1 /* 2 * Copyright (C) 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 com.android.providers.media.util; 18 19 import static org.junit.Assert.assertArrayEquals; 20 import static org.junit.Assert.assertEquals; 21 import static org.junit.Assert.assertTrue; 22 23 import androidx.test.runner.AndroidJUnit4; 24 25 import org.junit.Test; 26 import org.junit.runner.RunWith; 27 28 @RunWith(AndroidJUnit4.class) 29 public class LongArrayTest { 30 31 @Test testLongArray()32 public void testLongArray() { 33 LongArray a = new LongArray(); 34 a.add(1); 35 a.add(2); 36 a.add(3); 37 verify(new long[]{1, 2, 3}, a); 38 39 LongArray b = LongArray.fromArray(new long[]{4, 5, 6, 7, 8}, 3); 40 a.addAll(b); 41 verify(new long[]{1, 2, 3, 4, 5, 6}, a); 42 43 a.resize(2); 44 verify(new long[]{1, 2}, a); 45 46 a.resize(8); 47 verify(new long[]{1, 2, 0, 0, 0, 0, 0, 0}, a); 48 49 a.set(5, 10); 50 verify(new long[]{1, 2, 0, 0, 0, 10, 0, 0}, a); 51 52 a.add(5, 20); 53 assertEquals(20, a.get(5)); 54 assertEquals(5, a.indexOf(20)); 55 verify(new long[]{1, 2, 0, 0, 0, 20, 10, 0, 0}, a); 56 57 assertEquals(-1, a.indexOf(99)); 58 59 a.resize(15); 60 a.set(14, 30); 61 verify(new long[]{1, 2, 0, 0, 0, 20, 10, 0, 0, 0, 0, 0, 0, 0, 30}, a); 62 63 long[] backingArray = new long[]{1, 2, 3, 4}; 64 a = LongArray.wrap(backingArray); 65 a.set(0, 10); 66 assertEquals(10, backingArray[0]); 67 backingArray[1] = 20; 68 backingArray[2] = 30; 69 verify(backingArray, a); 70 assertEquals(2, a.indexOf(30)); 71 72 a.resize(2); 73 assertEquals(0, backingArray[2]); 74 assertEquals(0, backingArray[3]); 75 76 a.add(50); 77 verify(new long[]{10, 20, 50}, a); 78 79 LongArray cloned = a.clone(); 80 verify(new long[]{10, 20, 50}, cloned); 81 assertTrue(LongArray.elementsEqual(a, cloned)); 82 83 a.remove(0); 84 verify(new long[]{20, 50}, a); 85 86 a.clear(); 87 verify(new long[]{}, a); 88 } 89 verify(long[] expected, LongArray longArrays)90 public void verify(long[] expected, LongArray longArrays) { 91 assertEquals(expected.length, longArrays.size()); 92 assertArrayEquals(expected, longArrays.toArray()); 93 } 94 } 95