Sharing (tests) is caring ❤️

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!