Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit ea44040c authored by Juan Sebastian Martinez's avatar Juan Sebastian Martinez
Browse files

Adding MSDL feedback to Compose Bouncers. 

Haptic feedback from the Multi-sensory Design Language (MSDL) is added
to the pin bouncer and the pattern bouncer. Interactions with new
haptics include taps on pin bouncer keys, dragging over dots in the
pattern bouncer, and unlocking and failure haptics when authentication
is resolved.

Test: atest PatternBouncerViewModelTest
Test: atest PinBouncerViewModelTest
Test: atest AuthMethodBouncerViewModelTest
Flag: com.android.systemui.msdl_feedback
Bug: 364953411

Change-Id: Icd47ddf61e401899cc4b1faae1d3eac478a94dee
parent 08d832de

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

+6 −18
Original line number Diff line number Diff line
@@ -16,7 +16,6 @@ 


package com.android.systemui.bouncer.ui.composable



import android.view.HapticFeedbackConstants

import androidx.annotation.VisibleForTesting

import androidx.compose.animation.core.Animatable

import androidx.compose.animation.core.AnimationVector1D
@@ -133,10 +132,7 @@ fun PatternBouncer( 
        // Perform haptic feedback, but only if the current dot is not null, so we don't perform it

        // when the UI first shows up or when the user lifts their pointer/finger.

        if (currentDot != null) {

            view.performHapticFeedback(

                HapticFeedbackConstants.VIRTUAL_KEY,

                HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING,

            )

            viewModel.performDotFeedback(view)

        }



        if (!isAnimationEnabled) {
@@ -206,10 +202,7 @@ fun PatternBouncer( 
    // Show the failure animation if the user entered the wrong input.

    LaunchedEffect(animateFailure) {

        if (animateFailure) {

            showFailureAnimation(

                dots = dots,

                scalingAnimatables = dotScalingAnimatables,

            )

            showFailureAnimation(dots = dots, scalingAnimatables = dotScalingAnimatables)

            viewModel.onFailureAnimationShown()

        }

    }
@@ -358,15 +351,10 @@ fun PatternBouncer( 
                    (1 - checkNotNull(dotAppearMoveUpAnimatables[dot]).value) * initialOffset

                drawCircle(

                    center =

                        pixelOffset(

                            dot,

                            spacing,

                            horizontalOffset,

                            verticalOffset + appearOffset,

                        ),

                        pixelOffset(dot, spacing, horizontalOffset, verticalOffset + appearOffset),

                    color =

                        dotColor.copy(alpha = checkNotNull(dotAppearFadeInAnimatables[dot]).value),

                    radius = dotRadius * checkNotNull(dotScalingAnimatables[dot]).value

                    radius = dotRadius * checkNotNull(dotScalingAnimatables[dot]).value,

                )

            }

        }
@@ -387,7 +375,7 @@ private suspend fun showEntryAnimation( 
                            delayMillis = 33 * dot.y,

                            durationMillis = 450,

                            easing = Easings.LegacyDecelerate,

                        )

                        ),

                )

            }

        }
@@ -400,7 +388,7 @@ private suspend fun showEntryAnimation( 
                            delayMillis = 0,

                            durationMillis = 450 + (33 * dot.y),

                            easing = Easings.StandardDecelerate,

                        )

                        ),

                )

            }

        }

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

+21 −39
Original line number Diff line number Diff line
@@ -16,8 +16,8 @@ 


package com.android.systemui.bouncer.ui.composable



import android.view.HapticFeedbackConstants

import android.view.MotionEvent

import android.view.View

import androidx.compose.animation.animateColorAsState

import androidx.compose.animation.core.Animatable

import androidx.compose.animation.core.AnimationSpec
@@ -72,11 +72,7 @@ import kotlinx.coroutines.launch 


/** Renders the PIN button pad. */

@Composable

fun PinPad(

    viewModel: PinBouncerViewModel,

    verticalSpacing: Dp,

    modifier: Modifier = Modifier,

) {

fun PinPad(viewModel: PinBouncerViewModel, verticalSpacing: Dp, modifier: Modifier = Modifier) {

