/*
 * Copyright (C) 2023 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.android.wm.shell.bubbles

import android.content.Context
import android.content.Intent
import android.content.pm.ShortcutInfo
import android.content.res.Resources
import android.graphics.Insets
import android.graphics.PointF
import android.graphics.Rect
import android.os.UserHandle
import android.view.WindowManager
import androidx.test.core.app.ApplicationProvider
import androidx.test.ext.junit.runners.AndroidJUnit4
import androidx.test.filters.SmallTest
import com.android.internal.protolog.common.ProtoLog
import com.android.wm.shell.R
import com.android.wm.shell.bubbles.BubblePositioner.MAX_HEIGHT
import com.android.wm.shell.common.bubbles.BubbleBarLocation
import com.google.common.truth.Truth.assertThat
import com.google.common.util.concurrent.MoreExecutors.directExecutor
import org.junit.Before
import org.junit.Test
import org.junit.runner.RunWith

/** Tests operations and the resulting state managed by [BubblePositioner]. */
@SmallTest
@RunWith(AndroidJUnit4::class)
class BubblePositionerTest {

    private lateinit var positioner: BubblePositioner
    private val context = ApplicationProvider.getApplicationContext<Context>()
    private val resources: Resources
        get() = context.resources

    private val defaultDeviceConfig =
        DeviceConfig(
            windowBounds = Rect(0, 0, 1000, 2000),
            isLargeScreen = false,
            isSmallTablet = false,
            isLandscape = false,
            isRtl = false,
            insets = Insets.of(0, 0, 0, 0)
        )

    @Before
    fun setUp() {
        ProtoLog.REQUIRE_PROTOLOGTOOL = false
        val windowManager = context.getSystemService(WindowManager::class.java)
        positioner = BubblePositioner(context, windowManager)
    }

    @Test
    fun testUpdate() {
        val insets = Insets.of(10, 20, 5, 15)
        val screenBounds = Rect(0, 0, 1000, 1200)
        val availableRect = Rect(screenBounds)
        availableRect.inset(insets)
        positioner.update(defaultDeviceConfig.copy(insets = insets, windowBounds = screenBounds))
        assertThat(positioner.availableRect).isEqualTo(availableRect)
        assertThat(positioner.isLandscape).isFalse()
        assertThat(positioner.isLargeScreen).isFalse()
        assertThat(positioner.insets).isEqualTo(insets)
    }

    @Test
    fun testShowBubblesVertically_phonePortrait() {
        positioner.update(defaultDeviceConfig)
        assertThat(positioner.showBubblesVertically()).isFalse()
    }

    @Test
    fun testShowBubblesVertically_phoneLandscape() {
        positioner.update(defaultDeviceConfig.copy(isLandscape = true))
        assertThat(positioner.isLandscape).isTrue()
        assertThat(positioner.showBubblesVertically()).isTrue()
    }

    @Test
    fun testShowBubblesVertically_tablet() {
        positioner.update(defaultDeviceConfig.copy(isLargeScreen = true))
        assertThat(positioner.showBubblesVertically()).isTrue()
    }

    /** If a resting position hasn't been set, calling it will return the default position. */
    @Test
    fun testGetRestingPosition_returnsDefaultPosition() {
        positioner.update(defaultDeviceConfig)
        val restingPosition = positioner.getRestingPosition()
        val defaultPosition = positioner.defaultStartPosition
        assertThat(restingPosition).isEqualTo(defaultPosition)
    }

    /** If a resting position has been set, it'll return that instead of the default position. */
    @Test
    fun testGetRestingPosition_returnsRestingPosition() {
        positioner.update(defaultDeviceConfig)
        val restingPosition = PointF(100f, 100f)
        positioner.restingPosition = restingPosition
        assertThat(positioner.getRestingPosition()).isEqualTo(restingPosition)
    }

