Android Testing

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" summary

A sample note-taking app is built with MVP and two Gradle flavors (prod and mock flavor) so tests run hermetically by swapping real services for in-memory or file-backed fakes. Fast local unit tests use the Mockable Android Jar, UI tests use Espresso with ActivityTestRule, and a performance harness captures dumpsys, Logcat and Systrace per test. Running the harness surfaces a glaring regression — 91% janky frames on one scenario.

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" chapters (18)

1. 0:00Intro
2. 1:26Meet your testing tools
3. 3:35Notes app
4. 7:02Isolate from external dependencies
5. 8:06Choose flavors prod/mock
6. 8:48Gradle tasks
7. 15:03Mockable Android Jar
8. 17:05Run from Gradle
9. 17:19Test-driven development
10. 18:57Run on device/ emulator
11. 24:21Add note feature
12. 24:42Anatomy of a UI test
13. 26:09Add note screen test
14. 29:53Go green
15. 33:11Perf Testing Harness
16. 33:54Custom Test Rules
17. 35:00Running the harness
18. 35:32Test output

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