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TST: avoid mutating ndarray.shape attributes #597

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TST: avoid mutating ndarray.shape attributes #597

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15 changes: 5 additions & 10 deletions unyt/tests/test_array_functions.py
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Original file line number Diff line number Diff line change
Expand Up @@ -367,10 +367,8 @@ def test_dot_vectors():
],
)
def test_dot_matrices(out):
a = np.arange(9) * cm
a.shape = (3, 3)
b = np.arange(9) * s
b.shape = (3, 3)
a = np.reshape(np.arange(9), (3, 3)) * cm
b = np.reshape(np.arange(9), (3, 3)) * s

res = np.dot(a, b, out=out)

Expand Down Expand Up @@ -422,10 +420,8 @@ def test_dot_mixed_ndarray_unyt_array():


def test_invalid_dot_matrices():
a = np.arange(9) * cm
a.shape = (3, 3)
b = np.arange(9) * s
b.shape = (3, 3)
a = np.reshape(np.arange(9), (3, 3)) * cm
b = np.reshape(np.arange(9), (3, 3)) * s

out = np.empty((3, 3), dtype=np.int_, order="C") * s**2
res = np.dot(a, b, out=out)
Expand Down Expand Up @@ -473,8 +469,7 @@ def test_linalg_inv():


def test_linalg_tensorinv():
a = np.eye(4 * 6) * cm
a.shape = (4, 6, 8, 3)
a = np.reshape(np.eye(4 * 6), (4, 6, 8, 3)) * cm
ia = np.linalg.tensorinv(a)
assert 1 * ia.units == 1 / cm

Expand Down