fix tests with broken context mocks in android/player

[tmarmer]

Issue: Some unit tests in android/player were not running because MockK throwing errors when it could not create a mock of android.content.Context. The errors were being swallowed by something and the test runner would treat each of these files as having no tests rather than causing a failure.

Fix:

• Move broken tests to be instrumented tests under androidTest.
• Migrate these tests from using junit5 to junit4
  • To support this, updated io.mockk:mockk to version 1.12.5. JUnit4 support was added in 1.12.4 (notes) so I updated to the latest non-breaking version I could find.
• use the application context instead of a mock context
• Fix any test failures after doing the above. These failures were
  • Some tests in AndroidPlayerTest checked the number of plugins. The list is now size 6 instead of 5
  • Some tests in SimpleAssetTest were failing with broken styles. Changed style used in these tests
  • HydrationScopeTest was failing the test test hydration scope is cancelled on flow end due to a race condition in the assertions. Added a waitForCondition to fix this.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.77%. Comparing base (9ae91bc) to head (e5ccb1a).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #774   +/-   ##
=======================================
  Coverage   85.77%   85.77%           
=======================================
  Files         504      504           
  Lines       22679    22679           
  Branches     2651     2651           
=======================================
  Hits        19454    19454           
  Misses       2896     2896           
  Partials      329      329           

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[brocollie08]

do we need to do this in order to get all these tests picked up

[sugarmanz]

Yeah — there is logic here for automatically compiling this list, but it picks up every file. Ideally, we can expose that logic to let us filter out files (like not ending in Test) to build up the list here. We could also put the filter in the rule, but that's pretty opinionated.

[tmarmer]

Yeah, if I don't add them manually, it picks up every .kt file as a test and any of the util / non-test files end up creating test targets that just throw errors.

[brocollie08]

when did the plugin numbers change? did we add some new default plugin?

[tmarmer]

Looks like AsyncHydrationTrackerPlugin was added to buildDefaultPlugins of AndroidPlayer (code) about 5 months ago. I assume that's what made the difference here.