libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/splitscreen/StageTaskListenerTests.java

/*
 * Copyright (C) 2020 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.splitscreen;

import static android.app.ActivityTaskManager.INVALID_TASK_ID;
import static android.view.Display.DEFAULT_DISPLAY;

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

import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;

import android.app.ActivityManager;
import android.view.SurfaceControl;
import android.view.SurfaceSession;

import androidx.test.ext.junit.runners.AndroidJUnit4;
import androidx.test.filters.SmallTest;

import com.android.wm.shell.ShellTaskOrganizer;
import com.android.wm.shell.TestRunningTaskInfoBuilder;
import com.android.wm.shell.common.SyncTransactionQueue;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.ArgumentCaptor;
import org.mockito.Captor;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;

/**
 * Tests for {@link StageTaskListener}
 * Build/Install/Run:
 *  atest WMShellUnitTests:StageTaskListenerTests
 */
@SmallTest
@RunWith(AndroidJUnit4.class)
public final class StageTaskListenerTests {
    @Mock private ShellTaskOrganizer mTaskOrganizer;
    @Mock private StageTaskListener.StageListenerCallbacks mCallbacks;
    @Mock private SyncTransactionQueue mSyncQueue;
    @Captor private ArgumentCaptor<SyncTransactionQueue.TransactionRunnable> mRunnableCaptor;
    private SurfaceSession mSurfaceSession = new SurfaceSession();
    private ActivityManager.RunningTaskInfo mRootTask;
    private StageTaskListener mStageTaskListener;

    @Before
    public void setup() {
        MockitoAnnotations.initMocks(this);
        mStageTaskListener = new StageTaskListener(
                mTaskOrganizer,
                DEFAULT_DISPLAY,
                mCallbacks,
                mSyncQueue,
                mSurfaceSession);
        mRootTask = new TestRunningTaskInfoBuilder().build();
        mRootTask.parentTaskId = INVALID_TASK_ID;
        mStageTaskListener.onTaskAppeared(mRootTask, new SurfaceControl());
    }

    @Test
    public void testInitsDimLayer() {
        verify(mSyncQueue).runInSync(mRunnableCaptor.capture());
        final SurfaceControl.Transaction t = new SurfaceControl.Transaction();
        mRunnableCaptor.getValue().runWithTransaction(t);
        t.apply();

        assertThat(mStageTaskListener.mDimLayer).isNotNull();
    }

    @Test
    public void testRootTaskAppeared() {
        assertThat(mStageTaskListener.mRootTaskInfo.taskId).isEqualTo(mRootTask.taskId);
        verify(mCallbacks).onRootTaskAppeared();
        verify(mCallbacks).onStatusChanged(eq(mRootTask.isVisible), eq(false));
    }

    @Test
    public void testChildTaskAppeared() {
        final ActivityManager.RunningTaskInfo childTask =
                new TestRunningTaskInfoBuilder().setParentTaskId(mRootTask.taskId).build();

        mStageTaskListener.onTaskAppeared(childTask, new SurfaceControl());

        assertThat(mStageTaskListener.mChildrenTaskInfo.contains(childTask.taskId)).isTrue();
        verify(mCallbacks).onStatusChanged(eq(mRootTask.isVisible), eq(true));
    }

    @Test(expected = IllegalArgumentException.class)
    public void testUnknownTaskVanished() {
        final ActivityManager.RunningTaskInfo task = new TestRunningTaskInfoBuilder().build();
        mStageTaskListener.onTaskVanished(task);
    }

    @Test
    public void testTaskVanished() {
        final ActivityManager.RunningTaskInfo childTask =
                new TestRunningTaskInfoBuilder().setParentTaskId(mRootTask.taskId).build();
        mStageTaskListener.mRootTaskInfo = mRootTask;
        mStageTaskListener.mChildrenTaskInfo.put(childTask.taskId, childTask);

        mStageTaskListener.onTaskVanished(childTask);
        verify(mCallbacks, times(2)).onStatusChanged(eq(mRootTask.isVisible), eq(false));

        mStageTaskListener.onTaskVanished(mRootTask);
        verify(mCallbacks).onRootTaskVanished();
    }

    @Test
    public void testTaskInfoChanged_notSupportsMultiWindow() {
        final ActivityManager.RunningTaskInfo childTask =
                new TestRunningTaskInfoBuilder().setParentTaskId(mRootTask.taskId).build();
        childTask.supportsMultiWindow = false;

        mStageTaskListener.onTaskInfoChanged(childTask);
        verify(mCallbacks).onNoLongerSupportMultiWindow();
    }
}