Moq-存储库中的Linq表达式-在设置中指定表达式 [英] Moq - Linq expression in repository - Specify expression in setup
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问题描述
我的界面上有一个方法如下:
I have a method on my interface that looks like:
T GetSingle(Expression<Func<T, bool>> criteria);
我正在尝试模拟这样的设置(我意识到这是行不通的):
I'm trying to mock the setup something like this (I realise this isn't working):
_mockUserRepository = new Mock<IRepository<User>>();
_mockUserRepository.Setup(c => c.GetSingle(x => x.EmailAddress == "a@b.com"))
.Returns(new User{EmailAddress = "a@b.com"});
我意识到我将错误的参数传递给设置.
阅读此答案后，我可以通过传入Expression使其正常工作，如下所示:
I realise I'm passing in the wrong parameter to the setup.
After reading this answer I can get it working by passing in the Expression, like this:
_mockUserRepository.Setup(c => c.GetSingle(It.IsAny<Expression<Func<User, bool>>>())
.Returns(new User{EmailAddress = "a@b.com"});
但是，这意味着如果我使用任何表达式调用GetSingle方法，都会返回相同的结果.
However, this means if I call the GetSingle method with any expression, the same result is returned.
是否可以在设置中指定要使用的表达式?
Is there a way of specifying in the setup, what Expression to use?
推荐答案
如果您不介意通用设置，则这样会更简单.
If you don't mind a generic set up, it can be simpler like this.
_mockUserRepository.Setup(c => c.GetSingle(It.IsAny<Expression<Func<User, bool>>>()))
.Returns(new User { EmailAddress = "a@b.com" });
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