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* Added ReadOnlyChannelBufferTest

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* Added ReadOnlyChannelBuffer.toByteBuffers
This commit is contained in:
Trustin Lee 2008-09-04 12:37:37 +00:00
parent d9a37093e2
commit 79499476c1
2 changed files with 204 additions and 1 deletions
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11
src/main/java/org/jboss/netty/buffer/ReadOnlyChannelBuffer.java
View File

@ -146,7 +146,7 @@ public class ReadOnlyChannelBuffer extends AbstractChannelBuffer implements Wrap
}
public ChannelBuffer copy(int index, int length) {
return new ReadOnlyChannelBuffer(buffer.copy(index, length));
return buffer.copy(index, length);
}
public ChannelBuffer slice(int index, int length) {
@ -177,6 +177,15 @@ public class ReadOnlyChannelBuffer extends AbstractChannelBuffer implements Wrap
return buffer.toByteBuffer(index, length).asReadOnlyBuffer();
}
@Override
public ByteBuffer[] toByteBuffers(int index, int length) {
ByteBuffer[] bufs = buffer.toByteBuffers(index, length);
for (int i = 0; i < bufs.length; i ++) {
bufs[i] = bufs[i].asReadOnlyBuffer();
}
return bufs;
}
public String toString(int index, int length, String charsetName) {
return buffer.toString(index, length, charsetName);
}

