Rhino Mocks收到参数，修改它并返回？

Question

我想写的东西是这样的：

myStub.Stub(_ => _.Create(Arg<Invoice>.It.Anything)).Callback(i => { i.Id = 100; return i; }); 

我想传递给嘲笑，修改并返回实际的对象。

这是Rhino Mocks的情况吗？

Answer 1

你可以使用WhenCalled方法是这样的：

myStub 
    .Stub(_ => _.Create(Arg<Invoice>.Is.Anything)) 
    .Return(null) // will be ignored but still the API requires it 
    .WhenCalled(_ => 
    { 
     var invoice = (Invoice)_.Arguments[0]; 
     invoice.Id = 100; 
     _.ReturnValue = invoice; 
    }); 

，然后你可以创建你的存根，例如：

Invoice invoice = new Invoice { Id = 5 }; 
Invoice result = myStub.Create(invoice); 
// at this stage result = invoice and invoice.Id = 100