[flexiglass] Bouncer throttling - composables.

Compose rendering logic for throttling input entry on the
bouncer when the user enters wrong input too many times.

Bug: 280877228
Test: unit tests
Test: manually verified in PIN, pattern, and password that entering the
wrong input 5, 10, 15, or any number above 15, times shows the
throttling dialog.
Test: manually verified that the throttling dialog cannot be dismissed
without touching its "Ok" button (tapping outside or hitting back don't
dismiss it)
Test: manually verified that input on the bouncer is disabled as the
message is showing the countdown for 30 seconds.
Test: manually verified that after the 30 second countdown, the input
is enabled again and entering the correct input unlocks Flexiglass.

Change-Id: I7f5b8b7e572c4fe00f3315ccb957f036ed9e8d29

packages/SystemUI/compose/facade/enabled/src/com/android/systemui/scene/ui/composable/SceneModule.kt

@@ -16,6 +16,7 @@
 
 package com.android.systemui.scene.ui.composable
 
+import android.content.Context
 import com.android.systemui.bouncer.ui.composable.BouncerScene
 import com.android.systemui.bouncer.ui.viewmodel.BouncerViewModel
 import com.android.systemui.dagger.SysUISingleton
@@ -28,6 +29,7 @@ import com.android.systemui.scene.shared.model.Scene
 import com.android.systemui.scene.shared.model.SceneContainerNames
 import com.android.systemui.shade.ui.composable.ShadeScene
 import com.android.systemui.shade.ui.viewmodel.ShadeSceneViewModel
+import com.android.systemui.statusbar.phone.SystemUIDialog
 import dagger.Module
 import dagger.Provides
 import javax.inject.Named
@@ -57,6 +59,7 @@ object SceneModule {
     @SysUISingleton
     @Named(SceneContainerNames.SYSTEM_UI_DEFAULT)
     fun bouncerScene(
+        @Application context: Context,
         viewModelFactory: BouncerViewModel.Factory,
     ): BouncerScene {
         return BouncerScene(
@@ -64,6 +67,7 @@ object SceneModule {
                 viewModelFactory.create(
                     containerName = SceneContainerNames.SYSTEM_UI_DEFAULT,
                 ),
+            dialogFactory = { SystemUIDialog(context) },
         )
     }
 

packages/SystemUI/compose/features/src/com/android/systemui/bouncer/ui/composable/BouncerScene.kt

@@ -14,9 +14,16 @@
  * limitations under the License.
  */
 
+@file:OptIn(ExperimentalMaterial3Api::class)
+
 package com.android.systemui.bouncer.ui.composable
 
+import android.app.AlertDialog
+import android.app.Dialog
+import android.content.DialogInterface
 import androidx.compose.animation.Crossfade
+import androidx.compose.animation.core.snap
+import androidx.compose.animation.core.tween
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
@@ -26,15 +33,20 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.padding
 import androidx.compose.material3.Button
 import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
+import com.android.systemui.R
 import com.android.systemui.bouncer.ui.viewmodel.AuthMethodBouncerViewModel
 import com.android.systemui.bouncer.ui.viewmodel.BouncerViewModel
 import com.android.systemui.bouncer.ui.viewmodel.PasswordBouncerViewModel
@@ -51,6 +63,7 @@ import kotlinx.coroutines.flow.asStateFlow
 /** The bouncer scene displays authentication challenges like PIN, password, or pattern. */
 class BouncerScene(
     private val viewModel: BouncerViewModel,
+    private val dialogFactory: () -> AlertDialog,
 ) : ComposableScene {
     override val key = SceneKey.Bouncer
 
@@ -68,16 +81,19 @@ class BouncerScene(
     override fun Content(
         containerName: String,
         modifier: Modifier,
-    ) = BouncerScene(viewModel, modifier)
+    ) = BouncerScene(viewModel, dialogFactory, modifier)
 }
 