    DisposableEffect(Unit) { onDispose { viewModel.onHidden() } }



    val isInputEnabled: Boolean by viewModel.isInputEnabled.collectAsStateWithLifecycle()
@@ -104,7 +100,7 @@ fun PinPad( 
        columns = columns,

        verticalSpacing = verticalSpacing,

        horizontalSpacing = calculateHorizontalSpacingBetweenColumns(gridWidth = 300.dp),

        modifier = modifier.focusRequester(focusRequester).sysuiResTag("pin_pad_grid")

        modifier = modifier.focusRequester(focusRequester).sysuiResTag("pin_pad_grid"),

    ) {

        repeat(9) { index ->

            DigitButton(
@@ -126,10 +122,11 @@ fun PinPad( 
                ),

            isInputEnabled = isInputEnabled,

            onClicked = viewModel::onBackspaceButtonClicked,

            onPointerDown = viewModel::onBackspaceButtonPressed,

            onLongPressed = viewModel::onBackspaceButtonLongPressed,

            appearance = backspaceButtonAppearance,

            scaling = buttonScaleAnimatables[9]::value,

            elementId = "delete_button"

            elementId = "delete_button",

        )



        DigitButton(
@@ -138,7 +135,7 @@ fun PinPad( 
            onClicked = viewModel::onPinButtonClicked,

            scaling = buttonScaleAnimatables[10]::value,

            isAnimationEnabled = isDigitButtonAnimationEnabled,

            onPointerDown = viewModel::onDigitButtonDown

            onPointerDown = viewModel::onDigitButtonDown,

        )



        ActionButton(
@@ -152,7 +149,7 @@ fun PinPad( 
            onClicked = viewModel::onAuthenticateButtonClicked,

            appearance = confirmButtonAppearance,

            scaling = buttonScaleAnimatables[11]::value,

            elementId = "key_enter"

            elementId = "key_enter",

        )

    }

}
@@ -162,7 +159,7 @@ private fun DigitButton( 
    digit: Int,

    isInputEnabled: Boolean,

    onClicked: (Int) -> Unit,

    onPointerDown: () -> Unit,

    onPointerDown: (View?) -> Unit,

    scaling: () -> Float,

    isAnimationEnabled: Boolean,

) {
@@ -178,7 +175,7 @@ private fun DigitButton( 
                val scale = if (isAnimationEnabled) scaling() else 1f

                scaleX = scale

                scaleY = scale

            }

            },

    ) { contentColor ->

        // TODO(b/281878426): once "color: () -> Color" (added to BasicText in aosp/2568972) makes

        // it into Text, use that here, to animate more efficiently.
@@ -197,6 +194,7 @@ private fun ActionButton( 
    onClicked: () -> Unit,

    elementId: String,

    onLongPressed: (() -> Unit)? = null,

    onPointerDown: ((View?) -> Unit)? = null,

    appearance: ActionButtonAppearance,

    scaling: () -> Float,

) {
@@ -222,18 +220,16 @@ private fun ActionButton( 
        foregroundColor = foregroundColor,

        isAnimationEnabled = true,

        elementId = elementId,

        onPointerDown = onPointerDown,

        modifier =

            Modifier.graphicsLayer {

                alpha = hiddenAlpha

                val scale = scaling()

                scaleX = scale

                scaleY = scale

            }

            },

    ) { contentColor ->

        Icon(

            icon = icon,

            tint = contentColor(),

        )

        Icon(icon = icon, tint = contentColor())

    }

}
@@ -247,22 +243,13 @@ private fun PinPadButton( 
    modifier: Modifier = Modifier,

    elementId: String? = null,

    onLongPressed: (() -> Unit)? = null,

    onPointerDown: (() -> Unit)? = null,

    onPointerDown: ((View?) -> Unit)? = null,

    content: @Composable (contentColor: () -> Color) -> Unit,

) {

    val interactionSource = remember { MutableInteractionSource() }

    val isPressed by interactionSource.collectIsPressedAsState()

    val indication = LocalIndication.current.takeUnless { isPressed }



    val view = LocalView.current

    LaunchedEffect(isPressed) {

        if (isPressed) {

            view.performHapticFeedback(

                HapticFeedbackConstants.VIRTUAL_KEY,

                HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING,

            )

        }

    }



    // Pin button animation specification is asymmetric: fast animation to the pressed state, and a

