how to mock/inject a getter into a system under test?

Question

Mark provides an elegant answer to a related question.

My class has a read only property:

public class myclass
{
    ...
    public virtual string Devicelocation => Message.Message.Items[0].ToString();
    ...
    public someMethod()
    {
        if(Devicelocation=="YourMom")
        {
            //dostuff
        }
        else
        {
            //dootherstuff
        }
    }
}

I would like to execute someMethod() with an assumption for what Devicelocation is equivalent to.

How do I mock or inject a value into Devicelocation?

It's not very clear what this DeviceLocation property does, you can just probably inject in in class constructor to some private field and make getter use this private field. — Red, Mar 06 '16 at 13:22

Trikaldarshiii · Answer 1 · 2016-03-06T16:03:29.327

2

You can set up Devicelocation like this:

var stub = new Mock<myclass>();
stub.SetupGet(x => x.Devicelocation).Returns("YourMom");

stub.Object.Devicelocation will now return "YourMom".

Update:

stub.Object.someMethod();

edited Mar 06 '16 at 16:03

answered Mar 06 '16 at 13:21

Trikaldarshiii

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how would i execute a concrete instance of someMethod(), assuming a specific value for devicelocation? – Alex Gordon Mar 06 '16 at 13:25
well when you are running a method on the object, i believe you are testing the moq framework itself and not the actual class that you've implemented and intend to test – Alex Gordon Mar 06 '16 at 17:21
Upvoted for the return value. – Aaron Jul 28 '22 at 13:45

how to mock/inject a getter into a system under test?

1 Answers1

Update:

Linked