Testing functions

on YouTube ↗40m

" summary

Shows how pulling logic into small Kotlin functions (examples: messagesOnlyIfLoggedIn, combineMessages, fetchMessages) replaces brittle Android-heavy classes, removes thread switching, and lets unit tests run without PowerMock. Uses Mockito only for higher-level providers but proves core logic tests need no mocks. Team reports ~2,000 unit tests running in ~20–30s after refactor. Demo merges server/local lists, filters deletions, sorts results, and the extracted functions behave deterministically and are easy to assert.

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" chapters (12)

1. 0:00Intro
2. 1:52Presentation plan
3. 2:28Testable code
4. 4:12Untestable code
5. 5:55Solution
6. 6:26Business logic
7. 13:14Testing
8. 24:24Fetch messages
9. 25:30Selling points
10. 28:33FAQ
11. 30:14Lazy way
12. 31:09Questions

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