/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.runtime.io.network.serialization;
import org.junit.Assert;
import org.apache.flink.core.memory.MemorySegment;
import org.apache.flink.runtime.io.network.serialization.DataInputDeserializer;
import org.apache.flink.runtime.io.network.serialization.DataOutputSerializer;
import org.apache.flink.runtime.io.network.serialization.types.SerializationTestType;
import org.apache.flink.runtime.io.network.serialization.types.SerializationTestTypeFactory;
import org.apache.flink.runtime.io.network.serialization.types.Util;
import org.junit.Test;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.ArrayDeque;
public class DataInputOutputSerializerTest {
@Test
public void testWrapAsByteBuffer() {
SerializationTestType randomInt = Util.randomRecord(SerializationTestTypeFactory.INT);
DataOutputSerializer serializer = new DataOutputSerializer(randomInt.length());
MemorySegment segment = new MemorySegment(new byte[randomInt.length()]);
try {
// empty buffer, read buffer should be empty
ByteBuffer wrapper = serializer.wrapAsByteBuffer();
Assert.assertEquals(0, wrapper.position());
Assert.assertEquals(0, wrapper.limit());
// write to data output, read buffer should still be empty
randomInt.write(serializer);
Assert.assertEquals(0, wrapper.position());
Assert.assertEquals(0, wrapper.limit());
// get updated read buffer, read buffer should contain written data
wrapper = serializer.wrapAsByteBuffer();
Assert.assertEquals(0, wrapper.position());
Assert.assertEquals(randomInt.length(), wrapper.limit());
// clear data output, read buffer should still contain written data
serializer.clear();
Assert.assertEquals(0, wrapper.position());
Assert.assertEquals(randomInt.length(), wrapper.limit());
// get updated read buffer, should be empty
wrapper = serializer.wrapAsByteBuffer();
Assert.assertEquals(0, wrapper.position());
Assert.assertEquals(0, wrapper.limit());
// write to data output and read back to memory
randomInt.write(serializer);
wrapper = serializer.wrapAsByteBuffer();
segment.put(0, wrapper, randomInt.length());
Assert.assertEquals(randomInt.length(), wrapper.position());
Assert.assertEquals(randomInt.length(), wrapper.limit());
} catch (IOException e) {
e.printStackTrace();
Assert.fail("Test encountered an unexpected exception.");
}
}
@Test
public void testRandomValuesWriteRead() {
final int numElements = 100000;
final ArrayDeque<SerializationTestType> reference = new ArrayDeque<SerializationTestType>();
DataOutputSerializer serializer = new DataOutputSerializer(1);
for (SerializationTestType value : Util.randomRecords(numElements)) {
reference.add(value);
try {
value.write(serializer);
} catch (IOException e) {
e.printStackTrace();
Assert.fail("Test encountered an unexpected exception.");
}
}
DataInputDeserializer deserializer = new DataInputDeserializer(serializer.wrapAsByteBuffer());
for (SerializationTestType expected : reference) {
try {
SerializationTestType actual = expected.getClass().newInstance();
actual.read(deserializer);
Assert.assertEquals(expected, actual);
} catch (Exception e) {
e.printStackTrace();
Assert.fail("Test encountered an unexpected exception.");
}
}
reference.clear();
}
}