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Diffstat (limited to 'numpy')
| -rw-r--r-- | numpy/core/tests/test_numeric.py | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/numpy/core/tests/test_numeric.py b/numpy/core/tests/test_numeric.py index ae5ee4c88..89a82d3b6 100644 --- a/numpy/core/tests/test_numeric.py +++ b/numpy/core/tests/test_numeric.py @@ -1025,6 +1025,24 @@ class TestTypes: assert res_bs == res assert res_bs.metadata == res.metadata + @pytest.mark.parametrize(["dtype1", "dtype2"], + [[np.dtype("V6"), np.dtype("V10")], + [np.dtype([("name1", "i8")]), np.dtype([("name2", "i8")])], + [np.dtype("i8,i8"), np.dtype("i4,i4")], + ]) + def test_invalid_void_promotion(self, dtype1, dtype2): + # Mainly test structured void promotion, which currently allows + # byte-swapping, but nothing else: + with pytest.raises(TypeError): + np.promote_types(dtype1, dtype2) + + @pytest.mark.parametrize(["dtype1", "dtype2"], + [[np.dtype("V10"), np.dtype("V10")], + [np.dtype([("name1", "<i8")]), np.dtype([("name1", ">i8")])], + [np.dtype("i8,i8"), np.dtype("i8,>i8")], + ]) + def test_valid_void_promotion(self, dtype1, dtype2): + assert np.promote_types(dtype1, dtype2) is dtype1 def test_can_cast(self): assert_(np.can_cast(np.int32, np.int64)) |