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.Vehicle; 34 import protobuf_unittest.Wheel; 35 import java.util.ArrayList; 36 import java.util.List; 37 import junit.framework.TestCase; 38 39 /** 40 * Test cases that exercise end-to-end use cases involving {@link SingleFieldBuilder} and {@link 41 * RepeatedFieldBuilder}. 42 * 43 * @author jonp@google.com (Jon Perlow) 44 */ 45 public class NestedBuildersTest extends TestCase { 46 testMessagesAndBuilders()47 public void testMessagesAndBuilders() { 48 Vehicle.Builder vehicleBuilder = Vehicle.newBuilder(); 49 vehicleBuilder.addWheelBuilder().setRadius(4).setWidth(1); 50 vehicleBuilder.addWheelBuilder().setRadius(4).setWidth(2); 51 vehicleBuilder.addWheelBuilder().setRadius(4).setWidth(3); 52 vehicleBuilder.addWheelBuilder().setRadius(4).setWidth(4); 53 vehicleBuilder.getEngineBuilder().setLiters(10); 54 55 Vehicle vehicle = vehicleBuilder.build(); 56 assertEquals(4, vehicle.getWheelCount()); 57 for (int i = 0; i < 4; i++) { 58 Wheel wheel = vehicle.getWheel(i); 59 assertEquals(4, wheel.getRadius()); 60 assertEquals(i + 1, wheel.getWidth()); 61 } 62 assertEquals(10, vehicle.getEngine().getLiters()); 63 64 for (int i = 0; i < 4; i++) { 65 vehicleBuilder.getWheelBuilder(i).setRadius(5).setWidth(i + 10); 66 } 67 vehicleBuilder.getEngineBuilder().setLiters(20); 68 69 vehicle = vehicleBuilder.build(); 70 for (int i = 0; i < 4; i++) { 71 Wheel wheel = vehicle.getWheel(i); 72 assertEquals(5, wheel.getRadius()); 73 assertEquals(i + 10, wheel.getWidth()); 74 } 75 assertEquals(20, vehicle.getEngine().getLiters()); 76 assertTrue(vehicle.hasEngine()); 77 } 78 testMessagesAreCached()79 public void testMessagesAreCached() { 80 Vehicle.Builder vehicleBuilder = Vehicle.newBuilder(); 81 vehicleBuilder.addWheelBuilder().setRadius(1).setWidth(2); 82 vehicleBuilder.addWheelBuilder().setRadius(3).setWidth(4); 83 vehicleBuilder.addWheelBuilder().setRadius(5).setWidth(6); 84 vehicleBuilder.addWheelBuilder().setRadius(7).setWidth(8); 85 86 // Make sure messages are cached. 87 List<Wheel> wheels = new ArrayList<Wheel>(vehicleBuilder.getWheelList()); 88 for (int i = 0; i < wheels.size(); i++) { 89 assertSame(wheels.get(i), vehicleBuilder.getWheel(i)); 90 } 91 92 // Now get builders and check they didn't change. 93 for (int i = 0; i < wheels.size(); i++) { 94 vehicleBuilder.getWheel(i); 95 } 96 for (int i = 0; i < wheels.size(); i++) { 97 assertSame(wheels.get(i), vehicleBuilder.getWheel(i)); 98 } 99 100 // Change just one 101 vehicleBuilder.getWheelBuilder(3).setRadius(20).setWidth(20); 102 103 // Now get wheels and check that only that one changed 104 for (int i = 0; i < wheels.size(); i++) { 105 if (i < 3) { 106 assertSame(wheels.get(i), vehicleBuilder.getWheel(i)); 107 } else { 108 assertNotSame(wheels.get(i), vehicleBuilder.getWheel(i)); 109 } 110 } 111 } 112 testRemove_WithNestedBuilders()113 public void testRemove_WithNestedBuilders() { 114 Vehicle.Builder vehicleBuilder = Vehicle.newBuilder(); 115 vehicleBuilder.addWheelBuilder().setRadius(1).setWidth(1); 116 vehicleBuilder.addWheelBuilder().setRadius(2).setWidth(2); 117 vehicleBuilder.removeWheel(0); 118 119 assertEquals(1, vehicleBuilder.getWheelCount()); 120 assertEquals(2, vehicleBuilder.getWheel(0).getRadius()); 121 } 122 testRemove_WithNestedMessages()123 public void testRemove_WithNestedMessages() { 124 Vehicle.Builder vehicleBuilder = Vehicle.newBuilder(); 125 vehicleBuilder.addWheel(Wheel.newBuilder().setRadius(1).setWidth(1)); 126 vehicleBuilder.addWheel(Wheel.newBuilder().setRadius(2).setWidth(2)); 127 vehicleBuilder.removeWheel(0); 128 129 assertEquals(1, vehicleBuilder.getWheelCount()); 130 assertEquals(2, vehicleBuilder.getWheel(0).getRadius()); 131 } 132 testMerge()133 public void testMerge() { 134 Vehicle vehicle1 = 135 Vehicle.newBuilder() 136 .addWheel(Wheel.newBuilder().setRadius(1).build()) 137 .addWheel(Wheel.newBuilder().setRadius(2).build()) 138 .build(); 139 140 Vehicle vehicle2 = Vehicle.newBuilder().mergeFrom(vehicle1).build(); 141 // List should be the same -- no allocation 142 assertSame(vehicle1.getWheelList(), vehicle2.getWheelList()); 143 144 Vehicle vehicle3 = vehicle1.toBuilder().build(); 145 assertSame(vehicle1.getWheelList(), vehicle3.getWheelList()); 146 } 147 testGettingBuilderMarksFieldAsHaving()148 public void testGettingBuilderMarksFieldAsHaving() { 149 Vehicle.Builder vehicleBuilder = Vehicle.newBuilder(); 150 vehicleBuilder.getEngineBuilder(); 151 Vehicle vehicle = vehicleBuilder.buildPartial(); 152 assertTrue(vehicle.hasEngine()); 153 } 154 } 155