BottomSheetBehaviorTouchTest.java

/*
 * Copyright (C) 2016 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 android.support.design.widget;

import static android.support.test.InstrumentationRegistry.getInstrumentation;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.notNullValue;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.hamcrest.CoreMatchers.sameInstance;
import static org.hamcrest.MatcherAssert.assertThat;

import android.support.design.testapp.CoordinatorLayoutActivity;
import android.support.test.filters.MediumTest;
import android.support.test.rule.ActivityTestRule;
import android.support.test.runner.AndroidJUnit4;
import android.view.MotionEvent;
import android.view.View;
import android.widget.FrameLayout;
import android.support.test.espresso.Espresso;
import android.support.test.espresso.NoMatchingViewException;
import android.support.test.espresso.ViewAssertion;
import android.support.test.espresso.action.ViewActions;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;

@MediumTest
@RunWith(AndroidJUnit4.class)
public class BottomSheetBehaviorTouchTest {

  private static final int PEEK_HEIGHT = 100;

  @Rule
  public final ActivityTestRule<CoordinatorLayoutActivity> activityTestRule =
      new ActivityTestRule<>(CoordinatorLayoutActivity.class);

  private FrameLayout mBottomSheet;

  private BottomSheetBehavior<FrameLayout> mBehavior;

  private boolean mDown;

  private View.OnTouchListener mOnTouchListener =
      new View.OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
          switch (event.getActionMasked()) {
            case MotionEvent.ACTION_DOWN:
              mDown = true;
              break;
          }
          return true;
        }
      };

  @Before
  public void setUpBottomSheet() {
    getInstrumentation()
        .runOnMainSync(
            new Runnable() {
              @Override
              public void run() {
                CoordinatorLayoutActivity activity = activityTestRule.getActivity();
                activity.mContainer.setOnTouchListener(mOnTouchListener);
                mBottomSheet = new FrameLayout(activity);
                CoordinatorLayout.LayoutParams params =
                    new CoordinatorLayout.LayoutParams(
                        CoordinatorLayout.LayoutParams.MATCH_PARENT,
                        CoordinatorLayout.LayoutParams.MATCH_PARENT);
                mBehavior = new BottomSheetBehavior<>();
                mBehavior.setPeekHeight(PEEK_HEIGHT);
                params.setBehavior(mBehavior);
                activity.mCoordinatorLayout.addView(mBottomSheet, params);
              }
            });
  }

  @Test
  public void testSetUp() {
    assertThat(mBottomSheet, is(notNullValue()));
    assertThat(mBehavior, is(sameInstance(BottomSheetBehavior.from(mBottomSheet))));
  }

  @Test
  public void testTouchCoordinatorLayout() {
    final CoordinatorLayoutActivity activity = activityTestRule.getActivity();
    mDown = false;
    Espresso.onView(sameInstance((View) activity.mCoordinatorLayout))
        .perform(ViewActions.click()) // Click outside the bottom sheet
        .check(
            new ViewAssertion() {
              @Override
              public void check(View view, NoMatchingViewException e) {
                assertThat(e, is(nullValue()));
                assertThat(view, is(notNullValue()));
                // Check that the touch event fell through to the container
                assertThat(mDown, is(true));
              }
            });
  }
}