def test_from_vectors(array_point, array_a, array_b, plane_expected):
plane = Plane.from_vectors(array_point, array_a, array_b)
assert plane.is_close(plane_expected)
# Also ensure that the vector is exactly as expected.
assert plane.vector.is_close(plane_expected.vector)
def test_from_vectors_failure(array_point, array_a, array_b):
message_expected = "The vectors must not be parallel."
with pytest.raises(ValueError, match=message_expected):
Plane.from_vectors(array_point, array_a, array_b)
