Dialog boxes are untestable on Compose Desktop

Problem

Using the Compose UI Testing library, we cannot test dialog boxes on Compose Desktop. The following example construct works on Android, but not on Desktop.

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")
            }
        }
    }
}

Expectation

Test passes. Content within dialog box is detected.

Actual Result

Test fails with the following error:

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)
...

Version Info

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

Links

Relevant Stackoverflow question (asked by me): https://stackoverflow.com/q/72507535/3477606.

[Mindstormer619]

Bumping this for attention. Can I at least have an idea of when/if this is planned to be fixed?

[jamesreprise]

I think this goes beyond dialog boxes, Windows of any kind can’t be ‘seen through’.

    @Test
    fun `compose test with a window`() {
        runComposeRule(composeRule) {
            setContent {
                Window({}) {
                    Row {
                        Text("Test.")
                    }
                }
            }
...
composeRule.onRoot(useUnmergedTree = true).printToString(5)

returns

Printing with useUnmergedTree = 'true'
Node #1 at (l=0.0, t=0.0, r=0.0, b=0.0)px

For comparison, removing the Window

    @Test
    fun `compose test without a window`() {
        runComposeRule(composeRule) {
            setContent {
                  Row {
                      Text("Test.")
                  }
            }
...
composeRule.onRoot(useUnmergedTree = true).printToString(5)

returns

Printing with useUnmergedTree = 'true'
Node #1 at (l=0.0, t=0.0, r=30.0, b=17.0)px
 |-Node #2 at (l=0.0, t=0.0, r=30.0, b=17.0)px
   Text = '[Test.]'
   Actions = [GetTextLayoutResult]

Is anyone aware whether end to end testing is workable by any means right now?