    /** Test that the default resting position on phone is in upper left. */
    @Test
    fun testGetRestingPosition_bubble_onPhone() {
        positioner.update(defaultDeviceConfig)
        val allowableStackRegion = positioner.getAllowableStackPositionRegion(1 /* bubbleCount */)
        val restingPosition = positioner.getRestingPosition()
        assertThat(restingPosition.x).isEqualTo(allowableStackRegion.left)
        assertThat(restingPosition.y).isEqualTo(defaultYPosition)
    }

    @Test
    fun testGetRestingPosition_bubble_onPhone_RTL() {
        positioner.update(defaultDeviceConfig.copy(isRtl = true))
        val allowableStackRegion = positioner.getAllowableStackPositionRegion(1 /* bubbleCount */)
        val restingPosition = positioner.getRestingPosition()
        assertThat(restingPosition.x).isEqualTo(allowableStackRegion.right)
        assertThat(restingPosition.y).isEqualTo(defaultYPosition)
    }

    /** Test that the default resting position on tablet is middle left. */
    @Test
    fun testGetRestingPosition_chatBubble_onTablet() {
        positioner.update(defaultDeviceConfig.copy(isLargeScreen = true))
        val allowableStackRegion = positioner.getAllowableStackPositionRegion(1 /* bubbleCount */)
        val restingPosition = positioner.getRestingPosition()
        assertThat(restingPosition.x).isEqualTo(allowableStackRegion.left)
        assertThat(restingPosition.y).isEqualTo(defaultYPosition)
    }

    @Test
    fun testGetRestingPosition_chatBubble_onTablet_RTL() {
        positioner.update(defaultDeviceConfig.copy(isLargeScreen = true, isRtl = true))
        val allowableStackRegion = positioner.getAllowableStackPositionRegion(1 /* bubbleCount */)
        val restingPosition = positioner.getRestingPosition()
        assertThat(restingPosition.x).isEqualTo(allowableStackRegion.right)
        assertThat(restingPosition.y).isEqualTo(defaultYPosition)
    }

    /** Test that the default resting position on tablet is middle right. */
    @Test
    fun testGetDefaultPosition_appBubble_onTablet() {
        positioner.update(defaultDeviceConfig.copy(isLargeScreen = true))
        val allowableStackRegion = positioner.getAllowableStackPositionRegion(1 /* bubbleCount */)
        val startPosition = positioner.getDefaultStartPosition(true /* isAppBubble */)
        assertThat(startPosition.x).isEqualTo(allowableStackRegion.right)
        assertThat(startPosition.y).isEqualTo(defaultYPosition)
    }

    @Test
    fun testGetRestingPosition_appBubble_onTablet_RTL() {
        positioner.update(defaultDeviceConfig.copy(isLargeScreen = true, isRtl = true))
        val allowableStackRegion = positioner.getAllowableStackPositionRegion(1 /* bubbleCount */)
        val startPosition = positioner.getDefaultStartPosition(true /* isAppBubble */)
        assertThat(startPosition.x).isEqualTo(allowableStackRegion.left)
        assertThat(startPosition.y).isEqualTo(defaultYPosition)
    }

    @Test
    fun testGetRestingPosition_afterBoundsChange() {
        positioner.update(
            defaultDeviceConfig.copy(isLargeScreen = true, windowBounds = Rect(0, 0, 2000, 1600))
        )

        // Set the resting position to the right side
        var allowableStackRegion = positioner.getAllowableStackPositionRegion(1 /* bubbleCount */)
        val restingPosition = PointF(allowableStackRegion.right, allowableStackRegion.centerY())
        positioner.restingPosition = restingPosition

        // Now make the device smaller
        positioner.update(
            defaultDeviceConfig.copy(isLargeScreen = false, windowBounds = Rect(0, 0, 1000, 1600))
        )

        // Check the resting position is on the correct side
        allowableStackRegion = positioner.getAllowableStackPositionRegion(1 /* bubbleCount */)
        assertThat(positioner.restingPosition.x).isEqualTo(allowableStackRegion.right)
    }

