Merge "Let prepareDrag return error when 0 size drag shadow is specified."

                    + " asbinder=" + window.asBinder());

        }

        if (width <= 0 || height <= 0) {

            Slog.w(TAG_WM, "width and height of drag shadow must be positive");

            return null;

        }

        synchronized (mService.mWindowMap) {

            if (dragDropActiveLocked()) {

                Slog.w(TAG_WM, "Drag already in progress");

/*

 * Copyright (C) 2017 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 android.view.WindowManager.LayoutParams.TYPE_BASE_APPLICATION;

import static org.junit.Assert.assertFalse;

import static org.junit.Assert.assertNotNull;

import static org.junit.Assert.assertNull;

import static org.junit.Assert.assertTrue;

import static org.mockito.Matchers.anyInt;

import static org.mockito.Mockito.any;

import static org.mockito.Mockito.mock;

import static org.mockito.Mockito.when;

import android.os.IBinder;

import android.platform.test.annotations.Presubmit;

import android.support.test.filters.SmallTest;

import android.support.test.runner.AndroidJUnit4;

import android.view.InputChannel;

import android.view.Surface;

import android.view.SurfaceSession;

import org.junit.After;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

/**

 * Tests for the {@link DragDropController} class.

 *

 * atest com.android.server.wm.DragDropControllerTests

 */

@SmallTest

@RunWith(AndroidJUnit4.class)

@Presubmit

public class DragDropControllerTests extends WindowTestsBase {

    private static final int TIMEOUT_MS = 1000;

    private DragDropController mTarget;

    private WindowState mWindow;

    private IBinder mToken;

    @Before

    public void setUp() throws Exception {

        super.setUp();

        assertNotNull(sWm.mDragDropController);

        mTarget = sWm.mDragDropController;

        mWindow = createWindow(null, TYPE_BASE_APPLICATION, "window");

        synchronized (sWm.mWindowMap) {

            // Because sWm is a static object, the previous operation may remain.

            assertFalse(mTarget.dragDropActiveLocked());

        }

    }

    @After

    public void tearDown() {

        if (mToken != null) {

            mTarget.cancelDragAndDrop(mToken);

        }

    }

    @Test

    public void testPrepareDrag() throws Exception {

        final Surface surface = new Surface();

        mToken = mTarget.prepareDrag(

                new SurfaceSession(), 0, 0, mWindow.mClient, 0, 100, 100, surface);

        assertNotNull(mToken);

    }

    @Test

    public void testPrepareDrag_ZeroSizeSurface() throws Exception {

        final Surface surface = new Surface();

        mToken = mTarget.prepareDrag(

                new SurfaceSession(), 0, 0, mWindow.mClient, 0, 0, 0, surface);

        assertNull(mToken);

    }

}