TST: stats.kstest: add regression test for gh-20386

scipy · Apr 14, 2024 · 5a5b27f · 5a5b27f
1 parent 0be96de
commit 5a5b27f
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/scipy/stats/tests/test_stats.py b/scipy/stats/tests/test_stats.py
@@ -4231,6 +4231,14 @@ def test_agree_with_ks_1samp(self):
         self._test_kstest_and_ks1samp(x, 'greater', mode='exact')
         self._test_kstest_and_ks1samp(x, 'less', mode='exact')
 
+    def test_pm_inf_gh20386(self):
+        vals = [-np.inf, 0, 1, np.inf]
+        res = stats.kstest(vals, stats.cauchy.cdf)
+        ref = stats.kstest(vals, stats.cauchy.cdf, _no_deco=True)
+        assert_equal(res, ref)
+        assert not np.isnan(res.statistic)
+        assert not np.isnan(res.pvalue)
+
     # missing: no test that uses *args