test_spin.py 文件源码

def test_jzket():
    j, m = symbols('j m')
    # j not integer or half integer
    raises(ValueError, lambda: JzKet(S(2)/3, -S(1)/3))
    raises(ValueError, lambda: JzKet(S(2)/3, m))
    # j < 0
    raises(ValueError, lambda: JzKet(-1, 1))
    raises(ValueError, lambda: JzKet(-1, m))
    # m not integer or half integer
    raises(ValueError, lambda: JzKet(j, -S(1)/3))
    # abs(m) > j
    raises(ValueError, lambda: JzKet(1, 2))
    raises(ValueError, lambda: JzKet(1, -2))
    # j-m not integer
    raises(ValueError, lambda: JzKet(1, S(1)/2))