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Add third-party test for cumsum with axis=None and out #3088

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Add third-party test for cumsum with axis=None and out #3088

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17 changes: 17 additions & 0 deletions dpnp/tests/third_party/cupy/math_tests/test_sumprod.py
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Original file line number Diff line number Diff line change
Expand Up @@ -784,6 +784,23 @@ def test_cumsum_axis(self, xp, dtype, axis):
a = testing.shaped_arange(tuple(range(4, 4 + n)), xp, dtype)
return self._cumsum(xp, a, axis=axis)

@testing.for_all_dtypes()
@testing.numpy_cupy_allclose(contiguous_check=False)
@pytest.mark.parametrize("order", ["C", "F"])
def test_cumsum_no_axis(self, xp, dtype, order):
a = testing.shaped_arange((4, 3), xp, dtype)
out = xp.empty((12,), dtype=dtype)

if order in ("c", "C"):
out = xp.ascontiguousarray(out)
elif order in ("f", "F"):
out = xp.asfortranarray(out)

b = a.copy()
xp.cumsum(a, out=out, dtype=dtype)
testing.assert_array_equal(a, b) # Check if input array is overwritten
return out

@pytest.mark.parametrize("axis", axes)
@testing.for_all_dtypes()
@testing.numpy_cupy_allclose()
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