@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 testHexDump() {
// TODO: should test actual HEX values, 1 and 2 digits
DynamicByteBuffer buf = new DynamicByteBuffer();
buf.put((byte) 1);
buf.put((byte) 2);
buf.put((byte) 3);
buf.flip();
assertEquals("1 2 3 ", buf.getHexDump());
}
/*
* Unsigned Medium Int tests
*/
@Test
public void testGetAndSetMediumInt() throws Exception {
DynamicByteBuffer buf = new DynamicByteBuffer();
buf.putUnsigned(0x12);
buf.putUnsigned(0x34);
buf.putUnsigned(0x56);
buf.flip();
assertEquals(0x123456, buf.getUnsignedMediumInt());
}
/*
* Int tests
*/
@Test
public void testGetAndSetInt() throws Exception {
// cant test for numbers outside range as putint accepts int and
// hence java doesnt allow values outside range -2147483648 to 2147483647 to be set to
// valriables
// hence no test case for assertFalse for numbers outside -2147483648 to 2147483647
DynamicByteBuffer buf = new DynamicByteBuffer();
int b1 = -2147483648;
int b2 = 2147483647;
int b3 = 32768;
int b4 = 128;
int b5 = 128;
buf.putInt(b1);
buf.putInt(b2);
buf.putInt(b3);
buf.flip();
assertEquals(b1, buf.getInt());
assertEquals(b2, buf.getInt());
buf.rewind();
buf.putIntAt(0, b4);
buf.putIntAt(4, b5);
assertEquals(b4, buf.getIntAt(0));
assertEquals(b5, buf.getIntAt(4));
}
/*
* byte array tests
*/
@Test
public void testGetAndSetByteArray() throws Exception {
// TODO: test should include NULL, MIN and MAX bytes
DynamicByteBuffer buf = new DynamicByteBuffer();
byte[] b1 = new byte[6];
b1[0] = (byte) 1;
b1[1] = (byte) -1;
b1[2] = (byte) -1;
b1[3] = (byte) 4;
b1[4] = (byte) 1;
b1[5] = (byte) -2;
buf.putBytes(b1);
buf.flip();
byte[] res = buf.getBytes(2);
byte[] res1 = buf.getBytesAt(4, 2);
assertEquals((byte) 1, res[0]);
assertEquals((byte) -1, res[1]);
assertEquals((byte) 1, res1[0]);
assertEquals((byte) -2, res1[1]);
byte[] b2 = new byte[2];
b2[0] = (byte) 121;
b2[1] = (byte) 122;
buf.putBytesAt(0, b2);
buf.flip();
res1 = buf.getBytesAt(0, 2);
assertEquals((byte) 121, res1[0]);
assertEquals((byte) 122, res1[1]);
}
@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]);
}
@SuppressWarnings("deprecation")
@Test
public void testGetAndSetMediumInt2() throws Exception {
DynamicByteBuffer buf = new DynamicByteBuffer();
buf.order(java.nio.ByteOrder.LITTLE_ENDIAN);
buf.putUnsigned(0x12);
buf.putUnsigned(0x34);
buf.putUnsigned(0x56);
buf.flip();
assertEquals(0x563412, buf.getUnsignedMediumInt());
}
// Long tests
@Test
public void testGetAndSetLong() throws Exception {
DynamicByteBuffer buf = new DynamicByteBuffer();
long b1 = -9223372036854775808L;
long b2 = 9223372036854775807L;
long b3 = 32768;
long b4 = 543210987654321L;
long b5 = 123456789012345L;
buf.putLong(b1);
buf.putLong(b2);
buf.putLong(b3);
buf.flip();
assertEquals(b1, buf.getLong());
assertEquals(b2, buf.getLong());
buf.rewind();
buf.putLongAt(0, b4);
buf.putLongAt(8, b5);
assertEquals(b4, buf.getLongAt(0));
assertEquals(b5, buf.getLongAt(8));
}
@Test
public void testGetAndSetPut() throws Exception {
DynamicByteBuffer buf = new DynamicByteBuffer();
byte b1 = (byte) -128;
byte b2 = (byte) 127;
byte b3 = (byte) 128;
byte b4 = (byte) 12;
byte b5 = (byte) 13;
buf.put(b1);
buf.put(b2);
buf.put(b3);
buf.flip();
assertEquals(b1, buf.get());
assertEquals(b2, buf.get());
assertEquals(b3, buf.get());
buf.putAt(0, b4);
buf.putAt(1, b5);
assertEquals(b4, buf.getAt(0));
assertEquals(b5, buf.getAt(1));
}
@Test(expected = BufferUnderflowException.class)
public void testGetAndSetGetLongException3() {
DynamicByteBuffer buf = DynamicByteBuffer.allocate(0);
buf.getLong();
}
@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(expected = IndexOutOfBoundsException.class)
public void testGetAndSetPutLongAtException2() {
DynamicByteBuffer buf = new DynamicByteBuffer();
buf.putLongAt(129, 121L);
}
@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
public void testBuffers() throws Exception {
// tests reallocation of buffer automatically.
