public void TestEncodeSigned()
{
byte[] buf = new byte[2];
BFlat.Buffer output = new BFlat.Buffer(buf, 0);
Assert.AreEqual(1, Leb128.encodeSigned(output, 1));
Assert.AreEqual(0x1, buf[0]);
Assert.AreEqual(1, Leb128.encodeSigned(output.rewind(), 0));
Assert.AreEqual(0x0, buf[0]);
Assert.AreEqual(1, Leb128.encodeSigned(output.rewind(), -1));
Assert.AreEqual(0x7f, buf[0]);
Assert.AreEqual(2, Leb128.encodeSigned(output.rewind(), 127));
Assert.AreEqual((byte)0xff, buf[0]);
Assert.AreEqual(0x00, buf[1]);
Assert.AreEqual(2, Leb128.encodeSigned(output.rewind(), -128));
Assert.AreEqual((byte)0x80, buf[0]);
Assert.AreEqual(0x7f, buf[1]);
buf = new byte[3];
output.data = buf;
Assert.AreEqual(3, Leb128.encodeSigned(output.rewind(), -32767));
Assert.AreEqual((byte)0x81, buf[0]);
Assert.AreEqual((byte)0x80, buf[1]);
Assert.AreEqual((byte)0x7e, buf[2]);
buf = new byte[4];
output.data = buf;
output.position = 1;
Assert.AreEqual(3, Leb128.encodeSigned(output, 32768));
Assert.AreEqual((byte)0x80, buf[1]);
Assert.AreEqual((byte)0x80, buf[2]);
Assert.AreEqual((byte)0x02, buf[3]);
}
public void TestDecodeSigned()
{
BFlat.Buffer buffer = new BFlat.Buffer(new byte[10], 0);
long data = 0;
Leb128.encodeSigned(buffer, data);
Assert.AreEqual(1, buffer.position);
Assert.AreEqual(data, Leb128.decodeSigned(buffer));
data = 1;
Leb128.encodeSigned(buffer.rewind(), data);
Assert.AreEqual(1, buffer.position);
Assert.AreEqual(data, Leb128.decodeSigned(buffer.rewind()));
data = -1;
Leb128.encodeSigned(buffer.rewind(), data);
Assert.AreEqual(1, buffer.position);
Assert.AreEqual(data, Leb128.decodeSigned(buffer.rewind()));
data = 127;
Leb128.encodeSigned(buffer.rewind(), data);
Assert.AreEqual(2, buffer.position);
Assert.AreEqual(data, Leb128.decodeSigned(buffer.rewind()));
data = -128;
Leb128.encodeSigned(buffer.rewind(), data);
Assert.AreEqual(2, buffer.position);
Assert.AreEqual(data, Leb128.decodeSigned(buffer.rewind()));
data = 32767;
Leb128.encodeSigned(buffer.rewind(), data);
Assert.AreEqual(3, buffer.position);
Assert.AreEqual(data, Leb128.decodeSigned(buffer.rewind()));
data = -32768;
Leb128.encodeSigned(buffer.rewind(), data);
Assert.AreEqual(3, buffer.position);
Assert.AreEqual(data, Leb128.decodeSigned(buffer.rewind()));
}
public void encodeUnsignedTest()
{
BFlat.Buffer buf = new BFlat.Buffer(new byte[10], 0);
Assert.AreEqual(1, Leb128.encodeUnsigned(buf, 0));
Assert.AreEqual(0, buf.data[0]);
Assert.AreEqual(1, Leb128.encodeUnsigned(buf, 1));
Assert.AreEqual(1, buf.data[1]);
Assert.AreEqual(1, Leb128.encodeUnsigned(buf.rewind(), 127));
Assert.AreEqual((byte)0x7f, buf.data[0]);
Assert.AreEqual(2, Leb128.encodeUnsigned(buf.rewind(), 128));
Assert.AreEqual((byte)0x80, buf.data[0]);
Assert.AreEqual((byte)0x01, buf.data[1]);
Leb128.encodeUnsigned(buf.rewind(), UInt64.MaxValue);
Assert.AreEqual(UInt64.MaxValue, Leb128.decodeUnsigned(buf.rewind()));
}