| /* |
| * Copyright 2019 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.car.ui.pagedrecyclerview; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import static org.mockito.ArgumentMatchers.any; |
| import static org.mockito.Mockito.verify; |
| import static org.mockito.Mockito.when; |
| |
| import android.content.Context; |
| import android.graphics.PointF; |
| import android.view.View; |
| |
| import androidx.recyclerview.widget.LinearLayoutManager; |
| import androidx.recyclerview.widget.RecyclerView; |
| |
| import com.android.car.ui.CarUiRobolectricTestRunner; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.mockito.Mock; |
| import org.mockito.MockitoAnnotations; |
| import org.robolectric.RuntimeEnvironment; |
| import org.robolectric.annotation.Config; |
| |
| @RunWith(CarUiRobolectricTestRunner.class) |
| @Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION) |
| public class PagedSnapHelperTest { |
| |
| private Context mContext; |
| private PagedSnapHelper mPagedSnapHelper; |
| |
| @Mock |
| private RecyclerView mRecyclerView; |
| @Mock |
| private LinearLayoutManager mLayoutManager; |
| @Mock |
| private RecyclerView.Adapter mAdapter; |
| @Mock |
| private View mChild; |
| @Mock |
| private RecyclerView.LayoutParams mLayoutParams; |
| |
| @Before |
| public void setUp() { |
| MockitoAnnotations.initMocks(this); |
| mContext = RuntimeEnvironment.application; |
| |
| mPagedSnapHelper = new PagedSnapHelper(mContext); |
| |
| when(mRecyclerView.getContext()).thenReturn(mContext); |
| mPagedSnapHelper.attachToRecyclerView(mRecyclerView); |
| } |
| |
| @Test |
| public void smoothScrollBy_invalidSnapPosition_shouldCallRecylerViewSmoothScrollBy() { |
| when(mRecyclerView.getLayoutManager()).thenReturn(mLayoutManager); |
| |
| mPagedSnapHelper.smoothScrollBy(10); |
| |
| verify(mRecyclerView).smoothScrollBy(0, 10); |
| } |
| |
| @Test |
| public void smoothScrollBy_invalidSnapPositionNoItem_shouldCallRecylerViewSmoothScrollBy() { |
| when(mRecyclerView.getLayoutManager()).thenReturn(mLayoutManager); |
| when(mLayoutManager.getItemCount()).thenReturn(0); |
| |
| mPagedSnapHelper.smoothScrollBy(10); |
| |
| verify(mRecyclerView).smoothScrollBy(0, 10); |
| } |
| |
| @Test |
| public void smoothScrollBy_invalidSnapPositionNoView_shouldCallRecylerViewSmoothScrollBy() { |
| when(mRecyclerView.getLayoutManager()).thenReturn(mLayoutManager); |
| when(mLayoutManager.getItemCount()).thenReturn(10); |
| when(mLayoutManager.canScrollVertically()).thenReturn(false); |
| when(mLayoutManager.canScrollHorizontally()).thenReturn(false); |
| |
| mPagedSnapHelper.smoothScrollBy(10); |
| |
| verify(mRecyclerView).smoothScrollBy(0, 10); |
| } |
| |
| @Test |
| public void smoothScrollBy_invalidSnapPositionNoVectore_shouldCallRecylerViewSmoothScrollBy() { |
| when(mRecyclerView.getLayoutManager()).thenReturn(mLayoutManager); |
| when(mLayoutManager.getItemCount()).thenReturn(10); |
| when(mLayoutManager.canScrollVertically()).thenReturn(true); |
| when(mLayoutManager.getChildCount()).thenReturn(1); |
| when(mChild.getLayoutParams()).thenReturn(mLayoutParams); |
