Spock for Android

Source link: https://github.com/AndrewReitz/android-spock

Spock for Android

This library allows for the Spock Framework mocks to be used on Android. As well as add some helpful features to make Android testing easier.


Setup Groovy For Android

buildscript {

repositories {



 dependencies {

classpath 'com.android.tools.build:gradle:2.3.2'

classpath 'org.codehaus.groovy:groovy-android-gradle-plugin:1.2.0'

  apply plugin: 'com.android.application' apply plugin: 'groovyx.android'

See groovy-android-gradle-plugin for more information on setting this plugin up.

Setup Dependencies

dependencies {

androidTestCompile "com.andrewreitz:spock-android:2.0"

Setup Android Plugin

android {

 defaultConfig {

  testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"


 packagingOptions {

  exclude 'META-INF/LICENSE'


Write your tests

Tests must be placed in the ./src/androidTest/groovy directory.

Write your tests like you would regular spock tests. See the spock-android-sample project and Spock Framework for more details.


Objenesis and cglib do not work with Android. But that’s okay, using dexmaker we can still create mock objects in spock fashion. The only difference is instead of your test classes inheriting from Specification, you need to inherit from AndroidSpecification.

Note: You can not use mocked automatic getters and setters. Example mocked.getName() will work where as mocked.name will not. This is due to limitations of Android not having the java.bean package available.


UseActivity is an field annotation to get access to your Activity during tests. You can even provide bundle arguments by supplying a BundleCreator.


@UseActivity(MyActivity) def myActivity

UseApplication is a field annotation that supplies your Application.


@UseApplication(MyApplication) def myApplication

WithContext is a field annotation that supplies you with a context. This is not an implementation of your application.


@WithContext def context

All field annotations will be set during the setup fixture.

Other Notes

  • Android Studio can not run tests with spaces in the name. This is due to a limitation with how it tells the Android device how to run them. To get around this you can name tests without spaces. EX: "this_is_my_test" or just run them in gradle with gradle connectedAndroidTest.

  • Spock includes some references to Java packages that are not included in Android. You may need to use lintOptions { disable 'InvalidPackage' } to avoid lint failures.


Copyright 2017 Andrew Reitz

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at


Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.


LinearLayout with "pull-to-refresh" feature.

FragmentSwapper is an Open Source Android library that allows easy fragment's management. It is somewhat similar to Activities management model. For instance, new fragment can be launched from another one with action's request (using request code) and then recieve the result.

A couple of sticky header decorations for android's RecyclerView.

A 'Google Fit' like activity indicator for Android.

The Cult will provide a new layout for your Toolbar. This allow you to use with a custom SearchView with animation and more.

Android quick access to 1000+ pre-loaded @colors!


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