The tests package contains coverage for the Lineage Settings provider as well as its public interfaces.
To run the tests (on a live device), build and install LineageSettingsProviderTests.apk and then run:
adb shell am instrument org.lineageos.lineagesettings.tests/androidx.test.runner.AndroidJUnitRunner
Note: we don't use -w to wait for the results because some of the tests involve creating and removing a guest account which causes adb connections to get reset.
View the results with:
adb logcat | grep TestRunner
End of the output should read something like:
09-20 16:40:52.879 4146 4165 I TestRunner: run finished: 30 tests, 0 failed, 0 ignored