Feature request - allow checking if activity is destroyed with ActivityScenario

[ferinagy]

Description

We have an activity that immediately finishes (in onCreate()) if it does not receive correct intent arguments. I have found no way to test this with ActivityScenario. With ActivityTestRule we could do something like this:

val rule = ActivityTestRule(ExampleActivity::class.java, false, false)
rule.launchActivity(null)
assert(rule.activity.isDestroyed)

With ActivityScenario, the ActivityScenario.getCurrentActivityState() and connected methods are private, so I had to try something like:

val scenario = ActivityScenario.launch(ExampleActivity::class.java)
scenario.onActivity { assert(it.isDestroyed) }

But it fails with

java.lang.NullPointerException: Cannot run onActivity since Activity has been destroyed already
at androidx.test.internal.util.Checks.checkNotNull(Checks.java:41)
at androidx.test.core.app.ActivityScenario.lambda$onActivity$1$ActivityScenario(ActivityScenario.java:531)
at androidx.test.core.app.ActivityScenario$$Lambda$0.run(Unknown Source:4)
at android.app.Instrumentation$SyncRunnable.run(Instrumentation.java:2163)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

It would be nice to provide a way to test use case like this. If you do not want to expose the getCurrentActivityState, maybe there could be at least something like ActivityScenario.isDestroyed()

AndroidX Test Versions

androidxTestMonitorVersion = '1.1.1'
androidxTestRulesVersion = '1.1.1'
androidxTestRunnerVersion = '1.1.1'
androidxTestJunitVersion = '1.1.0'