| """Unittests for test.support.script_helper. Who tests the test helper?""" |
| |
| import subprocess |
| import sys |
| from test.support import script_helper |
| import unittest |
| from unittest import mock |
| |
| |
| class TestScriptHelper(unittest.TestCase): |
| |
| def test_assert_python_ok(self): |
| t = script_helper.assert_python_ok('-c', 'import sys; sys.exit(0)') |
| self.assertEqual(0, t[0], 'return code was not 0') |
| |
| def test_assert_python_failure(self): |
| # I didn't import the sys module so this child will fail. |
| rc, out, err = script_helper.assert_python_failure('-c', 'sys.exit(0)') |
| self.assertNotEqual(0, rc, 'return code should not be 0') |
| |
| def test_assert_python_ok_raises(self): |
| # I didn't import the sys module so this child will fail. |
| with self.assertRaises(AssertionError) as error_context: |
| script_helper.assert_python_ok('-c', 'sys.exit(0)') |
| error_msg = str(error_context.exception) |
| self.assertIn('command line:', error_msg) |
| self.assertIn('sys.exit(0)', error_msg, msg='unexpected command line') |
| |
| def test_assert_python_failure_raises(self): |
| with self.assertRaises(AssertionError) as error_context: |
| script_helper.assert_python_failure('-c', 'import sys; sys.exit(0)') |
| error_msg = str(error_context.exception) |
| self.assertIn('Process return code is 0\n', error_msg) |
| self.assertIn('import sys; sys.exit(0)', error_msg, |
| msg='unexpected command line.') |
| |
| @mock.patch('subprocess.Popen') |
| def test_assert_python_isolated_when_env_not_required(self, mock_popen): |
| with mock.patch.object(script_helper, |
| 'interpreter_requires_environment', |
| return_value=False) as mock_ire_func: |
| mock_popen.side_effect = RuntimeError('bail out of unittest') |
| try: |
| script_helper._assert_python(True, '-c', 'None') |
| except RuntimeError as err: |
| self.assertEqual('bail out of unittest', err.args[0]) |
| self.assertEqual(1, mock_popen.call_count) |
| self.assertEqual(1, mock_ire_func.call_count) |
| popen_command = mock_popen.call_args[0][0] |
| self.assertEqual(sys.executable, popen_command[0]) |
| self.assertIn('None', popen_command) |
| self.assertIn('-I', popen_command) |
| self.assertNotIn('-E', popen_command) # -I overrides this |
| |
| @mock.patch('subprocess.Popen') |
| def test_assert_python_not_isolated_when_env_is_required(self, mock_popen): |
| """Ensure that -I is not passed when the environment is required.""" |
| with mock.patch.object(script_helper, |
| 'interpreter_requires_environment', |
| return_value=True) as mock_ire_func: |
| mock_popen.side_effect = RuntimeError('bail out of unittest') |
| try: |
| script_helper._assert_python(True, '-c', 'None') |
| except RuntimeError as err: |
| self.assertEqual('bail out of unittest', err.args[0]) |
| popen_command = mock_popen.call_args[0][0] |
| self.assertNotIn('-I', popen_command) |
| self.assertNotIn('-E', popen_command) |
| |
| |
| class TestScriptHelperEnvironment(unittest.TestCase): |
| """Code coverage for interpreter_requires_environment().""" |
| |
| def setUp(self): |
| self.assertTrue( |
| hasattr(script_helper, '__cached_interp_requires_environment')) |
| # Reset the private cached state. |
| script_helper.__dict__['__cached_interp_requires_environment'] = None |
| |
| def tearDown(self): |
| # Reset the private cached state. |
| script_helper.__dict__['__cached_interp_requires_environment'] = None |
| |
| @mock.patch('subprocess.check_call') |
| def test_interpreter_requires_environment_true(self, mock_check_call): |
| mock_check_call.side_effect = subprocess.CalledProcessError('', '') |
| self.assertTrue(script_helper.interpreter_requires_environment()) |
| self.assertTrue(script_helper.interpreter_requires_environment()) |
| self.assertEqual(1, mock_check_call.call_count) |
| |
| @mock.patch('subprocess.check_call') |
| def test_interpreter_requires_environment_false(self, mock_check_call): |
| # The mocked subprocess.check_call fakes a no-error process. |
| script_helper.interpreter_requires_environment() |
| self.assertFalse(script_helper.interpreter_requires_environment()) |
| self.assertEqual(1, mock_check_call.call_count) |
| |
| @mock.patch('subprocess.check_call') |
| def test_interpreter_requires_environment_details(self, mock_check_call): |
| script_helper.interpreter_requires_environment() |
| self.assertFalse(script_helper.interpreter_requires_environment()) |
| self.assertFalse(script_helper.interpreter_requires_environment()) |
| self.assertEqual(1, mock_check_call.call_count) |
| check_call_command = mock_check_call.call_args[0][0] |
| self.assertEqual(sys.executable, check_call_command[0]) |
| self.assertIn('-E', check_call_command) |
| |
| |
| if __name__ == '__main__': |
| unittest.main() |