/*
* Copyright 2012 The Netty Project
*
* The Netty Project 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.jboss.netty.buffer;
import org.easymock.EasyMock;
import org.jboss.netty.util.CharsetUtil;
import org.junit.Test;
import java.io.InputStream;
import java.nio.ByteBuffer;
import java.nio.channels.ScatteringByteChannel;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import static org.jboss.netty.buffer.ChannelBuffers.*;
import static org.junit.Assert.*;
/**
* Tests channel buffers
*/
public class ChannelBuffersTest {
@Test
public void testCompositeWrappedBuffer() {
ChannelBuffer header = dynamicBuffer(12);
ChannelBuffer payload = dynamicBuffer(512);
header.writeBytes(new byte[12]);
payload.writeBytes(new byte[512]);
ChannelBuffer buffer = wrappedBuffer(header, payload);
assertEquals(12, header.readableBytes());
assertEquals(512, payload.readableBytes());
assertEquals(12 + 512, buffer.readableBytes());
assertEquals(12 + 512, buffer.toByteBuffer(0, 12 + 512).remaining());
}
@Test
public void testHashCode() {
Map<byte[], Integer> map = new LinkedHashMap<byte[], Integer>();
map.put(new byte[0], 1);
map.put(new byte[] { 1 }, 32);
map.put(new byte[] { 2 }, 33);
map.put(new byte[] { 0, 1 }, 962);
map.put(new byte[] { 1, 2 }, 994);
map.put(new byte[] { 0, 1, 2, 3, 4, 5 }, 63504931);
map.put(new byte[] { 6, 7, 8, 9, 0, 1 }, (int) 97180294697L);
map.put(new byte[] { -1, -1, -1, (byte) 0xE1 }, 1);
for (Entry<byte[], Integer> e: map.entrySet()) {
assertEquals(
e.getValue().intValue(),
ChannelBuffers.hashCode(wrappedBuffer(e.getKey())));
}
}
@Test
public void testEquals() {
ChannelBuffer a, b;
// Different length.
a = wrappedBuffer(new byte[] { 1 });
b = wrappedBuffer(new byte[] { 1, 2 });
assertFalse(ChannelBuffers.equals(a, b));
// Same content, same firstIndex, short length.
a = wrappedBuffer(new byte[] { 1, 2, 3 });
b = wrappedBuffer(new byte[] { 1, 2, 3 });
assertTrue(ChannelBuffers.equals(a, b));
// Same content, different firstIndex, short length.
a = wrappedBuffer(new byte[] { 1, 2, 3 });
b = wrappedBuffer(new byte[] { 0, 1, 2, 3, 4 }, 1, 3);
assertTrue(ChannelBuffers.equals(a, b));
// Different content, same firstIndex, short length.
a = wrappedBuffer(new byte[] { 1, 2, 3 });
b = wrappedBuffer(new byte[] { 1, 2, 4 });
assertFalse(ChannelBuffers.equals(a, b));
// Different content, different firstIndex, short length.
a = wrappedBuffer(new byte[] { 1, 2, 3 });
b = wrappedBuffer(new byte[] { 0, 1, 2, 4, 5 }, 1, 3);
assertFalse(ChannelBuffers.equals(a, b));
// Same content, same firstIndex, long length.
a = wrappedBuffer(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 });
b = wrappedBuffer(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 });
assertTrue(ChannelBuffers.equals(a, b));
// Same content, different firstIndex, long length.
a = wrappedBuffer(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 });
b = wrappedBuffer(new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}, 1, 10);
assertTrue(ChannelBuffers.equals(a, b));
// Different content, same firstIndex, long length.
a = wrappedBuffer(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 });
b = wrappedBuffer(new byte[] { 1, 2, 3, 4, 6, 7, 8, 5, 9, 10 });
assertFalse(ChannelBuffers.equals(a, b));
// Different content, different firstIndex, long length.
