source: gtest-1.7.0/test/gtest_throw_on_failure_test.py@ 12773

Last change on this file since 12773 was 12746, checked in by hock@…, 11 years ago

integrated the Google Testing Framework (gtest)

and wrote an Hello World test, to ensure the framework is working..
  • Property svn:executable set to *
File size: 5.6 KB
Line 
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
34This script invokes gtest_throw_on_failure_test_ (a program written with
35Google Test) with different environments and command line flags.
36"""
37
38__author__ = 'wan@google.com (Zhanyong Wan)'
39
40import os
41import gtest_test_utils
42
43
44# Constants.
45
46# The command line flag for enabling/disabling the throw-on-failure mode.
47THROW_ON_FAILURE = 'gtest_throw_on_failure'
48
49# Path to the gtest_throw_on_failure_test_ program, compiled with
50# exceptions disabled.
51EXE_PATH = gtest_test_utils.GetTestExecutablePath(
52 'gtest_throw_on_failure_test_')
53
54
55# Utilities.
56
57
58def SetEnvVar(env_var, value):
59 """Sets an environment variable to a given value; unsets it when the
60 given value is None.
61 """
62
63 env_var = env_var.upper()
64 if value is not None:
65 os.environ[env_var] = value
66 elif env_var in os.environ:
67 del os.environ[env_var]
68
69
70def Run(command):
71 """Runs a command; returns True/False if its exit code is/isn't 0."""
72
73 print 'Running "%s". . .' % ' '.join(command)
74 p = gtest_test_utils.Subprocess(command)
75 return p.exited and p.exit_code == 0
76
77
78# The tests. TODO(wan@google.com): refactor the class to share common
79# logic with code in gtest_break_on_failure_unittest.py.
80class ThrowOnFailureTest(gtest_test_utils.TestCase):
81 """Tests the throw-on-failure mode."""
82
83 def RunAndVerify(self, env_var_value, flag_value, should_fail):
84 """Runs gtest_throw_on_failure_test_ and verifies that it does
85 (or does not) exit with a non-zero code.
86
87 Args:
88 env_var_value: value of the GTEST_BREAK_ON_FAILURE environment
89 variable; None if the variable should be unset.
90 flag_value: value of the --gtest_break_on_failure flag;
91 None if the flag should not be present.
92 should_fail: True iff the program is expected to fail.
93 """
94
95 SetEnvVar(THROW_ON_FAILURE, env_var_value)
96
97 if env_var_value is None:
98 env_var_value_msg = ' is not set'
99 else:
100 env_var_value_msg = '=' + env_var_value
101
102 if flag_value is None:
103 flag = ''
104 elif flag_value == '0':
105 flag = '--%s=0' % THROW_ON_FAILURE
106 else:
107 flag = '--%s' % THROW_ON_FAILURE
108
109 command = [EXE_PATH]
110 if flag:
111 command.append(flag)
112
113 if should_fail:
114 should_or_not = 'should'
115 else:
116 should_or_not = 'should not'
117
118 failed = not Run(command)
119
120 SetEnvVar(THROW_ON_FAILURE, None)
121
122 msg = ('when %s%s, an assertion failure in "%s" %s cause a non-zero '
123 'exit code.' %
124 (THROW_ON_FAILURE, env_var_value_msg, ' '.join(command),
125 should_or_not))
126 self.assert_(failed == should_fail, msg)
127
128 def testDefaultBehavior(self):
129 """Tests the behavior of the default mode."""
130
131 self.RunAndVerify(env_var_value=None, flag_value=None, should_fail=False)
132
133 def testThrowOnFailureEnvVar(self):
134 """Tests using the GTEST_THROW_ON_FAILURE environment variable."""
135
136 self.RunAndVerify(env_var_value='0',
137 flag_value=None,
138 should_fail=False)
139 self.RunAndVerify(env_var_value='1',
140 flag_value=None,
141 should_fail=True)
142
143 def testThrowOnFailureFlag(self):
144 """Tests using the --gtest_throw_on_failure flag."""
145
146 self.RunAndVerify(env_var_value=None,
147 flag_value='0',
148 should_fail=False)
149 self.RunAndVerify(env_var_value=None,
150 flag_value='1',
151 should_fail=True)
152
153 def testThrowOnFailureFlagOverridesEnvVar(self):
154 """Tests that --gtest_throw_on_failure overrides GTEST_THROW_ON_FAILURE."""
155
156 self.RunAndVerify(env_var_value='0',
157 flag_value='0',
158 should_fail=False)
159 self.RunAndVerify(env_var_value='0',
160 flag_value='1',
161 should_fail=True)
162 self.RunAndVerify(env_var_value='1',
163 flag_value='0',
164 should_fail=False)
165 self.RunAndVerify(env_var_value='1',
166 flag_value='1',
167 should_fail=True)
168
169
170if __name__ == '__main__':
171 gtest_test_utils.Main()
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