diff options
Diffstat (limited to 'Lib/test/test_subprocess.py')
| -rw-r--r-- | Lib/test/test_subprocess.py | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/Lib/test/test_subprocess.py b/Lib/test/test_subprocess.py index 8603b9888bb..99b5947e54b 100644 --- a/Lib/test/test_subprocess.py +++ b/Lib/test/test_subprocess.py @@ -1543,6 +1543,22 @@ class ProcessTestCase(BaseTestCase): self.assertIsInstance(subprocess.Popen[bytes], types.GenericAlias) self.assertIsInstance(subprocess.CompletedProcess[str], types.GenericAlias) + @unittest.skipIf(not sysconfig.get_config_var("HAVE_VFORK"), + "vfork() not enabled by configure.") + @mock.patch("subprocess._fork_exec") + def test__use_vfork(self, mock_fork_exec): + self.assertTrue(subprocess._USE_VFORK) # The default value regardless. + mock_fork_exec.side_effect = RuntimeError("just testing args") + with self.assertRaises(RuntimeError): + subprocess.run([sys.executable, "-c", "pass"]) + mock_fork_exec.assert_called_once() + self.assertTrue(mock_fork_exec.call_args.args[-1]) + with mock.patch.object(subprocess, '_USE_VFORK', False): + with self.assertRaises(RuntimeError): + subprocess.run([sys.executable, "-c", "pass"]) + self.assertFalse(mock_fork_exec.call_args_list[-1].args[-1]) + + class RunFuncTestCase(BaseTestCase): def run_python(self, code, **kwargs): """Run Python code in a subprocess using subprocess.run""" @@ -3107,7 +3123,7 @@ class POSIXProcessTestCase(BaseTestCase): 1, 2, 3, 4, True, True, False, [], 0, -1, - func) + func, False) # Attempt to prevent # "TypeError: fork_exec() takes exactly N arguments (M given)" # from passing the test. More refactoring to have us start @@ -3156,7 +3172,7 @@ class POSIXProcessTestCase(BaseTestCase): 1, 2, 3, 4, True, True, None, None, None, -1, - None) + None, "no vfork") self.assertIn('fds_to_keep', str(c.exception)) finally: if not gc_enabled: |