 @Composable
 private fun BouncerScene(
     viewModel: BouncerViewModel,
+    dialogFactory: () -> AlertDialog,
     modifier: Modifier = Modifier,
 ) {
-    val message: String by viewModel.message.collectAsState()
+    val message: BouncerViewModel.MessageViewModel by viewModel.message.collectAsState()
     val authMethodViewModel: AuthMethodBouncerViewModel? by viewModel.authMethod.collectAsState()
+    val dialogMessage: String? by viewModel.throttlingDialogMessage.collectAsState()
+    var dialog: Dialog? by remember { mutableStateOf(null) }
 
     Column(
         horizontalAlignment = Alignment.CenterHorizontally,
@@ -88,9 +104,10 @@ private fun BouncerScene(
         Crossfade(
             targetState = message,
             label = "Bouncer message",
-        ) {
+            animationSpec = if (message.isUpdateAnimated) tween() else snap(),
+        ) { message ->
             Text(
-                text = it,
+                text = message.text,
                 color = MaterialTheme.colorScheme.onSurface,
                 style = MaterialTheme.typography.bodyLarge,
             )
@@ -132,5 +149,26 @@ private fun BouncerScene(
                 style = MaterialTheme.typography.bodyMedium,
             )
         }
+
+        if (dialogMessage != null) {
+            if (dialog == null) {
+                dialog =
+                    dialogFactory().apply {
+                        setMessage(dialogMessage)
+                        setButton(
+                            DialogInterface.BUTTON_NEUTRAL,
+                            context.getString(R.string.ok),
+                        ) { _, _ ->
+                            viewModel.onThrottlingDialogDismissed()
+                        }
+                        setCancelable(false)
+                        setCanceledOnTouchOutside(false)
+                        show()
+                    }
+            }
+        } else {
+            dialog?.dismiss()
+            dialog = null
+        }
     }
 }

packages/SystemUI/compose/features/src/com/android/systemui/bouncer/ui/composable/PasswordBouncer.kt

@@ -53,6 +53,7 @@ internal fun PasswordBouncer(
 ) {
     val focusRequester = remember { FocusRequester() }
     val password: String by viewModel.password.collectAsState()
+    val isInputEnabled: Boolean by viewModel.isInputEnabled.collectAsState()
 
     LaunchedEffect(Unit) {
         // When the UI comes up, request focus on the TextField to bring up the software keyboard.
@@ -71,6 +72,7 @@ internal fun PasswordBouncer(
         TextField(
             value = password,
             onValueChange = viewModel::onPasswordInputChanged,
+            enabled = isInputEnabled,
             visualTransformation = PasswordVisualTransformation(),
             singleLine = true,
             textStyle = LocalTextStyle.current.copy(textAlign = TextAlign.Center),

packages/SystemUI/compose/features/src/com/android/systemui/bouncer/ui/composable/PatternBouncer.kt

@@ -44,6 +44,7 @@ import androidx.compose.ui.unit.dp
 import com.android.internal.R
 import com.android.systemui.bouncer.ui.viewmodel.PatternBouncerViewModel
 import com.android.systemui.bouncer.ui.viewmodel.PatternDotViewModel
+import com.android.systemui.compose.modifiers.thenIf
 import kotlin.math.min
 import kotlin.math.pow
 import kotlin.math.sqrt
@@ -82,6 +83,8 @@ internal fun PatternBouncer(
     val currentDot: PatternDotViewModel? by viewModel.currentDot.collectAsState()
     // The dots selected so far, if the user is currently dragging.
     val selectedDots: List<PatternDotViewModel> by viewModel.selectedDots.collectAsState()
+    val isInputEnabled: Boolean by viewModel.isInputEnabled.collectAsState()
+    val isAnimationEnabled: Boolean by viewModel.isPatternVisible.collectAsState()
 
     // Map of animatables for the scale of each dot, keyed by dot.
     val dotScalingAnimatables = remember(dots) { dots.associateWith { Animatable(1f) } }
@@ -96,16 +99,24 @@ internal fun PatternBouncer(
     val view = LocalView.current
 
