如何在单元测试中模拟没有设置器的属性？

Question

I am trying to do unit testing for my universal app and am looking for a way to test a function that uses the Geocoordinate class.

Let's say you have the following function (which contains a lot more logic in my case, of course):

public int GetAccuracy(Geocoordinate coord) {
    return coord.Accuracy;
}

How can I unit test it? I can create a Geocoordinate object but I can't set an Accuracy in my unit test method. Accuracy and other properties like the latitude and longituge only have a getter.

Is there an easy way to solve this?

Answer 1

I would create my own abstract interface for Geocoordinate, and pass an instance of the interface to the GetAccuracy method. Your app would use an implementation that simply wraps a Geocoordinate instance, whilst your unit test would create a mocked version of the interface.