@Test
public void testCompact() throws Exception {
DynamicByteBuffer readBuffer = DynamicByteBuffer.allocate(512);
byte[] bytes = new byte[521];
DynamicByteBuffer data = DynamicByteBuffer.wrap(bytes);
readBuffer.putBuffer(data);
readBuffer.limit(data.position());
int numberOfBytesToBeCopiedDuringCompact = readBuffer.remaining();
readBuffer.compact(); // compact the read buffer
Assert.assertEquals(numberOfBytesToBeCopiedDuringCompact, readBuffer.position());
byte[] bytes1 = new byte[10];
DynamicByteBuffer data1 = DynamicByteBuffer.wrap(bytes1);
readBuffer.putBuffer(data1);
readBuffer.limit(data1.position());
numberOfBytesToBeCopiedDuringCompact = readBuffer.remaining();
readBuffer.compact(); // compact the read buffer
Assert.assertEquals(numberOfBytesToBeCopiedDuringCompact, readBuffer.position());
readBuffer.position(10);
numberOfBytesToBeCopiedDuringCompact = readBuffer.remaining();
readBuffer.compact();
Assert.assertEquals(numberOfBytesToBeCopiedDuringCompact, readBuffer.position());
}
@Test
public void testByteBufferAllocate() {
/* Invariant: 0 <= mark <= position <= limit <= capacity */
DynamicByteBuffer buf = DynamicByteBuffer.allocate(0);
// assertEquals(0, buf.mark());
assertEquals(0, buf.position());
assertEquals(0, buf.limit());
assertEquals(0, buf.capacity());
}
@Test
public void testGetAndSetBytes() throws Exception {
DynamicByteBuffer buf = DynamicByteBuffer.allocate(2);
buf.put((byte) 1);
buf.put((byte) 2);
buf.flip();
assertEquals((byte) 1, buf.get());
assertEquals((byte) 2, buf.get());
buf.flip();
assertEquals((byte) 1, buf.getAt(0));
assertEquals((byte) 2, buf.getAt(1));
buf.flip();
}
@Test
public void testGetAndSetSegment() throws Exception {
// tests reallocation of buffer automatically.
byte[] source = new byte[] {(byte) 1, (byte) 2, (byte) 3, (byte) 4, (byte) 5, (byte) 6};
DynamicByteBuffer buf = DynamicByteBuffer.allocate(2);
buf.put(source, 1, 4); // put 2,3,4,5 into buffer
buf.flip();
assertEquals(4, buf.remaining());
byte[] dest = new byte[3];
buf.get(dest, 1, 2); // get 3,4 into dest, start position at 1
assertEquals((byte) 0, dest[0]);
assertEquals((byte) 2, dest[1]);
assertEquals((byte) 3, dest[2]);
}
@Test
public void testGetAndSetShorts() throws Exception {
// tests reallocation of buffer automatically.
DynamicByteBuffer buf = DynamicByteBuffer.allocate(2);
buf.putShort((short) 1);
buf.putShort((short) 2);
buf.putShort((short) 3);
buf.putShort((short) 4);
buf.putShort((short) 5);
buf.flip();
assertEquals((short) 1, buf.getShort());
assertEquals((short) 1, buf.getShortAt(0));
assertEquals((short) 2, buf.getShortAt(2));
assertEquals((short) 3, buf.getShortAt(4));
assertEquals((short) 2, buf.getShort());
assertEquals((short) 3, buf.getShort());
assertEquals((short) 4, buf.getShort());
assertEquals((short) 5, buf.getShort());
}
@Test
public void testGetAndSetVarious() throws Exception {
// tests reallocation of buffer automatically.
DynamicByteBuffer buf = DynamicByteBuffer.allocate(2);
buf.put((byte) 1);
buf.putShort((short) 2);
buf.putInt(3);
buf.putLong(4);
String test = "this";
buf.putString(test, Charset.defaultCharset());
buf.put((byte) 0);
buf.putPrefixedString(1, "abcde", Charset.defaultCharset());
buf.flip();
assertEquals((byte) 1, buf.get());
assertEquals((short) 2, buf.getShort());
assertEquals(3, buf.getInt());
assertEquals(4, buf.getLong());
assertEquals(test, buf.getString(Charset.defaultCharset()));
assertEquals("abcde", buf.getPrefixedString(1, Charset.defaultCharset()));
}
@Test
public void testGetAndSetStringsInASCII() throws Exception {
// tests reallocation of buffer automatically.
DynamicByteBuffer buf = DynamicByteBuffer.allocate(2);
String test = "this";
String test1 = "is";
String test2 = "a";
String test3 = "story";
Charset cs = Charset.forName("ASCII");
buf.putString(test, cs);
buf.put((byte) 0);
buf.putPrefixedString(2, "abcde", cs);
buf.putPrefixedString(2, test1, cs);
buf.putPrefixedString(2, test2, cs);
buf.putPrefixedString(2, test3, cs);
buf.flip();
assertEquals(test, buf.getString(cs));
assertEquals("abcde", buf.getPrefixedString(2, cs));
assertEquals(test1, buf.getPrefixedString(2, cs));
assertEquals(test2, buf.getPrefixedString(2, cs));
assertEquals(test3, buf.getPrefixedString(2, cs));
}
@Test
public void testGetAndSetPrefixStringsInUTF16() throws Exception {
// tests reallocation of buffer automatically.
DynamicByteBuffer buf = DynamicByteBuffer.allocate(2);
Charset cs = Charset.forName("UTF-16");
String test = "this";
String test1 = "is";
String test2 = "a";
String test3 = "story";
buf.putPrefixedString(2, test, cs);
buf.putPrefixedString(2, test1, cs);
buf.putPrefixedString(2, test2, cs);
buf.putPrefixedString(2, test3, cs);
buf.put((byte) 0);
buf.putInt(100);
buf.flip();
assertEquals(test, buf.getPrefixedString(2, cs));
assertEquals(test1, buf.getPrefixedString(2, cs));
assertEquals(test2, buf.getPrefixedString(2, cs));
assertEquals(test3, buf.getPrefixedString(2, cs));
assertEquals((byte) 0, buf.get());
assertEquals(100, buf.getInt());
}
@Test(expected = BufferUnderflowException.class)
public void testGetAndSetGetLongException3() {
DynamicByteBuffer buf = DynamicByteBuffer.allocate(0);
buf.getLong();
}
@Test(expected = BufferOverflowException.class)
public void testGetAndSetPutLongException() {
DynamicByteBuffer buf = DynamicByteBuffer.allocate(0);
buf.setAutoExpand(false);
buf.putLong(121L);
}
@Test(expected = BufferUnderflowException.class)
public void testGetAndSetGetMediumIntException3() {
DynamicByteBuffer buf = DynamicByteBuffer.allocate(0);
buf.getUnsignedMediumInt();
}
@Test(expected = BufferOverflowException.class)
public void testGetAndSetPutUnsignedIntException() throws Exception {
DynamicByteBuffer buf = DynamicByteBuffer.allocate(0);
buf.setAutoExpand(false);
buf.putUnsignedInt(121);
}