Launching Activity with extra attached to Intent in Instrumented test, running on espresso and JUnit 5

Question

I'd like to launch my ActivityScenarioExtension with an extra attached to the startActivityIntent. The extra-less scenario extension launching, which works just as intended, I carry out via

internal class TestMainActivity{
    @JvmField
    @RegisterExtension
    val scenarioExtension = ActivityScenarioExtension.launch<MainActivity>()

    @BeforeEach
    fun recreateActivity(scenario: ActivityScenario<MainActivity>){
        scenario.recreate()
    }
}

, however I'm not sure as to how to add in the required extra.

Not having found any real reference addressing how to achieve that, I simply tried

@JvmField
@RegisterExtension
val scenarioExtension = ActivityScenarioExtension.launch<MainActivity>(
    Intent().putParcelableArrayListExtra("CROP_URIS", ArrayList())
)

, which however led to

java.lang.RuntimeException: Unable to resolve activity for: Intent { (has extras) }
at androidx.test.core.app.InstrumentationActivityInvoker.startActivity(InstrumentationActivityInvoker.java:402)
at androidx.test.core.app.InstrumentationActivityInvoker.startActivity(InstrumentationActivityInvoker.java:437)
at androidx.test.core.app.ActivityScenario.launchInternal(ActivityScenario.java:265)
at androidx.test.core.app.ActivityScenario.launch(ActivityScenario.java:226)
at de.mannodermaus.junit5.ActivityScenarioExtension$Companion$launch$2.invoke(ActivityScenarioExtension.kt:130)
at de.mannodermaus.junit5.ActivityScenarioExtension$Companion$launch$2.invoke(ActivityScenarioExtension.kt:130)
at de.mannodermaus.junit5.ActivityScenarioExtension.beforeEach(ActivityScenarioExtension.kt:156)

The implementation propositions exclusively concerning JUnit 4 in turn, I've found in Espresso startActivity that depends on Intent, I didn't quite manage to transfer into the realm of JUnit 5 and its newly introduced Extension model.

Thanks in advance for whatever kind of help.

Answer 1

Try this:

private val intent = Intent(ApplicationProvider.getApplicationContext(), MainActivity::class.java).apply {
    putParcelableArrayListExtra("CROP_URIS", ArrayList())
}

@Rule
@JvmField
val activity = ActivityScenarioRule<MainActivity>(intent)