    @Test
    fun testHasUserModifiedDefaultPosition_false() {
        positioner.update(defaultDeviceConfig.copy(isLargeScreen = true, isRtl = true))
        assertThat(positioner.hasUserModifiedDefaultPosition()).isFalse()
        positioner.restingPosition = positioner.defaultStartPosition
        assertThat(positioner.hasUserModifiedDefaultPosition()).isFalse()
    }

    @Test
    fun testHasUserModifiedDefaultPosition_true() {
        positioner.update(defaultDeviceConfig.copy(isLargeScreen = true, isRtl = true))
        assertThat(positioner.hasUserModifiedDefaultPosition()).isFalse()
        positioner.restingPosition = PointF(0f, 100f)
        assertThat(positioner.hasUserModifiedDefaultPosition()).isTrue()
    }

    @Test
    fun testBubbleBarExpandedViewHeightAndWidth() {
        val deviceConfig =
            defaultDeviceConfig.copy(
                // portrait orientation
                isLandscape = false,
                isLargeScreen = true,
                insets = Insets.of(10, 20, 5, 15),
                windowBounds = Rect(0, 0, 1800, 2600)
            )

        positioner.setShowingInBubbleBar(true)
        positioner.update(deviceConfig)
        positioner.bubbleBarTopOnScreen = 2500

        val spaceBetweenTopInsetAndBubbleBarInLandscape = 1680
        val expandedViewVerticalSpacing =
            resources.getDimensionPixelSize(R.dimen.bubble_expanded_view_padding)
        val expectedHeight =
            spaceBetweenTopInsetAndBubbleBarInLandscape - 2 * expandedViewVerticalSpacing
        val expectedWidth = resources.getDimensionPixelSize(R.dimen.bubble_bar_expanded_view_width)

        assertThat(positioner.getExpandedViewWidthForBubbleBar(false)).isEqualTo(expectedWidth)
        assertThat(positioner.getExpandedViewHeightForBubbleBar(false)).isEqualTo(expectedHeight)
    }

    @Test
    fun testBubbleBarExpandedViewHeightAndWidth_screenWidthTooSmall() {
        val screenWidth = 300
        val deviceConfig =
            defaultDeviceConfig.copy(
                // portrait orientation
                isLandscape = false,
                isLargeScreen = true,
                insets = Insets.of(10, 20, 5, 15),
                windowBounds = Rect(0, 0, screenWidth, 2600)
            )
        positioner.setShowingInBubbleBar(true)
        positioner.update(deviceConfig)
        positioner.bubbleBarTopOnScreen = 2500

        val spaceBetweenTopInsetAndBubbleBarInLandscape = 180
        val expandedViewSpacing =
            resources.getDimensionPixelSize(R.dimen.bubble_expanded_view_padding)
        val expectedHeight = spaceBetweenTopInsetAndBubbleBarInLandscape - 2 * expandedViewSpacing
        val expectedWidth = screenWidth - 15 /* horizontal insets */ - 2 * expandedViewSpacing
        assertThat(positioner.getExpandedViewWidthForBubbleBar(false)).isEqualTo(expectedWidth)
        assertThat(positioner.getExpandedViewHeightForBubbleBar(false)).isEqualTo(expectedHeight)
    }