String test1 = "Test1";
String test2 = "Test2";
DynamicByteBuffer buf1 = DynamicByteBuffer.wrap(test1.getBytes());
DynamicByteBuffer buf2 = DynamicByteBuffer.wrap(test2.getBytes());
buf1.get();
buf1.get();
int p = buf1.position();
buf1.skip(buf1.remaining());
buf1.putBuffer(buf2);
buf1.flip();
buf1.position(p);
buf1 = buf1.slice();
// TODO: should test actual contents of these buffers
assertEquals(8, buf1.remaining());
}
@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 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(expected = IndexOutOfBoundsException.class)
public void testGetAndSetGetLongAtException4() {
DynamicByteBuffer buf = new DynamicByteBuffer();
buf.getLongAt(128);
}
@Test
public void testGetAndSetUnsignedShort() throws Exception {
DynamicByteBuffer buf = new DynamicByteBuffer();
buf.putUnsignedShort(0);
buf.putUnsignedShort(65535);
buf.putUnsignedShort(65536);
buf.putUnsignedShort(-1);
buf.flip();
assertEquals(0, buf.getUnsignedShort());
assertEquals(65535, buf.getUnsignedShort());
assertEquals(0, buf.getUnsignedShort());
assertEquals(65535, buf.getUnsignedShort());
buf.rewind();
buf.putUnsignedShortAt(0, 121);
buf.putUnsignedShortAt(2, 122);
assertEquals(121, buf.getUnsignedShortAt(0));
assertEquals(122, buf.getUnsignedShortAt(2));
}
@Test
public void testGetAndSetUnsigned() throws Exception {
DynamicByteBuffer buf = new DynamicByteBuffer();
buf.putUnsigned(0);
buf.putUnsigned(255);
buf.putUnsigned(256);
buf.putUnsigned(-1);
buf.flip();
assertEquals(buf.position(), 0);
assertEquals(buf.limit(), 4);
assertEquals(0, buf.getUnsigned());
assertEquals(255, buf.getUnsigned());
assertEquals(0, buf.getUnsigned());
assertEquals(255, buf.getUnsigned());
assertEquals(buf.position(), 4);
buf.putUnsignedAt(0, 121);
buf.putUnsignedAt(1, 122);
assertEquals(121, buf.getUnsignedAt(0));
assertEquals(122, buf.getUnsignedAt(1));
assertEquals(buf.position(), 4);
}
/*
* Short Tests
*/
@Test
public void testGetAndSetShort() throws Exception {
DynamicByteBuffer buf = new DynamicByteBuffer();
buf.putShort((short) 0);
buf.putShort((short) 1);
buf.putShort((short) 32767);
buf.putShort((short) -32768);
buf.flip();
assertEquals(buf.position(), 0);
assertEquals(buf.limit(), 8);
assertEquals((short) 0, buf.getShort());
assertEquals((short) 1, buf.getShort());
assertEquals((short) 32767, buf.getShort());
assertEquals((short) -32768, buf.getShort());
assertEquals(buf.position(), 8);
buf.putShortAt(0, (short) 121);
buf.putShortAt(2, (short) 1000);
assertEquals((short) 121, buf.getShortAt(0));
assertEquals((short) 1000, buf.getShortAt(2));
assertEquals(buf.position(), 8);
}
@Test
public void testGetAndSetUnsignedInt() throws Exception {
DynamicByteBuffer buf = new DynamicByteBuffer();
long MAX_UNSIGNED_INT = 4294967295L;
buf.putUnsignedInt(MAX_UNSIGNED_INT);
buf.putUnsignedInt(1);
buf.putUnsignedInt(0);
buf.putUnsignedInt(-1);
buf.putUnsignedInt(MAX_UNSIGNED_INT + 1);
assertEquals(buf.position(), 20);
buf.flip();
assertEquals(buf.position(), 0);
assertEquals(buf.limit(), 20);
assertEquals("test 1", MAX_UNSIGNED_INT, buf.getUnsignedInt());
assertEquals("test 2", 1L, buf.getUnsignedInt());
assertEquals("test 3", 0L, buf.getUnsignedInt());
assertEquals("test 4", MAX_UNSIGNED_INT, buf.getUnsignedInt());
assertEquals("test 5", 0L, buf.getUnsignedInt());
assertEquals(buf.position(), 20);
buf.putUnsignedIntAt(0, 121);
buf.putUnsignedIntAt(4, 4000000000L);
assertEquals(121L, buf.getUnsignedIntAt(0));
assertEquals(4000000000L, buf.getUnsignedIntAt(4));
assertEquals(buf.position(), 20);
}
@Test(expected = BufferOverflowException.class)
public void testGetAndSetPutUnsignedIntException() throws Exception {
DynamicByteBuffer buf = DynamicByteBuffer.allocate(0);
buf.setAutoExpand(false);
buf.putUnsignedInt(121);
}
@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 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());
}