Responses to my article about Unit Testing in Swift often contained one question: How do you test system classes you can not instantiate or configure? I had this problem just a few weeks ago, while writing my current app. It uses MPMediaItems returned from MPMediaQueries. If you've ever used these, you'll know MPMediaItems can be instantiated, but all their properties are read-only. So I had to get creative!


I guess you came to this post by searching similar kind of issues in any of the search engine and hope that this resolved your problem. If you find this tips useful, just drop a line below and share the link to others and who knows they might find it useful too.

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This article is related to

Mocks,Swift,TDD