The new robolectric version changed the behavior such that the app ID
that was returned for our app was `org.mozilla.fenix.debug` instead of
(I guess) `org.mozilla.fenix`. In general, relying on robolectric can be
fragile, such as this case, so it's better to mock. Also, this test
behavior should theoretically have varied between build flavors so
mocking prevents the tests from breaking across flavors.
This is how we can apply the new test runner to remove duplication.
This commit was generated programmatically with the following commands:
```
// Replace test runners with new one.
find app/src/test -type f -exec gsed -i "s/@RunWith(RobolectricTestRunner::class)/@RunWith(FenixRobolectricTestRunner::class)/" {} +
find app/src/test -type f -exec gsed -i "s/@RunWith(AndroidJUnit4::class)/@RunWith(FenixRobolectricTestRunner::class)/" {} +
// Replace imports of old test runners with new one
find app/src/test -type f -exec gsed -i "s/org.robolectric.RobolectricTestRunner/org.mozilla.fenix.helpers.FenixRobolectricTestRunner/" {} +
find app/src/test -type f -exec gsed -i "s/androidx.test.ext.junit.runners.AndroidJUnit4/org.mozilla.fenix.helpers.FenixRobolectricTestRunner/" {} +
// Remove unused imports
find app/src/test -type f -exec gsed -i "/@Config(application = TestApplication::class)/d" {} +
find app/src/test -type f -exec gsed -i "/import org.mozilla.fenix.TestApplication/d" {} +
find app/src/test -type f -exec gsed -i "/import org.robolectric.annotation.Config/d" {} +
```
Where gsed is the GNU version of sed installed via homebrew. After
running these commands, I need to manually clean up the following files:
- FenixRobolectricTestRunner
- LocaleManagerExtensionTest
This introduces test coverage, using the Glean SDK
testing API, for the metrics that are set at startup
by Fenix in the GleanMetricsService.
This additional adds a basic test for the translation
of the `app_opened` event.
Roger Yang
Sebastian Kaspari
Michael Comella
shldhll
Sawyer Blatz
Alessio Placitelli