This patch adds the JetNews jank-testing workload. This is accomplished
through the uiauto helper library and the jank test classes.
This workload requires a JetNews app APK to be available. We plan to
make it available through the workload-automation-assets repo.
At the end of the run, users should end up with a json file containing all
the frame/jank metrics.
There are 3 parameters for this workload:
- tests: Specifies which of the 3 available tests to run (default is to run
all of them)
- flingspeed: The speed of the fling interactions.
- repeat: How many times each of the selected tests is to be executed in a
single measuring session.
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