Testing Retrofit & OkHttp with MockWebServer — From Setup to Network-Condition Simulation
The first time I had a production bug in a Retrofit API client — a header missing on one endpoint — I checked our tests and realized we we...
Articles in Testing
Testing Room Database — In-Memory Setup, DAO Tests, Migrations, Foreign Keys, and the Tests That Save Production
A Room migration that worked on my emulator and crashed for 12% of users is why I wrote this. Manual testing covers three scenarios; a 60-line test fi...
Testing Coroutines and Flows in Depth — runTest, TestDispatcher, Virtual Time, Turbine Patterns, and Production Recipes
Testing async code is hard — coroutines run on dispatchers, Flows emit over time, one missing advanceUntilIdle can silently skip half the test. ...
Compose UI Testing — Semantics, Finders, Assertions, Synchronization, and Production Patterns
The semantics tree is what tests see — not pixels. This complete guide covers Compose UI testing from zero to production: createComposeRule setu...
Unit Testing in Android — JUnit 5, MockK, Turbine, ViewModels, Flows, and Production Patterns
Unit tests catch bugs before users do. This guide walks through the core mindset, setup with JUnit 5, MockK, Turbine, and coroutines-test, and how to ...
