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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package com.google.protobuf;
import protobuf_unittest.UnittestProto.TestAllExtensions;
import protobuf_unittest.UnittestProto.TestAllTypes;
import junit.framework.TestCase;
/**
* Unit test for {@link LazyField}.
*
* @author xiangl@google.com (Xiang Li)
*/
public class LazyFieldTest extends TestCase {
public void testHashCode() {
MessageLite message = TestUtil.getAllSet();
LazyField lazyField =
createLazyFieldFromMessage(message);
assertEquals(message.hashCode(), lazyField.hashCode());
lazyField.getValue();
assertEquals(message.hashCode(), lazyField.hashCode());
changeValue(lazyField);
// make sure two messages have different hash code
assertNotEqual(message.hashCode(), lazyField.hashCode());
}
public void testHashCodeEx() throws Exception {
TestAllExtensions message = TestUtil.getAllExtensionsSet();
LazyField lazyField = createLazyFieldFromMessage(message);
assertEquals(message.hashCode(), lazyField.hashCode());
lazyField.getValue();
assertEquals(message.hashCode(), lazyField.hashCode());
changeValue(lazyField);
// make sure two messages have different hash code
assertNotEqual(message.hashCode(), lazyField.hashCode());
}
public void testGetValue() {
MessageLite message = TestUtil.getAllSet();
LazyField lazyField = createLazyFieldFromMessage(message);
assertEquals(message, lazyField.getValue());
changeValue(lazyField);
assertNotEqual(message, lazyField.getValue());
}
public void testGetValueEx() throws Exception {
TestAllExtensions message = TestUtil.getAllExtensionsSet();
LazyField lazyField = createLazyFieldFromMessage(message);
assertEquals(message, lazyField.getValue());
changeValue(lazyField);
assertNotEqual(message, lazyField.getValue());
}
public void testEqualsObject() {
MessageLite message = TestUtil.getAllSet();
LazyField lazyField = createLazyFieldFromMessage(message);
assertTrue(lazyField.equals(message));
changeValue(lazyField);
assertFalse(lazyField.equals(message));
assertFalse(message.equals(lazyField.getValue()));
}
@SuppressWarnings("EqualsIncompatibleType") // LazyField.equals() is not symmetric
public void testEqualsObjectEx() throws Exception {
TestAllExtensions message = TestUtil.getAllExtensionsSet();
LazyField lazyField = createLazyFieldFromMessage(message);
assertTrue(lazyField.equals(message));
changeValue(lazyField);
assertFalse(lazyField.equals(message));
assertFalse(message.equals(lazyField.getValue()));
}
// Help methods.
private LazyField createLazyFieldFromMessage(MessageLite message) {
ByteString bytes = message.toByteString();
return new LazyField(message.getDefaultInstanceForType(),
TestUtil.getExtensionRegistry(), bytes);
}
private void changeValue(LazyField lazyField) {
TestAllTypes.Builder builder = TestUtil.getAllSet().toBuilder();
builder.addRepeatedBool(true);
MessageLite newMessage = builder.build();
lazyField.setValue(newMessage);
}
private void assertNotEqual(Object unexpected, Object actual) {
assertFalse(unexpected == actual
|| (unexpected != null && unexpected.equals(actual)));
}
}
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