    @Test
    fun testGetExpandedViewHeight_max() {
        val deviceConfig =
            defaultDeviceConfig.copy(
                isLargeScreen = true,
                insets = Insets.of(10, 20, 5, 15),
                windowBounds = Rect(0, 0, 1800, 2600)
            )
        positioner.update(deviceConfig)
        val intent = Intent(Intent.ACTION_VIEW).setPackage(context.packageName)
        val bubble = Bubble.createAppBubble(intent, UserHandle(1), null, directExecutor())

        assertThat(positioner.getExpandedViewHeight(bubble)).isEqualTo(MAX_HEIGHT)
    }

    @Test
    fun testGetExpandedViewHeight_customHeight_valid() {
        val deviceConfig =
            defaultDeviceConfig.copy(
                isLargeScreen = true,
                insets = Insets.of(10, 20, 5, 15),
                windowBounds = Rect(0, 0, 1800, 2600)
            )
        positioner.update(deviceConfig)
        val minHeight =
            context.resources.getDimensionPixelSize(R.dimen.bubble_expanded_default_height)
        val bubble =
            Bubble(
                "key",
                ShortcutInfo.Builder(context, "id").build(),
                minHeight + 100 /* desiredHeight */,
                0 /* desiredHeightResId */,
                "title",
                0 /* taskId */,
                null /* locus */,
                true /* isDismissable */,
                directExecutor()
            ) {}

        // Ensure the height is the same as the desired value
        assertThat(positioner.getExpandedViewHeight(bubble))
            .isEqualTo(bubble.getDesiredHeight(context))
    }

    @Test
    fun testGetExpandedViewHeight_customHeight_tooSmall() {
        val deviceConfig =
            defaultDeviceConfig.copy(
                isLargeScreen = true,
                insets = Insets.of(10, 20, 5, 15),
                windowBounds = Rect(0, 0, 1800, 2600)
            )
        positioner.update(deviceConfig)

        val bubble =
            Bubble(
                "key",
                ShortcutInfo.Builder(context, "id").build(),
                10 /* desiredHeight */,
                0 /* desiredHeightResId */,
                "title",
                0 /* taskId */,
                null /* locus */,
                true /* isDismissable */,
                directExecutor()
            ) {}

        // Ensure the height is the same as the desired value
        val minHeight =
            context.resources.getDimensionPixelSize(R.dimen.bubble_expanded_default_height)
        assertThat(positioner.getExpandedViewHeight(bubble)).isEqualTo(minHeight)
    }

    @Test
    fun testGetMaxExpandedViewHeight_onLargeTablet() {
        val deviceConfig =
            defaultDeviceConfig.copy(
                isLargeScreen = true,
                insets = Insets.of(10, 20, 5, 15),
                windowBounds = Rect(0, 0, 1800, 2600)
            )
        positioner.update(deviceConfig)

        val manageButtonHeight =
            context.resources.getDimensionPixelSize(R.dimen.bubble_manage_button_height)
        val pointerWidth = context.resources.getDimensionPixelSize(R.dimen.bubble_pointer_width)
        val expandedViewPadding =
            context.resources.getDimensionPixelSize(R.dimen.bubble_expanded_view_padding)
        val expectedHeight =
            1800 - 2 * 20 - manageButtonHeight - pointerWidth - expandedViewPadding * 2
        assertThat(positioner.getMaxExpandedViewHeight(false /* isOverflow */))
            .isEqualTo(expectedHeight)
    }

    @Test
    fun testAreBubblesBottomAligned_largeScreen_true() {
        val deviceConfig =
            defaultDeviceConfig.copy(
                isLargeScreen = true,
                insets = Insets.of(10, 20, 5, 15),
                windowBounds = Rect(0, 0, 1800, 2600)
            )
        positioner.update(deviceConfig)

        assertThat(positioner.areBubblesBottomAligned()).isTrue()
    }

    @Test
    fun testAreBubblesBottomAligned_largeScreen_landscape_false() {
        val deviceConfig =
            defaultDeviceConfig.copy(
                isLargeScreen = true,
                isLandscape = true,
                insets = Insets.of(10, 20, 5, 15),
                windowBounds = Rect(0, 0, 1800, 2600)
            )
        positioner.update(deviceConfig)

