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annotate utils/unittest/googletest/include/gtest/gtest-death-test.h @ 75:90677c4a880a

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emit warning when function prototype is not exactly.
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Sun, 04 May 2014 02:24:57 +0900
parents 95c75e76d11b
children 803732b1fca8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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1 // Copyright 2005, Google Inc.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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2 // All rights reserved.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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3 //
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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4 // Redistribution and use in source and binary forms, with or without
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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5 // modification, are permitted provided that the following conditions are
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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6 // met:
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7 //
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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8 // * Redistributions of source code must retain the above copyright
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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9 // notice, this list of conditions and the following disclaimer.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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10 // * Redistributions in binary form must reproduce the above
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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11 // copyright notice, this list of conditions and the following disclaimer
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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12 // in the documentation and/or other materials provided with the
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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13 // distribution.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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14 // * Neither the name of Google Inc. nor the names of its
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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15 // contributors may be used to endorse or promote products derived from
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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16 // this software without specific prior written permission.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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17 //
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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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 // The Google C++ Testing Framework (Google Test)
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33 //
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34 // This header file defines the public API for death tests. It is
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35 // #included by gtest.h so a user doesn't need to include this
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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36 // directly.
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37
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38 #ifndef GTEST_INCLUDE_GTEST_GTEST_DEATH_TEST_H_
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39 #define GTEST_INCLUDE_GTEST_GTEST_DEATH_TEST_H_
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40
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41 #include "gtest/internal/gtest-death-test-internal.h"
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42
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43 namespace testing {
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44
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45 // This flag controls the style of death tests. Valid values are "threadsafe",
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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46 // meaning that the death test child process will re-execute the test binary
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47 // from the start, running only a single death test, or "fast",
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48 // meaning that the child process will execute the test logic immediately
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49 // after forking.
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50 GTEST_DECLARE_string_(death_test_style);
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51
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52 #if GTEST_HAS_DEATH_TEST
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53
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54 // The following macros are useful for writing death tests.
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55
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56 // Here's what happens when an ASSERT_DEATH* or EXPECT_DEATH* is
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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57 // executed:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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58 //
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59 // 1. It generates a warning if there is more than one active
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60 // thread. This is because it's safe to fork() or clone() only
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61 // when there is a single thread.
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62 //
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63 // 2. The parent process clone()s a sub-process and runs the death
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64 // test in it; the sub-process exits with code 0 at the end of the
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65 // death test, if it hasn't exited already.
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66 //
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67 // 3. The parent process waits for the sub-process to terminate.
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68 //
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69 // 4. The parent process checks the exit code and error message of
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70 // the sub-process.
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71 //
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72 // Examples:
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73 //
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74 // ASSERT_DEATH(server.SendMessage(56, "Hello"), "Invalid port number");
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75 // for (int i = 0; i < 5; i++) {
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76 // EXPECT_DEATH(server.ProcessRequest(i),
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77 // "Invalid request .* in ProcessRequest()")
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78 // << "Failed to die on request " << i);
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79 // }
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80 //
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81 // ASSERT_EXIT(server.ExitNow(), ::testing::ExitedWithCode(0), "Exiting");
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82 //
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83 // bool KilledBySIGHUP(int exit_code) {
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84 // return WIFSIGNALED(exit_code) && WTERMSIG(exit_code) == SIGHUP;
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85 // }
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86 //
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87 // ASSERT_EXIT(client.HangUpServer(), KilledBySIGHUP, "Hanging up!");
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88 //
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89 // On the regular expressions used in death tests:
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90 //
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91 // On POSIX-compliant systems (*nix), we use the <regex.h> library,
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92 // which uses the POSIX extended regex syntax.
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93 //
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94 // On other platforms (e.g. Windows), we only support a simple regex
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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95 // syntax implemented as part of Google Test. This limited
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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96 // implementation should be enough most of the time when writing
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97 // death tests; though it lacks many features you can find in PCRE
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98 // or POSIX extended regex syntax. For example, we don't support
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99 // union ("x|y"), grouping ("(xy)"), brackets ("[xy]"), and
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100 // repetition count ("x{5,7}"), among others.
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101 //
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102 // Below is the syntax that we do support. We chose it to be a
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103 // subset of both PCRE and POSIX extended regex, so it's easy to
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104 // learn wherever you come from. In the following: 'A' denotes a
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105 // literal character, period (.), or a single \\ escape sequence;
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106 // 'x' and 'y' denote regular expressions; 'm' and 'n' are for
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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107 // natural numbers.
