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Testing in Kotlin

This workshop teaches how to use modern Kotlin tools and libraties for effective testing. It also covers the essential testing philosophy and best practices.

At the workshop you will

Learn from lecture supported by slides

Solve coding challenges

Complete practical exercises

During the workshop we cover:

  • The philosophy of testing
  • Types of tests
  • What tests do your application needs?
  • JUnit4 and JUnit5
  • Assertions
  • Parametrized tests
  • Using fakes
  • Testing business logic
  • Using mocks
  • Extracting test data, objects, functions
  • AssertJ
  • Kotest
  • Testing Kotlin Coroutines (optional)
  • Testing Flow (optional)
  • Defining extensions/rules
  • Testing view models (for Android groups)
  • Testing metrics
  • Interoperability between Kotlin and Java
  • Summary of the best practices

How long does it take?

The workshop lasts 2 days.


  • At least basic Kotlin understanding.
Marcin Moskała

Marcin Moskała

Marcin Moskala is a highly experienced developer and Kotlin instructor as the founder of Kt. Academy, an official JetBrains partner specializing in Kotlin training, is known for his significant contributions to the Kotlin community. Moskala is the author of several widely recognized books, including "Effective Kotlin," "Kotlin Coroutines," "Functional Kotlin," "Advanced Kotlin," "Kotlin Essentials," and "Android Development with Kotlin."

Beyond his literary achievements, Moskala is the author of the largest Medium publication dedicated to Kotlin. As a respected speaker, he has been invited to share his insights at numerous programming conferences, including events such as Droidcon and the prestigious Kotlin Conf, the premier conference dedicated to the Kotlin programming language.

One of the first certified Kotlin training worldwide!

You will be trained by an expert who is an official JetBrains' Kotlin training partner. The quality of his workshops was checked and certified by the creators of the Kotlin language itself.

JetBrains certified Kotlin Training


Choose this option if you need a workshop for your team or company. The basic price is 4500 EUR for the group for 2 days.

Reserve now

Choose this option if you need a workshop for yourself or for a small group of people. The basic price is 300 EUR per person for the whole workshop.

Reserve now

Our experts offer consultations for both companies and individuals. The price is set individually.

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