194
src/test/java/org/jboss/netty/buffer/ReadOnlyChannelBufferTest.java Normal file
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@ -0,0 +1,194 @@
/*
* JBoss, Home of Professional Open Source
*
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* by the @author tags. See the COPYRIGHT.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.netty.buffer;
import static org.easymock.EasyMock.*;
import static org.jboss.netty.buffer.ChannelBuffers.*;
import static org.junit.Assert.*;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.nio.channels.GatheringByteChannel;
import java.nio.channels.ScatteringByteChannel;
import org.junit.Test;
/**
* @author The Netty Project (netty-dev@lists.jboss.org)
* @author Trustin Lee (tlee@redhat.com)
*
* @version $Rev$, $Date$
*
*/
public class ReadOnlyChannelBufferTest {
@Test(expected = NullPointerException.class)
public void shouldNotAllowNullInConstructor() {
new ReadOnlyChannelBuffer(null);
}
@Test
public void testUnmodifiableBuffer() {
assertTrue(ChannelBuffers.unmodifiableBuffer(ChannelBuffers.buffer(1)) instanceof ReadOnlyChannelBuffer);
}
@Test
public void testUnwrap() {
ChannelBuffer buf = ChannelBuffers.buffer(1);
assertSame(buf, ((WrappedChannelBuffer) ChannelBuffers.unmodifiableBuffer(buf)).unwrap());
}
@Test
public void shouldHaveSameByteOrder() {
ChannelBuffer buf = ChannelBuffers.buffer(ChannelBuffers.LITTLE_ENDIAN, 1);
assertSame(ChannelBuffers.LITTLE_ENDIAN, ChannelBuffers.unmodifiableBuffer(buf).order());
}
@Test
public void shouldReturnReadOnlyDerivedBuffer() {
ChannelBuffer buf = ChannelBuffers.unmodifiableBuffer(ChannelBuffers.buffer(1));
assertTrue(buf.duplicate() instanceof ReadOnlyChannelBuffer);
assertTrue(buf.slice() instanceof ReadOnlyChannelBuffer);
assertTrue(buf.slice(0, 1) instanceof ReadOnlyChannelBuffer);
assertTrue(buf.duplicate() instanceof ReadOnlyChannelBuffer);
}
@Test
public void shouldReturnWritableCopy() {
ChannelBuffer buf = ChannelBuffers.unmodifiableBuffer(ChannelBuffers.buffer(1));
assertFalse(buf.copy() instanceof ReadOnlyChannelBuffer);
}
@Test
public void shouldForwardReadCallsBlindly() throws Exception {
ChannelBuffer buf = createStrictMock(ChannelBuffer.class);
expect(buf.readerIndex()).andReturn(0).anyTimes();
expect(buf.writerIndex()).andReturn(0).anyTimes();
expect(buf.capacity()).andReturn(0).anyTimes();
expect(buf.getBytes(1, (GatheringByteChannel) null, 2)).andReturn(3);
buf.getBytes(4, (OutputStream) null, 5);
buf.getBytes(6, (byte[]) null, 7, 8);
buf.getBytes(9, (ChannelBuffer) null, 10, 11);
buf.getBytes(12, (ByteBuffer) null);
expect(buf.getByte(13)).andReturn(Byte.valueOf((byte) 14));
expect(buf.getShort(15)).andReturn(Short.valueOf((short) 16));
expect(buf.getUnsignedMedium(17)).andReturn(18);
expect(buf.getInt(19)).andReturn(20);
expect(buf.getLong(21)).andReturn(22L);
ByteBuffer bb = ByteBuffer.allocate(100);
ByteBuffer[] bbs = new ByteBuffer[] { ByteBuffer.allocate(101), ByteBuffer.allocate(102) };
expect(buf.toByteBuffer(23, 24)).andReturn(bb);
expect(buf.toByteBuffers(25, 26)).andReturn(bbs);
expect(buf.toString(27, 28, "29")).andReturn("30");
expect(buf.capacity()).andReturn(31);
replay(buf);
ChannelBuffer roBuf = unmodifiableBuffer(buf);
assertEquals(3, roBuf.getBytes(1, (GatheringByteChannel) null, 2));
roBuf.getBytes(4, (OutputStream) null, 5);
roBuf.getBytes(6, (byte[]) null, 7, 8);
roBuf.getBytes(9, (ChannelBuffer) null, 10, 11);
roBuf.getBytes(12, (ByteBuffer) null);
assertEquals((byte) 14, roBuf.getByte(13));
assertEquals((short) 16, roBuf.getShort(15));
assertEquals(18, roBuf.getUnsignedMedium(17));
assertEquals(20, roBuf.getInt(19));
assertEquals(22L, roBuf.getLong(21));
ByteBuffer roBB = roBuf.toByteBuffer(23, 24);
assertEquals(100, roBB.capacity());
assertTrue(roBB.isReadOnly());
ByteBuffer[] roBBs = roBuf.toByteBuffers(25, 26);
assertEquals(2, roBBs.length);
assertEquals(101, roBBs[0].capacity());
assertTrue(roBBs[0].isReadOnly());
assertEquals(102, roBBs[1].capacity());
assertTrue(roBBs[1].isReadOnly());
assertEquals("30", roBuf.toString(27, 28, "29"));
assertEquals(31, roBuf.capacity());
verify(buf);
}
@Test(expected = UnsupportedOperationException.class)
public void shouldRejectDiscardReadBytes() {
unmodifiableBuffer(EMPTY_BUFFER).discardReadBytes();
}
@Test(expected = UnsupportedOperationException.class)
public void shouldRejectSetByte() {
unmodifiableBuffer(EMPTY_BUFFER).setByte(0, (byte) 0);
}
@Test(expected = UnsupportedOperationException.class)
public void shouldRejectSetShort() {
unmodifiableBuffer(EMPTY_BUFFER).setShort(0, (short) 0);
}
@Test(expected = UnsupportedOperationException.class)
public void shouldRejectSetMedium() {
unmodifiableBuffer(EMPTY_BUFFER).setMedium(0, 0);
}
@Test(expected = UnsupportedOperationException.class)
public void shouldRejectSetInt() {
unmodifiableBuffer(EMPTY_BUFFER).setInt(0, 0);
}
@Test(expected = UnsupportedOperationException.class)
public void shouldRejectSetLong() {
unmodifiableBuffer(EMPTY_BUFFER).setLong(0, 0);
}
@Test(expected = UnsupportedOperationException.class)
public void shouldRejectSetBytes1() throws IOException {
unmodifiableBuffer(EMPTY_BUFFER).setBytes(0, (InputStream) null, 0);
}
@Test(expected = UnsupportedOperationException.class)
public void shouldRejectSetBytes2() throws IOException {
unmodifiableBuffer(EMPTY_BUFFER).setBytes(0, (ScatteringByteChannel) null, 0);
}
@Test(expected = UnsupportedOperationException.class)
public void shouldRejectSetBytes3() {
unmodifiableBuffer(EMPTY_BUFFER).setBytes(0, (byte[]) null, 0, 0);
}
@Test(expected = UnsupportedOperationException.class)
public void shouldRejectSetBytes4() {
unmodifiableBuffer(EMPTY_BUFFER).setBytes(0, (ChannelBuffer) null, 0, 0);
}
@Test(expected = UnsupportedOperationException.class)
public void shouldRejectSetBytes5() {
unmodifiableBuffer(EMPTY_BUFFER).setBytes(0, (ByteBuffer) null);
}
}