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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 static org.junit.Assert.assertEquals;
import protobuf_unittest.UnittestProto;
import proto3_unittest.UnittestProto3;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Unit tests for discard or preserve unknown fields. */
@RunWith(JUnit4.class)
public class DiscardUnknownFieldsTest {
@Test
public void testProto2() throws Exception {
testProto2Message(UnittestProto.TestEmptyMessage.getDefaultInstance());
testProto2Message(UnittestProto.TestEmptyMessageWithExtensions.getDefaultInstance());
testProto2Message(
DynamicMessage.getDefaultInstance(UnittestProto.TestEmptyMessage.getDescriptor()));
testProto2Message(
DynamicMessage.getDefaultInstance(
UnittestProto.TestEmptyMessageWithExtensions.getDescriptor()));
}
@Test
public void testProto3() throws Exception {
testProto3Message(UnittestProto3.TestEmptyMessage.getDefaultInstance());
testProto3Message(
DynamicMessage.getDefaultInstance(UnittestProto3.TestEmptyMessage.getDescriptor()));
}
private static void testProto2Message(Message message) throws Exception {
assertUnknownFieldsPreserved(message);
assertUnknownFieldsExplicitlyDiscarded(message);
assertReuseCodedInputStreamPreserve(message);
assertUnknownFieldsInUnknownFieldSetArePreserve(message);
}
private static void testProto3Message(Message message) throws Exception {
assertUnknownFieldsPreserved(message);
assertUnknownFieldsExplicitlyDiscarded(message);
assertReuseCodedInputStreamPreserve(message);
assertUnknownFieldsInUnknownFieldSetArePreserve(message);
}
private static void assertReuseCodedInputStreamPreserve(Message message) throws Exception {
final int messageSize = payload.size();
byte[] copied = new byte[messageSize * 2];
payload.copyTo(copied, 0);
payload.copyTo(copied, messageSize);
CodedInputStream input = CodedInputStream.newInstance(copied);
// Use DiscardUnknownFieldsParser to parse the first payload.
int oldLimit = input.pushLimit(messageSize);
Message parsed = DiscardUnknownFieldsParser.wrap(message.getParserForType()).parseFrom(input);
assertEquals(message.getClass().getName(), 0, parsed.getSerializedSize());
input.popLimit(oldLimit);
// Use the normal parser to parse the remaining payload should have unknown fields preserved.
parsed = message.getParserForType().parseFrom(input);
assertEquals(message.getClass().getName(), payload, parsed.toByteString());
}
/**
* {@link Message.Builder#setUnknownFields(UnknownFieldSet)} and {@link
* Message.Builder#mergeUnknownFields(UnknownFieldSet)} should preserve the unknown fields.
*/
private static void assertUnknownFieldsInUnknownFieldSetArePreserve(Message message)
throws Exception {
UnknownFieldSet unknownFields = UnknownFieldSet.newBuilder().mergeFrom(payload).build();
Message built = message.newBuilderForType().setUnknownFields(unknownFields).build();
assertEquals(message.getClass().getName(), payload, built.toByteString());
}
private static void assertUnknownFieldsPreserved(MessageLite message) throws Exception {
MessageLite parsed = message.getParserForType().parseFrom(payload);
assertEquals(message.getClass().getName(), payload, parsed.toByteString());
parsed = message.newBuilderForType().mergeFrom(payload).build();
assertEquals(message.getClass().getName(), payload, parsed.toByteString());
}
private static void assertUnknownFieldsExplicitlyDiscarded(Message message) throws Exception {
Message parsed = DiscardUnknownFieldsParser.wrap(message.getParserForType()).parseFrom(payload);
assertEquals(message.getClass().getName(), 0, parsed.getSerializedSize());
}
private static final ByteString payload =
TestUtilLite.getAllLiteSetBuilder().build().toByteString();
}
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