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108 //
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109 // c matches any literal character c
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110 // \\d matches any decimal digit
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111 // \\D matches any character that's not a decimal digit
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112 // \\f matches \f
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113 // \\n matches \n
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114 // \\r matches \r
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115 // \\s matches any ASCII whitespace, including \n
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116 // \\S matches any character that's not a whitespace
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117 // \\t matches \t
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118 // \\v matches \v
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119 // \\w matches any letter, _, or decimal digit
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120 // \\W matches any character that \\w doesn't match
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121 // \\c matches any literal character c, which must be a punctuation
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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122 // . matches any single character except \n
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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123 // A? matches 0 or 1 occurrences of A
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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124 // A* matches 0 or many occurrences of A
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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125 // A+ matches 1 or many occurrences of A
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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126 // ^ matches the beginning of a string (not that of each line)
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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127 // $ matches the end of a string (not that of each line)
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128 // xy matches x followed by y
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129 //
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130 // If you accidentally use PCRE or POSIX extended regex features
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parents:
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131 // not implemented by us, you will get a run-time failure. In that
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132 // case, please try to rewrite your regular expression within the
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diff changeset
133 // above syntax.
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134 //
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135 // This implementation is *not* meant to be as highly tuned or robust
95c75e76d11b LLVM 3.4
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parents:
diff changeset
136 // as a compiled regex library, but should perform well enough for a
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parents:
diff changeset
137 // death test, which already incurs significant overhead by launching
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
138 // a child process.
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139 //
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parents:
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140 // Known caveats:
95c75e76d11b LLVM 3.4
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parents:
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141 //
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parents:
diff changeset
142 // A "threadsafe" style death test obtains the path to the test
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
143 // program from argv[0] and re-executes it in the sub-process. For
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
144 // simplicity, the current implementation doesn't search the PATH
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
145 // when launching the sub-process. This means that the user must
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parents:
diff changeset
146 // invoke the test program via a path that contains at least one
95c75e76d11b LLVM 3.4
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parents:
diff changeset
147 // path separator (e.g. path/to/foo_test and
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
148 // /absolute/path/to/bar_test are fine, but foo_test is not). This
95c75e76d11b LLVM 3.4
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parents:
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149 // is rarely a problem as people usually don't put the test binary
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parents:
diff changeset
150 // directory in PATH.
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parents:
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151 //
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parents:
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152 // TODO(wan@google.com): make thread-safe death tests search the PATH.
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153
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154 // Asserts that a given statement causes the program to exit, with an
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parents:
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155 // integer exit status that satisfies predicate, and emitting error output
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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156 // that matches regex.
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157 # define ASSERT_EXIT(statement, predicate, regex) \
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158 GTEST_DEATH_TEST_(statement, predicate, regex, GTEST_FATAL_FAILURE_)
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159
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160 // Like ASSERT_EXIT, but continues on to successive tests in the
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parents:
diff changeset
161 // test case, if any:
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parents:
diff changeset
162 # define EXPECT_EXIT(statement, predicate, regex) \
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163 GTEST_DEATH_TEST_(statement, predicate, regex, GTEST_NONFATAL_FAILURE_)
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164
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165 // Asserts that a given statement causes the program to exit, either by
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parents:
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166 // explicitly exiting with a nonzero exit code or being killed by a
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
167 // signal, and emitting error output that matches regex.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
168 # define ASSERT_DEATH(statement, regex) \
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parents:
diff changeset
169 ASSERT_EXIT(statement, ::testing::internal::ExitedUnsuccessfully, regex)
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parents:
diff changeset
170
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parents:
diff changeset
171 // Like ASSERT_DEATH, but continues on to successive tests in the
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
172 // test case, if any:
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parents:
diff changeset
173 # define EXPECT_DEATH(statement, regex) \
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174 EXPECT_EXIT(statement, ::testing::internal::ExitedUnsuccessfully, regex)
95c75e76d11b LLVM 3.4
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diff changeset
175
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diff changeset
176 // Two predicate classes that can be used in {ASSERT,EXPECT}_EXIT*:
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parents:
diff changeset
177
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diff changeset
178 // Tests that an exit code describes a normal exit with a given exit code.
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diff changeset
179 class GTEST_API_ ExitedWithCode {
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diff changeset
180 public:
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181 explicit ExitedWithCode(int exit_code);
95c75e76d11b LLVM 3.4
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diff changeset
182 bool operator()(int exit_status) const;
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183 private:
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parents:
diff changeset
184 // No implementation - assignment is unsupported.
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diff changeset
185 void operator=(const ExitedWithCode& other);
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diff changeset
186
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187 const int exit_code_;
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188 };
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189
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diff changeset
190 # if !GTEST_OS_WINDOWS
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191 // Tests that an exit code describes an exit due to termination by a
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parents:
diff changeset
192 // given signal.
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193 class GTEST_API_ KilledBySignal {
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194 public:
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195 explicit KilledBySignal(int signum);
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196 bool operator()(int exit_status) const;
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197 private:
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198 const int signum_;
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199 };
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200 # endif // !GTEST_OS_WINDOWS
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201
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202 // EXPECT_DEBUG_DEATH asserts that the given statements die in debug mode.
