@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 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
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 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 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 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());
}
