def test_rational():
    assert limit(1/y - (1/(y + x) + x/(y + x)/y)/z, x, oo) == (z - 1)/(y*z)
    assert limit(1/y - ((y + x)/1 + x/(y + x)/y)/z, x, -oo) == (z - 1)/(y*z)
dataset/ETHPy150Open sympy/sympy/sympy/series/tests/test_limits.py/test_rational/swapped operands of `/`