    // slow animation upon release. Note that isPressed is guaranteed to be true for at least the
@@ -277,7 +264,7 @@ private fun PinPadButton( 
        animateDpAsState(

            if (isAnimationEnabled && isPressed) 24.dp else pinButtonMaxSize / 2,

            label = "PinButton round corners",

            animationSpec = tween(animDurationMillis, easing = animEasing)

            animationSpec = tween(animDurationMillis, easing = animEasing),

        )

    val colorAnimationSpec: AnimationSpec<Color> = tween(animDurationMillis, easing = animEasing)

    val containerColor: Color by
@@ -287,7 +274,7 @@ private fun PinPadButton( 
                else -> backgroundColor

            },

            label = "Pin button container color",

            animationSpec = colorAnimationSpec

            animationSpec = colorAnimationSpec,

        )

    val contentColor =

        animateColorAsState(
@@ -296,7 +283,7 @@ private fun PinPadButton( 
                else -> foregroundColor

            },

            label = "Pin button container color",

            animationSpec = colorAnimationSpec

            animationSpec = colorAnimationSpec,

        )



    Box(
@@ -319,11 +306,11 @@ private fun PinPadButton( 
                            interactionSource = interactionSource,

                            indication = indication,

                            onClick = onClicked,

                            onLongClick = onLongPressed

                            onLongClick = onLongPressed,

                        )

                        .pointerInteropFilter { motionEvent ->

                            if (motionEvent.action == MotionEvent.ACTION_DOWN) {

                                onPointerDown?.let { it() }

                                onPointerDown?.let { it(view) }

                            }

                            false

                        }
@@ -353,10 +340,7 @@ private suspend fun showFailureAnimation( 
                animatable.animateTo(

                    targetValue = 1f,

                    animationSpec =

                        tween(

                            durationMillis = pinButtonErrorRevertMs,

                            easing = Easings.Legacy,

                        ),

                        tween(durationMillis = pinButtonErrorRevertMs, easing = Easings.Legacy),

                )

            }

        }
@@ -364,9 +348,7 @@ private suspend fun showFailureAnimation( 
}



/** Returns the amount of horizontal spacing between columns, in dips. */

private fun calculateHorizontalSpacingBetweenColumns(

    gridWidth: Dp,

): Dp {

private fun calculateHorizontalSpacingBetweenColumns(gridWidth: Dp): Dp {

    return (gridWidth - (pinButtonMaxSize * columns)) / (columns - 1)

}

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

+50 −0
Original line number Diff line number Diff line
@@ -16,18 +16,26 @@ 


package com.android.systemui.bouncer.ui.viewmodel



import android.platform.test.annotations.EnableFlags

import androidx.test.ext.junit.runners.AndroidJUnit4

import androidx.test.filters.SmallTest

import com.android.keyguard.AuthInteractionProperties

import com.android.systemui.Flags

import com.android.systemui.SysuiTestCase

import com.android.systemui.authentication.data.repository.FakeAuthenticationRepository

import com.android.systemui.authentication.data.repository.fakeAuthenticationRepository

import com.android.systemui.authentication.shared.model.AuthenticationMethodModel

import com.android.systemui.coroutines.collectLastValue

import com.android.systemui.haptics.msdl.bouncerHapticPlayer

import com.android.systemui.haptics.msdl.fakeMSDLPlayer

import com.android.systemui.kosmos.testScope

import com.android.systemui.lifecycle.activateIn

import com.android.systemui.testKosmos

import com.google.android.msdl.data.model.MSDLToken

import com.google.common.truth.Truth.assertThat

import kotlinx.coroutines.ExperimentalCoroutinesApi

import kotlinx.coroutines.flow.MutableStateFlow

import kotlinx.coroutines.test.runCurrent

import kotlinx.coroutines.test.runTest

import org.junit.Before

import org.junit.Test
@@ -39,11 +47,15 @@ class AuthMethodBouncerViewModelTest : SysuiTestCase() { 


    private val kosmos = testKosmos()

    private val testScope = kosmos.testScope

    private val msdlPlayer = kosmos.fakeMSDLPlayer

    private val bouncerHapticPlayer = kosmos.bouncerHapticPlayer

    private val authInteractionProperties = AuthInteractionProperties()

    private val underTest =

        kosmos.pinBouncerViewModelFactory.create(

            isInputEnabled = MutableStateFlow(true),

            onIntentionalUserInput = {},

            authenticationMethod = AuthenticationMethodModel.Pin,

            bouncerHapticPlayer = bouncerHapticPlayer,

        )



