cpython/Lib/test/test_script_helper.py
Gregory P. Smith b5684c48e1 Add the command line to the AssertionError raised by test.script_helper's
Python subprocess failure assertion error messages for easier debugging.

Adds a unittest for test.script_helper to confirm that this code works as
it is otherwise uncovered by an already passing test suite that uses it. :)
2015-01-20 17:19:47 -08:00

36 lines
1.5 KiB
Python
Executable File

"""Unittests for test.script_helper. Who tests the test helper?"""
from test import script_helper
import unittest
class TestScriptHelper(unittest.TestCase):
def test_assert_python_expect_success(self):
t = script_helper._assert_python(True, '-c', 'import sys; sys.exit(0)')
self.assertEqual(0, t[0], 'return code was not 0')
def test_assert_python_expect_failure(self):
# I didn't import the sys module so this child will fail.
rc, out, err = script_helper._assert_python(False, '-c', 'sys.exit(0)')
self.assertNotEqual(0, rc, 'return code should not be 0')
def test_assert_python_raises_expect_success(self):
# I didn't import the sys module so this child will fail.
with self.assertRaises(AssertionError) as error_context:
script_helper._assert_python(True, '-c', 'sys.exit(0)')
error_msg = str(error_context.exception)
self.assertIn('command line was:', error_msg)
self.assertIn('sys.exit(0)', error_msg, msg='unexpected command line')
def test_assert_python_raises_expect_failure(self):
with self.assertRaises(AssertionError) as error_context:
script_helper._assert_python(False, '-c', 'import sys; sys.exit(0)')
error_msg = str(error_context.exception)
self.assertIn('Process return code is 0,', error_msg)
self.assertIn('import sys; sys.exit(0)', error_msg,
msg='unexpected command line.')
if __name__ == '__main__':
unittest.main()