Compose Desktop render to png test

ComposeTest.kt

fun main() {
    val window = TestComposeWindow(width = 1024, height = 300)
    window.setContent {
        MainUi()
    }
    File(Paths.get("").toAbsolutePath().toString()).writeBytes(window.surface.makeImageSnapshot().encodeToData()!!.bytes)
}

@Composable
fun MainUi() {
    MaterialTheme {
        Surface(
            modifier = Modifier.fillMaxSize(),
            color = Color.Transparent
        ) {
            Column {
                Button({}) { Text("Test 1") }
                Button({})  { Text("Test 2") }
                Button({}) { Text("Test 3") }
            }
        }
    }
}

output.md