ANDROID.md

title	description
MockK Android support	MockK supports regular unit tests, Android instrumented tests via subclassing(< Android P) and Android instrumented tests via inlining(≥ Android P)

Support

MockK supports:

• regular unit tests
• Android instrumented tests via subclassing(< Android P)
• Android instrumented tests via inlining(≥ Android P)

DexOpener

To open classes before Android P you can use DexOpener, example

Implementation

Implementation is based on dexmaker project. With Android P instrumentation tests may use full power of inline instrumentation, so object mocks, static mocks and mocking of final classes are supported. Before Android P only subclassing can be employed and that means you need 'all-open' plugin.

Unfortunately, public CIs alike Travis and Circle are not supporting emulation of Android P because of absense of ARM Anroid P images. Hope this will change soon.

Supported features

Feature	Unit tests	Instrumentation test
		< Android P	≥ Android P
annotations	✓	✓	✓
mocking final classes	✓	can use DexOpener	✓
pure Kotlin mocking DSL	✓	✓	✓
matchers partial specification	✓	✓	✓
chained calls	✓	✓	✓
matcher expressions	✓	✓	✓
mocking coroutines	✓	✓	✓
capturing lambdas	✓	✓	✓
object mocks	✓		✓
private function mocking	✓		✓
property backing field access	✓	✓	✓
extension function mocking (static mocks)	✓		✓
constructor mocking	✓		✓

Installation

All you need to get started is just to add a dependency to MockK library.

Unit tests

testImplementation "io.mockk:mockk:{version}"

Android instrumented tests

androidTestImplementation "io.mockk:mockk-android:{version}"

Documentation

Check full documentation here