Rendering tests unusable in ember-inspectors test suite

[rwjblue]

Currently, adding any tests that use the setupTest/setupRenderingTest/setupApplicationTest testing infrastructure causes those tests to "randomly" fail (due to timeout errors).

After digging into it a bit, the issue seems to be caused by using setApplication in tests/helpers/setup-destroy-ei-app.js. Calling setApplication there (and then running app.destroy) causes all subsequent @ember/test-helpers based tests to timeout (the application instance that you pass to setApplication is supposed to never be destroyed).

TODO:

• Ensure that requiring ember-debug/main eagerly does not cause knock on test failures (Ensure renderDebug is properly unregistered. #1202)
• Fix ability to run integration tests by ensuring setApplication call in setup-destroy-ei-app.js is reversed (Reset internal test helper state for EmberDebug tests. #1203)
• Refactor tests/helpers/setup-destroy-ei-app.js to use a newer setupInspectorTest(hooks) style API (Introduce setupEmberDebugTest test helper. #1204)

[rwjblue]

Just creating an issue to track progress...