ceph/src/googletest/googletest/test/googletest-env-var-test.py

   1 #!/usr/bin/env python
   2 #
   3 # Copyright 2008, 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
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   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.
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  17 # contributors may be used to endorse or promote products derived from
  18 # this software without specific prior written permission.
  19 #
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  21 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  30 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31
  32 """Verifies that Google Test correctly parses environment variables."""
  33
  34 import os
  35 import gtest_test_utils
  36
  37
  38 IS_WINDOWS = os.name == 'nt'
  39 IS_LINUX = os.name == 'posix' and os.uname()[0] == 'Linux'
  40
  41 COMMAND = gtest_test_utils.GetTestExecutablePath('googletest-env-var-test_')
  42
  43 environ = os.environ.copy()
  44
  45
  46 def AssertEq(expected, actual):
  47   if expected != actual:
  48     print('Expected: %s' % (expected,))
  49     print('  Actual: %s' % (actual,))
  50     raise AssertionError
  51
  52
  53 def SetEnvVar(env_var, value):
  54   """Sets the env variable to 'value'; unsets it when 'value' is None."""
  55
  56   if value is not None:
  57     environ[env_var] = value
  58   elif env_var in environ:
  59     del environ[env_var]
  60
  61
  62 def GetFlag(flag):
  63   """Runs googletest-env-var-test_ and returns its output."""
  64
  65   args = [COMMAND]
  66   if flag is not None:
  67     args += [flag]
  68   return gtest_test_utils.Subprocess(args, env=environ).output
  69
  70
  71 def TestFlag(flag, test_val, default_val):
  72   """Verifies that the given flag is affected by the corresponding env var."""
  73
  74   env_var = 'GTEST_' + flag.upper()
  75   SetEnvVar(env_var, test_val)
  76   AssertEq(test_val, GetFlag(flag))
  77   SetEnvVar(env_var, None)
  78   AssertEq(default_val, GetFlag(flag))
  79
  80
  81 class GTestEnvVarTest(gtest_test_utils.TestCase):
  82
  83   def testEnvVarAffectsFlag(self):
  84     """Tests that environment variable should affect the corresponding flag."""
  85
  86     TestFlag('break_on_failure', '1', '0')
  87     TestFlag('color', 'yes', 'auto')
  88     SetEnvVar('TESTBRIDGE_TEST_RUNNER_FAIL_FAST', None)  # For 'fail_fast' test
  89     TestFlag('fail_fast', '1', '0')
  90     TestFlag('filter', 'FooTest.Bar', '*')
  91     SetEnvVar('XML_OUTPUT_FILE', None)  # For 'output' test
  92     TestFlag('output', 'xml:tmp/foo.xml', '')
  93     TestFlag('brief', '1', '0')
  94     TestFlag('print_time', '0', '1')
  95     TestFlag('repeat', '999', '1')
  96     TestFlag('throw_on_failure', '1', '0')
  97     TestFlag('death_test_style', 'threadsafe', 'fast')
  98     TestFlag('catch_exceptions', '0', '1')
  99
 100     if IS_LINUX:
 101       TestFlag('death_test_use_fork', '1', '0')
 102       TestFlag('stack_trace_depth', '0', '100')
 103
 104
 105   def testXmlOutputFile(self):
 106     """Tests that $XML_OUTPUT_FILE affects the output flag."""
 107
 108     SetEnvVar('GTEST_OUTPUT', None)
 109     SetEnvVar('XML_OUTPUT_FILE', 'tmp/bar.xml')
 110     AssertEq('xml:tmp/bar.xml', GetFlag('output'))
 111
 112   def testXmlOutputFileOverride(self):
 113     """Tests that $XML_OUTPUT_FILE is overridden by $GTEST_OUTPUT."""
 114
 115     SetEnvVar('GTEST_OUTPUT', 'xml:tmp/foo.xml')
 116     SetEnvVar('XML_OUTPUT_FILE', 'tmp/bar.xml')
 117     AssertEq('xml:tmp/foo.xml', GetFlag('output'))
 118
 119 if __name__ == '__main__':
 120   gtest_test_utils.Main()