/*
* 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.tomcat.util.net;
import java.nio.BufferOverflowException;
import java.nio.ByteBuffer;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameter;
@RunWith(Parameterized.class)
public class TestSocketBufferHandler {
@Parameterized.Parameters(name = "{index}: direct[{0}]")
public static Collection<Object[]> parameters() {
List<Object[]> parameterSets = new ArrayList<>();
parameterSets.add(new Object[] { Boolean.FALSE });
parameterSets.add(new Object[] { Boolean.TRUE });
return parameterSets;
}
@Parameter(0)
public boolean direct;
@Test
public void testReturnWhenEmpty() {
SocketBufferHandler sbh = new SocketBufferHandler(8, 8, direct);
sbh.unReadReadBuffer(ByteBuffer.wrap(getBytes("WXYZ")));
validate(sbh, "WXYZ");
}
@Test
public void testReturnWhenWritable() {
SocketBufferHandler sbh = new SocketBufferHandler(8, 8, direct);
sbh.configureReadBufferForWrite();
sbh.getReadBuffer().put(getBytes("AB"));
sbh.unReadReadBuffer(ByteBuffer.wrap(getBytes("WXYZ")));
validate(sbh, "WXYZAB");
}
@Test(expected = BufferOverflowException.class)
public void testReturnWhenWritableAndFull() {
SocketBufferHandler sbh = new SocketBufferHandler(8, 8, direct);
sbh.configureReadBufferForWrite();
sbh.getReadBuffer().put(getBytes("ABCDEFGH"));
sbh.unReadReadBuffer(ByteBuffer.wrap(getBytes("WXYZ")));
}
@Test
public void testReturnWhenReadableAndUnread() {
SocketBufferHandler sbh = new SocketBufferHandler(8, 8, direct);
sbh.configureReadBufferForWrite();
sbh.getReadBuffer().put(getBytes("AB"));
sbh.configureReadBufferForRead();
sbh.unReadReadBuffer(ByteBuffer.wrap(getBytes("WXYZ")));
validate(sbh, "WXYZAB");
}
@Test(expected = BufferOverflowException.class)
public void testReturnWhenReadableAndUnreadAndFull() {
SocketBufferHandler sbh = new SocketBufferHandler(8, 8, direct);
sbh.configureReadBufferForWrite();
sbh.getReadBuffer().put(getBytes("ABCDEF"));
sbh.configureReadBufferForRead();
sbh.unReadReadBuffer(ByteBuffer.wrap(getBytes("WXYZ")));
}
@Test
public void testReturnWhenReadableAndPartiallyead() {
SocketBufferHandler sbh = new SocketBufferHandler(8, 8, direct);
sbh.configureReadBufferForWrite();
sbh.getReadBuffer().put(getBytes("ABCDEFGH"));
sbh.configureReadBufferForRead();
for (int i = 0; i < 4; i++) {
sbh.getReadBuffer().get();
}
sbh.unReadReadBuffer(ByteBuffer.wrap(getBytes("WXYZ")));
validate(sbh, "WXYZEFGH");
}
private void validate(SocketBufferHandler sbh, String expected) {
sbh.configureReadBufferForRead();
for (byte b : getBytes(expected)) {
Assert.assertEquals(b, sbh.getReadBuffer().get());
}
Assert.assertEquals(0, sbh.getReadBuffer().remaining());
}
private byte[] getBytes(String input) {
return input.getBytes(StandardCharsets.UTF_8);
}
}