Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Save more on your purchases now! discount-offer-chevron-icon
Savings automatically calculated. No voucher code required
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Test-Driven iOS Development with Swift 4 - Third Edition

You're reading from   Test-Driven iOS Development with Swift 4 - Third Edition Write Swift code that is maintainable, flexible, and easily extensible

Arrow left icon
Product type Book
Published in Oct 2017
Publisher Packt
ISBN-13 9781788475709
Pages 222 pages
Edition 3rd Edition
Languages
Arrow right icon
Author (1):
Arrow left icon
Dr. Dominik Hauser Dr. Dominik Hauser
Author Profile Icon Dr. Dominik Hauser
Dr. Dominik Hauser
Arrow right icon
View More author details
Toc

Summary

In this chapter, we wrote tests using test expectations provided by XCTest. We also used stubs to fake a server. We took a look at how both ways bring us closer to our goal--a finished app with as few bugs as possible.

We used dependency injection to catch the completion handler of the session data task in our fake URL session. This way, we could feed test data into the implementation code and assert that the code is implemented as expected. As we controlled the data that the completion handler received, we were able to simulate all kinds of errors and drive the implementation of the correct error handling.

In the following chapter, we will put the different parts of the last few chapters together and finally see the app running.

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at R$50/month. Cancel anytime