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1 | #!/usr/bin/env python |
2 | # | |
3 | # Copyright 2009, Google Inc. | |
4 | # All rights reserved. | |
5 | # | |
6 | # Redistribution and use in source and binary forms, with or without | |
7 | # modification, are permitted provided that the following conditions are | |
8 | # met: | |
9 | # | |
10 | # * Redistributions of source code must retain the above copyright | |
11 | # notice, this list of conditions and the following disclaimer. | |
12 | # * Redistributions in binary form must reproduce the above | |
13 | # copyright notice, this list of conditions and the following disclaimer | |
14 | # in the documentation and/or other materials provided with the | |
15 | # distribution. | |
16 | # * Neither the name of Google Inc. nor the names of its | |
17 | # contributors may be used to endorse or promote products derived from | |
18 | # this software without specific prior written permission. | |
19 | # | |
20 | # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
21 | # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
22 | # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
23 | # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
24 | # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
25 | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
26 | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
27 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
28 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
29 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
30 | # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
31 | ||
32 | """Tests Google Test's throw-on-failure mode with exceptions disabled. | |
33 | ||
1e59de90 | 34 | This script invokes googletest-throw-on-failure-test_ (a program written with |
31f18b77 FG |
35 | Google Test) with different environments and command line flags. |
36 | """ | |
37 | ||
31f18b77 FG |
38 | import os |
39 | import gtest_test_utils | |
40 | ||
41 | ||
42 | # Constants. | |
43 | ||
44 | # The command line flag for enabling/disabling the throw-on-failure mode. | |
45 | THROW_ON_FAILURE = 'gtest_throw_on_failure' | |
46 | ||
1e59de90 | 47 | # Path to the googletest-throw-on-failure-test_ program, compiled with |
31f18b77 FG |
48 | # exceptions disabled. |
49 | EXE_PATH = gtest_test_utils.GetTestExecutablePath( | |
1e59de90 | 50 | 'googletest-throw-on-failure-test_') |
31f18b77 FG |
51 | |
52 | ||
53 | # Utilities. | |
54 | ||
55 | ||
56 | def SetEnvVar(env_var, value): | |
57 | """Sets an environment variable to a given value; unsets it when the | |
58 | given value is None. | |
59 | """ | |
60 | ||
61 | env_var = env_var.upper() | |
62 | if value is not None: | |
63 | os.environ[env_var] = value | |
64 | elif env_var in os.environ: | |
65 | del os.environ[env_var] | |
66 | ||
67 | ||
68 | def Run(command): | |
69 | """Runs a command; returns True/False if its exit code is/isn't 0.""" | |
70 | ||
71 | print('Running "%s". . .' % ' '.join(command)) | |
72 | p = gtest_test_utils.Subprocess(command) | |
73 | return p.exited and p.exit_code == 0 | |
74 | ||
75 | ||
1e59de90 | 76 | # The tests. |
31f18b77 FG |
77 | class ThrowOnFailureTest(gtest_test_utils.TestCase): |
78 | """Tests the throw-on-failure mode.""" | |
79 | ||
80 | def RunAndVerify(self, env_var_value, flag_value, should_fail): | |
1e59de90 | 81 | """Runs googletest-throw-on-failure-test_ and verifies that it does |
31f18b77 FG |
82 | (or does not) exit with a non-zero code. |
83 | ||
84 | Args: | |
85 | env_var_value: value of the GTEST_BREAK_ON_FAILURE environment | |
86 | variable; None if the variable should be unset. | |
87 | flag_value: value of the --gtest_break_on_failure flag; | |
88 | None if the flag should not be present. | |
1e59de90 | 89 | should_fail: True if and only if the program is expected to fail. |
31f18b77 FG |
90 | """ |
91 | ||
92 | SetEnvVar(THROW_ON_FAILURE, env_var_value) | |
93 | ||
94 | if env_var_value is None: | |
95 | env_var_value_msg = ' is not set' | |
96 | else: | |
97 | env_var_value_msg = '=' + env_var_value | |
98 | ||
99 | if flag_value is None: | |
100 | flag = '' | |
101 | elif flag_value == '0': | |
102 | flag = '--%s=0' % THROW_ON_FAILURE | |
103 | else: | |
104 | flag = '--%s' % THROW_ON_FAILURE | |
105 | ||
106 | command = [EXE_PATH] | |
107 | if flag: | |
108 | command.append(flag) | |
109 | ||
110 | if should_fail: | |
111 | should_or_not = 'should' | |
112 | else: | |
113 | should_or_not = 'should not' | |
114 | ||
115 | failed = not Run(command) | |
116 | ||
117 | SetEnvVar(THROW_ON_FAILURE, None) | |
118 | ||
119 | msg = ('when %s%s, an assertion failure in "%s" %s cause a non-zero ' | |
120 | 'exit code.' % | |
121 | (THROW_ON_FAILURE, env_var_value_msg, ' '.join(command), | |
122 | should_or_not)) | |
123 | self.assert_(failed == should_fail, msg) | |
124 | ||
125 | def testDefaultBehavior(self): | |
126 | """Tests the behavior of the default mode.""" | |
127 | ||
128 | self.RunAndVerify(env_var_value=None, flag_value=None, should_fail=False) | |
129 | ||
130 | def testThrowOnFailureEnvVar(self): | |
131 | """Tests using the GTEST_THROW_ON_FAILURE environment variable.""" | |
132 | ||
133 | self.RunAndVerify(env_var_value='0', | |
134 | flag_value=None, | |
135 | should_fail=False) | |
136 | self.RunAndVerify(env_var_value='1', | |
137 | flag_value=None, | |
138 | should_fail=True) | |
139 | ||
140 | def testThrowOnFailureFlag(self): | |
141 | """Tests using the --gtest_throw_on_failure flag.""" | |
142 | ||
143 | self.RunAndVerify(env_var_value=None, | |
144 | flag_value='0', | |
145 | should_fail=False) | |
146 | self.RunAndVerify(env_var_value=None, | |
147 | flag_value='1', | |
148 | should_fail=True) | |
149 | ||
150 | def testThrowOnFailureFlagOverridesEnvVar(self): | |
151 | """Tests that --gtest_throw_on_failure overrides GTEST_THROW_ON_FAILURE.""" | |
152 | ||
153 | self.RunAndVerify(env_var_value='0', | |
154 | flag_value='0', | |
155 | should_fail=False) | |
156 | self.RunAndVerify(env_var_value='0', | |
157 | flag_value='1', | |
158 | should_fail=True) | |
159 | self.RunAndVerify(env_var_value='1', | |
160 | flag_value='0', | |
161 | should_fail=False) | |
162 | self.RunAndVerify(env_var_value='1', | |
163 | flag_value='1', | |
164 | should_fail=True) | |
165 | ||
166 | ||
167 | if __name__ == '__main__': | |
168 | gtest_test_utils.Main() |