Use MOQ simulation OUT and REF parameters

In some cases, it is necessary to set OUT or Ref parameters in unit testing. MOQ is a popular simulation framework that allows you to simulate various scenes, but the question still exists: Can it specifically handle the out and REF parameters?

OUT parameters

yes, you can allocate the OUT parameters with MOQ. When you call the Setup method, MOQ will make a snapshot on the value of the OUT parameters.

Public Interface IService {{ void dosomething (out string a); } [Testmethod] Public void testparam () {{ var service = new mock (); string extenValue = "Value"; Service.setup (s => s.dosomething (out expectedValue); string activity; service.object.dosomething (out actualValue); Assert.areequal (ExpectedValue, ActualValue); }

public interface IService
{
    void DoSomething(out string a);
}

[TestMethod]
public void TestOutParam()
{
    var service = new Mock();
    string expectedValue = "value";
    service.Setup(s => s.DoSomething(out expectedValue));

    string actualValue;
    service.Object.DoSomething(out actualValue);
    Assert.AreEqual(expectedValue, actualValue);
}

At present, MOQ does not support setting REF parameters, but the search for solutions continues. More resources

If you want to know more information, the MOQ Quick Getting Started Guide provides a comprehensive overview of the framework of the framework:

https://github.com/moq/moq4/wiki/quickstart