michael@0: #!/usr/bin/env python
michael@0: #
michael@0: # Copyright 2008, Google Inc.
michael@0: # All rights reserved.
michael@0: #
michael@0: # Redistribution and use in source and binary forms, with or without
michael@0: # modification, are permitted provided that the following conditions are
michael@0: # met:
michael@0: #
michael@0: #     * Redistributions of source code must retain the above copyright
michael@0: # notice, this list of conditions and the following disclaimer.
michael@0: #     * Redistributions in binary form must reproduce the above
michael@0: # copyright notice, this list of conditions and the following disclaimer
michael@0: # in the documentation and/or other materials provided with the
michael@0: # distribution.
michael@0: #     * Neither the name of Google Inc. nor the names of its
michael@0: # contributors may be used to endorse or promote products derived from
michael@0: # this software without specific prior written permission.
michael@0: #
michael@0: # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
michael@0: # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
michael@0: # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
michael@0: # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
michael@0: # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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michael@0: # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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michael@0: # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
michael@0: # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
michael@0: # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
michael@0: 
michael@0: """Verifies that Google Test correctly parses environment variables."""
michael@0: 
michael@0: __author__ = 'wan@google.com (Zhanyong Wan)'
michael@0: 
michael@0: import os
michael@0: import gtest_test_utils
michael@0: 
michael@0: 
michael@0: IS_WINDOWS = os.name == 'nt'
michael@0: IS_LINUX = os.name == 'posix' and os.uname()[0] == 'Linux'
michael@0: 
michael@0: COMMAND = gtest_test_utils.GetTestExecutablePath('gtest_env_var_test_')
michael@0: 
michael@0: environ = os.environ.copy()
michael@0: 
michael@0: 
michael@0: def AssertEq(expected, actual):
michael@0:   if expected != actual:
michael@0:     print 'Expected: %s' % (expected,)
michael@0:     print '  Actual: %s' % (actual,)
michael@0:     raise AssertionError
michael@0: 
michael@0: 
michael@0: def SetEnvVar(env_var, value):
michael@0:   """Sets the env variable to 'value'; unsets it when 'value' is None."""
michael@0: 
michael@0:   if value is not None:
michael@0:     environ[env_var] = value
michael@0:   elif env_var in environ:
michael@0:     del environ[env_var]
michael@0: 
michael@0: 
michael@0: def GetFlag(flag):
michael@0:   """Runs gtest_env_var_test_ and returns its output."""
michael@0: 
michael@0:   args = [COMMAND]
michael@0:   if flag is not None:
michael@0:     args += [flag]
michael@0:   return gtest_test_utils.Subprocess(args, env=environ,
michael@0:                                      capture_stderr=False).output
michael@0: 
michael@0: 
michael@0: def TestFlag(flag, test_val, default_val):
michael@0:   """Verifies that the given flag is affected by the corresponding env var."""
michael@0: 
michael@0:   env_var = 'GTEST_' + flag.upper()
michael@0:   SetEnvVar(env_var, test_val)
michael@0:   AssertEq(test_val, GetFlag(flag))
michael@0:   SetEnvVar(env_var, None)
michael@0:   AssertEq(default_val, GetFlag(flag))
michael@0: 
michael@0: 
michael@0: class GTestEnvVarTest(gtest_test_utils.TestCase):
michael@0:   def testEnvVarAffectsFlag(self):
michael@0:     """Tests that environment variable should affect the corresponding flag."""
michael@0: 
michael@0:     TestFlag('break_on_failure', '1', '0')
michael@0:     TestFlag('color', 'yes', 'auto')
michael@0:     TestFlag('filter', 'FooTest.Bar', '*')
michael@0:     TestFlag('output', 'xml:tmp/foo.xml', '')
michael@0:     TestFlag('print_time', '0', '1')
michael@0:     TestFlag('repeat', '999', '1')
michael@0:     TestFlag('throw_on_failure', '1', '0')
michael@0:     TestFlag('death_test_style', 'threadsafe', 'fast')
michael@0:     TestFlag('catch_exceptions', '0', '1')
michael@0: 
michael@0:     if IS_LINUX:
michael@0:       TestFlag('death_test_use_fork', '1', '0')
michael@0:       TestFlag('stack_trace_depth', '0', '100')
michael@0: 
michael@0: 
michael@0: if __name__ == '__main__':
michael@0:   gtest_test_utils.Main()