        assertThat(positioner.areBubblesBottomAligned()).isFalse()
    }

    @Test
    fun testAreBubblesBottomAligned_smallTablet_false() {
        val deviceConfig =
            defaultDeviceConfig.copy(
                isLargeScreen = true,
                isSmallTablet = true,
                insets = Insets.of(10, 20, 5, 15),
                windowBounds = Rect(0, 0, 1800, 2600)
            )
        positioner.update(deviceConfig)

        assertThat(positioner.areBubblesBottomAligned()).isFalse()
    }

    @Test
    fun testAreBubblesBottomAligned_phone_false() {
        val deviceConfig =
            defaultDeviceConfig.copy(
                insets = Insets.of(10, 20, 5, 15),
                windowBounds = Rect(0, 0, 1800, 2600)
            )
        positioner.update(deviceConfig)

        assertThat(positioner.areBubblesBottomAligned()).isFalse()
    }

    @Test
    fun testExpandedViewY_phoneLandscape() {
        val deviceConfig =
            defaultDeviceConfig.copy(
                isLandscape = true,
                insets = Insets.of(10, 20, 5, 15),
                windowBounds = Rect(0, 0, 1800, 2600)
            )
        positioner.update(deviceConfig)

        val intent = Intent(Intent.ACTION_VIEW).setPackage(context.packageName)
        val bubble = Bubble.createAppBubble(intent, UserHandle(1), null, directExecutor())

        // This bubble will have max height so it'll always be top aligned
        assertThat(positioner.getExpandedViewY(bubble, 0f /* bubblePosition */))
            .isEqualTo(positioner.getExpandedViewYTopAligned())
    }

    @Test
    fun testExpandedViewY_phonePortrait() {
        val deviceConfig =
            defaultDeviceConfig.copy(
                insets = Insets.of(10, 20, 5, 15),
                windowBounds = Rect(0, 0, 1800, 2600)
            )
        positioner.update(deviceConfig)

        val intent = Intent(Intent.ACTION_VIEW).setPackage(context.packageName)
        val bubble = Bubble.createAppBubble(intent, UserHandle(1), null, directExecutor())

        // Always top aligned in phone portrait
        assertThat(positioner.getExpandedViewY(bubble, 0f /* bubblePosition */))
            .isEqualTo(positioner.getExpandedViewYTopAligned())
    }

    @Test
    fun testExpandedViewY_smallTabletLandscape() {
        val deviceConfig =
            defaultDeviceConfig.copy(
                isSmallTablet = true,
                isLandscape = true,
                insets = Insets.of(10, 20, 5, 15),
                windowBounds = Rect(0, 0, 1800, 2600)
            )
        positioner.update(deviceConfig)

        val intent = Intent(Intent.ACTION_VIEW).setPackage(context.packageName)
        val bubble = Bubble.createAppBubble(intent, UserHandle(1), null, directExecutor())

        // This bubble will have max height which is always top aligned on small tablets
        assertThat(positioner.getExpandedViewY(bubble, 0f /* bubblePosition */))
            .isEqualTo(positioner.getExpandedViewYTopAligned())
    }

    @Test
    fun testExpandedViewY_smallTabletPortrait() {
        val deviceConfig =
            defaultDeviceConfig.copy(
                isSmallTablet = true,
                insets = Insets.of(10, 20, 5, 15),
                windowBounds = Rect(0, 0, 1800, 2600)
            )
        positioner.update(deviceConfig)

        val intent = Intent(Intent.ACTION_VIEW).setPackage(context.packageName)
        val bubble = Bubble.createAppBubble(intent, UserHandle(1), null, directExecutor())

        // This bubble will have max height which is always top aligned on small tablets
        assertThat(positioner.getExpandedViewY(bubble, 0f /* bubblePosition */))
            .isEqualTo(positioner.getExpandedViewYTopAligned())
    }

