diff options
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/test/test_cmd_line.py | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/Lib/test/test_cmd_line.py b/Lib/test/test_cmd_line.py index 6684e51..2551ab5 100644 --- a/Lib/test/test_cmd_line.py +++ b/Lib/test/test_cmd_line.py @@ -62,6 +62,34 @@ class CmdLineTest(unittest.TestCase): opts = eval(out.splitlines()[0]) self.assertEqual(opts, {'a': True, 'b': 'c,d=e'}) + def test_showrefcount(self): + def run_python(*args): + # this is similar to assert_python_ok but doesn't strip + # the refcount from stderr. It can be replaced once + # assert_python_ok stops doing that. + cmd = [sys.executable] + cmd.extend(args) + PIPE = subprocess.PIPE + p = subprocess.Popen(cmd, stdout=PIPE, stderr=PIPE) + out, err = p.communicate() + p.stdout.close() + p.stderr.close() + rc = p.returncode + self.assertEqual(rc, 0) + return rc, out, err + code = 'import sys; print(sys._xoptions)' + # normally the refcount is hidden + rc, out, err = run_python('-c', code) + self.assertEqual(out.rstrip(), b'{}') + self.assertEqual(err, b'') + # "-X showrefcount" shows the refcount, but only in debug builds + rc, out, err = run_python('-X', 'showrefcount', '-c', code) + self.assertEqual(out.rstrip(), b"{'showrefcount': True}") + if hasattr(sys, 'gettotalrefcount'): # debug build + self.assertRegex(err, br'^\[\d+ refs, \d+ blocks\]') + else: + self.assertEqual(err, b'') + def test_run_module(self): # Test expected operation of the '-m' switch # Switch needs an argument |