| /* |
| * 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.cassandra.net; |
| |
| import java.io.EOFException; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import com.google.common.collect.Lists; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| import org.apache.cassandra.config.DatabaseDescriptor; |
| import org.apache.cassandra.net.ChunkedInputPlus; |
| import org.apache.cassandra.net.ShareableBytes; |
| |
| import static org.junit.Assert.*; |
| |
| public class ChunkedInputPlusTest |
| { |
| @BeforeClass |
| public static void setUp() |
| { |
| DatabaseDescriptor.clientInitialization(); |
| } |
| |
| @Test(expected = IllegalArgumentException.class) |
| public void testEmptyIterable() |
| { |
| ChunkedInputPlus.of(Collections.emptyList()); |
| } |
| |
| @Test |
| public void testUnderRead() throws IOException |
| { |
| List<ShareableBytes> chunks = Lists.newArrayList( |
| chunk(1, 1), chunk(2, 2), chunk(3, 3) |
| ); |
| |
| try (ChunkedInputPlus input = ChunkedInputPlus.of(chunks)) |
| { |
| byte[] readBytes = new byte[5]; |
| input.readFully(readBytes); |
| assertArrayEquals(new byte[] { 1, 2, 2, 3, 3 }, readBytes); |
| |
| assertFalse(chunks.get(0).hasRemaining()); |
| assertFalse(chunks.get(1).hasRemaining()); |
| assertTrue (chunks.get(2).hasRemaining()); |
| |
| assertTrue (chunks.get(0).isReleased()); |
| assertTrue (chunks.get(1).isReleased()); |
| assertFalse(chunks.get(2).isReleased()); |
| } |
| |
| // close should release the last chunk |
| assertTrue(chunks.get(2).isReleased()); |
| } |
| |
| @Test |
| public void testExactRead() throws IOException |
| { |
| List<ShareableBytes> chunks = Lists.newArrayList( |
| chunk(1, 1), chunk(2, 2), chunk(3, 3) |
| ); |
| |
| try (ChunkedInputPlus input = ChunkedInputPlus.of(chunks)) |
| { |
| byte[] readBytes = new byte[6]; |
| input.readFully(readBytes); |
| assertArrayEquals(new byte[] { 1, 2, 2, 3, 3, 3 }, readBytes); |
| |
| assertFalse(chunks.get(0).hasRemaining()); |
| assertFalse(chunks.get(1).hasRemaining()); |
| assertFalse(chunks.get(2).hasRemaining()); |
| |
| assertTrue (chunks.get(0).isReleased()); |
| assertTrue (chunks.get(1).isReleased()); |
| assertFalse(chunks.get(2).isReleased()); |
| } |
| |
| // close should release the last chunk |
| assertTrue(chunks.get(2).isReleased()); |
| } |
| |
| @Test |
| public void testOverRead() throws IOException |
| { |
| List<ShareableBytes> chunks = Lists.newArrayList( |
| chunk(1, 1), chunk(2, 2), chunk(3, 3) |
| ); |
| |
| boolean eofCaught = false; |
| try (ChunkedInputPlus input = ChunkedInputPlus.of(chunks)) |
| { |
| byte[] readBytes = new byte[7]; |
| input.readFully(readBytes); |
| assertArrayEquals(new byte[] { 1, 2, 2, 3, 3, 3, 4 }, readBytes); |
| } |
| catch (EOFException e) |
| { |
| eofCaught = true; |
| |
| assertFalse(chunks.get(0).hasRemaining()); |
| assertFalse(chunks.get(1).hasRemaining()); |
| assertFalse(chunks.get(2).hasRemaining()); |
| |
| assertTrue (chunks.get(2).isReleased()); |
| assertTrue (chunks.get(1).isReleased()); |
| assertTrue (chunks.get(2).isReleased()); |
| } |
| assertTrue(eofCaught); |
| } |
| |
| @Test |
| public void testRemainder() throws IOException |
| { |
| List<ShareableBytes> chunks = Lists.newArrayList( |
| chunk(1, 1), chunk(2, 2), chunk(3, 3) |
| ); |
| |
| try (ChunkedInputPlus input = ChunkedInputPlus.of(chunks)) |
| { |
| byte[] readBytes = new byte[5]; |
| input.readFully(readBytes); |
| assertArrayEquals(new byte[] { 1, 2, 2, 3, 3 }, readBytes); |
| |
| assertEquals(1, input.remainder()); |
| |
| assertTrue(chunks.get(0).isReleased()); |
| assertTrue(chunks.get(1).isReleased()); |
| assertTrue(chunks.get(2).isReleased()); // should be released by remainder() |
| } |
| } |
| |
| private ShareableBytes chunk(int size, int fill) |
| { |
| ByteBuffer buffer = ByteBuffer.allocate(size); |
| Arrays.fill(buffer.array(), (byte) fill); |
| return ShareableBytes.wrap(buffer); |
| } |
| } |