from sympy.liealgebras.cartan_matrix import CartanMatrix from sympy.matrices import Matrix def test_CartanMatrix(): c = CartanMatrix("A3") m = Matrix(3, 3, [2, -1, 0, -1, 2, -1, 0, -1, 2]) assert c == m a = CartanMatrix(["G",2]) mt = Matrix(2, 2, [2, -1, -3, 2]) assert a == mt