| /* |
| * 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.core.memory; |
| |
| import org.apache.flink.testutils.serialization.types.SerializationTestType; |
| import org.apache.flink.testutils.serialization.types.SerializationTestTypeFactory; |
| import org.apache.flink.testutils.serialization.types.Util; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayDeque; |
| |
| /** |
| * Tests for the combination of {@link DataOutputSerializer} and {@link DataInputDeserializer}. |
| */ |
| public class DataInputOutputSerializerTest { |
| |
| @Test |
| public void testWrapAsByteBuffer() { |
| SerializationTestType randomInt = Util.randomRecord(SerializationTestTypeFactory.INT); |
| |
| DataOutputSerializer serializer = new DataOutputSerializer(randomInt.length()); |
| MemorySegment segment = MemorySegmentFactory.allocateUnpooledSegment(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<>(); |
| |
| 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(); |
| } |
| } |