content: /*
   * 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.launcher3.touch;
  
  import android.support.test.InstrumentationRegistry;
  import android.support.test.filters.SmallTest;
  import android.support.test.runner.AndroidJUnit4;
  import android.util.Log;
  import android.view.MotionEvent;
  import android.view.ViewConfiguration;
  
  import com.android.launcher3.testcomponent.TouchEventGenerator;
  
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.mockito.Mock;
  import org.mockito.MockitoAnnotations;
  
  import static org.mockito.Matchers.anyBoolean;
  import static org.mockito.Matchers.anyFloat;
  import static org.mockito.Mockito.never;
  import static org.mockito.Mockito.verify;
  
  @SmallTest
  @RunWith(AndroidJUnit4.class)
  public class SwipeDetectorTest {
  
      private static final String TAG = SwipeDetectorTest.class.getSimpleName();
      public static void L(String s, Object... parts) {
          Log.d(TAG, (parts.length == 0) ? s : String.format(s, parts));
      }
  
      private TouchEventGenerator mGenerator;
      private SwipeDetector mDetector;
      private int mTouchSlop;
  
      @Mock
      private SwipeDetector.Listener mMockListener;
  
      @Before
      public void setup() {
          MockitoAnnotations.initMocks(this);
          mGenerator = new TouchEventGenerator(new TouchEventGenerator.Listener() {
              @Override
              public void onTouchEvent(MotionEvent event) {
                  mDetector.onTouchEvent(event);
              }
          });
  
          mDetector = new SwipeDetector(mTouchSlop, mMockListener, SwipeDetector.VERTICAL);
          mDetector.setDetectableScrollConditions(SwipeDetector.DIRECTION_BOTH, false);
          mTouchSlop = ViewConfiguration.get(InstrumentationRegistry.getTargetContext())
                  .getScaledTouchSlop();
          L("mTouchSlop=", mTouchSlop);
      }
  
      @Test
      public void testDragStart_vertical() throws Exception {
          mGenerator.put(0, 100, 100);
          mGenerator.move(0, 100, 100 + mTouchSlop);
          // TODO: actually calculate the following parameters and do exact value checks.
          verify(mMockListener).onDragStart(anyBoolean());
      }
  
      @Test
      public void testDragStart_failed() throws Exception {
          mGenerator.put(0, 100, 100);
          mGenerator.move(0, 100 + mTouchSlop, 100);
          // TODO: actually calculate the following parameters and do exact value checks.
          verify(mMockListener, never()).onDragStart(anyBoolean());
      }
  
      @Test
      public void testDragStart_horizontal() throws Exception {
          mDetector = new SwipeDetector(mTouchSlop, mMockListener, SwipeDetector.HORIZONTAL);
          mDetector.setDetectableScrollConditions(SwipeDetector.DIRECTION_BOTH, false);
  
          mGenerator.put(0, 100, 100);
          mGenerator.move(0, 100 + mTouchSlop, 100);
          // TODO: actually calculate the following parameters and do exact value checks.
          verify(mMockListener).onDragStart(anyBoolean());
      }
  
      @Test
      public void testDrag() throws Exception {
          mGenerator.put(0, 100, 100);
          mGenerator.move(0, 100, 100 + mTouchSlop);
          // TODO: actually calculate the following parameters and do exact value checks.
          verify(mMockListener).onDrag(anyFloat(), anyFloat());
      }
  
      @Test
      public void testDragEnd() throws Exception {
          mGenerator.put(0, 100, 100);
          mGenerator.move(0, 100, 100 + mTouchSlop);
          mGenerator.move(0, 100, 100 + mTouchSlop * 2);
          mGenerator.lift(0);
          // TODO: actually calculate the following parameters and do exact value checks.
          verify(mMockListener).onDragEnd(anyFloat(), anyBoolean());
      }
  }
  