a = wrappedBuffer(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 });
b = wrappedBuffer(new byte[] { 0, 1, 2, 3, 4, 6, 7, 8, 5, 9, 10, 11 }, 1, 10);
assertFalse(ChannelBuffers.equals(a, b));
}
@Test
public void testCompare() {
List<ChannelBuffer> expected = new ArrayList<ChannelBuffer>();
expected.add(wrappedBuffer(new byte[] { 1 }));
expected.add(wrappedBuffer(new byte[] { 1, 2 }));
expected.add(wrappedBuffer(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }));
expected.add(wrappedBuffer(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 }));
expected.add(wrappedBuffer(new byte[] { 2 }));
expected.add(wrappedBuffer(new byte[] { 2, 3 }));
expected.add(wrappedBuffer(new byte[] { 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }));
expected.add(wrappedBuffer(new byte[] { 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 }));
expected.add(wrappedBuffer(new byte[] { 2, 3, 4 }, 1, 1));
expected.add(wrappedBuffer(new byte[] { 1, 2, 3, 4 }, 2, 2));
expected.add(wrappedBuffer(new byte[] { 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 }, 1, 10));
expected.add(wrappedBuffer(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 }, 2, 12));
expected.add(wrappedBuffer(new byte[] { 2, 3, 4, 5 }, 2, 1));
expected.add(wrappedBuffer(new byte[] { 1, 2, 3, 4, 5 }, 3, 2));
expected.add(wrappedBuffer(new byte[] { 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 }, 2, 10));
expected.add(wrappedBuffer(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }, 3, 12));
for (int i = 0; i < expected.size(); i ++) {
for (int j = 0; j < expected.size(); j ++) {
if (i == j) {
assertEquals(0, compare(expected.get(i), expected.get(j)));
} else if (i < j) {
assertTrue(compare(expected.get(i), expected.get(j)) < 0);
} else {
assertTrue(compare(expected.get(i), expected.get(j)) > 0);
}
}
}
}
@Test
public void shouldReturnEmptyBufferWhenLengthIsZero() {
assertSame(EMPTY_BUFFER, buffer(0));
assertSame(EMPTY_BUFFER, buffer(LITTLE_ENDIAN, 0));
assertSame(EMPTY_BUFFER, directBuffer(0));
assertSame(EMPTY_BUFFER, wrappedBuffer(new byte[0]));
assertSame(EMPTY_BUFFER, wrappedBuffer(LITTLE_ENDIAN, new byte[0]));
assertSame(EMPTY_BUFFER, wrappedBuffer(new byte[8], 0, 0));
assertSame(EMPTY_BUFFER, wrappedBuffer(LITTLE_ENDIAN, new byte[8], 0, 0));
assertSame(EMPTY_BUFFER, wrappedBuffer(new byte[8], 8, 0));
assertSame(EMPTY_BUFFER, wrappedBuffer(LITTLE_ENDIAN, new byte[8], 8, 0));
assertSame(EMPTY_BUFFER, wrappedBuffer(ByteBuffer.allocateDirect(0)));
assertSame(EMPTY_BUFFER, wrappedBuffer(EMPTY_BUFFER));
assertSame(EMPTY_BUFFER, wrappedBuffer(new byte[0][]));
assertSame(EMPTY_BUFFER, wrappedBuffer(new byte[][] { new byte[0] }));
assertSame(EMPTY_BUFFER, wrappedBuffer(new ByteBuffer[0]));
assertSame(EMPTY_BUFFER, wrappedBuffer(new ByteBuffer[] { ByteBuffer.allocate(0) }));
assertSame(EMPTY_BUFFER, wrappedBuffer(ByteBuffer.allocate(0), ByteBuffer.allocate(0)));
assertSame(EMPTY_BUFFER, wrappedBuffer(new ChannelBuffer[0]));
assertSame(EMPTY_BUFFER, wrappedBuffer(new ChannelBuffer[] { buffer(0) }));
