def test_different_dimensions(self):
x = rd.random((self.n, 3))
y = rd.random((self.n + 2, 3))
with self.assertRaises(exception.MathError):
math.rmsd(x, y)
def test_same_matrix(self):
x = rd.random((self.n, 3))
self.assertLess(math.rmsd(x, x), self.eps)