     // When the current dot is changed, we need to update our animations.
-    LaunchedEffect(currentDot) {
+    LaunchedEffect(currentDot, isAnimationEnabled) {
         view.performHapticFeedback(
             HapticFeedbackConstants.VIRTUAL_KEY,
             HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING,
         )
 
-        // Make sure that the current dot is scaled up while the other dots are scaled back down.
+        if (!isAnimationEnabled) {
+            return@LaunchedEffect
+        }
+
+        // Make sure that the current dot is scaled up while the other dots are scaled back
+        // down.
         dotScalingAnimatables.entries.forEach { (dot, animatable) ->
             val isSelected = dot == currentDot
-            launch {
+            // Launch using the longer-lived scope because we want these animations to proceed to
+            // completion even if the LaunchedEffect is canceled because its key objects have
+            // changed.
+            scope.launch {
                 animatable.animateTo(if (isSelected) 2f else 1f)
                 if (isSelected) {
                     animatable.animateTo(1f)
@@ -116,14 +127,18 @@ internal fun PatternBouncer(
         selectedDots.forEach { dot ->
             lineFadeOutAnimatables[dot]?.let { line ->
                 if (!line.isRunning) {
+                    // Launch using the longer-lived scope because we want these animations to
+                    // proceed to completion even if the LaunchedEffect is canceled because its key
+                    // objects have changed.
                     scope.launch {
                         if (dot == currentDot) {
-                            // Reset the fade-out animation for the current dot. When the current
-                            // dot is switched, this entire code block runs again for the newly
-                            // selected dot.
+                            // Reset the fade-out animation for the current dot. When the
+                            // current dot is switched, this entire code block runs again for
+                            // the newly selected dot.
                             line.snapTo(1f)
                         } else {
-                            // For all non-current dots, make sure that the lines are fading out.
+                            // For all non-current dots, make sure that the lines are fading
+                            // out.
                             line.animateTo(
                                 targetValue = 0f,
                                 animationSpec =
@@ -148,27 +163,34 @@ internal fun PatternBouncer(
             // when it leaves the bounds of the dot grid.
             .clipToBounds()
             .onSizeChanged { containerSize = it }
-            .pointerInput(Unit) {
-                detectDragGestures(
-                    onDragStart = { start ->
-                        inputPosition = start
-                        viewModel.onDragStart()
-                    },
-                    onDragEnd = {
-                        inputPosition = null
-                        lineFadeOutAnimatables.values.forEach { animatable ->
-                            scope.launch { animatable.animateTo(1f) }
-                        }
-                        viewModel.onDragEnd()
-                    },
-                ) { change, _ ->
-                    inputPosition = change.position
-                    viewModel.onDrag(
-                        xPx = change.position.x,
-                        yPx = change.position.y,
-                        containerSizePx = containerSize.width,
-                        verticalOffsetPx = verticalOffset,
-                    )
+            .thenIf(isInputEnabled) {
+                Modifier.pointerInput(Unit) {
+                    detectDragGestures(
+                        onDragStart = { start ->
+                            inputPosition = start
+                            viewModel.onDragStart()
+                        },
+                        onDragEnd = {
+                            inputPosition = null
+                            if (isAnimationEnabled) {
+                                lineFadeOutAnimatables.values.forEach { animatable ->
+                                    // Launch using the longer-lived scope because we want these
+                                    // animations to proceed to completion even if the surrounding
+                                    // scope is canceled.
+                                    scope.launch { animatable.animateTo(1f) }
+                                }
+                            }
+                            viewModel.onDragEnd()
+                        },
+                    ) { change, _ ->
+                        inputPosition = change.position
+                        viewModel.onDrag(
+                            xPx = change.position.x,
+                            yPx = change.position.y,
+                            containerSizePx = containerSize.width,
+                            verticalOffsetPx = verticalOffset,
+                        )
+                    }
                 }
             }
     ) {

packages/SystemUI/compose/features/src/com/android/systemui/bouncer/ui/composable/PinBouncer.kt

