Add base scenario test for exit desktop mode.

/*

 * Copyright (C) 2024 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.flicker.service.desktopmode.scenarios

import android.app.Instrumentation

import android.tools.NavBar

import android.tools.Rotation

import android.tools.traces.parsers.WindowManagerStateHelper

import androidx.test.platform.app.InstrumentationRegistry

import androidx.test.uiautomator.UiDevice

import com.android.launcher3.tapl.LauncherInstrumentation

import com.android.server.wm.flicker.helpers.DesktopModeAppHelper

import com.android.server.wm.flicker.helpers.SimpleAppHelper

import com.android.window.flags.Flags

import com.android.wm.shell.flicker.service.common.Utils

import org.junit.After

import org.junit.Assume

import org.junit.Before

import org.junit.Ignore

import org.junit.Rule

import org.junit.Test

@Ignore("Base Test Class")

abstract class ExitDesktopWithDragToTopDragZone

@JvmOverloads

constructor(val rotation: Rotation = Rotation.ROTATION_0) {

    private val instrumentation: Instrumentation = InstrumentationRegistry.getInstrumentation()

    private val tapl = LauncherInstrumentation()

    private val wmHelper = WindowManagerStateHelper(instrumentation)

    private val device = UiDevice.getInstance(instrumentation)

    private val testApp = DesktopModeAppHelper(SimpleAppHelper(instrumentation))

    @Rule @JvmField val testSetupRule = Utils.testSetupRule(NavBar.MODE_GESTURAL, rotation)

    @Before

    fun setup() {

        Assume.assumeTrue(Flags.enableDesktopWindowingMode() && tapl.isTablet)

        tapl.setEnableRotation(true)

        tapl.setExpectedRotation(rotation.value)

        testApp.enterDesktopWithDrag(wmHelper, device)

    }

    @Test

    open fun exitDesktopWithDragToTopDragZone() {

        testApp.exitDesktopWithDragToTopDragZone(wmHelper, device)

    }

    @After

    fun teardown() {

        testApp.exit(wmHelper)

    }

}

            Corners.RIGHT_BOTTOM -> Pair(windowRect.right, windowRect.bottom)

        }

    }

    /** Exit desktop mode by dragging the app handle to the top drag zone. */

    fun exitDesktopWithDragToTopDragZone(

        wmHelper: WindowManagerStateHelper,

        device: UiDevice,

    ) {

        dragAppWindowToTopDragZone(wmHelper, device)

        waitForTransitionToFullscreen(wmHelper)

    }

    private fun dragAppWindowToTopDragZone(wmHelper: WindowManagerStateHelper, device: UiDevice) {

        val windowRect = wmHelper.getWindowRegion(innerHelper).bounds

        val displayRect =

            wmHelper.currentState.wmState.getDefaultDisplay()?.displayRect

                ?: throw IllegalStateException("Default display is null")

        val startX = windowRect.centerX()

        val endX = displayRect.centerX()

        val startY = windowRect.top

        val endY = 0 // top of the screen

        // drag the app window to top drag zone

        device.drag(startX, startY, endX, endY, 100)

    }

    /** Wait for transition to full screen to finish. */

    private fun waitForTransitionToFullscreen(wmHelper: WindowManagerStateHelper) {

        wmHelper

            .StateSyncBuilder()

            .withFullScreenApp(innerHelper)

            .withAppTransitionIdle()

            .waitForAndVerify()

    }

}