1# Flicker Test Library 2 3## Motivation 4This set of tests use the flickerlib from `platform_testing/libraries/flicker` to execute a set of common UI transitions to detect discontinuous or unpredictable behavior. 5 6The tests are organized in packages according to the transitions they test (e.g., `rotation`, `splitscreen`). 7 8## Adding a Test 9 10By default, tests should inherit from `TestBase` and override the variable `transition` (Kotlin) or the function `getTransition()` (Java). 11 12Inheriting from this class ensures the common assertions will be executed, namely: 13 14* all regions on the screen are covered 15* status bar is always visible 16* status bar is at the correct position at the start and end of the transition 17* nav bar is always visible 18* nav bar is at the correct position at the start and end of the transition 19 20The default tests can be disabled by overriding the respective methods and including an `@Ignore` annotation. 21 22For more examples of how a test looks like check `ChangeAppRotationTest` within the `Rotation` subdirectory. 23 24