services/tests/wmtests/src/com/android/server/wm/RunningTasksTest.java

/*
 * Copyright (C) 2018 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.server.wm;

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

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import android.app.ActivityManager.RunningTaskInfo;
import android.content.ComponentName;
import android.os.Bundle;
import android.platform.test.annotations.Presubmit;
import android.util.ArraySet;

import androidx.test.filters.MediumTest;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;

import java.util.ArrayList;

/**
 * Build/Install/Run:
 *  atest WmTests:RunningTasksTest
 */
@MediumTest
@Presubmit
@RunWith(WindowTestRunner.class)
public class RunningTasksTest extends WindowTestsBase {

    private static final ArraySet<Integer> PROFILE_IDS = new ArraySet<>();

    private RunningTasks mRunningTasks;

    @Before
    public void setUp() throws Exception {
        mRunningTasks = new RunningTasks();
    }

    @Test
    public void testCollectTasksByLastActiveTime() {
        // Create a number of stacks with tasks (of incrementing active time)
        final ArrayList<DisplayContent> displays = new ArrayList<>();
        final DisplayContent display = new TestDisplayContent.Builder(mAtm, 1000, 2500).build();
        displays.add(display);

        final int numStacks = 2;
        for (int stackIndex = 0; stackIndex < numStacks; stackIndex++) {
            final Task stack = new TaskBuilder(mSupervisor)
                    .setDisplay(display)
                    .setOnTop(false)
                    .build();
        }

        final int numTasks = 10;
        int activeTime = 0;
        for (int i = 0; i < numTasks; i++) {
            createTask(display.getDefaultTaskDisplayArea().getRootTaskAt(i % numStacks),
                    ".Task" + i, i, activeTime++, null);
        }

        // Ensure that the latest tasks were returned in order of decreasing last active time,
        // collected from all tasks across all the stacks
        final int numFetchTasks = 5;
        ArrayList<RunningTaskInfo> tasks = new ArrayList<>();
        mRunningTasks.getTasks(5, tasks, false /* filterOnlyVisibleRecents */, mRootWindowContainer,
                -1 /* callingUid */, true /* allowed */, true /*crossUser */, PROFILE_IDS);
        assertThat(tasks).hasSize(numFetchTasks);
        for (int i = 0; i < numFetchTasks; i++) {
            assertEquals(numTasks - i - 1, tasks.get(i).id);
        }

        // Ensure that requesting more than the total number of tasks only returns the subset
        // and does not crash
        tasks.clear();
        mRunningTasks.getTasks(100, tasks, false /* filterOnlyVisibleRecents */,
                mRootWindowContainer, -1 /* callingUid */, true /* allowed */, true /* crossUser */,
                PROFILE_IDS);
        assertThat(tasks).hasSize(numTasks);
        for (int i = 0; i < numTasks; i++) {
            assertEquals(numTasks - i - 1, tasks.get(i).id);
        }
    }

    @Test
    public void testTaskInfo_expectNoExtras() {
        final DisplayContent display = new TestDisplayContent.Builder(mAtm, 1000, 2500).build();
        final int numTasks = 10;
        for (int i = 0; i < numTasks; i++) {
            final Task stack = new TaskBuilder(mSupervisor)
                    .setDisplay(display)
                    .setOnTop(true)
                    .build();
            final Bundle data = new Bundle();
            data.putInt("key", 100);
            createTask(stack, ".Task" + i, i, i, data);
        }

        final int numFetchTasks = 5;
        final ArrayList<RunningTaskInfo> tasks = new ArrayList<>();
        mRunningTasks.getTasks(numFetchTasks, tasks, false /* filterOnlyVisibleRecents */,
                mRootWindowContainer, -1 /* callingUid */, true /* allowed */, true /*crossUser */,
                PROFILE_IDS);
        assertThat(tasks).hasSize(numFetchTasks);
        for (int i = 0; i < tasks.size(); i++) {
            final Bundle extras = tasks.get(i).baseIntent.getExtras();
            assertTrue(extras == null || extras.isEmpty());
        }
    }


    /**
     * Create a task with a single activity in it, with the given last active time.
     */
    private Task createTask(Task stack, String className, int taskId,
            int lastActiveTime, Bundle extras) {
        final Task task = new TaskBuilder(mAtm.mTaskSupervisor)
                .setComponent(new ComponentName(mContext.getPackageName(), className))
                .setTaskId(taskId)
                .setParentTask(stack)
                .build();
        task.lastActiveTime = lastActiveTime;
        final ActivityRecord activity = new ActivityBuilder(mAtm)
                .setTask(task)
                .setComponent(new ComponentName(mContext.getPackageName(), ".TaskActivity"))
                .setIntentExtras(extras)
                .build();
        return task;
    }
}