@@ -63,6 +63,7 @@ import com.android.systemui.bouncer.ui.viewmodel.PinBouncerViewModel
 import com.android.systemui.common.shared.model.ContentDescription
 import com.android.systemui.common.shared.model.Icon
 import com.android.systemui.common.ui.compose.Icon
+import com.android.systemui.compose.modifiers.thenIf
 import kotlin.math.max
 
 @Composable
@@ -75,6 +76,7 @@ internal fun PinBouncer(
 
     // The length of the PIN input received so far, so we know how many dots to render.
     val pinLength: Pair<Int, Int> by viewModel.pinLengths.collectAsState()
+    val isInputEnabled: Boolean by viewModel.isInputEnabled.collectAsState()
 
     Column(
         horizontalAlignment = Alignment.CenterHorizontally,
@@ -116,6 +118,7 @@ internal fun PinBouncer(
                 val digit = index + 1
                 PinButton(
                     onClicked = { viewModel.onPinButtonClicked(digit) },
+                    isEnabled = isInputEnabled,
                 ) { contentColor ->
                     PinDigit(digit, contentColor)
                 }
@@ -124,6 +127,7 @@ internal fun PinBouncer(
             PinButton(
                 onClicked = { viewModel.onBackspaceButtonClicked() },
                 onLongPressed = { viewModel.onBackspaceButtonLongPressed() },
+                isEnabled = isInputEnabled,
                 isHighlighted = true,
             ) { contentColor ->
                 PinIcon(
@@ -138,6 +142,7 @@ internal fun PinBouncer(
 
             PinButton(
                 onClicked = { viewModel.onPinButtonClicked(0) },
+                isEnabled = isInputEnabled,
             ) { contentColor ->
                 PinDigit(0, contentColor)
             }
@@ -145,6 +150,7 @@ internal fun PinBouncer(
             PinButton(
                 onClicked = { viewModel.onAuthenticateButtonClicked() },
                 isHighlighted = true,
+                isEnabled = isInputEnabled,
             ) { contentColor ->
                 PinIcon(
                     Icon.Resource(
@@ -187,6 +193,7 @@ private fun PinIcon(
 @Composable
 private fun PinButton(
     onClicked: () -> Unit,
+    isEnabled: Boolean,
     modifier: Modifier = Modifier,
     onLongPressed: (() -> Unit)? = null,
     isHighlighted: Boolean = false,
@@ -228,16 +235,18 @@ private fun PinButton(
                         cornerRadius = CornerRadius(cornerRadius.toPx()),
                     )
                 }
-                .pointerInput(Unit) {
-                    detectTapGestures(
-                        onPress = {
-                            isPressed = true
-                            tryAwaitRelease()
-                            isPressed = false
-                        },
-                        onTap = { onClicked() },
-                        onLongPress = onLongPressed?.let { { onLongPressed() } },
-                    )
+                .thenIf(isEnabled) {
+                    Modifier.pointerInput(Unit) {
+                        detectTapGestures(
+                            onPress = {
+                                isPressed = true
+                                tryAwaitRelease()
+                                isPressed = false
+                            },
+                            onTap = { onClicked() },
+                            onLongPress = onLongPressed?.let { { onLongPressed() } },
+                        )
+                    }
                 },
     ) {
         content(contentColor)

packages/SystemUI/src/com/android/systemui/bouncer/ui/viewmodel/BouncerViewModel.kt

@@ -20,6 +20,7 @@ import android.content.Context
 import com.android.systemui.R
 import com.android.systemui.authentication.shared.model.AuthenticationMethodModel
 import com.android.systemui.bouncer.domain.interactor.BouncerInteractor
+import com.android.systemui.bouncer.shared.model.AuthenticationThrottledModel
 import com.android.systemui.dagger.qualifiers.Application
 import dagger.assisted.Assisted
 import dagger.assisted.AssistedFactory
@@ -29,6 +30,7 @@ import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.stateIn
@@ -45,21 +47,6 @@ constructor(
 ) {
     private val interactor: BouncerInteractor = interactorFactory.create(containerName)
 
