diff options
| -rw-r--r-- | numpy/f2py/tests/test_crackfortran.py | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/numpy/f2py/tests/test_crackfortran.py b/numpy/f2py/tests/test_crackfortran.py index 73ac4e276..fc3ab561e 100644 --- a/numpy/f2py/tests/test_crackfortran.py +++ b/numpy/f2py/tests/test_crackfortran.py @@ -1,5 +1,6 @@ import importlib import codecs +import time import unicodedata import pytest import numpy as np @@ -276,3 +277,19 @@ class TestUnicodeComment(util.F2PyTest): ) def test_encoding_comment(self): self.module.foo(3) + +class TestNameArgsPatternBacktracking: + def test_nameargspattern_backtracking(): + last_time = 0. + trials_per_count = 32 + start_reps, end_reps = 10, 16 + for ii in range(start_reps, end_reps): + atbindat = '@)@bind@(@' * ii + total_time = 0 + for _ in range(trials_per_count): + t0 = time.perf_counter() + crackfortran.nameargspattern.search(atbindat) + total_time += (time.perf_counter() - t0) + if ii > start_reps: + assert total_time < 1.9 * last_time, f'Going from {ii - 1} to {ii} approximately doubled time' + last_time = total_time
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