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203 // The death testing framework causes this to have interesting semantics,
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204 // since the sideeffects of the call are only visible in opt mode, and not
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205 // in debug mode.
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parents:
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206 //
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parents:
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207 // In practice, this can be used to test functions that utilize the
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208 // LOG(DFATAL) macro using the following style:
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209 //
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210 // int DieInDebugOr12(int* sideeffect) {
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diff changeset
211 // if (sideeffect) {
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parents:
diff changeset
212 // *sideeffect = 12;
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parents:
diff changeset
213 // }
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diff changeset
214 // LOG(DFATAL) << "death";
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parents:
diff changeset
215 // return 12;
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parents:
diff changeset
216 // }
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parents:
diff changeset
217 //
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parents:
diff changeset
218 // TEST(TestCase, TestDieOr12WorksInDgbAndOpt) {
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parents:
diff changeset
219 // int sideeffect = 0;
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diff changeset
220 // // Only asserts in dbg.
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diff changeset
221 // EXPECT_DEBUG_DEATH(DieInDebugOr12(&sideeffect), "death");
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parents:
diff changeset
222 //
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parents:
diff changeset
223 // #ifdef NDEBUG
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parents:
diff changeset
224 // // opt-mode has sideeffect visible.
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parents:
diff changeset
225 // EXPECT_EQ(12, sideeffect);
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parents:
diff changeset
226 // #else
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parents:
diff changeset
227 // // dbg-mode no visible sideeffect.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
228 // EXPECT_EQ(0, sideeffect);
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
229 // #endif
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parents:
diff changeset
230 // }
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parents:
diff changeset
231 //
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parents:
diff changeset
232 // This will assert that DieInDebugReturn12InOpt() crashes in debug
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parents:
diff changeset
233 // mode, usually due to a DCHECK or LOG(DFATAL), but returns the
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parents:
diff changeset
234 // appropriate fallback value (12 in this case) in opt mode. If you
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
235 // need to test that a function has appropriate side-effects in opt
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
236 // mode, include assertions against the side-effects. A general
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
237 // pattern for this is:
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parents:
diff changeset
238 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
239 // EXPECT_DEBUG_DEATH({
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parents:
diff changeset
240 // // Side-effects here will have an effect after this statement in
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
241 // // opt mode, but none in debug mode.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
242 // EXPECT_EQ(12, DieInDebugOr12(&sideeffect));
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
243 // }, "death");
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
244 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
245 # ifdef NDEBUG
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diff changeset
246
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diff changeset
247 # define EXPECT_DEBUG_DEATH(statement, regex) \
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parents:
diff changeset
248 do { statement; } while (::testing::internal::AlwaysFalse())
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diff changeset
249
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diff changeset
250 # define ASSERT_DEBUG_DEATH(statement, regex) \
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parents:
diff changeset
251 do { statement; } while (::testing::internal::AlwaysFalse())
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diff changeset
252
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diff changeset
253 # else
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parents:
diff changeset
254
95c75e76d11b LLVM 3.4
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parents:
diff changeset
255 # define EXPECT_DEBUG_DEATH(statement, regex) \
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diff changeset
256 EXPECT_DEATH(statement, regex)
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parents:
diff changeset
257
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parents:
diff changeset
258 # define ASSERT_DEBUG_DEATH(statement, regex) \
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259 ASSERT_DEATH(statement, regex)
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260
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261 # endif // NDEBUG for EXPECT_DEBUG_DEATH
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262 #endif // GTEST_HAS_DEATH_TEST
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263
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264 // EXPECT_DEATH_IF_SUPPORTED(statement, regex) and
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265 // ASSERT_DEATH_IF_SUPPORTED(statement, regex) expand to real death tests if
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266 // death tests are supported; otherwise they just issue a warning. This is
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267 // useful when you are combining death test assertions with normal test
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268 // assertions in one test.
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269 #if GTEST_HAS_DEATH_TEST
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270 # define EXPECT_DEATH_IF_SUPPORTED(statement, regex) \
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271 EXPECT_DEATH(statement, regex)
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272 # define ASSERT_DEATH_IF_SUPPORTED(statement, regex) \
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273 ASSERT_DEATH(statement, regex)
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274 #else
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275 # define EXPECT_DEATH_IF_SUPPORTED(statement, regex) \
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276 GTEST_UNSUPPORTED_DEATH_TEST_(statement, regex, )
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277 # define ASSERT_DEATH_IF_SUPPORTED(statement, regex) \
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278 GTEST_UNSUPPORTED_DEATH_TEST_(statement, regex, return)
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279 #endif
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280
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281 } // namespace testing
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282
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283 #endif // GTEST_INCLUDE_GTEST_GTEST_DEATH_TEST_H_