| when(mLayoutManager.getChildAt(0)).thenReturn(mChild); |
| |
| mPagedSnapHelper.smoothScrollBy(10); |
| |
| verify(mRecyclerView).smoothScrollBy(0, 10); |
| } |
| |
| @Test |
| public void smoothScrollBy_invalidSnapPositionNoDelta_shouldCallRecylerViewSmoothScrollBy() { |
| when(mRecyclerView.getLayoutManager()).thenReturn(mLayoutManager); |
| when(mLayoutManager.getItemCount()).thenReturn(1); |
| when(mLayoutManager.canScrollVertically()).thenReturn(true); |
| when(mLayoutManager.getChildCount()).thenReturn(1); |
| // no delta |
| when(mLayoutManager.getDecoratedBottom(any())).thenReturn(0); |
| when(mChild.getLayoutParams()).thenReturn(mLayoutParams); |
| when(mLayoutManager.getChildAt(0)).thenReturn(mChild); |
| |
| PointF vectorForEnd = new PointF(100, 100); |
| when(mLayoutManager.computeScrollVectorForPosition(0)).thenReturn(vectorForEnd); |
| |
| mPagedSnapHelper.smoothScrollBy(10); |
| |
| verify(mRecyclerView).smoothScrollBy(0, 10); |
| } |
| |
| @Test |
| public void smoothScrollBy_validSnapPosition_shouldCallRecylerViewSmoothScrollBy() { |
| when(mRecyclerView.getLayoutManager()).thenReturn(mLayoutManager); |
| when(mLayoutManager.getItemCount()).thenReturn(1); |
| when(mLayoutManager.canScrollVertically()).thenReturn(true); |
| when(mLayoutManager.getChildCount()).thenReturn(1); |
| // some delta |
| when(mLayoutManager.getDecoratedBottom(any())).thenReturn(10); |
| when(mChild.getLayoutParams()).thenReturn(mLayoutParams); |
| when(mLayoutManager.getChildAt(0)).thenReturn(mChild); |
| |
| PointF vectorForEnd = new PointF(100, 100); |
| when(mLayoutManager.computeScrollVectorForPosition(0)).thenReturn(vectorForEnd); |
| |
| mPagedSnapHelper.smoothScrollBy(10); |
| |
| verify(mLayoutManager).startSmoothScroll(any(RecyclerView.SmoothScroller.class)); |
| } |
| |
| @Test |
| public void calculateDistanceToFinalSnap_shouldReturnTopMarginDifference() { |
| when(mRecyclerView.getLayoutManager()).thenReturn(mLayoutManager); |
| when(mLayoutManager.getItemCount()).thenReturn(1); |
| when(mLayoutManager.canScrollVertically()).thenReturn(true); |
| when(mLayoutManager.getChildCount()).thenReturn(1); |
| // some delta |
| when(mLayoutManager.getDecoratedTop(any())).thenReturn(10); |
| when(mChild.getLayoutParams()).thenReturn(mLayoutParams); |
| |
| int[] distance = mPagedSnapHelper.calculateDistanceToFinalSnap(mLayoutManager, mChild); |
| |
| assertThat(distance[1]).isEqualTo(10); |
| } |
| |
| @Test |
| public void calculateScrollDistance_shouldScrollHeightOfView() { |
| when(mRecyclerView.getLayoutManager()).thenReturn(mLayoutManager); |
| when(mLayoutManager.getItemCount()).thenReturn(1); |
| when(mLayoutManager.canScrollVertically()).thenReturn(true); |
| when(mLayoutManager.getChildCount()).thenReturn(1); |
| // some delta |
| when(mLayoutManager.getDecoratedTop(any())).thenReturn(10); |
| when(mChild.getLayoutParams()).thenReturn(mLayoutParams); |
| when(mLayoutManager.getChildAt(0)).thenReturn(mChild); |
| when(mLayoutManager.getHeight()).thenReturn(-50); |
| |
| int[] distance = mPagedSnapHelper.calculateScrollDistance(0, 10); |
| |
| assertThat(distance[1]).isEqualTo(50); |
| } |
| } |