| /* |
| * 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.iotdb.tsfile.utils; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import java.io.BufferedInputStream; |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import static org.junit.Assert.fail; |
| |
| public class ReadWriteIOUtilsTest { |
| |
| protected static final int DEFAULT_BUFFER_SIZE = 4096; |
| |
| @Test |
| public void stringSerdeTest() { |
| // 1. not null value |
| String str = "string"; |
| ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(DEFAULT_BUFFER_SIZE); |
| DataOutputStream stream = new DataOutputStream(byteArrayOutputStream); |
| try { |
| ReadWriteIOUtils.write(str, stream); |
| } catch (IOException e) { |
| fail(e.toString()); |
| } |
| |
| String result = |
| ReadWriteIOUtils.readString(ByteBuffer.wrap(byteArrayOutputStream.toByteArray())); |
| Assert.assertNotNull(result); |
| Assert.assertEquals(str, result); |
| |
| // 2. null value |
| str = null; |
| byteArrayOutputStream = new ByteArrayOutputStream(DEFAULT_BUFFER_SIZE); |
| stream = new DataOutputStream(byteArrayOutputStream); |
| try { |
| ReadWriteIOUtils.write(str, stream); |
| } catch (IOException e) { |
| fail(e.toString()); |
| } |
| |
| result = ReadWriteIOUtils.readString(ByteBuffer.wrap(byteArrayOutputStream.toByteArray())); |
| Assert.assertNull(result); |
| Assert.assertEquals(str, result); |
| } |
| |
| @Test |
| public void mapSerdeTest() { |
| // 1. key: not null; value: not null |
| String key = "string"; |
| String value = "string"; |
| Map<String, String> map = new HashMap<>(); |
| map.put(key, value); |
| ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(DEFAULT_BUFFER_SIZE); |
| DataOutputStream stream = new DataOutputStream(byteArrayOutputStream); |
| try { |
| ReadWriteIOUtils.write(map, stream); |
| } catch (IOException e) { |
| fail(e.toString()); |
| } |
| |
| Map<String, String> result = |
| ReadWriteIOUtils.readMap(ByteBuffer.wrap(byteArrayOutputStream.toByteArray())); |
| Assert.assertNotNull(result); |
| Assert.assertEquals(map, result); |
| |
| // 2. key: not null; value: null |
| key = "string"; |
| value = null; |
| map.clear(); |
| map.put(key, value); |
| byteArrayOutputStream = new ByteArrayOutputStream(DEFAULT_BUFFER_SIZE); |
| stream = new DataOutputStream(byteArrayOutputStream); |
| try { |
| ReadWriteIOUtils.write(map, stream); |
| } catch (IOException e) { |
| fail(e.toString()); |
| } |
| |
| result = ReadWriteIOUtils.readMap(ByteBuffer.wrap(byteArrayOutputStream.toByteArray())); |
| Assert.assertNotNull(result); |
| Assert.assertEquals(map, result); |
| |
| // 3. key: null; value: not null |
| key = null; |
| value = "string"; |
| map.clear(); |
| map.put(key, value); |
| byteArrayOutputStream = new ByteArrayOutputStream(DEFAULT_BUFFER_SIZE); |
| stream = new DataOutputStream(byteArrayOutputStream); |
| try { |
| ReadWriteIOUtils.write(map, stream); |
| } catch (IOException e) { |
| fail(e.toString()); |
| } |
| |
| result = ReadWriteIOUtils.readMap(ByteBuffer.wrap(byteArrayOutputStream.toByteArray())); |
| Assert.assertNotNull(result); |
| Assert.assertEquals(map, result); |
| |
| // 4. key: null; value: null |
| key = null; |
| value = null; |
| map.clear(); |
| map.put(key, value); |
| byteArrayOutputStream = new ByteArrayOutputStream(DEFAULT_BUFFER_SIZE); |
| stream = new DataOutputStream(byteArrayOutputStream); |
| try { |
| ReadWriteIOUtils.write(map, stream); |
| } catch (IOException e) { |
| fail(e.toString()); |
| } |
| |
| result = ReadWriteIOUtils.readMap(ByteBuffer.wrap(byteArrayOutputStream.toByteArray())); |
| Assert.assertNotNull(result); |
| Assert.assertEquals(map, result); |
| |
| // 5. empty map |
| map = Collections.emptyMap(); |
| byteArrayOutputStream = new ByteArrayOutputStream(DEFAULT_BUFFER_SIZE); |
| stream = new DataOutputStream(byteArrayOutputStream); |
| try { |
| ReadWriteIOUtils.write(map, stream); |
| } catch (IOException e) { |
| fail(e.toString()); |
| } |
| result = ReadWriteIOUtils.readMap(ByteBuffer.wrap(byteArrayOutputStream.toByteArray())); |
| Assert.assertNotNull(result); |
| Assert.assertTrue(result.isEmpty()); |
| |
| // 6. null |
| map = null; |
| byteArrayOutputStream = new ByteArrayOutputStream(DEFAULT_BUFFER_SIZE); |
| stream = new DataOutputStream(byteArrayOutputStream); |
| try { |
| ReadWriteIOUtils.write(map, stream); |
| } catch (IOException e) { |
| fail(e.toString()); |
| } |
| result = ReadWriteIOUtils.readMap(ByteBuffer.wrap(byteArrayOutputStream.toByteArray())); |
| Assert.assertNull(result); |
| } |
| |
| @Test |
| public void skipInputStreamTest() { |
| int expectedSkipNum = 9000; |
| int totalNum = 10000; |
| try (BufferedInputStream inputStream = |
| new BufferedInputStream(new ByteArrayInputStream(new byte[totalNum]))) { |
| ReadWriteIOUtils.readByte(inputStream); |
| long skipN = inputStream.skip(expectedSkipNum); |
| Assert.assertNotEquals(expectedSkipNum, skipN); |
| Assert.assertNotEquals(totalNum - expectedSkipNum - 1, inputStream.available()); |
| } catch (IOException e) { |
| Assert.fail(e.getMessage()); |
| } |
| try (BufferedInputStream inputStream = |
| new BufferedInputStream(new ByteArrayInputStream(new byte[totalNum]))) { |
| ReadWriteIOUtils.readByte(inputStream); |
| ReadWriteIOUtils.skip(inputStream, expectedSkipNum); |
| Assert.assertEquals(totalNum - expectedSkipNum - 1, inputStream.available()); |
| } catch (IOException e) { |
| Assert.fail(e.getMessage()); |
| } |
| } |
| } |