtest\fR example-1.0 {normal return} { |
---|
905 | format %s value |
---|
906 | } value |
---|
907 | .CE |
---|
908 | .RE |
---|
909 | .IP [2] |
---|
910 | Test of a script that requires context setup and cleanup. Note the |
---|
911 | bracing and indenting style that avoids any need for line continuation. |
---|
912 | .RS |
---|
913 | .PP |
---|
914 | .CS |
---|
915 | \fBtest\fR example-1.1 {test file existence} -setup { |
---|
916 | set file [makeFile {} test] |
---|
917 | } -body { |
---|
918 | file exists $file |
---|
919 | } -cleanup { |
---|
920 | removeFile test |
---|
921 | } -result 1 |
---|
922 | .CE |
---|
923 | .RE |
---|
924 | .IP [3] |
---|
925 | Test of a script that raises an error. |
---|
926 | .RS |
---|
927 | .PP |
---|
928 | .CS |
---|
929 | \fBtest\fR example-1.2 {error return} -body { |
---|
930 | error message |
---|
931 | } -returnCodes error -result message |
---|
932 | .CE |
---|
933 | .RE |
---|
934 | .IP [4] |
---|
935 | Test with a constraint. |
---|
936 | .RS |
---|
937 | .PP |
---|
938 | .CS |
---|
939 | \fBtest\fR example-1.3 {user owns created files} -constraints { |
---|
940 | unix |
---|
941 | } -setup { |
---|
942 | set file [makeFile {} test] |
---|
943 | } -body { |
---|
944 | file attributes $file -owner |
---|
945 | } -cleanup { |
---|
946 | removeFile test |
---|
947 | } -result $::tcl_platform(user) |
---|
948 | .CE |
---|
949 | .RE |
---|
950 | .PP |
---|
951 | At the next higher layer of organization, several \fBtest\fR commands |
---|
952 | are gathered together into a single test file. Test files should have |
---|
953 | names with the \fB.test\fR extension, because that is the default pattern |
---|
954 | used by \fBrunAllTests\fR to find test files. It is a good rule of |
---|
955 | thumb to have one test file for each source code file of your project. |
---|
956 | It is good practice to edit the test file and the source code file |
---|
957 | together, keeping tests synchronized with code changes. |
---|
958 | .PP |
---|
959 | Most of the code in the test file should be the \fBtest\fR commands. |
---|
960 | Use constraints to skip tests, rather than conditional evaluation |
---|
961 | of \fBtest\fR. |
---|
962 | .IP [5] |
---|
963 | Recommended system for writing conditional tests, using constraints to |
---|
964 | guard: |
---|
965 | .RS |
---|
966 | .PP |
---|
967 | .CS |
---|
968 | \fBtestConstraint\fR X [expr $myRequirement] |
---|
969 | \fBtest\fR goodConditionalTest {} X { |
---|
970 | # body |
---|
971 | } result |
---|
972 | .CE |
---|
973 | .RE |
---|
974 | .IP [6] |
---|
975 | Discouraged system for writing conditional tests, using \fBif\fR to |
---|
976 | guard: |
---|
977 | .RS |
---|
978 | .PP |
---|
979 | .CS |
---|
980 | if $myRequirement { |
---|
981 | test badConditionalTest {} { |
---|
982 | #body |
---|
983 | } result |
---|
984 | } |
---|
985 | .CE |
---|
986 | .RE |
---|
987 | .PP |
---|
988 | Use the \fB\-setup\fR and \fB\-cleanup\fR options to establish and release |
---|
989 | all context requirements of the test body. Do not make tests depend on |
---|
990 | prior tests in the file. Those prior tests might be skipped. If several |
---|
991 | consecutive tests require the same context, the appropriate setup |
---|
992 | and cleanup scripts may be stored in variable for passing to each tests |
---|
993 | \fB\-setup\fR and \fB\-cleanup\fR options. This is a better solution than |
---|
994 | performing setup outside of \fBtest\fR commands, because the setup will |
---|
995 | only be done if necessary, and any errors during setup will be reported, |
---|
996 | and not cause the test file to abort. |
---|
997 | .PP |
---|
998 | A test file should be able to be combined with other test files and not |
---|
999 | interfere with them, even when \fBconfigure \-singleproc 1\fR causes |
---|
1000 | all files to be evaluated in a common interpreter. A simple way to |
---|
1001 | achieve this is to have your tests define all their commands and variables |
---|
1002 | in a namespace that is deleted when the test file evaluation is complete. |
---|
1003 | A good namespace to use is a child namespace \fBtest\fR of the namespace |
---|
1004 | of the module you are testing. |
---|
1005 | .PP |
---|
1006 | A test file should also be able to be evaluated directly as a script, |
---|
1007 | not depending on being called by a master \fBrunAllTests\fR. This |
---|
1008 | means that each test file should process command line arguments to give |
---|
1009 | the tester all the configuration control that \fBtcltest\fR provides. |
---|
1010 | .PP |
---|
1011 | After all \fBtest\fRs in a test file, the command \fBcleanupTests\fR |
---|
1012 | should be called. |
---|
1013 | .IP [7] |
---|
1014 | Here is a sketch of a sample test file illustrating those points: |
---|
1015 | .RS |
---|
1016 | .PP |
---|
1017 | .CS |
---|
1018 | package require tcltest 2.2 |
---|
1019 | eval \fB::tcltest::configure\fR $argv |
---|
1020 | package require example |
---|
1021 | namespace eval ::example::test { |
---|
1022 | namespace import ::tcltest::* |
---|
1023 | \fBtestConstraint\fR X [expr {...}] |
---|
1024 | variable SETUP {#common setup code} |
