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Unit Testing Tutorial: Mocking Objects

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1

In this tutorial you’ll learn how to write your own mocks, fakes and stubs to test a simple app that helps you remember your friends birthdays.

This is a companion discussion topic for the original entry at https://www.raywenderlich.com/1752-unit-testing-tutorial-mocking-objects
2

couldn’t get XCTAssert(storeCoordinator.removePersistentStore(store, error: &error),
“couldn’t remove persistent store: (error)”) in teardown()
to work in swift 2.0 can anyone help? after upgrading

3

You’ve got to update it to a try/catch block.

    do {
        try storeCoordinator.removePersistentStore(store)
    } catch {
        print("couldn't remove persistent store: \(error)")
    }
4

so many bugs in starter code :frowning: can’t compile

5

even with old xcode 7.3

/Downloads/Birthdays_Starter-2/Birthdays/PeopleListDataProvider.swift:182:15: Objective-C method ‘controller:didChangeObject:atIndexPath:forChangeType:newIndexPath:’ provided by method ‘controller(:didChangeObject:atIndexPath:forChangeType:newIndexPath:)’ conflicts with optional requirement method 'controller(:didChangeObject:atIndexPath:forChangeType:newIndexPath:)’ in protocol ‘NSFetchedResultsControllerDelegate’

6

Copy the code in that method, then reimplement the didChangeObject method, and paste the code in. I just completed the tutorial. There should be no more major bugs that aren’t already listed.

7

I’m getting the same error after updating the swift version. Can you elaborate fibonnacired on how to resolve the error. I do not see the didChangeObject method implemented anywhere and seems to only be used as a parameter in the controller method. I’m very new to swift so might be missing something completely obvious. Thanks.

8

I see now. Rewrite “public func controller”, tab to autocomplete, then paste in the code. Replaces “didChangeObject anObject: NSManagedObject” with “didChangeObject anObject: AnyObject” Thanks!

9

Can we get a new sample project for iOS 10 with Swift 3.0 please?

10

How do you test the behaviour of a method that uses internal private access method in its logic ? How to write mock to private method ? Does it make sense ?

11

This tutorial is more than six months old, so questions regarding it are no longer supported. We will update it as soon as possible. Thank you! :]