    @Test
    fun testExpandedViewY_largeScreenLandscape() {
        val deviceConfig =
            defaultDeviceConfig.copy(
                isLargeScreen = true,
                isLandscape = true,
                insets = Insets.of(10, 20, 5, 15),
                windowBounds = Rect(0, 0, 1800, 2600)
            )
        positioner.update(deviceConfig)

        val intent = Intent(Intent.ACTION_VIEW).setPackage(context.packageName)
        val bubble = Bubble.createAppBubble(intent, UserHandle(1), null, directExecutor())

        // This bubble will have max height which is always top aligned on landscape, large tablet
        assertThat(positioner.getExpandedViewY(bubble, 0f /* bubblePosition */))
            .isEqualTo(positioner.getExpandedViewYTopAligned())
    }

    @Test
    fun testExpandedViewY_largeScreenPortrait() {
        val deviceConfig =
            defaultDeviceConfig.copy(
                isLargeScreen = true,
                insets = Insets.of(10, 20, 5, 15),
                windowBounds = Rect(0, 0, 1800, 2600)
            )
        positioner.update(deviceConfig)

        val intent = Intent(Intent.ACTION_VIEW).setPackage(context.packageName)
        val bubble = Bubble.createAppBubble(intent, UserHandle(1), null, directExecutor())

        val manageButtonHeight =
            context.resources.getDimensionPixelSize(R.dimen.bubble_manage_button_height)
        val manageButtonPlusMargin =
            manageButtonHeight +
                2 * context.resources.getDimensionPixelSize(R.dimen.bubble_manage_button_margin)
        val pointerWidth = context.resources.getDimensionPixelSize(R.dimen.bubble_pointer_width)

        val expectedExpandedViewY =
            positioner.availableRect.bottom -
                manageButtonPlusMargin -
                positioner.getExpandedViewHeightForLargeScreen() -
                pointerWidth

        // Bubbles are bottom aligned on portrait, large tablet
        assertThat(positioner.getExpandedViewY(bubble, 0f /* bubblePosition */))
            .isEqualTo(expectedExpandedViewY)
    }

    @Test
    fun testGetTaskViewContentWidth_onLeft() {
        positioner.update(defaultDeviceConfig.copy(insets = Insets.of(100, 0, 200, 0)))
        val taskViewWidth = positioner.getTaskViewContentWidth(true /* onLeft */)
        val paddings =
            positioner.getExpandedViewContainerPadding(true /* onLeft */, false /* isOverflow */)
        assertThat(taskViewWidth)
            .isEqualTo(positioner.screenRect.width() - paddings[0] - paddings[2])
    }

    @Test
    fun testGetTaskViewContentWidth_onRight() {
        positioner.update(defaultDeviceConfig.copy(insets = Insets.of(100, 0, 200, 0)))
        val taskViewWidth = positioner.getTaskViewContentWidth(false /* onLeft */)
        val paddings =
            positioner.getExpandedViewContainerPadding(false /* onLeft */, false /* isOverflow */)
        assertThat(taskViewWidth)
            .isEqualTo(positioner.screenRect.width() - paddings[0] - paddings[2])
    }

    @Test
    fun testIsBubbleBarOnLeft_defaultsToRight() {
        positioner.bubbleBarLocation = BubbleBarLocation.DEFAULT
        assertThat(positioner.isBubbleBarOnLeft).isFalse()

        // Check that left and right return expected position
        positioner.bubbleBarLocation = BubbleBarLocation.LEFT
        assertThat(positioner.isBubbleBarOnLeft).isTrue()
        positioner.bubbleBarLocation = BubbleBarLocation.RIGHT
        assertThat(positioner.isBubbleBarOnLeft).isFalse()
    }

    @Test
    fun testIsBubbleBarOnLeft_rtlEnabled_defaultsToLeft() {
        positioner.update(defaultDeviceConfig.copy(isRtl = true))

        positioner.bubbleBarLocation = BubbleBarLocation.DEFAULT
        assertThat(positioner.isBubbleBarOnLeft).isTrue()