---|
1025 | variable CLEANUP {#common cleanup code} |
---|
1026 | \fBtest\fR example-1 {} -setup $SETUP -body { |
---|
1027 | # First test |
---|
1028 | } -cleanup $CLEANUP -result {...} |
---|
1029 | \fBtest\fR example-2 {} -constraints X -setup $SETUP -body { |
---|
1030 | # Second test; constrained |
---|
1031 | } -cleanup $CLEANUP -result {...} |
---|
1032 | \fBtest\fR example-3 {} { |
---|
1033 | # Third test; no context required |
---|
1034 | } {...} |
---|
1035 | \fBcleanupTests\fR |
---|
1036 | } |
---|
1037 | namespace delete ::example::test |
---|
1038 | .CE |
---|
1039 | .RE |
---|
1040 | .PP |
---|
1041 | The next level of organization is a full test suite, made up of several |
---|
1042 | test files. One script is used to control the entire suite. The |
---|
1043 | basic function of this script is to call \fBrunAllTests\fR after |
---|
1044 | doing any necessary setup. This script is usually named \fBall.tcl\fR |
---|
1045 | because that is the default name used by \fBrunAllTests\fR when combining |
---|
1046 | multiple test suites into one testing run. |
---|
1047 | .IP [8] |
---|
1048 | Here is a sketch of a sample test suite master script: |
---|
1049 | .RS |
---|
1050 | .PP |
---|
1051 | .CS |
---|
1052 | package require Tcl 8.4 |
---|
1053 | package require tcltest 2.2 |
---|
1054 | package require example |
---|
1055 | \fB::tcltest::configure\fR -testdir \e |
---|
1056 | [file dirname [file normalize [info script]]] |
---|
1057 | eval \fB::tcltest::configure\fR $argv |
---|
1058 | \fB::tcltest::runAllTests\fR |
---|
1059 | .CE |
---|
1060 | .RE |
---|
1061 | .SH COMPATIBILITY |
---|
1062 | .PP |
---|
1063 | A number of commands and variables in the \fB::tcltest\fR namespace |
---|
1064 | provided by earlier releases of \fBtcltest\fR have not been documented |
---|
1065 | here. They are no longer part of the supported public interface of |
---|
1066 | \fBtcltest\fR and should not be used in new test suites. However, |
---|
1067 | to continue to support existing test suites written to the older |
---|
1068 | interface specifications, many of those deprecated commands and |
---|
1069 | variables still work as before. For example, in many circumstances, |
---|
1070 | \fBconfigure\fR will be automatically called shortly after |
---|
1071 | \fBpackage require tcltest 2.1\fR succeeds with arguments |
---|
1072 | from the variable \fB::argv\fR. This is to support test suites |
---|
1073 | that depend on the old behavior that \fBtcltest\fR was automatically |
---|
1074 | configured from command line arguments. New test files should not |
---|
1075 | depend on this, but should explicitly include |
---|
1076 | .PP |
---|
1077 | .CS |
---|
1078 | eval \fB::tcltest::configure\fR $::argv |
---|
1079 | .CE |
---|
1080 | .PP |
---|
1081 | to establish a configuration from command line arguments. |
---|
1082 | .SH "KNOWN ISSUES" |
---|
1083 | There are two known issues related to nested evaluations of \fBtest\fR. |
---|
1084 | The first issue relates to the stack level in which test scripts are |
---|
1085 | executed. Tests nested within other tests may be executed at the same |
---|
1086 | stack level as the outermost test. For example, in the following code: |
---|
1087 | .PP |
---|
1088 | .CS |
---|
1089 | \fBtest\fR level-1.1 {level 1} { |
---|
1090 | -body { |
---|
1091 | \fBtest\fR level-2.1 {level 2} { |
---|
1092 | } |
---|
1093 | } |
---|
1094 | } |
---|
1095 | .CE |
---|
1096 | .PP |
---|
1097 | any script executed in level-2.1 may be executed at the same stack |
---|
1098 | level as the script defined for level-1.1. |
---|
1099 | .PP |
---|
1100 | In addition, while two \fBtest\fRs have been run, results will only |
---|
1101 | be reported by \fBcleanupTests\fR for tests at the same level as |
---|
1102 | test level-1.1. However, test results for all tests run prior to |
---|
1103 | level-1.1 will be available when test level-2.1 runs. What this |
---|
1104 | means is that if you try to access the test results for test level-2.1, |
---|
1105 | it will may say that |
---|
1106 | .QW m |
---|
1107 | tests have run, |
---|
1108 | .QW n |
---|
1109 | tests have been skipped, |
---|
1110 | .QW o |
---|
1111 | tests have passed and |
---|
1112 | .QW p |
---|
1113 | tests have failed, where |
---|
1114 | .QW m , |
---|
1115 | .QW n , |
---|
1116 | .QW o , |
---|
1117 | and |
---|
1118 | .QW p |
---|
1119 | refer to tests that were run at the same test level as test level-1.1. |
---|
1120 | .PP |
---|
1121 | Implementation of output and error comparison in the test command |
---|
1122 | depends on usage of ::puts in your application code. Output is |
---|
1123 | intercepted by redefining the ::puts command while the defined test |
---|
1124 | script is being run. Errors thrown by C procedures or printed |
---|
1125 | directly from C applications will not be caught by the test command. |
---|
1126 | Therefore, usage of the \fB\-output\fR and \fB\-errorOutput\fR |
---|
1127 | options to \fBtest\fR is useful only for pure Tcl applications |
---|
1128 | that use \fB::puts\fR to produce output. |
---|
1129 | .SH KEYWORDS |
---|
1130 | test, test harness, test suite |
---|