flink-java/src/test/java/org/apache/flink/api/java/io/TypeSerializerFormatTest.java

/*
 * 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.api.java.io;

import org.apache.flink.api.common.ExecutionConfig;
import org.apache.flink.api.common.io.BinaryInputFormat;
import org.apache.flink.api.common.io.BinaryOutputFormat;
import org.apache.flink.api.common.io.BlockInfo;
import org.apache.flink.api.common.io.SequentialFormatTestBase;
import org.apache.flink.api.common.typeinfo.TypeInformation;
import org.apache.flink.api.common.typeutils.TypeSerializer;
import org.apache.flink.api.java.tuple.Tuple2;
import org.apache.flink.api.java.typeutils.TypeExtractor;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.core.fs.FileSystem;
import org.apache.flink.core.fs.Path;
import org.apache.flink.core.memory.DataOutputView;

import org.junit.Assert;
import org.junit.Before;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;

import java.io.IOException;

/**
 * Tests for type serialization format.
 */
@RunWith(Parameterized.class)
public class TypeSerializerFormatTest extends SequentialFormatTestBase<Tuple2<Integer, String>> {

	TypeInformation<Tuple2<Integer, String>> resultType = TypeExtractor.getForObject(getRecord(0));

	private TypeSerializer<Tuple2<Integer, String>> serializer;

	private BlockInfo block;

	public TypeSerializerFormatTest(int numberOfTuples, long blockSize, int parallelism) {
		super(numberOfTuples, blockSize, parallelism);

		resultType = TypeExtractor.getForObject(getRecord(0));

		serializer = resultType.createSerializer(new ExecutionConfig());
	}

	@Before
	public void setup(){
		block = createInputFormat().createBlockInfo();
	}

	@Override
	protected BinaryInputFormat<Tuple2<Integer, String>> createInputFormat() {
		Configuration configuration = new Configuration();

		final TypeSerializerInputFormat<Tuple2<Integer, String>> inputFormat = new
				TypeSerializerInputFormat<Tuple2<Integer, String>>(resultType);
		inputFormat.setFilePath(this.tempFile.toURI().toString());
		inputFormat.setBlockSize(this.blockSize);

		inputFormat.configure(configuration);
		return inputFormat;
	}

	@Override
	protected BinaryOutputFormat<Tuple2<Integer, String>> createOutputFormat(String path, Configuration configuration) throws IOException {
		TypeSerializerOutputFormat<Tuple2<Integer, String>> outputFormat = new
				TypeSerializerOutputFormat<Tuple2<Integer, String>>();

		outputFormat.setSerializer(serializer);
		outputFormat.setOutputFilePath(new Path(path));
		outputFormat.setWriteMode(FileSystem.WriteMode.OVERWRITE);

		configuration = configuration == null ? new Configuration() : configuration;

		outputFormat.configure(configuration);
		outputFormat.open(0, 1);

		return outputFormat;
	}

	@Override
	protected int getInfoSize() {
		return block.getInfoSize();
	}

	@Override
	protected Tuple2<Integer, String> getRecord(int index) {
		return new Tuple2<Integer, String>(index, String.valueOf(index));
	}

	@Override
	protected Tuple2<Integer, String> createInstance() {
		return new Tuple2<Integer, String>();
	}

	@Override
	protected void writeRecord(Tuple2<Integer, String> record, DataOutputView outputView) throws IOException {
		serializer.serialize(record, outputView);
	}

	@Override
	protected void checkEquals(Tuple2<Integer, String> expected, Tuple2<Integer, String> actual) {
		Assert.assertEquals(expected.f0, actual.f0);
		Assert.assertEquals(expected.f1, actual.f1);
	}
}