#!/usr/bin/env python
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"""Verifies that Google Test correctly parses environment variables."""
import os
import gtest_test_utils
IS_WINDOWS = os.name == 'nt'
IS_LINUX = os.name == 'posix' and os.uname()[0] == 'Linux'
COMMAND = gtest_test_utils.GetTestExecutablePath('googletest-env-var-test_')
environ = os.environ.copy()
def AssertEq(expected, actual):
if expected != actual:
print 'Expected: %s' % (expected,)
print ' Actual: %s' % (actual,)
raise AssertionError
def SetEnvVar(env_var, value):
"""Sets the env variable to 'value'; unsets it when 'value' is None."""
if value is not None:
environ[env_var] = value
elif env_var in environ:
del environ[env_var]
def GetFlag(flag):
"""Runs googletest-env-var-test_ and returns its output."""
args = [COMMAND]
if flag is not None:
args += [flag]
return gtest_test_utils.Subprocess(args, env=environ).output
def TestFlag(flag, test_val, default_val):
"""Verifies that the given flag is affected by the corresponding env var."""
env_var = 'GTEST_' + flag.upper()
SetEnvVar(env_var, test_val)
AssertEq(test_val, GetFlag(flag))
SetEnvVar(env_var, None)
AssertEq(default_val, GetFlag(flag))
class GTestEnvVarTest(gtest_test_utils.TestCase):
def testEnvVarAffectsFlag(self):
"""Tests that environment variable should affect the corresponding flag."""
TestFlag('break_on_failure', '1', '0')
TestFlag('color', 'yes', 'auto')
TestFlag('filter', 'FooTest.Bar', '*')
SetEnvVar('XML_OUTPUT_FILE', None) # For 'output' test
TestFlag('output', 'xml:tmp/foo.xml', '')
TestFlag('print_time', '0', '1')
TestFlag('repeat', '999', '1')
TestFlag('throw_on_failure', '1', '0')
TestFlag('death_test_style', 'threadsafe', 'fast')
TestFlag('catch_exceptions', '0', '1')
if IS_LINUX:
TestFlag('death_test_use_fork', '1', '0')
TestFlag('stack_trace_depth', '0', '100')
def testXmlOutputFile(self):
"""Tests that $XML_OUTPUT_FILE affects the output flag."""
SetEnvVar('GTEST_OUTPUT', None)
SetEnvVar('XML_OUTPUT_FILE', 'tmp/bar.xml')
AssertEq('xml:tmp/bar.xml', GetFlag('output'))
def testXmlOutputFileOverride(self):
"""Tests that $XML_OUTPUT_FILE is overridden by $GTEST_OUTPUT."""
SetEnvVar('GTEST_OUTPUT', 'xml:tmp/foo.xml')
SetEnvVar('XML_OUTPUT_FILE', 'tmp/bar.xml')
AssertEq('xml:tmp/foo.xml', GetFlag('output'))
if __name__ == '__main__':
gtest_test_utils.Main()