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Diffstat (limited to 'numpy/lib/tests/test_recfunctions.py')
| -rw-r--r-- | numpy/lib/tests/test_recfunctions.py | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/numpy/lib/tests/test_recfunctions.py b/numpy/lib/tests/test_recfunctions.py index e9cfa4993..a5d15cb24 100644 --- a/numpy/lib/tests/test_recfunctions.py +++ b/numpy/lib/tests/test_recfunctions.py @@ -656,6 +656,19 @@ class TestJoinBy(TestCase): b = np.ones(3, dtype=[('c', 'u1'), ('b', 'f4'), ('a', 'i4')]) assert_raises(ValueError, join_by, ['a', 'b', 'b'], a, b) + def test_same_name_different_dtypes(self): + # gh-9338 + a_dtype = np.dtype([('key', 'S10'), ('value', '<f4')]) + b_dtype = np.dtype([('key', 'S10'), ('value', '<f8')]) + expected_dtype = np.dtype([ + ('key', '|S10'), ('value1', '<f4'), ('value2', '<f8')]) + + a = np.array([('Sarah', 8.0), ('John', 6.0)], dtype=a_dtype) + b = np.array([('Sarah', 10.0), ('John', 7.0)], dtype=b_dtype) + res = join_by('key', a, b) + + assert_equal(res.dtype, expected_dtype) + class TestJoinBy2(TestCase): @classmethod |