C# – 在使用 Moq 第二次调用时将方法模拟为 return 不同的值

Question

我正在使用 Moq 通过异步方法模拟存储库。此方法必须调用 2 次。在第一次调用此方法时，我需要获取空值。其次我需要得到一些参数。如果此方法不是异步的，那么我可以使用

 autoMockContext
            .Mock<IPopulationReadRepository>()
            .SetupSequence(method => method.GetCityForNewClients(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()))
            .Returns(null)
            .Returns(new Population { Id = 100, CityLongName = "Kharkiv, Kharkivska, Slobozhanshina" });

所以最后一行出错了。结果一定是这样的：

 autoMockContext
            .Mock<IPopulationReadRepository>()
            .Setup(method => method.GetCityForNewClients(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()))
            .Returns(null);

 autoMockContext
            .Mock<IPopulationReadRepository>()
            .Setup(method => method.GetCityForNewClients(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()))
            .ReturnsAsync(new Entities.Zonning.Population { Id = 100, CityLongName = "Kharkiv, Kharkivska, Slobozhanshina" });

但是我一次调用就需要它？

Answer 1

谢谢，我已经解决了这个问题

      autoMockContext
            .Mock<IPopulationReadRepository>()
            .SetupSequence(method => method.GetCityForNewClients(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>()))
            .Returns(Task.FromResult<Entities.Zonning.Population>(null))
            .Returns(Task.FromResult(new Entities.Zonning.Population { Id = 100, CityLongName = "Kharkiv, Kharkivska, Slobozhanshina" }));

C# – 在使用 Moq 第二次调用时将方法模拟为 return 不同的值

C# – Mocking a method to return a different value when called a second time using Moq

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