Brewing Espresso with Solar Power: Practical Android Testing
summary
Claims a repeatable Android test approach that actually works: a tiny app reads roof solar wattage (about $0.40/hour in the demo and roughly $1,000 returned so far) and the UI has five explicit states. Tests combine Espresso + MockWebServer + Dagger, unit-test the activity by injecting a mocked ViewModel, run end-to-end tests with a scriptable web server, avoid Thread.sleep by using Espresso synchronization and Rx schedulers, and keep Bluetooth behind a thin mockable hardware layer.
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