1 /* 2 * Copyright 2017 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 androidx.recyclerview.selection.testing; 18 19 import static org.junit.Assert.assertEquals; 20 import static org.junit.Assert.assertFalse; 21 import static org.junit.Assert.assertTrue; 22 23 import androidx.recyclerview.selection.DefaultSelectionTracker; 24 import androidx.recyclerview.selection.Selection; 25 import androidx.recyclerview.selection.SelectionTracker; 26 27 /** 28 * Helper class for making assertions against the state of a {@link DefaultSelectionTracker} 29 * instance and the consistency of states between {@link DefaultSelectionTracker} and 30 * {@link DefaultSelectionTracker.SelectionObserver}. 31 */ 32 public final class SelectionProbe { 33 34 private final SelectionTracker<String> mMgr; 35 private final TestSelectionObserver<String> mSelectionListener; 36 37 public SelectionProbe(SelectionTracker<String> mgr) { 38 mMgr = mgr; 39 mSelectionListener = new TestSelectionObserver<String>(); 40 mMgr.addObserver(mSelectionListener); 41 } 42 43 public SelectionProbe( 44 SelectionTracker<String> mgr, TestSelectionObserver<String> selectionListener) { 45 mMgr = mgr; 46 mSelectionListener = selectionListener; 47 } 48 49 public void assertRangeSelected(int begin, int end) { 50 for (int i = begin; i <= end; i++) { 51 assertSelected(i); 52 } 53 } 54 55 public void assertRangeNotSelected(int begin, int end) { 56 for (int i = begin; i <= end; i++) { 57 assertNotSelected(i); 58 } 59 } 60 61 public void assertRangeSelection(int begin, int end) { 62 assertSelectionSize(end - begin + 1); 63 assertRangeSelected(begin, end); 64 } 65 66 public void assertSelectionSize(int expected) { 67 Selection<String> selection = mMgr.getSelection(); 68 assertEquals(selection.toString(), expected, selection.size()); 69 70 mSelectionListener.assertSelectionSize(expected); 71 } 72 73 public void assertNoSelection() { 74 assertSelectionSize(0); 75 76 mSelectionListener.assertNoSelection(); 77 } 78 79 public void assertSelection(int... ids) { 80 assertSelected(ids); 81 assertEquals(ids.length, mMgr.getSelection().size()); 82 83 mSelectionListener.assertSelectionSize(ids.length); 84 } 85 86 public void assertSelected(int... ids) { 87 Selection<String> sel = mMgr.getSelection(); 88 for (int id : ids) { 89 String sid = String.valueOf(id); 90 assertTrue(sid + " is not in selection " + sel, sel.contains(sid)); 91 92 mSelectionListener.assertSelected(sid); 93 } 94 } 95 96 public void assertNotSelected(int... ids) { 97 Selection<String> sel = mMgr.getSelection(); 98 for (int id : ids) { 99 String sid = String.valueOf(id); 100 assertFalse(sid + " is in selection " + sel, sel.contains(sid)); 101 102 mSelectionListener.assertNotSelected(sid); 103 } 104 } 105 } 106
