ceph/src/rapidjson/thirdparty/gtest/googletest/test/gtest_env_var_test.py

   1 #!/usr/bin/env python
   2 #
   3 # Copyright 2008, Google Inc.
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  31
  32 """Verifies that Google Test correctly parses environment variables."""
  33
  34 __author__ = 'wan@google.com (Zhanyong Wan)'
  35
  36 import os
  37 import gtest_test_utils
  38
  39
  40 IS_WINDOWS = os.name == 'nt'
  41 IS_LINUX = os.name == 'posix' and os.uname()[0] == 'Linux'
  42
  43 COMMAND = gtest_test_utils.GetTestExecutablePath('gtest_env_var_test_')
  44
  45 environ = os.environ.copy()
  46
  47
  48 def AssertEq(expected, actual):
  49   if expected != actual:
  50     print('Expected: %s' % (expected,))
  51     print('  Actual: %s' % (actual,))
  52     raise AssertionError
  53
  54
  55 def SetEnvVar(env_var, value):
  56   """Sets the env variable to 'value'; unsets it when 'value' is None."""
  57
  58   if value is not None:
  59     environ[env_var] = value
  60   elif env_var in environ:
  61     del environ[env_var]
  62
  63
  64 def GetFlag(flag):
  65   """Runs gtest_env_var_test_ and returns its output."""
  66
  67   args = [COMMAND]
  68   if flag is not None:
  69     args += [flag]
  70   return gtest_test_utils.Subprocess(args, env=environ).output
  71
  72
  73 def TestFlag(flag, test_val, default_val):
  74   """Verifies that the given flag is affected by the corresponding env var."""
  75
  76   env_var = 'GTEST_' + flag.upper()
  77   SetEnvVar(env_var, test_val)
  78   AssertEq(test_val, GetFlag(flag))
  79   SetEnvVar(env_var, None)
  80   AssertEq(default_val, GetFlag(flag))
  81
  82
  83 class GTestEnvVarTest(gtest_test_utils.TestCase):
  84   def testEnvVarAffectsFlag(self):
  85     """Tests that environment variable should affect the corresponding flag."""
  86
  87     TestFlag('break_on_failure', '1', '0')
  88     TestFlag('color', 'yes', 'auto')
  89     TestFlag('filter', 'FooTest.Bar', '*')
  90     SetEnvVar('XML_OUTPUT_FILE', None) # For 'output' test
  91     TestFlag('output', 'xml:tmp/foo.xml', '')
  92     TestFlag('print_time', '0', '1')
  93     TestFlag('repeat', '999', '1')
  94     TestFlag('throw_on_failure', '1', '0')
  95     TestFlag('death_test_style', 'threadsafe', 'fast')
  96     TestFlag('catch_exceptions', '0', '1')
  97
  98     if IS_LINUX:
  99       TestFlag('death_test_use_fork', '1', '0')
 100       TestFlag('stack_trace_depth', '0', '100')
 101
 102   def testXmlOutputFile(self):
 103     """Tests that $XML_OUTPUT_FILE affects the output flag."""
 104
 105     SetEnvVar('GTEST_OUTPUT', None)
 106     SetEnvVar('XML_OUTPUT_FILE', 'tmp/bar.xml')
 107     AssertEq('xml:tmp/bar.xml', GetFlag('output'))
 108
 109   def testXmlOutputFileOverride(self):
 110     """Tests that $XML_OUTPUT_FILE is overridden by $GTEST_OUTPUT"""
 111
 112     SetEnvVar('GTEST_OUTPUT', 'xml:tmp/foo.xml')
 113     SetEnvVar('XML_OUTPUT_FILE', 'tmp/bar.xml')
 114     AssertEq('xml:tmp/foo.xml', GetFlag('output'))
 115
 116 if __name__ == '__main__':
 117   gtest_test_utils.Main()