Android Testing - Tips

• What is Android Context class? It's "an interface to global information about an application environment. This is an abstract class whose implementation is provided by the Android system."
• The native Android OS support for testing is based on jUnit 3. Don't try to use jUnit 4. The results are not predictable. I had the first test run fine, but no more tests would finish.
• Testing support:
  
  
  • Use ActivityInstrumentationTestCase2 for functional testing of a single Activity. The selected activity will be created and managed by the system as specified by the regular activity lifecycle. Tests can interact with the UI widgets to imitate user actions.
  • Use ActivityUnitTestCase to run unit tests of an isolated activity. Activity under test will not be subject to regular activity lifecycle.
• If you see a problem of type error: device not found and shutdown the adb.exe process. It will restart automatically and try to reconnect to the device. Sometimes, starting the intended Instrumentation on emulator (an option in Dev Tools application) does it all for you.
• If adb does not connect after restarting it (shows "DeviceMonitor]Connection attempts: 11..." and LogCat nic nie pokazuje), restart PC.