Clone this repo:
  1. b926575 Merge pull request #6031 from hoisie/espresso-toolbar-test by Michael Hoisie · 25 hours ago master
  2. a7a9e0e Separate espresso menu toolbar test into a new test class by Michael Hoisie · 26 hours ago
  3. c3a4e87 Merge pull request #6030 from hoisie/javadoc-comments by Michael Hoisie · 27 hours ago
  4. ab82453 Add missing class Javadoc comments for some tests by Michael Hoisie · 27 hours ago
  5. b11cb24 Merge pull request #6025 from robolectric/piper_339568195 by Michael Hoisie · 28 hours ago

Build Status GitHub release

Robolectric is the industry-standard unit testing framework for Android. With Robolectric, your tests run in a simulated Android environment inside a JVM, without the overhead of an emulator.


Here's an example of a simple test written using Robolectric:

public class MyActivityTest {

  public void clickingButton_shouldChangeResultsViewText() throws Exception {
    Activity activity = Robolectric.setupActivity(MyActivity.class);

    Button button = (Button) activity.findViewById(;
    TextView results = (TextView) activity.findViewById(;

    assertThat(results.getText().toString(), equalTo("Testing Android Rocks!"));

For more information about how to install and use Robolectric on your project, extend its functionality, and join the community of contributors, please visit


Starting a New Project

If you'd like to start a new project with Robolectric tests you can refer to deckard (for either maven or gradle) as a guide to setting up both Android and Robolectric on your machine.


testImplementation "org.robolectric:robolectric:4.4"

Building And Contributing

Robolectric is built using Gradle. Both IntelliJ and Android Studio can import the top-level build.gradle file and will automatically generate their project files from it.

Robolectric supports running tests against multiple Android API levels. The work it must do to support each API level is slightly different, so its shadows are built separately for each. To build shadows for every API version, run:

./gradlew clean assemble install compileTestJava

Using Snapshots

If you would like to live on the bleeding edge, you can try running against a snapshot build. Keep in mind that snapshots represent the most recent changes on master and may contain bugs.


repositories {
    maven { url "" }

dependencies {
    testImplementation "org.robolectric:robolectric:4.5-SNAPSHOT"