    @Before
@@ -77,4 +89,42 @@ class AuthMethodBouncerViewModelTest : SysuiTestCase() { 
            underTest.onAuthenticateButtonClicked()

            assertThat(animateFailure).isFalse()

        }



    @OptIn(ExperimentalCoroutinesApi::class)

    @Test

    @EnableFlags(Flags.FLAG_MSDL_FEEDBACK)

    fun onAuthenticationResult_playUnlockTokenIfSuccessful() =

        testScope.runTest {

            kosmos.fakeAuthenticationRepository.setAuthenticationMethod(

                AuthenticationMethodModel.Pin

            )

            // Correct PIN:

            FakeAuthenticationRepository.DEFAULT_PIN.forEach { digit ->

                underTest.onPinButtonClicked(digit)

            }

            underTest.onAuthenticateButtonClicked()

            runCurrent()



            assertThat(msdlPlayer.latestTokenPlayed).isEqualTo(MSDLToken.UNLOCK)

            assertThat(msdlPlayer.latestPropertiesPlayed).isEqualTo(authInteractionProperties)

        }



    @OptIn(ExperimentalCoroutinesApi::class)

    @Test

    @EnableFlags(Flags.FLAG_MSDL_FEEDBACK)

    fun onAuthenticationResult_playFailureTokenIfFailure() =

        testScope.runTest {

            kosmos.fakeAuthenticationRepository.setAuthenticationMethod(

                AuthenticationMethodModel.Pin

            )

            // Wrong PIN:

            FakeAuthenticationRepository.DEFAULT_PIN.drop(2).forEach { digit ->

                underTest.onPinButtonClicked(digit)

            }

            underTest.onAuthenticateButtonClicked()

            runCurrent()



            assertThat(msdlPlayer.latestTokenPlayed).isEqualTo(MSDLToken.FAILURE)

            assertThat(msdlPlayer.latestPropertiesPlayed).isEqualTo(authInteractionProperties)

        }

}

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

+24 −11
Original line number Diff line number Diff line
@@ -16,9 +16,11 @@ 


package com.android.systemui.bouncer.ui.viewmodel



import android.platform.test.annotations.EnableFlags

import androidx.test.ext.junit.runners.AndroidJUnit4

import androidx.test.filters.SmallTest

import com.android.compose.animation.scene.SceneKey

import com.android.systemui.Flags

import com.android.systemui.SysuiTestCase

import com.android.systemui.authentication.data.repository.FakeAuthenticationRepository

import com.android.systemui.authentication.data.repository.authenticationRepository
@@ -27,12 +29,16 @@ import com.android.systemui.authentication.domain.interactor.authenticationInter 
import com.android.systemui.authentication.shared.model.AuthenticationMethodModel

import com.android.systemui.authentication.shared.model.AuthenticationPatternCoordinate as Point

import com.android.systemui.coroutines.collectLastValue

import com.android.systemui.haptics.msdl.FakeMSDLPlayer

import com.android.systemui.haptics.msdl.bouncerHapticPlayer

import com.android.systemui.haptics.msdl.fakeMSDLPlayer

import com.android.systemui.kosmos.testScope

import com.android.systemui.lifecycle.activateIn

import com.android.systemui.res.R

import com.android.systemui.scene.domain.interactor.sceneInteractor

import com.android.systemui.scene.shared.model.Scenes

import com.android.systemui.testKosmos

import com.google.android.msdl.data.model.MSDLToken

import com.google.common.truth.Truth.assertThat

import com.google.common.truth.Truth.assertWithMessage

import kotlinx.coroutines.ExperimentalCoroutinesApi
@@ -55,10 +61,13 @@ class PatternBouncerViewModelTest : SysuiTestCase() { 
    private val authenticationInteractor by lazy { kosmos.authenticationInteractor }

