googletest/test/googletest-global-environment-unittest.py

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"""Unit test for Google Test's global test environment behavior.

A user can specify a global test environment via
testing::AddGlobalTestEnvironment. Failures in the global environment should
result in all unit tests being skipped.

This script tests such functionality by invoking
googletest-global-environment-unittest_ (a program written with Google Test).
"""

import gtest_test_utils


def RunAndReturnOutput():
  """Runs the test program and returns its output."""

  return gtest_test_utils.Subprocess([
      gtest_test_utils.GetTestExecutablePath(
          'googletest-global-environment-unittest_')
  ]).output


class GTestGlobalEnvironmentUnitTest(gtest_test_utils.TestCase):
  """Tests global test environment failures."""

  def testEnvironmentSetUpFails(self):
    """Tests the behavior of not specifying the fail_fast."""

    # Run the test.
    txt = RunAndReturnOutput()

    # We should see the text of the global environment setup error.
    self.assertIn('Canned environment setup error', txt)

    # Our test should have been skipped due to the error, and not treated as a
    # pass.
    self.assertIn('[  SKIPPED ] 1 test', txt)
    self.assertIn('[  PASSED  ] 0 tests', txt)

    # The test case shouldn't have been run.
    self.assertNotIn('Unexpected call', txt)


if __name__ == '__main__':
  gtest_test_utils.Main()