-    /**
-     * Whether updates to the message should be cross-animated from one message to another.
-     *
-     * If `false`, no animation should be applied, the message text should just be replaced
-     * instantly.
-     */
-    val isMessageUpdateAnimationsEnabled: StateFlow<Boolean> =
-        interactor.throttling
-            .map { it == null }
-            .stateIn(
-                scope = applicationScope,
-                started = SharingStarted.WhileSubscribed(),
-                initialValue = interactor.throttling.value == null,
-            )
-
     private val isInputEnabled: StateFlow<Boolean> =
         interactor.throttling
             .map { it == null }
@@ -104,13 +91,21 @@ constructor(
             )
 
     /** The user-facing message to show in the bouncer. */
-    val message: StateFlow<String> =
-        interactor.message
-            .map { it ?: "" }
+    val message: StateFlow<MessageViewModel> =
+        combine(
+                interactor.message,
+                interactor.throttling,
+            ) { message, throttling ->
+                toMessageViewModel(message, throttling)
+            }
             .stateIn(
                 scope = applicationScope,
                 started = SharingStarted.WhileSubscribed(),
-                initialValue = interactor.message.value ?: "",
+                initialValue =
+                    toMessageViewModel(
+                        message = interactor.message.value,
+                        throttling = interactor.throttling.value,
+                    ),
             )
 
     private val _throttlingDialogMessage = MutableStateFlow<String?>(null)
@@ -177,6 +172,28 @@ constructor(
         }
     }
 
+    private fun toMessageViewModel(
+        message: String?,
+        throttling: AuthenticationThrottledModel?,
+    ): MessageViewModel {
+        return MessageViewModel(
+            text = message ?: "",
+            isUpdateAnimated = throttling == null,
+        )
+    }
+
+    data class MessageViewModel(
+        val text: String,
+
+        /**
+         * Whether updates to the message should be cross-animated from one message to another.
+         *
+         * If `false`, no animation should be applied, the message text should just be replaced
+         * instantly.
+         */
+        val isUpdateAnimated: Boolean,
+    )
+
     @AssistedFactory
     interface Factory {
         fun create(

packages/SystemUI/tests/src/com/android/systemui/bouncer/ui/viewmodel/BouncerViewModelTest.kt

@@ -93,22 +93,21 @@ class BouncerViewModelTest : SysuiTestCase() {
     }
 
     @Test
-    fun isMessageUpdateAnimationsEnabled() =
+    fun message() =
         testScope.runTest {
-            val isMessageUpdateAnimationsEnabled by
-                collectLastValue(underTest.isMessageUpdateAnimationsEnabled)
+            val message by collectLastValue(underTest.message)
             val throttling by collectLastValue(bouncerInteractor.throttling)
             authenticationInteractor.setAuthenticationMethod(AuthenticationMethodModel.PIN(1234))
-            assertThat(isMessageUpdateAnimationsEnabled).isTrue()
+            assertThat(message?.isUpdateAnimated).isTrue()
 
             repeat(BouncerInteractor.THROTTLE_EVERY) {
                 // Wrong PIN.
                 bouncerInteractor.authenticate(listOf(3, 4, 5, 6))
             }
-            assertThat(isMessageUpdateAnimationsEnabled).isFalse()
+            assertThat(message?.isUpdateAnimated).isFalse()
 
             throttling?.totalDurationSec?.let { seconds -> advanceTimeBy(seconds * 1000L) }
-            assertThat(isMessageUpdateAnimationsEnabled).isTrue()
+            assertThat(message?.isUpdateAnimated).isTrue()
         }
 
