是否有可能（与MOQ）存根和λ参数的方法调用？ [英] Is it possible (with Moq) to stub method calls with Lambda parameters?

问题描述

如果我这样做：

var repository = new Mock<IRepository<Banner>>();
repository.Setup(x => x.Where(banner => banner.Is.AvailableForFrontend())).Returns(list);

去哪儿是我仓库里的方法，需要一个 Func键＆LT; T，ISpecification＆LT; T＆GT; 。 AvailableForFrontend返回ISpecification的实施，单是仓库的泛型类型的IEnumberable。

"Where" is a method on my repository that takes a Func<T, ISpecification<T>. AvailableForFrontend returns an implementation of ISpecification, and list is an IEnumberable of the generic type of the repository.

它编译罚款，但我得到以下错误，当我运行我的测试。

It compiles fine, but i get the following error when I run my tests.

---- System.NotSupportedException : Expression banner => Convert((banner.Is.AvailableForFrontend() & banner.Is.SmallMediaBanner())) is not supported.

如果我用我的其他的凡直接接受一个I​​Specification信息库，世界上没有问题，过载。

If i use my other overload of Where on the repository that takes a ISpecification directly, theres no problem.

所以，我的新手模拟/最小起订量的问题是：我可以存根方法调用了lamdba作为参数？或者我应该去了解这个以另一种方式？

So my newbie mock / Moq question is: Can I stub a method call with a lamdba as parameter? Or should I go about this in another way?

推荐答案

你有没有尝试过的语法如下：

have you tried the following syntax:

repository.Setup(x => x.Where(It.IsAny<Func<T, ISpecification<T>>()).Returns(list);

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