Dialog boxes cannot be tested in Jetpack Compose Desktop

Question

Problem

Dialog composables seem to be untestable in Jetpack Compose on the Desktop platform. Any action triggered from the test that adds a Dialog to the composition seems to immediately close the box again (when running the test, the dialog box itself actually opens for a brief second, which I don't expect to be happening), and the test fails to detect any element which is inside the dialog.

This does not happen on the actual production run -- we only see this problem in the tests. I have not tested this on other platforms, but (at least from the documentation) it seems to me that it works on Android.

Example Code

// Test Logic
    @Test
    fun `reproduce dialog test failure`() {
        ui(compose) {
            setContent {
                var isDialogOpen by remember { mutableStateOf(false) }
                DialogHolder(isDialogOpen) {v -> isDialogOpen = v}
            }

            onNodeWithText("Open").performClick()
            awaitIdle()

            onNodeWithText("Close").assertExists()
        }
    }
// --------------
@Composable fun DialogHolder(isDialogOpen: Boolean, updateDialog: (Boolean) -> Unit) {
    Button(onClick = { updateDialog(true) }) {
        Text("Open")
    }

    if (isDialogOpen) {
        Dialog(onCloseRequest = { updateDialog(false) }) {
            Button(onClick = { updateDialog(false) }) {
                Text("Close")
            }
        }
    }
}

Test Result

Failed: assertExists.
Reason: Expected exactly '1' node but could not find any node that satisfies: (Text + EditableText contains 'Close' (ignoreCase: false))

java.lang.AssertionError: Failed: assertExists.
Reason: Expected exactly '1' node but could not find any node that satisfies: (Text + EditableText contains 'Close' (ignoreCase: false))

    at androidx.compose.ui.test.SemanticsNodeInteraction.fetchOneOrDie(SemanticsNodeInteraction.kt:162)
    at androidx.compose.ui.test.SemanticsNodeInteraction.assertExists(SemanticsNodeInteraction.kt:137)
...

Screenshots (directly run from main())

Version Info

• Kotlin: 1.6.10
• Jetpack Compose: 1.1.1
• JVM Target: 11