public async Task GetCityTest() { await Assert.ThrowsAsync <ArgumentException>(() => JdVopApi.GetCityAsync(null, 0)); var res = await ApiInstance.GetCityAsync(TestHelper.JDArress.ProvinceId); Assert.True(res.Success, res.ResultMessage); var city = res.Result; Assert.NotNull(city); Assert.NotEmpty(city); Assert.Contains(TestHelper.JDArress.City, city.Keys); }