Making test case junit4.

package com.android.systemui.recents;

import android.app.ActivityManager;

import android.support.test.runner.AndroidJUnit4;

import android.content.pm.ActivityInfo;

import android.content.res.Resources;

import android.graphics.Bitmap;

import java.util.ArrayList;

import org.junit.Test;

import org.junit.runner.RunWith;

import static junit.framework.Assert.assertTrue;

import static junit.framework.Assert.assertFalse;

import static junit.framework.Assert.assertNotNull;

import static junit.framework.Assert.assertNull;

/**

 * Mock task loader that does not actually load any tasks.

 */

 * - add test to ensure excluded tasks are loaded at the front of the list

 * - add test to ensure the last visible task active time is migrated from absolute to uptime

 */

@RunWith(AndroidJUnit4.class)

public class RecentsTaskLoadPlanTest extends SysuiTestCase {

    private static final String TAG = "RecentsTaskLoadPlanTest";

    private MockRecentsTaskNonLoader mDummyLoader = new MockRecentsTaskNonLoader();

    private SystemServicesProxy mDummySsp = new SystemServicesProxy();

    @Override

    protected void setUp() throws Exception {

        super.setUp();

    }

    @Override

    protected void tearDown() throws Exception {

        super.tearDown();

    }

    @Test

    public void testEmptyRecents() {

        RecentsTaskLoadPlan loadPlan = new RecentsTaskLoadPlan(getTestContext(), mDummySsp);

        RecentsTaskLoadPlan loadPlan = new RecentsTaskLoadPlan(mContext, mDummySsp);

        ArrayList<ActivityManager.RecentTaskInfo> tasks = new ArrayList<>();

        loadPlan.setInternals(tasks, 0 /* current */, 0 /* lastVisibleTaskActive */);

        loadPlan.preloadPlan(mDummyLoader, 0 /* runningTaskId */,

        assertFalse("Expected task to be empty", loadPlan.getTaskStack().getStackTaskCount() > 0);

    }

    @Test

    public void testLessThanEqualMinTasks() {

        RecentsTaskLoadPlan loadPlan = new RecentsTaskLoadPlan(getTestContext(), mDummySsp);

        RecentsTaskLoadPlan loadPlan = new RecentsTaskLoadPlan(mContext, mDummySsp);

        ArrayList<ActivityManager.RecentTaskInfo> tasks = new ArrayList<>();

        int minTasks = 3;

        assertTasksNotInStack(loadPlan.getTaskStack(), 0, 1, 2);

    }

    @Test

    public void testMoreThanMinTasks() {

        RecentsTaskLoadPlan loadPlan = new RecentsTaskLoadPlan(getTestContext(), mDummySsp);

        RecentsTaskLoadPlan loadPlan = new RecentsTaskLoadPlan(mContext, mDummySsp);

        ArrayList<ActivityManager.RecentTaskInfo> tasks = new ArrayList<>();

        int minTasks = 3;