Robolectric Adventure
Download as PPTX, PDF3 likes1,658 views
The document serves as a survival guide for using Robolectric, an Android testing framework, covering its history, setup, and key testing strategies. It highlights the framework's ability to parse resources, intercept loading Android classes, and the importance of dependency injection using Roboguice. Additionally, it notes the drawbacks of Robolectric, including documentation issues and performance concerns during testing.
Robolectric Adventure
- 2. eBuddy • 2009 Chat (IM) • 2011 XMS • 2012 We started with Robolectric ANDROID PRODUCTS HISTORY
- 3. Android!
- 4. Relationships • Java • Maven • Android • Unit tests
- 5. First Android JUnit Test import org.junit.Before; import org.junit.Test; import static org.fest.assertions.api.Assertions.assertThat; public class MainActivityTest { private MainActivity activity; @Before public void setUp () throws Exception { activity = new MainActivity(); activity.onCreate( null ); } @Test public void checkInitialTexts () throws Exception { assertThat( activity.downloadButton.getText() ).isEqualTo( "Download" ); } }
- 6. First Android JUnit Test
- 7. Android Testing Options • No tests • POJO • Instrumental tests • Android sources • Mock Android • Robolectric!
- 8. What is inside • Parses resources • Intercepts loading Android classes • Rewrites method bodies with Javassist • Binds shadow objects to new Android objects • Proxies modified objects
- 10. Key Points from Demo #1 • Correct path to SDK in the local.properties • JUnit dependency before Android (IntelliJ IDEA) • @RunWith( RobolectricTestRunner.class)
- 11. Biggest Issue of Robolectric • Lack of documentation • Not many examples • Unscheduled releases • http://robolectric.blogspot.nl/ 2011/02/how-to-work-on- robolectric-in-parallel.html
- 12. Robolectric Drawbacks • Sometimes magic • PowerMock integration • Time of run for the first test
- 13. Shadowing • http://robolectric.blogspot.nl/2 011/01/how-to-create-your- own-shadow-classes.html • Bind shadow class • Use own Runner instead of Robolectric • (Submit pull request)
- 15. RoboGuice 2.0 public class MainActivity extends RoboActivity implements View.OnClickListener { @Inject Bus bus; @Override public void onCreate( Bundle savedInstanceState ) { bus.register( this ); } @Override public void onClick( View view ) { bus.post( new DownloadDataEvent( urlInput.getText().toString() ) ); } }
- 16. RoboGuice 2.0
- 17. Key Points from Demo #2 • InjectingTestRunner • Own AbstractModule implementation • Run injections before every test method
- 18. Android Real Jar (Robolectric 2.0) • http://robolectric.blogspot.nl /2011/08/using-robolectric- with-real-android.html • Robolectric 2.0 alpha
- 19. Robolectric or not Robolectric • Not a question for me • Follow industry
- 20. Thank you!