IssueTracker

This is a follow-up to issue 199631334, where a new example is introduced in the docs how Fragments that include ComposeViews can be tested with AndroidComposeTestRule.

Given that certain types of UI (e.g. BottomSheets) do not derive from androidx.app.fragment.Fragment, but androidx.app.fragment.DialogFragment, the following code should work:

@RunWith(RobolectricTestRunner::class)
internal class ComposeInFragmentTest {
    @get:Rule
    val rule = createEmptyComposeRule()

    @Test
    fun test() {
        launchFragment<CustomDialogFragment>()
        rule.onNodeWithText("Hello Compose").assertExists()
    }

    class CustomDialogFragment : DialogFragment() {
        override fun onCreateView(
            inflater: LayoutInflater,
            container: ViewGroup?,
            savedInstanceState: Bundle?
        ): View? {
            return container?.let {
                ComposeView(container.context).apply {
                    layoutParams = ViewGroup.LayoutParams(MATCH_PARENT, MATCH_PARENT)
                }
            }
        }

        override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
            (view as ComposeView).setContent {
                Text("Hello Compose")
            }
        }
    }
}

However, on runtime I get

No compose views found in the app. Is your Activity resumed?
java.lang.IllegalStateException: No compose views found in the app. Is your Activity resumed?
	at androidx.compose.ui.test.TestContext.getAllSemanticsNodes$ui_test_release(TestOwner.kt:96)
	at androidx.compose.ui.test.SemanticsNodeInteraction.fetchSemanticsNodes$ui_test_release(SemanticsNodeInteraction.kt:82)
	at androidx.compose.ui.test.SemanticsNodeInteraction.fetchOneOrDie(SemanticsNodeInteraction.kt:155)
	at androidx.compose.ui.test.SemanticsNodeInteraction.assertExists(SemanticsNodeInteraction.kt:147)
	at androidx.compose.ui.test.SemanticsNodeInteraction.assertExists$default(SemanticsNodeInteraction.kt:146)

Tested with

• androidx.fragment:fragment-testing:1.3.6
• org.robolectric:robolectric:4.7.3
• androidx.compose.ui:ui-test:1.0.5