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TST: new test for incorrect series assignment #29378

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Merged
merged 5 commits into from
Nov 7, 2019
Merged

TST: new test for incorrect series assignment #29378

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73a69f8
add incorrect series assignment
ganevgv Nov 3, 2019
52eba9f
add incorrect series assignment
ganevgv Nov 3, 2019
2f0fa1e
passes git diff upstream
ganevgv Nov 3, 2019
76cd061
change test name
ganevgv Nov 6, 2019
497677e
change name test
ganevgv Nov 7, 2019
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16 changes: 16 additions & 0 deletions pandas/tests/series/indexing/test_indexing.py
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Original file line number Diff line number Diff line change
Expand Up @@ -391,6 +391,22 @@ def test_setslice(datetime_series):
assert sl.index.is_unique is True


def test_2d_to_1d_assignment_raises():
x = np.random.randn(2, 2)
y = pd.Series(range(2))

msg = (
r"shape mismatch: value array of shape \(2,2\) could not be"
r" broadcast to indexing result of shape \(2,\)"
)
with pytest.raises(ValueError, match=msg):
y.loc[range(2)] = x

msg = r"could not broadcast input array from shape \(2,2\) into shape \(2\)"
with pytest.raises(ValueError, match=msg):
y.loc[:] = x


# FutureWarning from NumPy about [slice(None, 5).
@pytest.mark.filterwarnings("ignore:Using a non-tuple:FutureWarning")
def test_basic_getitem_setitem_corner(datetime_series):
Expand Down