Philipp Hauer's Blog

Java Ecosystem, Kotlin, Distributed Systems, Sociology of Software Development

Assertj

Focus on Integration Tests Instead of Mock-Based Tests

Posted on Apr 1, 2019

Focus on Integration Tests Instead of Mock-Based Tests

Testing classes in isolation and with mocks is popular. But those tests have drawbacks like painful refactorings and the untested integration of the real objects. Fortunately, it’s easy to write integration tests that hit all layers. This way, we are finally testing the behavior instead of the implementation. This post covers concrete code snippets, performance tips and technologies like Spring, JUnit5, Testcontainers, MockWebServer, and AssertJ for easily writing integration tests. Let’s discover integration tests as the sweet spot of testing.

Best Practices for Unit Testing in Kotlin

Posted on Feb 12, 2018

Best Practices for Unit Testing in Kotlin

Unit Testing in Kotlin is fun and tricky at the same time. We can benefit a lot from Kotlin’s powerful language features to write readable and concise unit tests. But in order to write idiomatic Kotlin test code in the first place, there is a certain test setup required. This post contains best practices and guidelines to write unit test code in Kotlin that is idiomatic, readable, concise and produces reasonable failure messages.

Testing RESTful Services in Java: Best Practices

Posted on Mar 29, 2016

Testing RESTful Services in Java: Best Practices

Testing RESTful Web Services can be cumbersome because you have to deal with low-level concerns which can make your tests verbose, hard to read and to maintain. Fortunately, there are libraries and best practices helping you to keep your integration tests concise, clean, decoupled and maintainable. This post covers those best practices.