def test_new_img_like_side_effect():
img1 = Nifti1Image(np.ones((2, 2, 2, 2)), affine=np.eye(4))
hash1 = joblib.hash(img1)
new_img_like(img1,
np.ones((2, 2, 2, 2)),
img1.affine.copy(),
copy_header=True)
hash2 = joblib.hash(img1)
assert hash1 == hash2
def test_copy_img_side_effect():
img1 = Nifti1Image(np.ones((2, 2, 2, 2)), affine=np.eye(4))
hash1 = joblib.hash(img1)
niimg.copy_img(img1)
hash2 = joblib.hash(img1)
assert hash1 == hash2