def test_cross():
a = Point(1,2,3)
b = Point(1,2,3)
c = a.cross(b)
np.testing.assert_almost_equal(c.data[0,:], np.cross(a.data[0,:], b.data[0,:]))
assert a.cross(b) == cross(a, b)
def test_cross2():
a = Point(np.random.random((10, 3)))
b = Point(np.random.random((10, 3)))
c = a.cross(b)
c_check = np.array([np.cross(_a.data[0], _b.data[0]) for _a, _b in zip(a,b)])
np.testing.assert_array_almost_equal(c.data, c_check)
