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Moq + Unit Testing - System.Reflection.TargetParameterCountException: Parameter count mismatch

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轻奢々
轻奢々 2020-11-30 12:15

I\'m tring to use a lambda with a multiple-params function but Moq throws this exception at runtime when I attempt to call the mock.Object.Convert(value, null, null, n

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  • 抹茶落季
    抹茶落季 (楼主)
    2020-11-30 12:36

    Perhaps it's because you are passing null but It.IsAny() is expecting any object except null? What happens if you do the following?:

    var actual = mock.Object.Convert(value, new object(), typeof(object), CultureInfo.CurrentCulture);

    This is just a stab in the dark from me, I'm more familiar with Rhino.Mocks.

    My 2nd guess:

    Having looked at the Moq.chm that comes with the download,

    You are using the Setup(Expression>) method which "Specifies a setup on the mocked type for a call to a void method."

    You want te Setup(Expression>) method that "Specifies a setup on the mocked type for a call to a value returning method".

    So you could try:

    mock.Setup(
    conv => {
        conv.Convert(
            It.IsAny(), 
            It.IsAny(),
            It.IsAny(), 
            It.IsAny());
        return  num + 5;
        });

    
    
             
    
                                                        
    
            
            
    
              
                
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