1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.setupwizardlib.test; 18 19 import android.content.Context; 20 import android.test.AndroidTestCase; 21 import android.test.suitebuilder.annotation.SmallTest; 22 import android.view.View; 23 24 import com.android.setupwizardlib.view.BottomScrollView; 25 26 public class BottomScrollViewTest extends AndroidTestCase { 27 28 private TestBottomScrollListener mListener; 29 30 @Override setUp()31 protected void setUp() throws Exception { 32 super.setUp(); 33 mListener = new TestBottomScrollListener(); 34 } 35 36 @SmallTest testNoNeedScroll()37 public void testNoNeedScroll() { 38 createScrollView(20); 39 assertTrue("Scroll should not be required", mListener.scrolledToBottom); 40 } 41 42 @SmallTest testNeedScroll()43 public void testNeedScroll() { 44 createScrollView(110); 45 assertFalse("Scroll should be required", mListener.scrolledToBottom); 46 } 47 48 @SmallTest testScrollToBottom()49 public void testScrollToBottom() { 50 final BottomScrollView bottomScrollView = createScrollView(110); 51 52 assertFalse("Scroll should be required", mListener.scrolledToBottom); 53 54 bottomScrollView.scrollTo(0, 10); 55 assertTrue("Should already be scrolled to bottom", mListener.scrolledToBottom); 56 } 57 58 @SmallTest testScrollThreshold()59 public void testScrollThreshold() { 60 final BottomScrollView bottomScrollView = createScrollView(110); 61 assertEquals("Scroll threshold should be 10", 10, bottomScrollView.getScrollThreshold()); 62 } 63 createScrollView(final int childHeight)64 private BottomScrollView createScrollView(final int childHeight) { 65 final BottomScrollView bottomScrollView = new TestBottomScrollView(getContext()); 66 bottomScrollView.setBottomScrollListener(mListener); 67 68 final View child = new TestChildView(getContext(), childHeight); 69 70 child.measure(0, 0); // TestChildView's measured dimensions doesn't depend on the arguments 71 bottomScrollView.addView(child); 72 bottomScrollView.layout(0, 0, 100, 100); 73 74 return bottomScrollView; 75 } 76 77 private static class TestChildView extends View { 78 79 private static final int WIDTH = 10; 80 private int mHeight; 81 TestChildView(Context context, int height)82 public TestChildView(Context context, int height) { 83 super(context); 84 mHeight = height; 85 } 86 87 @Override onMeasure(int widthMeasureSpec, int heightMeasureSpec)88 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 89 setMeasuredDimension(WIDTH, mHeight); 90 } 91 setHeight(int height)92 public void setHeight(int height) { 93 mHeight = height; 94 } 95 } 96 97 private static class TestBottomScrollView extends BottomScrollView { 98 TestBottomScrollView(Context context)99 public TestBottomScrollView(Context context) { 100 super(context); 101 } 102 103 @Override post(Runnable action)104 public boolean post(Runnable action) { 105 // Post all runnables synchronously so that tests can check the callbacks. 106 action.run(); 107 return true; 108 } 109 } 110 111 private static class TestBottomScrollListener implements BottomScrollView.BottomScrollListener { 112 113 boolean scrolledToBottom = true; 114 115 @Override onScrolledToBottom()116 public void onScrolledToBottom() { 117 scrolledToBottom = true; 118 } 119 120 @Override onRequiresScroll()121 public void onRequiresScroll() { 122 scrolledToBottom = false; 123 } 124 } 125 } 126