Most of the time you would like to inject dependencies to your class directly – through the class constructor or by setting required properties via setters. No matter what programming style you prefer you may encounter situation when some dependency cannot or shouldn’t be passed directly to your system under test. Good example of that …
Don’t mock static: test SLF4J Logger with appenders Read More »
Articles & blogposts Learning shared and state flows with tests State and shared Flows are hot streams that can propagate items to multiple consumers. State Flows have features such as sharing strategies and conflation. Whereas, shared flows allow you to replay and buffer emissions. In this article, we will explore features of shared and state …
Strikt is assertion library built for Kotlin with API that allows building fluent assetions. To add library to project, add following dependency to your build.gradle repositories { mavenCentral()}dependencies { testImplementation("io.strikt:strikt-core:0.31.0")} To get latest version, visit Github Releases page: https://github.com/robfletcher/strikt/releases Basic usage Good assertion library should give us readable assertion errors. Strikt renders error in the …
Articles & blogposts Unit Testing Delays, Errors & Retries with Kotlin Flows Unit testing asynchronous code is not easy – in this blogpost Mohit Sarveiya gives us tips on how to write unit tests for for Kotlin Flow delays, errors and retries. Unit Testing Delays, Errors & Retries with Kotlin Flows Featured in Android Weekly …
This article will focus on JUnit 5, but most of the things should be applicable for any other testing framework, your imagination is the only limit. JUnit5 File and code templates IntelliJ IDEA allows creating test classes with the following shortcut (Ctrl + Shift + T / ⇧ + ⌘ + T). This window allows …
Fighting Testing Boilerplate with IntelliJ IDEA Live Templates Read More »
The issue Unit testing is the fastest way to check if some piece of our application works as we expect. But what if we have to test some features that strongly depend on time? Should we allow our tests execute for instance for few minutes? Of course we shouldn’t! In this blog post I will …
Creating unit test usually requires some boilerplate – you have to create separate class in proper directory, add annotations and provide test method name. While it’s not much, I started to think: how can this boilerplate could be reduced? To make our test discoverable by test framework and IDE, we usually need to annotate test …
IntelliJ Live Template that makes my life little easier Read More »
The issue For new Android project I decided to go with Github Actions as CI environment – we use Github across organization and some backend projects are already running in Github workflows, creating new project with is a good idea. I’ve prepared configuration using following tutorial: How-to Github Actions: Building your Android App I’ve recently …
Why my date formatters test fails in CI and passes locally? Read More »
Available for web and mobile at: https://stories.kotlintesting.com I will share stories on social media, and after first release cycle I will write up summary for tips and tricks that weren’t mentioned in blog posts before. Make sure to follow KotlinTesting social media profiles on Facebook and Twitter: KotlinTesting KotlinTesting. Mi piace: 29. Helping people write …
The problem Let’s suppose that we have to write tests for presenter or viewmodel that supports two paths: anonymous and logged in user. We have use cases telling us if user is currently logged in, use case for fetching feed which we will present to the user and router for handling some of navigation events. …
