| /** |
| * 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.hadoop.hbase.io; |
| |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.nio.ByteBuffer; |
| import java.util.EnumSet; |
| |
| import org.apache.hadoop.fs.ByteBufferReadable; |
| import org.apache.hadoop.fs.CanSetDropBehind; |
| import org.apache.hadoop.fs.CanSetReadahead; |
| import org.apache.hadoop.fs.CanUnbuffer; |
| import org.apache.hadoop.fs.FSDataInputStream; |
| import org.apache.hadoop.fs.FSInputStream; |
| import org.apache.hadoop.fs.HasEnhancedByteBufferAccess; |
| import org.apache.hadoop.fs.ReadOption; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.testclassification.SmallTests; |
| import org.apache.hadoop.io.ByteBufferPool; |
| import org.junit.ClassRule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| @Category(SmallTests.class) |
| public class TestFSDataInputStreamWrapper { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestFSDataInputStreamWrapper.class); |
| |
| @Test |
| public void testUnbuffer() throws Exception { |
| InputStream pc = new ParentClass(); |
| FSDataInputStreamWrapper fsdisw1 = |
| new FSDataInputStreamWrapper(new FSDataInputStream(pc)); |
| fsdisw1.unbuffer(); |
| // parent class should be true |
| assertTrue(((ParentClass)pc).getIsCallUnbuffer()); |
| fsdisw1.close(); |
| |
| InputStream cc1 = new ChildClass1(); |
| FSDataInputStreamWrapper fsdisw2 = |
| new FSDataInputStreamWrapper(new FSDataInputStream(cc1)); |
| fsdisw2.unbuffer(); |
| // child1 class should be true |
| assertTrue(((ChildClass1)cc1).getIsCallUnbuffer()); |
| fsdisw2.close(); |
| } |
| |
| private class ParentClass extends FSInputStream |
| implements ByteBufferReadable, CanSetDropBehind, CanSetReadahead, |
| HasEnhancedByteBufferAccess, CanUnbuffer { |
| |
| public boolean isCallUnbuffer = false; |
| |
| public boolean getIsCallUnbuffer(){ |
| return isCallUnbuffer; |
| } |
| |
| @Override |
| public void unbuffer() { |
| isCallUnbuffer = true; |
| } |
| |
| @Override |
| public int read() throws IOException { |
| return 0; |
| } |
| |
| @Override |
| public ByteBuffer read(ByteBufferPool paramByteBufferPool, |
| int paramInt, EnumSet<ReadOption> paramEnumSet) |
| throws IOException, UnsupportedOperationException { |
| return null; |
| } |
| |
| @Override |
| public void releaseBuffer(ByteBuffer paramByteBuffer) { |
| |
| } |
| |
| @Override |
| public void setReadahead(Long paramLong) |
| throws IOException, UnsupportedOperationException { |
| |
| } |
| |
| @Override |
| public void setDropBehind(Boolean paramBoolean) |
| throws IOException, UnsupportedOperationException { |
| |
| } |
| |
| @Override |
| public int read(ByteBuffer paramByteBuffer) throws IOException { |
| return 0; |
| } |
| |
| @Override |
| public void seek(long paramLong) throws IOException { |
| |
| } |
| |
| @Override |
| public long getPos() throws IOException { |
| return 0; |
| } |
| |
| @Override |
| public boolean seekToNewSource(long paramLong) throws IOException { |
| return false; |
| } |
| } |
| |
| private class ChildClass1 extends ParentClass{ |
| @Override |
| public void unbuffer() { |
| isCallUnbuffer = true; |
| } |
| } |
| } |