1 // Protocol Buffers - Google's data interchange format 2 // Copyright 2008 Google Inc. All rights reserved. 3 // https://developers.google.com/protocol-buffers/ 4 // 5 // Redistribution and use in source and binary forms, with or without 6 // modification, are permitted provided that the following conditions are 7 // met: 8 // 9 // * Redistributions of source code must retain the above copyright 10 // notice, this list of conditions and the following disclaimer. 11 // * Redistributions in binary form must reproduce the above 12 // copyright notice, this list of conditions and the following disclaimer 13 // in the documentation and/or other materials provided with the 14 // distribution. 15 // * Neither the name of Google Inc. nor the names of its 16 // contributors may be used to endorse or promote products derived from 17 // this software without specific prior written permission. 18 // 19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 31 package com.google.protobuf; 32 33 import protobuf_unittest.Engine; 34 import protobuf_unittest.Vehicle; 35 import protobuf_unittest.Wheel; 36 import java.util.ArrayList; 37 import java.util.List; 38 import junit.framework.TestCase; 39 40 /** 41 * Test cases that exercise end-to-end use cases involving {@link SingleFieldBuilder} and {@link 42 * RepeatedFieldBuilder}. 43 * 44 * @author jonp@google.com (Jon Perlow) 45 */ 46 public class NestedBuildersTest extends TestCase { 47 testMessagesAndBuilders()48 public void testMessagesAndBuilders() { 49 Vehicle.Builder vehicleBuilder = Vehicle.newBuilder(); 50 vehicleBuilder.addWheelBuilder().setRadius(4).setWidth(1); 51 vehicleBuilder.addWheelBuilder().setRadius(4).setWidth(2); 52 vehicleBuilder.addWheelBuilder().setRadius(4).setWidth(3); 53 vehicleBuilder.addWheelBuilder().setRadius(4).setWidth(4); 54 vehicleBuilder.getEngineBuilder().setLiters(10); 55 56 Vehicle vehicle = vehicleBuilder.build(); 57 assertEquals(4, vehicle.getWheelCount()); 58 for (int i = 0; i < 4; i++) { 59 Wheel wheel = vehicle.getWheel(i); 60 assertEquals(4, wheel.getRadius()); 61 assertEquals(i + 1, wheel.getWidth()); 62 } 63 assertEquals(10, vehicle.getEngine().getLiters()); 64 65 for (int i = 0; i < 4; i++) { 66 vehicleBuilder.getWheelBuilder(i).setRadius(5).setWidth(i + 10); 67 } 68 Engine.Builder engineBuilder = vehicleBuilder.getEngineBuilder().setLiters(20); 69 70 vehicle = vehicleBuilder.build(); 71 for (int i = 0; i < 4; i++) { 72 Wheel wheel = vehicle.getWheel(i); 73 assertEquals(5, wheel.getRadius()); 74 assertEquals(i + 10, wheel.getWidth()); 75 } 76 assertEquals(20, vehicle.getEngine().getLiters()); 77 assertTrue(vehicle.hasEngine()); 78 79 engineBuilder.setLiters(50); 80 assertEquals(50, vehicleBuilder.getEngine().getLiters()); 81 } 82 testMessagesAreCached()83 public void testMessagesAreCached() { 84 Vehicle.Builder vehicleBuilder = Vehicle.newBuilder(); 85 vehicleBuilder.addWheelBuilder().setRadius(1).setWidth(2); 86 vehicleBuilder.addWheelBuilder().setRadius(3).setWidth(4); 87 vehicleBuilder.addWheelBuilder().setRadius(5).setWidth(6); 88 vehicleBuilder.addWheelBuilder().setRadius(7).setWidth(8); 89 90 // Make sure messages are cached. 91 List<Wheel> wheels = new ArrayList<Wheel>(vehicleBuilder.getWheelList()); 92 for (int i = 0; i < wheels.size(); i++) { 93 assertSame(wheels.get(i), vehicleBuilder.getWheel(i)); 94 } 95 96 // Now get builders and check they didn't change. 97 for (int i = 0; i < wheels.size(); i++) { 98 vehicleBuilder.getWheel(i); 99 } 100 for (int i = 0; i < wheels.size(); i++) { 101 assertSame(wheels.get(i), vehicleBuilder.getWheel(i)); 102 } 103 104 // Change just one 105 vehicleBuilder.getWheelBuilder(3).setRadius(20).setWidth(20); 106 107 // Now get wheels and check that only that one changed 108 for (int i = 0; i < wheels.size(); i++) { 109 if (i < 3) { 110 assertSame(wheels.get(i), vehicleBuilder.getWheel(i)); 111 } else { 112 assertNotSame(wheels.get(i), vehicleBuilder.getWheel(i)); 113 } 114 } 115 } 116 testRemove_WithNestedBuilders()117 public void testRemove_WithNestedBuilders() { 118 Vehicle.Builder vehicleBuilder = Vehicle.newBuilder(); 119 vehicleBuilder.addWheelBuilder().setRadius(1).setWidth(1); 120 vehicleBuilder.addWheelBuilder().setRadius(2).setWidth(2); 121 vehicleBuilder.removeWheel(0); 122 123 assertEquals(1, vehicleBuilder.getWheelCount()); 124 assertEquals(2, vehicleBuilder.getWheel(0).getRadius()); 125 } 126 testRemove_WithNestedMessages()127 public void testRemove_WithNestedMessages() { 128 Vehicle.Builder vehicleBuilder = Vehicle.newBuilder(); 129 vehicleBuilder.addWheel(Wheel.newBuilder().setRadius(1).setWidth(1)); 130 vehicleBuilder.addWheel(Wheel.newBuilder().setRadius(2).setWidth(2)); 131 vehicleBuilder.removeWheel(0); 132 133 assertEquals(1, vehicleBuilder.getWheelCount()); 134 assertEquals(2, vehicleBuilder.getWheel(0).getRadius()); 135 } 136 testMerge()137 public void testMerge() { 138 Vehicle vehicle1 = 139 Vehicle.newBuilder() 140 .addWheel(Wheel.newBuilder().setRadius(1).build()) 141 .addWheel(Wheel.newBuilder().setRadius(2).build()) 142 .build(); 143 144 Vehicle vehicle2 = Vehicle.newBuilder().mergeFrom(vehicle1).build(); 145 // List should be the same -- no allocation 146 assertSame(vehicle1.getWheelList(), vehicle2.getWheelList()); 147 148 Vehicle vehicle3 = vehicle1.toBuilder().build(); 149 assertSame(vehicle1.getWheelList(), vehicle3.getWheelList()); 150 } 151 testGettingBuilderMarksFieldAsHaving()152 public void testGettingBuilderMarksFieldAsHaving() { 153 Vehicle.Builder vehicleBuilder = Vehicle.newBuilder(); 154 vehicleBuilder.getEngineBuilder(); 155 Vehicle vehicle = vehicleBuilder.buildPartial(); 156 assertTrue(vehicle.hasEngine()); 157 } 158 } 159