在
this question,我发现
this answer似乎是解决问题的最好方法.
bool SomeFunc(out ISomeObject o);
但是,我想要模拟的对象有一个out函数如下:
void SomeFunc(out ISomeObject o);
来自上述答案的相关代码片段:
public delegate void OutAction<TOut>(out TOut outVal); public static IReturnsThrows<TMock,TReturn> OutCallback<TMock,TReturn,TOut>( this ICallback<TMock,TReturn> mock,OutAction<TOut> action) where TMock : class { // ... }
Void不是TReturn的有效类型.因此,我相信我必须以某种方式调整此代码,以使其与返回void的方法一起使用.但是怎么样?
解决方法
也许你只需要这个:
ISomeObject so = new SomeObject(...); yourMock.Setup(x => x.SomeFunc(out so));
然后,当您在测试的代码中使用yourMock.Object时,so实例将“神奇地”作为out参数出现.
它有点不直观(“out in in”),但它有效.
补充:不确定我理解这个场景.以下完整程序工作正常:
static class Program { static void Main() { // test the instance method from 'TestObject',passing in a mock as 'mftbt' argument var testObj = new TestObject(); var myMock = new Mock<IMyFaceToBeTested>(); IMyArgFace magicalOut = new MyClass(); myMock.Setup(x => x.MyMethod(out magicalOut)).Returns(true); testObj.TestMe(myMock.Object); } } class TestObject { internal void TestMe(IMyFaceToBeTested mftbt) { Console.WriteLine("Now code to be tested is running. Calling the method"); IMyArgFace maf; // not assigned here,out parameter bool result = mftbt.MyMethod(out maf); Console.WriteLine("Method call completed"); Console.WriteLine("Return value was: " + result); if (maf == null) { Console.WriteLine("out parameter was set to null"); } else { Console.WriteLine("out parameter non-null; has runtime type: " + maf.GetType()); } } } public interface IMyFaceToBeTested { bool MyMethod(out IMyArgFace maf); } public interface IMyArgFace { } class MyClass : IMyArgFace { }
请通过使用我的示例中的类和接口的名称来说明您的情况有何不同.