     @Test

packages/SystemUI/tests/src/com/android/systemui/bouncer/ui/viewmodel/PasswordBouncerViewModelTest.kt

@@ -85,7 +85,7 @@ class PasswordBouncerViewModelTest : SysuiTestCase() {
 
             underTest.onShown()
 
-            assertThat(message).isEqualTo(ENTER_YOUR_PASSWORD)
+            assertThat(message?.text).isEqualTo(ENTER_YOUR_PASSWORD)
             assertThat(password).isEqualTo("")
             assertThat(isUnlocked).isFalse()
             assertThat(currentScene).isEqualTo(SceneModel(SceneKey.Bouncer))
@@ -109,7 +109,7 @@ class PasswordBouncerViewModelTest : SysuiTestCase() {
 
             underTest.onPasswordInputChanged("password")
 
-            assertThat(message).isEmpty()
+            assertThat(message?.text).isEmpty()
             assertThat(password).isEqualTo("password")
             assertThat(isUnlocked).isFalse()
             assertThat(currentScene).isEqualTo(SceneModel(SceneKey.Bouncer))
@@ -156,7 +156,7 @@ class PasswordBouncerViewModelTest : SysuiTestCase() {
             underTest.onAuthenticateKeyPressed()
 
             assertThat(password).isEqualTo("")
-            assertThat(message).isEqualTo(WRONG_PASSWORD)
+            assertThat(message?.text).isEqualTo(WRONG_PASSWORD)
             assertThat(isUnlocked).isFalse()
             assertThat(currentScene).isEqualTo(SceneModel(SceneKey.Bouncer))
         }
@@ -179,13 +179,13 @@ class PasswordBouncerViewModelTest : SysuiTestCase() {
             underTest.onPasswordInputChanged("wrong")
             underTest.onAuthenticateKeyPressed()
             assertThat(password).isEqualTo("")
-            assertThat(message).isEqualTo(WRONG_PASSWORD)
+            assertThat(message?.text).isEqualTo(WRONG_PASSWORD)
             assertThat(isUnlocked).isFalse()
             assertThat(currentScene).isEqualTo(SceneModel(SceneKey.Bouncer))
 
             // Enter the correct password:
             underTest.onPasswordInputChanged("password")
-            assertThat(message).isEmpty()
+            assertThat(message?.text).isEmpty()
 
             underTest.onAuthenticateKeyPressed()
 

packages/SystemUI/tests/src/com/android/systemui/bouncer/ui/viewmodel/PatternBouncerViewModelTest.kt

@@ -89,7 +89,7 @@ class PatternBouncerViewModelTest : SysuiTestCase() {
 
             underTest.onShown()
 
-            assertThat(message).isEqualTo(ENTER_YOUR_PATTERN)
+            assertThat(message?.text).isEqualTo(ENTER_YOUR_PATTERN)
             assertThat(selectedDots).isEmpty()
             assertThat(currentDot).isNull()
             assertThat(isUnlocked).isFalse()
@@ -115,7 +115,7 @@ class PatternBouncerViewModelTest : SysuiTestCase() {
 
             underTest.onDragStart()
 
-            assertThat(message).isEmpty()
+            assertThat(message?.text).isEmpty()
             assertThat(selectedDots).isEmpty()
             assertThat(currentDot).isNull()
             assertThat(isUnlocked).isFalse()
@@ -202,7 +202,7 @@ class PatternBouncerViewModelTest : SysuiTestCase() {
 
             assertThat(selectedDots).isEmpty()
             assertThat(currentDot).isNull()
-            assertThat(message).isEqualTo(WRONG_PATTERN)
+            assertThat(message?.text).isEqualTo(WRONG_PATTERN)
             assertThat(isUnlocked).isFalse()
             assertThat(currentScene).isEqualTo(SceneModel(SceneKey.Bouncer))
         }
@@ -235,7 +235,7 @@ class PatternBouncerViewModelTest : SysuiTestCase() {
             underTest.onDragEnd()
             assertThat(selectedDots).isEmpty()
             assertThat(currentDot).isNull()
-            assertThat(message).isEqualTo(WRONG_PATTERN)
+            assertThat(message?.text).isEqualTo(WRONG_PATTERN)
             assertThat(isUnlocked).isFalse()
             assertThat(currentScene).isEqualTo(SceneModel(SceneKey.Bouncer))
 

packages/SystemUI/tests/src/com/android/systemui/bouncer/ui/viewmodel/PinBouncerViewModelTest.kt

