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Diffstat (limited to 'Lib/test/test_re.py')
| -rw-r--r-- | Lib/test/test_re.py | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/Lib/test/test_re.py b/Lib/test/test_re.py index a4e11c6746..a229e235ca 100644 --- a/Lib/test/test_re.py +++ b/Lib/test/test_re.py @@ -1,5 +1,5 @@ from test.support import verbose, run_unittest, gc_collect, bigmemtest, _2G, \ - cpython_only + cpython_only, captured_stdout import io import re from re import Scanner @@ -1193,6 +1193,18 @@ class ReTests(unittest.TestCase): self.assertEqual(m.group(1), "") self.assertEqual(m.group(2), "y") + def test_debug_flag(self): + with captured_stdout() as out: + re.compile('foo', re.DEBUG) + self.assertEqual(out.getvalue().splitlines(), + ['literal 102 ', 'literal 111 ', 'literal 111 ']) + # Debug output is output again even a second time (bypassing + # the cache -- issue #20426). + with captured_stdout() as out: + re.compile('foo', re.DEBUG) + self.assertEqual(out.getvalue().splitlines(), + ['literal 102 ', 'literal 111 ', 'literal 111 ']) + class PatternReprTests(unittest.TestCase): def check(self, pattern, expected): |