    private val sceneInteractor by lazy { kosmos.sceneInteractor }

    private val bouncerViewModel by lazy { kosmos.bouncerSceneContentViewModel }

    private val msdlPlayer: FakeMSDLPlayer = kosmos.fakeMSDLPlayer

    private val bouncerHapticHelper = kosmos.bouncerHapticPlayer

    private val underTest =

        kosmos.patternBouncerViewModelFactory.create(

            isInputEnabled = MutableStateFlow(true).asStateFlow(),

            onIntentionalUserInput = {},

            bouncerHapticPlayer = bouncerHapticHelper,

        )



    private val containerSize = 90 // px
@@ -115,10 +124,7 @@ class PatternBouncerViewModelTest : SysuiTestCase() { 
                    .that(selectedDots)

                    .isEqualTo(

                        CORRECT_PATTERN.subList(0, index + 1).map {

                            PatternDotViewModel(

                                x = it.x,

                                y = it.y,

                            )

                            PatternDotViewModel(x = it.x, y = it.y)

                        }

                    )

                assertWithMessage("Wrong current dot for index $index")
@@ -174,7 +180,7 @@ class PatternBouncerViewModelTest : SysuiTestCase() { 
                    listOf(

                        PatternDotViewModel(0, 0),

                        PatternDotViewModel(1, 0),

                        PatternDotViewModel(2, 0)

                        PatternDotViewModel(2, 0),

                    )

                )

        }
@@ -200,7 +206,7 @@ class PatternBouncerViewModelTest : SysuiTestCase() { 
                    listOf(

                        PatternDotViewModel(1, 0),

                        PatternDotViewModel(1, 1),

                        PatternDotViewModel(1, 2)

                        PatternDotViewModel(1, 2),

                    )

                )

        }
@@ -228,7 +234,7 @@ class PatternBouncerViewModelTest : SysuiTestCase() { 
                    listOf(

                        PatternDotViewModel(2, 0),

                        PatternDotViewModel(1, 1),

                        PatternDotViewModel(0, 2)

                        PatternDotViewModel(0, 2),

                    )

                )

        }
@@ -300,10 +306,7 @@ class PatternBouncerViewModelTest : SysuiTestCase() { 
            val attempts = FakeAuthenticationRepository.MAX_FAILED_AUTH_TRIES_BEFORE_LOCKOUT + 1

            repeat(attempts) { attempt ->

                underTest.onDragStart()

                CORRECT_PATTERN.subList(

                        0,

                        kosmos.authenticationRepository.minPatternLength - 1,

                    )

                CORRECT_PATTERN.subList(0, kosmos.authenticationRepository.minPatternLength - 1)

                    .forEach { coordinate ->

                        underTest.onDrag(

                            xPx = 30f * coordinate.x + 15,
@@ -341,6 +344,16 @@ class PatternBouncerViewModelTest : SysuiTestCase() { 
            assertThat(authResult).isTrue()

        }



    @Test

    @EnableFlags(Flags.FLAG_MSDL_FEEDBACK)

    fun performDotFeedback_deliversDragToken() =

        testScope.runTest {

            underTest.performDotFeedback(null)



            assertThat(msdlPlayer.latestTokenPlayed).isEqualTo(MSDLToken.DRAG_INDICATOR)

            assertThat(msdlPlayer.latestPropertiesPlayed).isNull()

        }



    private fun dragOverCoordinates(vararg coordinatesDragged: Point) {

        underTest.onDragStart()

        coordinatesDragged.forEach(::dragToCoordinate)

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

+38 −1
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ import androidx.compose.ui.input.key.KeyEventType 
import androidx.test.ext.junit.runners.AndroidJUnit4

import androidx.test.filters.SmallTest

import com.android.compose.animation.scene.SceneKey

import com.android.systemui.Flags

import com.android.systemui.SysuiTestCase

import com.android.systemui.authentication.data.repository.FakeAuthenticationRepository

import com.android.systemui.authentication.data.repository.fakeAuthenticationRepository
@@ -35,12 +36,15 @@ import com.android.systemui.authentication.shared.model.AuthenticationMethodMode 
import com.android.systemui.bouncer.data.repository.fakeSimBouncerRepository

