Kotlin Testing (Page 1)

Libraries for Kotlin & JVM Testing

JVM and Kotlin testing libraries - Gradle dependencies and latest versions.

JVM Testing Newsletter | November 2021

Welcome to November issue of JVM Testing Monthly. This month you will find selection of Kotlin content! Keep learning and get better at unit testing everyday.

newsletter

JVM Testing Newsletter | October 2021

Welcome to October issue of JVM Testing Monthly! This month you will find curated list blogposts and articles about testing techniques, recordings from SpringOne conference and Android specific content! Keep learning and get better at unit testing everyday.

mock-static

Don't mock static: test Timber Logger with trees

Learn how to create custom Timber Tree to test log outputs in unit tests. Mocking Timber, unit testing logs.

newsletter

JVM Testing Newsletter | September 2021

Welcome to September issue of JVM Testing Monthly! This month you will find curated list blogposts and articles about testing techniques, effective usage of Kotlin and some Android goodies. Keep learning and get better at unit testing everyday.

newsletter

JVM Testing Newsletter | July 2021

What's new in JVM testing? Check July 2021 issue.

mock-static

Don't mock static: test SLF4J Logger with appenders

Do you want to assert that SLF4J actually logged warn with proper message? Check this guide on how to mock logger in tests, in Kotlin and Java.

newsletter

JVM Testing Newsletter | June 2021

What's new in JVM testing? Check June 2021 issue.

assertions

Building assertions with Strikt

Strikt is assertion library built for Kotlin with API which allows building multi assertions and gives us readable assertion errors.

newsletter

JVM Testing Newsletter | May 2021

What's new in JVM testing? Check May 2021 issue.

Fighting Testing Boilerplate with IntelliJ IDEA Live Templates

Writing tests involves repeating some patterns over and over again. IntelliJ IDEA can shorten the process of test creation with the help of live templates.

coroutines

How to test a time-dependent coroutine

Check two approaches to test kotlin coroutines code depending on time.

IDE

IntelliJ Live Template that makes my life little easier

IntelliJ is great tool for developer productivity. Check how can we adjust IDE to our preferences. Tutorial: how to create custom live template?

Android

Why my date formatters test fails in CI and passes locally?

The story of debugging date time formatting issue. It passes locally, it fails on CI. How can it be?

Introducing stories: Quick Testing Tips

KotlinTesting.com now has stories!

junit

Nested tests with Junit5

Nested tests in Junit5 allows us grouping test cases. Check how to do this in presenter tests.

conference

Q & A from conferences 2020

Frequently Asked Questions - now I'm giving answers about things you've asked me on 2020 conferences.

basics

Mocking and stubbing suspend functions with MockK

How to easily stub or mock suspend function in Kotlin? MockK is the solution. See MockK examples for mocking coroutines.

ktor

Intro to testing Ktor controllers

Functional tests in Ktor - how to mock application server with TestApplicationEngine?

basics

Using Mockito in Kotlin projects

Refactoring Java Mockito based test suite to Mockito-Kotlin DSL

Android

Testing Retrofit calls with OkHttp MockWebServer

How to test Retrofit calls? Example of testing requests executed with Retrofit and OkHttp.

Android

An attempt to unit test generated DataBinding code

Story of an attempt to test the code generated by DataBinding library.

time

Testing time-based code with Joda Time

Testing time based properties with Joda Time - hints how to write micro DSL included!

kotest

Parameterized tests with Kotest

Creating parameterized tests in Kotlin: data driven testing, collection inspections and generating test cases with FreeSpec.

exceptions

Handling exceptions in tests: Junit & Kotest

Exceptions are crucial part of some Java APIs. How to assert that exceptions was thrown? In this note you will examples of various exception assertion techniques.