assertSame(EMPTY_BUFFER, wrappedBuffer(buffer(0), buffer(0)));
assertSame(EMPTY_BUFFER, copiedBuffer(new byte[0]));
assertSame(EMPTY_BUFFER, copiedBuffer(LITTLE_ENDIAN, new byte[0]));
assertSame(EMPTY_BUFFER, copiedBuffer(new byte[8], 0, 0));
assertSame(EMPTY_BUFFER, copiedBuffer(LITTLE_ENDIAN, new byte[8], 0, 0));
assertSame(EMPTY_BUFFER, copiedBuffer(new byte[8], 8, 0));
assertSame(EMPTY_BUFFER, copiedBuffer(LITTLE_ENDIAN, new byte[8], 8, 0));
assertSame(EMPTY_BUFFER, copiedBuffer(ByteBuffer.allocateDirect(0)));
assertSame(EMPTY_BUFFER, copiedBuffer(EMPTY_BUFFER));
assertSame(EMPTY_BUFFER, copiedBuffer(new byte[0][]));
assertSame(EMPTY_BUFFER, copiedBuffer(new byte[][] { new byte[0] }));
assertSame(EMPTY_BUFFER, copiedBuffer(new ByteBuffer[0]));
assertSame(EMPTY_BUFFER, copiedBuffer(new ByteBuffer[] { ByteBuffer.allocate(0) }));
assertSame(EMPTY_BUFFER, copiedBuffer(ByteBuffer.allocate(0), ByteBuffer.allocate(0)));
assertSame(EMPTY_BUFFER, copiedBuffer(new ChannelBuffer[0]));
assertSame(EMPTY_BUFFER, copiedBuffer(new ChannelBuffer[] { buffer(0) }));
assertSame(EMPTY_BUFFER, copiedBuffer(buffer(0), buffer(0)));
}
@Test
public void testCompare2() {
assertTrue(compare(
wrappedBuffer(new byte[]{(byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF}),
wrappedBuffer(new byte[]{(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00}))
> 0);
assertTrue(compare(
wrappedBuffer(new byte[]{(byte) 0xFF}),
wrappedBuffer(new byte[]{(byte) 0x00}))
> 0);
}
@Test(expected = NullPointerException.class)
public void shouldDisallowNullEndian1() {
buffer(null, 0);
}
@Test(expected = NullPointerException.class)
public void shouldDisallowNullEndian2() {
directBuffer(null, 0);
}
@Test(expected = NullPointerException.class)
public void shouldDisallowNullEndian3() {
wrappedBuffer(null, new byte[0]);
}
@Test(expected = NullPointerException.class)
public void shouldDisallowNullEndian4() {
wrappedBuffer(null, new byte[0], 0, 0);
}
@Test
public void shouldAllowEmptyBufferToCreateCompositeBuffer() {
ChannelBuffer buf = wrappedBuffer(
EMPTY_BUFFER,
wrappedBuffer(LITTLE_ENDIAN, new byte[16]),
EMPTY_BUFFER);
assertEquals(16, buf.capacity());
}
@Test
public void testWrappedBuffer() {
assertEquals(16, wrappedBuffer(ByteBuffer.allocateDirect(16)).capacity());
assertEquals(
wrappedBuffer(new byte[] { 1, 2, 3 }),
wrappedBuffer(new byte[][] { new byte[] { 1, 2, 3 } }));
assertEquals(
wrappedBuffer(new byte[] { 1, 2, 3 }),
wrappedBuffer(
new byte[] { 1 },
new byte[] { 2 },
new byte[] { 3 }));
assertEquals(
wrappedBuffer(new byte[] { 1, 2, 3 }),
wrappedBuffer(new ChannelBuffer[] {
wrappedBuffer(new byte[] { 1, 2, 3 })
}));
assertEquals(
wrappedBuffer(new byte[] { 1, 2, 3 }),
wrappedBuffer(
wrappedBuffer(new byte[] { 1 }),
wrappedBuffer(new byte[] { 2 }),
wrappedBuffer(new byte[] { 3 })));
assertEquals(
wrappedBuffer(new byte[] { 1, 2, 3 }),
wrappedBuffer(new ByteBuffer[] {
ByteBuffer.wrap(new byte[] { 1, 2, 3 })
}));
assertEquals(
wrappedBuffer(new byte[] { 1, 2, 3 }),
wrappedBuffer(
ByteBuffer.wrap(new byte[] { 1 }),
ByteBuffer.wrap(new byte[] { 2 }),
