Unit test class for Swift project

Question

I created a new Single view Swift project and create a MyModel:

class MyModel {

    func add(a : Int, b : Int) -> Int {
        return a + b
    }
}

But I had a problem to create a test case. Error message:

/Volumes/Macintosh HD/Users/user/Projects/TestCase/TestCaseTests/TestCaseTests.swift:26:19: Use of unresolved identifier 'model'

As you see, import TextCase (my target) didn't solve the problem. The only way to solve the problem is to add MyModel.swift to target: TestCaseTests. But this is different from Objective-C project (I don't need to add the .m files to test case target at all). Is this a bug or a design?

Answer 1

You should add the swift file you are testing to the testing target.

This can be done by clicking on the swift file, going to the Utilities panel (the one on the right) and checking the checkbox under "Target membership".

No need to change the access modifier to public, internal will do.

---

UPDATE

As of XCode 7 there is no need to make any file member of the testing target any more.

The recommended way is to use @testable import {Product Module Name}. Just make sure to use the product module's and not the projects' folder name.