CODEWITHSUNDEEP
c#reflectionmoq
Jesper Kihlberg
Jesper Kihlberg

Reputation: 566

How do I create a mock using reflection with parameters using Moq?

I am trying to build a Generic testbuilder for generating objects, that i want to use in tests. One of the things I want to create is Mock implementations of interfaces. I want these Mocks to have Strict mockbehaviour, and the only way to set that afaik is by constructor parameter. I am using this code to create my interface mock:

public object Build(Type type)
{
    if (type.IsInterface)
    {
       List<object> mockParameters = new List<object>();
       mockParameters.Add(MockBehavior.Strict);
       Mock mock = (Mock)Activator.CreateInstance(typeof(Mock<>).MakeGenericType(type), mockParameters);
       return mock.Object;
    }
}

This gives me an ArgumentException: Constructor arguments cannot be passed for interface mocks. How can i set MockBehavior.Strict on my mock created with reflection?

Upvotes: 3

Views: 2580

Answers (1)

Daniel Hilgarth
Daniel Hilgarth

Reputation: 174289

Your code can be greatly simplified to this:

public T Build()
{
    if (typeof(T).IsInterface)
    {
       return new Mock<T>(MockBehavior.Strict).Object;
    }
}

Upvotes: 1

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