ByteBuffer.wrap(new byte[] { 3 })));
}
@Test
public void testCopiedBuffer() {
assertEquals(16, copiedBuffer(ByteBuffer.allocateDirect(16)).capacity());
assertEquals(
wrappedBuffer(new byte[] { 1, 2, 3 }),
copiedBuffer(new byte[][] { new byte[] { 1, 2, 3 } }));
assertEquals(
wrappedBuffer(new byte[] { 1, 2, 3 }),
copiedBuffer(
new byte[] { 1 },
new byte[] { 2 },
new byte[] { 3 }));
assertEquals(
wrappedBuffer(new byte[] { 1, 2, 3 }),
copiedBuffer(new ChannelBuffer[] {
wrappedBuffer(new byte[] { 1, 2, 3 })
}));
assertEquals(
wrappedBuffer(new byte[] { 1, 2, 3 }),
copiedBuffer(
wrappedBuffer(new byte[] { 1 }),
wrappedBuffer(new byte[] { 2 }),
wrappedBuffer(new byte[] { 3 })));
assertEquals(
wrappedBuffer(new byte[] { 1, 2, 3 }),
copiedBuffer(new ByteBuffer[] {
ByteBuffer.wrap(new byte[] { 1, 2, 3 })
}));
assertEquals(
wrappedBuffer(new byte[] { 1, 2, 3 }),
copiedBuffer(
ByteBuffer.wrap(new byte[] { 1 }),
ByteBuffer.wrap(new byte[] { 2 }),
ByteBuffer.wrap(new byte[] { 3 })));
}
@Test
public void testHexDump() {
assertEquals("", hexDump(EMPTY_BUFFER));
assertEquals("123456", hexDump(wrappedBuffer(
new byte[] {
0x12, 0x34, 0x56
})));
assertEquals("1234567890abcdef", hexDump(wrappedBuffer(
new byte[] {
0x12, 0x34, 0x56, 0x78,
(byte) 0x90, (byte) 0xAB, (byte) 0xCD, (byte) 0xEF
})));
}
@Test
public void testSwapMedium() {
assertEquals(0x563412, swapMedium(0x123456));
assertEquals(0x80, swapMedium(0x800000));
}
@Test
public void testUnmodifiableBuffer() throws Exception {
ChannelBuffer buf = unmodifiableBuffer(buffer(16));
try {
buf.discardReadBytes();
fail();
} catch (UnsupportedOperationException e) {
// Expected
}
try {
buf.setByte(0, (byte) 0);
fail();
} catch (UnsupportedOperationException e) {
// Expected
}
try {
buf.setBytes(0, EMPTY_BUFFER, 0, 0);
fail();
} catch (UnsupportedOperationException e) {
// Expected
}
try {
buf.setBytes(0, new byte[0], 0, 0);
fail();
} catch (UnsupportedOperationException e) {
// Expected
}
try {
buf.setBytes(0, ByteBuffer.allocate(0));
fail();
} catch (UnsupportedOperationException e) {
// Expected
}
try {
buf.setShort(0, (short) 0);
fail();
} catch (UnsupportedOperationException e) {
// Expected
}
try {
buf.setMedium(0, 0);
fail();
} catch (UnsupportedOperationException e) {
// Expected
}
try {
buf.setInt(0, 0);
fail();
} catch (UnsupportedOperationException e) {
// Expected
}
try {
buf.setLong(0, 0);
fail();
} catch (UnsupportedOperationException e) {
// Expected
}
try {
buf.setBytes(0, EasyMock.createMock(InputStream.class), 0);
fail();
} catch (UnsupportedOperationException e) {
// Expected
}
try {
buf.setBytes(0, EasyMock.createMock(ScatteringByteChannel.class), 0);
fail();
} catch (UnsupportedOperationException e) {
// Expected
}
}
/**
* Test for https://github.com/netty/netty/issues/449
*/
@Test
public void testHexDumpOperations() {
ChannelBuffer buffer = copiedBuffer("This is some testdata", CharsetUtil.ISO_8859_1);
String hexDump = hexDump(buffer);
ChannelBuffer buffer2 = hexDump(hexDump);
assertEquals(buffer, buffer2);
String hexDump2 = hexDump(buffer2);
assertEquals(hexDump, hexDump2);
}
}