import com.android.systemui.classifier.fakeFalsingCollector

import com.android.systemui.coroutines.collectLastValue

import com.android.systemui.haptics.msdl.bouncerHapticPlayer

import com.android.systemui.haptics.msdl.fakeMSDLPlayer

import com.android.systemui.kosmos.testScope

import com.android.systemui.lifecycle.activateIn

import com.android.systemui.res.R

import com.android.systemui.scene.domain.interactor.sceneInteractor

import com.android.systemui.scene.shared.model.Scenes

import com.android.systemui.testKosmos

import com.google.android.msdl.data.model.MSDLToken

import com.google.common.truth.Truth.assertThat

import kotlin.random.Random

import kotlin.random.nextInt
@@ -64,11 +68,14 @@ class PinBouncerViewModelTest : SysuiTestCase() { 
    private val testScope = kosmos.testScope

    private val sceneInteractor by lazy { kosmos.sceneInteractor }

    private val authenticationInteractor by lazy { kosmos.authenticationInteractor }

    private val msdlPlayer = kosmos.fakeMSDLPlayer

    private val bouncerHapticPlayer = kosmos.bouncerHapticPlayer

    private val underTest by lazy {

        kosmos.pinBouncerViewModelFactory.create(

            isInputEnabled = MutableStateFlow(true),

            onIntentionalUserInput = {},

            authenticationMethod = AuthenticationMethodModel.Pin,

            bouncerHapticPlayer = bouncerHapticPlayer,

        )

    }
@@ -97,6 +104,7 @@ class PinBouncerViewModelTest : SysuiTestCase() { 
                    isInputEnabled = MutableStateFlow(true),

                    onIntentionalUserInput = {},

                    authenticationMethod = AuthenticationMethodModel.Sim,

                    bouncerHapticPlayer = bouncerHapticPlayer,

                )



            assertThat(underTest.isSimAreaVisible).isTrue()
@@ -122,6 +130,7 @@ class PinBouncerViewModelTest : SysuiTestCase() { 
                    isInputEnabled = MutableStateFlow(true),

                    onIntentionalUserInput = {},

                    authenticationMethod = AuthenticationMethodModel.Pin,

                    bouncerHapticPlayer = bouncerHapticPlayer,

                )

            kosmos.fakeAuthenticationRepository.setAutoConfirmFeatureEnabled(true)

            val hintedPinLength by collectLastValue(underTest.hintedPinLength)
@@ -487,11 +496,39 @@ class PinBouncerViewModelTest : SysuiTestCase() { 
        testScope.runTest {

            lockDeviceAndOpenPinBouncer()



            underTest.onDigitButtonDown()

            underTest.onDigitButtonDown(null)



            assertTrue(kosmos.fakeFalsingCollector.wasLastGestureAvoided())

        }



    @Test

    @EnableFlags(Flags.FLAG_MSDL_FEEDBACK)

    fun onDigiButtonDown_deliversKeyStandardToken() =

        testScope.runTest {

            underTest.onDigitButtonDown(null)



            assertThat(msdlPlayer.latestTokenPlayed).isEqualTo(MSDLToken.KEYPRESS_STANDARD)

            assertThat(msdlPlayer.latestPropertiesPlayed).isNull()

        }



    @Test

    @EnableFlags(Flags.FLAG_MSDL_FEEDBACK)

    fun onBackspaceButtonPressed_deliversKeyDeleteToken() {

        underTest.onBackspaceButtonPressed(null)



        assertThat(msdlPlayer.latestTokenPlayed).isEqualTo(MSDLToken.KEYPRESS_DELETE)

        assertThat(msdlPlayer.latestPropertiesPlayed).isNull()

    }



    @Test

    @EnableFlags(Flags.FLAG_MSDL_FEEDBACK)

    fun onBackspaceButtonLongPressed_deliversLongPressToken() {

        underTest.onBackspaceButtonLongPressed()



        assertThat(msdlPlayer.latestTokenPlayed).isEqualTo(MSDLToken.LONG_PRESS)

        assertThat(msdlPlayer.latestPropertiesPlayed).isNull()

    }



    private fun TestScope.switchToScene(toScene: SceneKey) {

        val currentScene by collectLastValue(sceneInteractor.currentScene)

        val bouncerHidden = currentScene == Scenes.Bouncer && toScene != Scenes.Bouncer