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Issue #2604 - Improving ByteAccumulator testing and errors 

Signed-off-by: Joakim Erdfelt <joakim.erdfelt@gmail.com>
This commit is contained in:
Joakim Erdfelt 2018-05-31 07:19:09 -05:00
parent 9019c83517
commit 8d03e193b4
2 changed files with 102 additions and 1 deletions
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3
jetty-websocket/websocket-common/src/main/java/org/eclipse/jetty/websocket/common/extensions/compress/ByteAccumulator.java
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@ -40,7 +40,8 @@ public class ByteAccumulator
{
if (this.length + length > maxSize)
{
throw new MessageTooLargeException("Frame is too large");
String err = String.format("Resulting message size [%,d] is too large for configured max of [%,d]", this.length + length, maxSize);
throw new MessageTooLargeException(err);
}
byte copy[] = new byte[length - offset];

100
jetty-websocket/websocket-common/src/test/java/org/eclipse/jetty/websocket/common/extensions/compress/ByteAccumulatorTest.java Normal file
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@ -0,0 +1,100 @@
//
// ========================================================================
// Copyright (c) 1995-2018 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.websocket.common.extensions.compress;
import static java.nio.charset.StandardCharsets.UTF_8;
import static org.hamcrest.CoreMatchers.containsString;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.MatcherAssert.assertThat;
import java.nio.ByteBuffer;
import org.eclipse.jetty.util.BufferUtil;
import org.eclipse.jetty.websocket.api.MessageTooLargeException;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
public class ByteAccumulatorTest
{
@Rule
public ExpectedException expectedException = ExpectedException.none();
@Test
public void testCopyNormal()
{
ByteAccumulator accumulator = new ByteAccumulator(10_000);
byte hello[] = "Hello".getBytes(UTF_8);
byte space[] = " ".getBytes(UTF_8);
byte world[] = "World".getBytes(UTF_8);
accumulator.copyChunk(hello, 0, hello.length);
accumulator.copyChunk(space, 0, space.length);
accumulator.copyChunk(world, 0, world.length);
assertThat("Length", accumulator.getLength(), is(hello.length + space.length + world.length));
ByteBuffer out = ByteBuffer.allocate(200);
accumulator.transferTo(out);
String result = BufferUtil.toUTF8String(out);
assertThat("ByteBuffer to UTF8", result, is("Hello World"));
}
@Test
public void testTransferTo_NotEnoughSpace()
{
ByteAccumulator accumulator = new ByteAccumulator(10_000);
byte hello[] = "Hello".getBytes(UTF_8);
byte space[] = " ".getBytes(UTF_8);
byte world[] = "World".getBytes(UTF_8);
accumulator.copyChunk(hello, 0, hello.length);
accumulator.copyChunk(space, 0, space.length);
accumulator.copyChunk(world, 0, world.length);
int length = hello.length + space.length + world.length;
assertThat("Length", accumulator.getLength(), is(length));
ByteBuffer out = ByteBuffer.allocate(length - 2); // intentionally too small ByteBuffer
expectedException.expect(IllegalArgumentException.class);
expectedException.expectMessage(containsString("Not enough space in ByteBuffer"));
accumulator.transferTo(out);
}
@Test
public void testCopyChunk_NotEnoughSpace()
{
byte hello[] = "Hello".getBytes(UTF_8);
byte space[] = " ".getBytes(UTF_8);
byte world[] = "World".getBytes(UTF_8);
int length = hello.length + space.length + world.length;
ByteAccumulator accumulator = new ByteAccumulator(length - 2); // intentionally too small of a max
accumulator.copyChunk(hello, 0, hello.length);
accumulator.copyChunk(space, 0, space.length);
expectedException.expect(MessageTooLargeException.class);
expectedException.expectMessage(containsString("too large for configured max"));
accumulator.copyChunk(world, 0, world.length);
}
}