1 // Protocol Buffers - Google's data interchange format
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30 
31 package com.google.protobuf;
32 
33 import protobuf_unittest.UnittestProto.TestAllExtensions;
34 import protobuf_unittest.UnittestProto.TestAllTypes;
35 
36 import java.io.IOException;
37 import junit.framework.TestCase;
38 
39 /**
40  * Unit test for {@link LazyField}.
41  *
42  * @author xiangl@google.com (Xiang Li)
43  */
44 public class LazyFieldTest extends TestCase {
testHashCode()45   public void testHashCode() {
46     MessageLite message = TestUtil.getAllSet();
47     LazyField lazyField =
48         createLazyFieldFromMessage(message);
49     assertEquals(message.hashCode(), lazyField.hashCode());
50     lazyField.getValue();
51     assertEquals(message.hashCode(), lazyField.hashCode());
52     changeValue(lazyField);
53     // make sure two messages have different hash code
54     assertNotEqual(message.hashCode(), lazyField.hashCode());
55   }
56 
testHashCodeEx()57   public void testHashCodeEx() throws Exception {
58     TestAllExtensions message = TestUtil.getAllExtensionsSet();
59     LazyField lazyField = createLazyFieldFromMessage(message);
60     assertEquals(message.hashCode(), lazyField.hashCode());
61     lazyField.getValue();
62     assertEquals(message.hashCode(), lazyField.hashCode());
63     changeValue(lazyField);
64     // make sure two messages have different hash code
65     assertNotEqual(message.hashCode(), lazyField.hashCode());
66   }
67 
testGetValue()68   public void testGetValue() {
69     MessageLite message = TestUtil.getAllSet();
70     LazyField lazyField = createLazyFieldFromMessage(message);
71     assertEquals(message, lazyField.getValue());
72     changeValue(lazyField);
73     assertNotEqual(message, lazyField.getValue());
74   }
75 
testGetValueEx()76   public void testGetValueEx() throws Exception {
77     TestAllExtensions message = TestUtil.getAllExtensionsSet();
78     LazyField lazyField = createLazyFieldFromMessage(message);
79     assertEquals(message, lazyField.getValue());
80     changeValue(lazyField);
81     assertNotEqual(message, lazyField.getValue());
82   }
83 
testEqualsObject()84   public void testEqualsObject() {
85     MessageLite message = TestUtil.getAllSet();
86     LazyField lazyField = createLazyFieldFromMessage(message);
87     assertTrue(lazyField.equals(message));
88     changeValue(lazyField);
89     assertFalse(lazyField.equals(message));
90     assertFalse(message.equals(lazyField.getValue()));
91   }
92 
testEqualsObjectEx()93   public void testEqualsObjectEx() throws Exception {
94     TestAllExtensions message = TestUtil.getAllExtensionsSet();
95     LazyField lazyField = createLazyFieldFromMessage(message);
96     assertTrue(lazyField.equals(message));
97     changeValue(lazyField);
98     assertFalse(lazyField.equals(message));
99     assertFalse(message.equals(lazyField.getValue()));
100   }
101 
102   // Help methods.
103 
createLazyFieldFromMessage(MessageLite message)104   private LazyField createLazyFieldFromMessage(MessageLite message) {
105     ByteString bytes = message.toByteString();
106     return new LazyField(message.getDefaultInstanceForType(),
107         TestUtil.getExtensionRegistry(), bytes);
108   }
109 
changeValue(LazyField lazyField)110   private void changeValue(LazyField lazyField) {
111     TestAllTypes.Builder builder = TestUtil.getAllSet().toBuilder();
112     builder.addRepeatedBool(true);
113     MessageLite newMessage = builder.build();
114     lazyField.setValue(newMessage);
115   }
116 
assertNotEqual(Object unexpected, Object actual)117   private void assertNotEqual(Object unexpected, Object actual) {
118     assertFalse(unexpected == actual
119         || (unexpected != null && unexpected.equals(actual)));
120   }
121 }
122