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| author | Tian Gao <gaogaotiantian@hotmail.com> | 2023-04-28 20:25:48 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-04-28 20:25:48 (GMT) |
| commit | 79b9db9295a5a1607a0b4b10a8b4b72567eaf1ef (patch) | |
| tree | 36f0645d165e50acfca05e3f17fb3d175e1c6334 | |
| parent | 689723a4abdc1e61a9f71db8ff40886ae1b1704d (diff) | |
| download | cpython-79b9db9295a5a1607a0b4b10a8b4b72567eaf1ef.zip cpython-79b9db9295a5a1607a0b4b10a8b4b72567eaf1ef.tar.gz cpython-79b9db9295a5a1607a0b4b10a8b4b72567eaf1ef.tar.bz2 | |
GH-103971: Forward-port test from GH-103980 (GH-103984)
| -rw-r--r-- | Lib/test/test_patma.py | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Lib/test/test_patma.py b/Lib/test/test_patma.py index 0ed5407..3dbd19d 100644 --- a/Lib/test/test_patma.py +++ b/Lib/test/test_patma.py @@ -3165,6 +3165,19 @@ class TestTracing(unittest.TestCase): self.assertListEqual(self._trace(f, "go x"), [1, 2, 3]) self.assertListEqual(self._trace(f, "spam"), [1, 2, 3]) + def test_unreachable_code(self): + def f(command): # 0 + match command: # 1 + case 1: # 2 + if False: # 3 + return 1 # 4 + case _: # 5 + if False: # 6 + return 0 # 7 + + self.assertListEqual(self._trace(f, 1), [1, 2, 3]) + self.assertListEqual(self._trace(f, 0), [1, 2, 5, 6]) + def test_parser_deeply_nested_patterns(self): # Deeply nested patterns can cause exponential backtracking when parsing. # See gh-93671 for more information. |