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Diffstat (limited to 'numpy/lib/tests')
| -rw-r--r-- | numpy/lib/tests/test_arraysetops.py | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/numpy/lib/tests/test_arraysetops.py b/numpy/lib/tests/test_arraysetops.py index d62da9efb..13385cd24 100644 --- a/numpy/lib/tests/test_arraysetops.py +++ b/numpy/lib/tests/test_arraysetops.py @@ -610,6 +610,17 @@ class TestUnique: assert_equal(np.unique(a, return_inverse=True), (ua, ua_inv)) assert_equal(np.unique(a, return_counts=True), (ua, ua_cnt)) + # test for gh-19300 + all_nans = [np.nan] * 4 + ua = [np.nan] + ua_idx = [0] + ua_inv = [0, 0, 0, 0] + ua_cnt = [4] + assert_equal(np.unique(all_nans), ua) + assert_equal(np.unique(all_nans, return_index=True), (ua, ua_idx)) + assert_equal(np.unique(all_nans, return_inverse=True), (ua, ua_inv)) + assert_equal(np.unique(all_nans, return_counts=True), (ua, ua_cnt)) + def test_unique_axis_errors(self): assert_raises(TypeError, self._run_axis_tests, object) assert_raises(TypeError, self._run_axis_tests, |