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/* * #%L * ByteToMessageDecoderTest.java - mongodb-async-netty - Allanbank Consulting, Inc. * %% * Copyright (C) 2011 - 2015 Allanbank Consulting, Inc. * %% * Licensed 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. * #L% */ package com.allanbank.mongodb.netty; import static org.easymock.EasyMock.createMock; import static org.easymock.EasyMock.replay; import static org.easymock.EasyMock.verify; import static org.hamcrest.Matchers.instanceOf; import static org.hamcrest.Matchers.is; import static org.hamcrest.Matchers.nullValue; import static org.junit.Assert.assertThat; import static org.junit.Assert.fail; import io.netty.buffer.ByteBuf; import io.netty.buffer.ByteBufAllocator; import io.netty.buffer.ByteBufOutputStream; import io.netty.buffer.SlicedByteBuf; import io.netty.buffer.UnpooledByteBufAllocator; import io.netty.channel.ChannelHandlerContext; import java.util.Collections; import java.util.Random; import org.junit.Test; import com.allanbank.mongodb.MongoDbException; import com.allanbank.mongodb.ReadPreference; import com.allanbank.mongodb.bson.builder.BuilderFactory; import com.allanbank.mongodb.bson.io.BsonOutputStream; import com.allanbank.mongodb.bson.io.StringDecoderCache; import com.allanbank.mongodb.builder.Find; import com.allanbank.mongodb.client.Message; import com.allanbank.mongodb.client.message.Delete; import com.allanbank.mongodb.client.message.GetMore; import com.allanbank.mongodb.client.message.Insert; import com.allanbank.mongodb.client.message.KillCursors; import com.allanbank.mongodb.client.message.Query; import com.allanbank.mongodb.client.message.Reply; import com.allanbank.mongodb.client.message.Update; /** * ByteToMessageDecoderTest provides tests for the {@link ByteToMessageDecoder} * class. * * @api.no This class is <b>NOT</b> part of the drivers API. This class may be * mutated in incompatible ways between any two releases of the driver. * @copyright 2015, Allanbank Consulting, Inc., All Rights Reserved */ public class ByteToMessageDecoderTest { /** The test's allocator of {@link ByteBuf} instances. */ private static final ByteBufAllocator ourAllocator = UnpooledByteBufAllocator.DEFAULT; /** * Test method for * {@link ByteToMessageDecoder#decode(ChannelHandlerContext, ByteBuf)}. * * @throws Exception * On a test failure. */ @Test public void testDecodeBadOpCode() throws Exception { final Random rand = new Random(System.currentTimeMillis()); final Message msg = new KillCursors(new long[] { rand.nextLong() }, ReadPreference.PRIMARY); final int msgId = rand.nextInt() & 0xFFFFFF; final ByteBuf buffer = ourAllocator.buffer(); final ByteBufOutputStream out = new ByteBufOutputStream(buffer); final BsonOutputStream bout = new BsonOutputStream(out); msg.write(msgId, bout); // OpCode is bytes 12-16. buffer.setByte(12, (byte) 0xAA); buffer.setByte(13, (byte) 0xBB); buffer.setByte(14, (byte) 0xCC); buffer.setByte(15, (byte) 0xDD); final ChannelHandlerContext mockContext = createMock(ChannelHandlerContext.class); replay(mockContext); final ByteToMessageDecoder decoder = new ByteToMessageDecoder(new StringDecoderCache()); try { decoder.decode(mockContext, out.buffer()); fail("Should have thrown a MongoDBException."); } catch (final MongoDbException good) { assertThat(good.getMessage(), is("Unexpected operation read '" + 0xDDCCBBAA + "'.")); } verify(mockContext); } /** * Test method for * {@link ByteToMessageDecoder#decode(ChannelHandlerContext, ByteBuf)}. * * @throws Exception * On a test failure. */ @Test public void testDecodeDelete() throws Exception { final Random rand = new Random(System.currentTimeMillis()); final Message msg = new Delete("db", "c", Find.ALL, rand.nextBoolean()); runDecode(msg, rand); } /** * Test method for * {@link ByteToMessageDecoder#decode(ChannelHandlerContext, ByteBuf)}. * * @throws Exception * On a test failure. */ @Test public void testDecodeGetMore() throws Exception { final Random rand = new Random(System.currentTimeMillis()); final Message msg = new GetMore("db", "c", rand.nextLong(), rand.nextInt(), ReadPreference.PRIMARY); runDecode(msg, rand); } /** * Test method for * {@link ByteToMessageDecoder#decode(ChannelHandlerContext, ByteBuf)}. * * @throws Exception * On a test failure. */ @Test public void testDecodeInCompleteFrame() throws Exception { final Random rand = new Random(System.currentTimeMillis()); final Message msg = new KillCursors(new long[] { rand.nextLong() }, ReadPreference.PRIMARY); final int msgId = rand.nextInt() & 0xFFFFFF; final ByteBuf buffer = ourAllocator.buffer(); final ByteBufOutputStream out = new ByteBufOutputStream(buffer); final BsonOutputStream bout = new BsonOutputStream(out); msg.write(msgId, bout); final ChannelHandlerContext mockContext = createMock(ChannelHandlerContext.class); replay(mockContext); final ByteToMessageDecoder decoder = new ByteToMessageDecoder(new StringDecoderCache()); final Object result = decoder.decode(mockContext, buffer.slice(0, buffer.writerIndex() - 1)); assertThat(result, nullValue()); verify(mockContext); } /** * Test method for * {@link ByteToMessageDecoder#decode(ChannelHandlerContext, ByteBuf)}. * * @throws Exception * On a test failure. */ @Test public void testDecodeInsert() throws Exception { final Random rand = new Random(System.currentTimeMillis()); final Message msg = new Insert("db", "c", Collections.singletonList(Find.ALL), rand.nextBoolean()); runDecode(msg, rand); } /** * Test method for * {@link ByteToMessageDecoder#decode(ChannelHandlerContext, ByteBuf)}. * * @throws Exception * On a test failure. */ @Test public void testDecodeKillCursors() throws Exception { final Random rand = new Random(System.currentTimeMillis()); final Message msg = new KillCursors(new long[] { rand.nextLong() }, ReadPreference.PRIMARY); runDecode(msg, rand); } /** * Test method for * {@link ByteToMessageDecoder#decode(ChannelHandlerContext, ByteBuf)}. * * @throws Exception * On a test failure. */ @Test public void testDecodeQuery() throws Exception { final Random rand = new Random(System.currentTimeMillis()); final Message msg = new Query("db", "c", Find.ALL, null, 0, 0, rand.nextInt() & 0xFFFFFF, rand.nextBoolean(), ReadPreference.PRIMARY, rand.nextBoolean(), rand.nextBoolean(), rand.nextBoolean(), rand.nextBoolean()); runDecode(msg, rand); } /** * Test method for * {@link ByteToMessageDecoder#decode(ChannelHandlerContext, ByteBuf)}. * * @throws Exception * On a test failure. */ @Test public void testDecodeReply() throws Exception { final Random rand = new Random(System.currentTimeMillis()); final Reply reply = new Reply(123, 456, 789, Collections.singletonList(BuilderFactory.d().asDocument()), true, false, false, false); runDecode(reply, rand); } /** * Test method for * {@link ByteToMessageDecoder#decode(ChannelHandlerContext, ByteBuf)}. * * @throws Exception * On a test failure. */ @Test public void testDecodeUpdate() throws Exception { final Random rand = new Random(System.currentTimeMillis()); final Message msg = new Update("db", "collection", Find.ALL, Find.ALL, true, false); runDecode(msg, rand); } /** * Test method for * {@link ByteToMessageDecoder#extractFrame(ChannelHandlerContext, ByteBuf, int, int)} * . */ @Test public void testExtractFrameChannelHandlerContextByteBufIntInt() { final ByteBuf buffer = ourAllocator.buffer(); buffer.writeBytes(new byte[1000]); final ChannelHandlerContext mockContext = createMock(ChannelHandlerContext.class); replay(mockContext); final ByteToMessageDecoder decoder = new ByteToMessageDecoder(new StringDecoderCache()); final ByteBuf result = decoder.extractFrame(mockContext, buffer, 100, 200); assertThat(result, instanceOf(SlicedByteBuf.class)); assertThat(buffer.getByte(100), is((byte) 0)); result.setByte(0, 1); assertThat(buffer.getByte(100), is((byte) 1)); verify(mockContext); } /** * Performs the basic receive test with the message. * * @param message * The message to send. * @param random * The source of random for the test. * @throws Exception * On a test failure. */ private void runDecode(final Message message, final Random random) throws Exception { final ByteBuf buffer = ourAllocator.buffer(); final ByteBufOutputStream out = new ByteBufOutputStream(buffer); final BsonOutputStream bout = new BsonOutputStream(out); final int msgId = random.nextInt() & 0xFFFFFF; message.write(msgId, bout); final ChannelHandlerContext mockContext = createMock(ChannelHandlerContext.class); replay(mockContext); final ByteToMessageDecoder decoder = new ByteToMessageDecoder(new StringDecoderCache()); final Object result = decoder.decode(mockContext, out.buffer()); assertThat(result, is((Object) message)); verify(mockContext); } }