Sharing (tests) is caring ❤️

Transcript

1. SHARING (TESTS) IS CARING

2. THE ISSUE Device tests are slow. Like real slow.

3. A HACKY SOLUTION Running Android tests on JVM

4. SHARED FOLDER Same level as androidTest and test. Same structure

   as well.

5. android { ... sourceSets { String sharedTestDir = 'src/sharedTest/java' test

   { java.srcDir sharedTestDir } androidTest { java.srcDir sharedTestDir } } } What happens in build.gradle stays in build.gradle

6. testImplementation 'androidx.test:runner:1.1.1' testImplementation 'androidx.test.espresso:espresso-core:3.1.1' testImplementation 'androidx.test.ext:junit:1.1.0' testImplementation 'org.robolectric:robolectric:4.1' androidTestImplementation 'androidx.test:runner:1.1.1'

   androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1' androidTestImplementation 'androidx.test.ext:junit:1.1.0' We ❤ dependencies

7. testImplementation 'androidx.test:runner:1.1.1' testImplementation 'androidx.test.espresso:espresso-core:3.1.1' testImplementation 'androidx.test.ext:junit:1.1.0' testImplementation 'org.robolectric:robolectric:4.1' androidTestImplementation 'androidx.test:runner:1.1.1'

   androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1' androidTestImplementation 'androidx.test.ext:junit:1.1.0' We ❤ dependencies

8. Everything always works as planned — Nobody ever

9. testOptions { unitTests { includeAndroidResources = true returnDefaultValues = true

   } } JVM needs to know, after all.

10. @RunWith(AndroidJUnit4::class) class MainActivityTest { @Test fun simple_test() { ActivityScenario.launch(MainActivity::class.java) onView(withId(R.id.fab)).check(matches(isDisplayed()))

    } }

11. @RunWith(AndroidJUnit4::class) class MainActivityTest { @Test fun simple_test() { ActivityScenario.launch(MainActivity::class.java) onView(withId(R.id.fab)).check(matches(isDisplayed()))

    } } It wouldn't really work without that

12. RUNNING TESTS

13. DEVICE TESTS

14. JVM TESTS

15. Test configuration should have different names — Me. So it's

    true.

16. FUN FACT

17. Default is Device tests! — Me again.

18. WAIT A MINUTE !

19. IF BOTH CONFIGURATIONS CAN SEE SHARED TESTS...

20. ... DOES IT MEAN JENKINS WOULD RUN THEM TWICE?

21. YES!

22. BUT THAT IS A PROBLEM

23. YES!

24. BUT WE CAN FIX IT! !

25. ! EXCLUDE SOME TESTS!

26. interface DoNotRunOnJvm Inside sharedTest folder

27. testOptions { ... unitTests.all { useJUnit { excludeCategories 'net.orgiu.tests.DoNotRunOnJvm' }

    } } Once more in build.gradle

28. testOptions { ... unitTests.all { useJUnit { excludeCategories 'net.orgiu.tests.DoNotRunOnJvm' }

    } } Once more in build.gradle

29. ... AND FINALLY @RunWith(AndroidJUnit4::class) @Category(DoNotRunOnJvm::class) class MainActivityTest { @Test fun

    simple_test() { ActivityScenario.launch(MainActivity::class.java) onView(withId(R.id.fab)).check(matches(isDisplayed())) } }

30. ... AND FINALLY @RunWith(AndroidJUnit4::class) @Category(DoNotRunOnJvm::class) class MainActivityTest { @Test fun

    simple_test() { ActivityScenario.launch(MainActivity::class.java) onView(withId(R.id.fab)).check(matches(isDisplayed())) } }

31. REMEMBER TO TEST

32. YOU'RE BEING WATCHED.

33. ! THANKS FOR WATCHING!