| /* |
| * 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.recyclerview; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import static org.mockito.ArgumentMatchers.any; |
| import static org.mockito.Mockito.times; |
| import static org.mockito.Mockito.verify; |
| import static org.mockito.Mockito.when; |
| import static org.testng.Assert.assertThrows; |
| |
| import android.content.Context; |
| import android.widget.FrameLayout; |
| |
| import androidx.recyclerview.widget.RecyclerView; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.mockito.Mock; |
| import org.mockito.MockitoAnnotations; |
| import org.robolectric.RobolectricTestRunner; |
| import org.robolectric.RuntimeEnvironment; |
| |
| @RunWith(RobolectricTestRunner.class) |
| public class DefaultScrollBarTest { |
| |
| private Context mContext; |
| private ScrollBar mScrollBar; |
| |
| @Mock |
| private RecyclerView mRecyclerView; |
| @Mock |
| private FrameLayout mParent; |
| @Mock |
| private FrameLayout.LayoutParams mLayoutParams; |
| @Mock |
| private RecyclerView.RecycledViewPool mRecycledViewPool; |
| |
| @Before |
| public void setUp() { |
| MockitoAnnotations.initMocks(this); |
| mContext = RuntimeEnvironment.application; |
| |
| mScrollBar = new DefaultScrollBar(); |
| } |
| |
| @Test |
| public void initialize_shouldInitializeScrollListener() { |
| when(mRecyclerView.getContext()).thenReturn(mContext); |
| when(mRecyclerView.getParent()).thenReturn(mParent); |
| when(mRecyclerView.getRecycledViewPool()).thenReturn(mRecycledViewPool); |
| when(mParent.generateLayoutParams(any())).thenReturn(mLayoutParams); |
| |
| mScrollBar.initialize(mRecyclerView, 10, CarUiRecyclerView.ScrollBarPosition.START, true); |
| |
| // called once in DefaultScrollBar and once in SnapHelper while setting up the call backs |
| // when we use attachToRecyclerView(recyclerview) |
| verify(mRecyclerView, times(2)).addOnScrollListener( |
| any(RecyclerView.OnScrollListener.class)); |
| } |
| |
| @Test |
| public void initialize_shouldSetMaxRecyclerViews() { |
| when(mRecyclerView.getContext()).thenReturn(mContext); |
| when(mRecyclerView.getParent()).thenReturn(mParent); |
| when(mRecyclerView.getRecycledViewPool()).thenReturn(mRecycledViewPool); |
| when(mParent.generateLayoutParams(any())).thenReturn(mLayoutParams); |
| |
| mScrollBar.initialize(mRecyclerView, 10, CarUiRecyclerView.ScrollBarPosition.START, true); |
| |
| verify(mRecycledViewPool).setMaxRecycledViews(0, 12); |
| } |
| |
| @Test |
| public void initialize_shouldNotHaveFlingListener() { |
| when(mRecyclerView.getContext()).thenReturn(mContext); |
| when(mRecyclerView.getParent()).thenReturn(mParent); |
| when(mRecyclerView.getRecycledViewPool()).thenReturn(mRecycledViewPool); |
| when(mParent.generateLayoutParams(any())).thenReturn(mLayoutParams); |
| |
| mScrollBar.initialize(mRecyclerView, 10, CarUiRecyclerView.ScrollBarPosition.START, true); |
| |
| verify(mRecyclerView).setOnFlingListener(null); |
| } |
| |
| @Test |
| public void setPadding_shouldSetStartAndEndPadding() { |
| when(mRecyclerView.getContext()).thenReturn(mContext); |
| when(mRecyclerView.getParent()).thenReturn(mParent); |
| when(mRecyclerView.getRecycledViewPool()).thenReturn(mRecycledViewPool); |
| when(mParent.generateLayoutParams(any())).thenReturn(mLayoutParams); |
| |
| mScrollBar.initialize(mRecyclerView, 10, CarUiRecyclerView.ScrollBarPosition.START, true); |
| mScrollBar.setPadding(10, 20); |
| |
| DefaultScrollBar defaultScrollBar = (DefaultScrollBar) mScrollBar; |
| |
| assertThat(defaultScrollBar.mPaddingStart).isEqualTo(10); |
| assertThat(defaultScrollBar.mPaddingEnd).isEqualTo(20); |
| } |
| |
| @Test |
| public void setPadding_shouldThrowErrorWithoutInitialization() { |
| assertThrows(NullPointerException.class, () -> mScrollBar.setPadding(10, 20)); |
| } |
| |
| @Test |
| public void requestLayout_shouldThrowErrorWithoutInitialization() { |
| assertThrows(NullPointerException.class, () -> mScrollBar.requestLayout()); |
| } |
| } |