Unit testing retain cycles Paul Samuels demonstrates how we can use two helper functions to easily unit test for retain cycles. Posted on November 27, 2018 #testing #retain
Async/await in Swift unit tests John Sundell shows us how to use the async/await programming paradigm to write concise unit tests for asynchronous code. Posted on September 25, 2018 #asynchronous #testing
Swift Evolution - RFC: In-Line Tests In this RFC, Robert Widmann suggests a very interesting Swift evolution idea. Robert comments that currently, unit testing in Swift feels like a second-class citizen, and comes with significant overhead. To improve the situation, he suggests the idea of in-line tests, enabling us to add unit tests right next to the code being tested. I really like this idea. 👍🏽. Posted on April 28, 2018 #testing
The Cake Pattern with Swinject Peter-John Welcome demonstrates how we can use the Swinject framework together with the cake pattern to implement dependency injection. The major benefit is decoupling of components, which in turn means easier unit testing. Posted on April 24, 2018 #injection #testing
Unit testing asynchronous Swift code John Sundell demonstrates a few techniques that can help us test asynchronous code. He first looks as expectations and dispatch queues, and then shows us how we can make our asynchronous code synchronous for the purposes of testing. Posted on March 3, 2018 #testing #asynchronous
Reducing flakiness in Swift tests John Sundell shows us how to avoid three common sources of flakiness when testing - timing, async code, and UI testing delays. There are some good tips here and as John reminds us, the key to writing better tests is to always make the right assumptions. Posted on August 23, 2017 #testing
Writing end-to-end JSON mapping tests in Swift John Sundell looks at how we can ensure the integrity of JSON retrieved from an API by using end-to-end tests. To avoid performing a network request each time we want to run our tests, he uses an Swift script which is run once to day to retrieve the JSON from the API. The example uses his own Unbox library for JSON mapping, but of course we could substitute the native Swift Codable protocol for our JSON decoding. Posted on July 17, 2017 #JSON #testing
Test Doubles in Swift Unit testing components with dependencies can be complicated. Here, Marco Santarossa explains what test doubles are, and how they can help with such unit testing. Posted on April 29, 2017 #testing
Time traveling in Swift unit tests Writing tests against code that relies on dates can be tricky. In this short post, John Sundell looks at how we can test such code in a simple and fun way, based on what he calls "time traveling". Posted on April 28, 2017 #testing