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# Flicker Test Library
## Motivation
This 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.
The tests are organized in packages according to the transitions they test (e.g., `rotation`, `splitscreen`).
## Adding a Test
By default, tests should inherit from `TestBase` and override the variable `transition` (Kotlin) or the function `getTransition()` (Java).
Inheriting from this class ensures the common assertions will be executed, namely:
* all regions on the screen are covered
* status bar is always visible
* status bar is at the correct position at the start and end of the transition
* nav bar is always visible
* nav bar is at the correct position at the start and end of the transition
The default tests can be disabled by overriding the respective methods and including an `@Ignore` annotation.
For more examples of how a test looks like check `ChangeAppRotationTest` within the `Rotation` subdirectory.
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