MockK is our go-to tool for mocks when writing tests for Kotlin applications. We like to use this library because of its first-class support for Kotlin language features such as coroutines or lambda blocks. As a native library, it helps our teams to write clean and concise code on testing Kotlin applications instead of using the inconvenient wrappers of Mockito or PowerMock.

MockK is a library for mocking written in Kotlin. Its main philosophy is to provide first-class support for Kotlin language features such as Coroutines or lambda blocks. As a native library, it helps our teams to write clean and concise code on testing Kotlin applications instead of using incommodious wrappers of Mockito or PowerMock.