@@ -94,7 +94,7 @@ class PinBouncerViewModelTest : SysuiTestCase() {
 
             underTest.onShown()
 
-            assertThat(message).isEqualTo(ENTER_YOUR_PIN)
+            assertThat(message?.text).isEqualTo(ENTER_YOUR_PIN)
             assertThat(pinLengths).isEqualTo(0 to 0)
             assertThat(isUnlocked).isFalse()
             assertThat(currentScene).isEqualTo(SceneModel(SceneKey.Bouncer))
@@ -116,7 +116,7 @@ class PinBouncerViewModelTest : SysuiTestCase() {
 
             underTest.onPinButtonClicked(1)
 
-            assertThat(message).isEmpty()
+            assertThat(message?.text).isEmpty()
             assertThat(pinLengths).isEqualTo(0 to 1)
             assertThat(isUnlocked).isFalse()
             assertThat(currentScene).isEqualTo(SceneModel(SceneKey.Bouncer))
@@ -140,7 +140,7 @@ class PinBouncerViewModelTest : SysuiTestCase() {
 
             underTest.onBackspaceButtonClicked()
 
-            assertThat(message).isEmpty()
+            assertThat(message?.text).isEmpty()
             assertThat(pinLengths).isEqualTo(1 to 0)
             assertThat(isUnlocked).isFalse()
             assertThat(currentScene).isEqualTo(SceneModel(SceneKey.Bouncer))
@@ -170,7 +170,7 @@ class PinBouncerViewModelTest : SysuiTestCase() {
                 advanceTimeBy(PinBouncerViewModel.BACKSPACE_LONG_PRESS_DELAY_MS)
             }
 
-            assertThat(message).isEmpty()
+            assertThat(message?.text).isEmpty()
             assertThat(pinLengths).isEqualTo(1 to 0)
             assertThat(isUnlocked).isFalse()
             assertThat(currentScene).isEqualTo(SceneModel(SceneKey.Bouncer))
@@ -220,7 +220,7 @@ class PinBouncerViewModelTest : SysuiTestCase() {
             underTest.onAuthenticateButtonClicked()
 
             assertThat(pinLengths).isEqualTo(0 to 0)
-            assertThat(message).isEqualTo(WRONG_PIN)
+            assertThat(message?.text).isEqualTo(WRONG_PIN)
             assertThat(isUnlocked).isFalse()
             assertThat(currentScene).isEqualTo(SceneModel(SceneKey.Bouncer))
         }
@@ -244,7 +244,7 @@ class PinBouncerViewModelTest : SysuiTestCase() {
             underTest.onPinButtonClicked(4)
             underTest.onPinButtonClicked(5) // PIN is now wrong!
             underTest.onAuthenticateButtonClicked()
-            assertThat(message).isEqualTo(WRONG_PIN)
+            assertThat(message?.text).isEqualTo(WRONG_PIN)
             assertThat(pinLengths).isEqualTo(0 to 0)
             assertThat(isUnlocked).isFalse()
             assertThat(currentScene).isEqualTo(SceneModel(SceneKey.Bouncer))
@@ -254,7 +254,7 @@ class PinBouncerViewModelTest : SysuiTestCase() {
             underTest.onPinButtonClicked(2)
             underTest.onPinButtonClicked(3)
             underTest.onPinButtonClicked(4)
-            assertThat(message).isEmpty()
+            assertThat(message?.text).isEmpty()
 
             underTest.onAuthenticateButtonClicked()