        // Check that left and right return expected position
        positioner.bubbleBarLocation = BubbleBarLocation.LEFT
        assertThat(positioner.isBubbleBarOnLeft).isTrue()
        positioner.bubbleBarLocation = BubbleBarLocation.RIGHT
        assertThat(positioner.isBubbleBarOnLeft).isFalse()
    }

    @Test
    fun testGetBubbleBarExpandedViewBounds_onLeft() {
        testGetBubbleBarExpandedViewBounds(onLeft = true, isOverflow = false)
    }

    @Test
    fun testGetBubbleBarExpandedViewBounds_onRight() {
        testGetBubbleBarExpandedViewBounds(onLeft = false, isOverflow = false)
    }

    @Test
    fun testGetBubbleBarExpandedViewBounds_isOverflow_onLeft() {
        testGetBubbleBarExpandedViewBounds(onLeft = true, isOverflow = true)
    }

    @Test
    fun testGetBubbleBarExpandedViewBounds_isOverflow_onRight() {
        testGetBubbleBarExpandedViewBounds(onLeft = false, isOverflow = true)
    }

    private fun testGetBubbleBarExpandedViewBounds(onLeft: Boolean, isOverflow: Boolean) {
        positioner.setShowingInBubbleBar(true)
        val windowBounds = Rect(0, 0, 2000, 2600)
        val insets = Insets.of(10, 20, 5, 15)
        val deviceConfig =
            defaultDeviceConfig.copy(
                isLargeScreen = true,
                isLandscape = true,
                insets = insets,
                windowBounds = windowBounds
            )
        positioner.update(deviceConfig)

        val bubbleBarHeight = 100
        positioner.bubbleBarTopOnScreen = windowBounds.bottom - insets.bottom - bubbleBarHeight

        val expandedViewPadding =
            context.resources.getDimensionPixelSize(R.dimen.bubble_expanded_view_padding)

        val left: Int
        val right: Int
        if (onLeft) {
            // Pin to the left, calculate right
            left = deviceConfig.insets.left + expandedViewPadding
            right = left + positioner.getExpandedViewWidthForBubbleBar(isOverflow)
        } else {
            // Pin to the right, calculate left
            right =
                deviceConfig.windowBounds.right - deviceConfig.insets.right - expandedViewPadding
            left = right - positioner.getExpandedViewWidthForBubbleBar(isOverflow)
        }
        // Above the bubble bar
        val bottom = positioner.bubbleBarTopOnScreen - expandedViewPadding
        // Calculate right and top based on size
        val top = bottom - positioner.getExpandedViewHeightForBubbleBar(isOverflow)
        val expectedBounds = Rect(left, top, right, bottom)

        val bounds = Rect()
        positioner.getBubbleBarExpandedViewBounds(onLeft, isOverflow, bounds)

        assertThat(bounds).isEqualTo(expectedBounds)
    }

    private val defaultYPosition: Float
        /**
         * Calculates the Y position bubbles should be placed based on the config. Based on the
         * calculations in [BubblePositioner.getDefaultStartPosition] and
         * [BubbleStackView.RelativeStackPosition].
         */
        get() {
            val isTablet = positioner.isLargeScreen

            // On tablet the position is centered, on phone it is an offset from the top.
            val desiredY =
                if (isTablet) {
                    positioner.screenRect.height() / 2f - positioner.bubbleSize / 2f
                } else {
                    context.resources
                        .getDimensionPixelOffset(R.dimen.bubble_stack_starting_offset_y)
                        .toFloat()
                }
            // Since we're visually centering the bubbles on tablet, use total screen height rather
            // than the available height.
            val height =
                if (isTablet) {
                    positioner.screenRect.height()
                } else {
                    positioner.availableRect.height()
                }
            val offsetPercent = (desiredY / height).coerceIn(0f, 1f)
            val allowableStackRegion =
                positioner.getAllowableStackPositionRegion(1 /* bubbleCount */)
            return allowableStackRegion.top + allowableStackRegion.height() * offsetPercent
        }
}