test(Fabric): add e2e test for issue 577

[kligarski]

Description

Check which example screens from issues/PRs can be used in e2e testing for tests Test550, ..., Test577 and implement them if possible for Fabric.

Test550

Skipped because the issue is present on the current version (custom native header back button image). When it is resolved, we might create an e2e test for it.

Test556

Skipped because we can't check flickering nor non-deterministic white screen bug.

Test564

Skipped because the issue is still present on the current version (headers overlapping when one navigatior has headerTransparent: true). When it is resolved, we might create an e2e test for it.

Test577

Test created. It checks whether attempting to close a gestureEnabled: false modal on iOS doesn't break the modal's height allowing the content underneath to be visible. The test is present only on iOS because of differences in modal between iOS and Android.

Changes

• add Test577
• add comments for test screen in apps/src/tests/index.ts with the reason for (not) implementing e2e test for it
• add e2e-utils.ts with decribeIfiOS function that will skip running the tests if they are run on Android

Test code and steps to reproduce

CI

Checklist

• Ensured that CI passes

[kligarski]

After splitting tests into seperate files, CI fails on Android because some tests are iOS-only. We need to figure out how to handle it.

[kkafar]

I don't know the details yet, but maybe lets add some else clause & add some empty test on Android?

[kligarski]

We might consider using --passWithNoTests Jest flag to avoid wasting resources for testing only that a test exists in the menu on Android (considering how much time scrolling takes in these tests). We may also create a test that asserts something visible from the start but it feels wrong to do so.

[kkafar]

Looks good initially

[kligarski]

It turns out that --passWithNoTests works only if there are no files at all - this is not our case. I created an utility that allows us to use describe or describe.skip based on platform (Android or iOS).

[kkafar]

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