public void SizeUpdatesShouldBeEncodedWithinNextHeaderBlock(
int newSize)
{
var encoder = new Encoder(new Encoder.Options {
HuffmanStrategy = HuffmanStrategy.Never,
});
encoder.DynamicTableSize = newSize;
var expectedTableUpdateBytes = IntEncoder.Encode(newSize, 0x20, 5);
var fields = new HeaderField[] {
new HeaderField {
Name = "ab", Value = "cd", Sensitive = true
}
};
var result = new Buffer();
result.WriteBytes(expectedTableUpdateBytes);
result.AddHexString("1002");
result.WriteString("ab");
result.AddHexString("02");
result.WriteString("cd");
var res = EncodeToTempBuf(encoder, fields, MaxFrameSize);
Assert.Equal(result.Bytes, res.Bytes);
Assert.Equal(1, res.FieldCount);
Assert.Equal(0, encoder.DynamicTableUsedSize);
Assert.Equal(0, encoder.DynamicTableLength);
Assert.Equal(newSize, encoder.DynamicTableSize);
}
public void ShouldEncodeValuesIntoPrefixPlusExtraBytes()
{
int val = 30; // Fits not into 4bit prefix
var buf = IntEncoder.Encode(val, 0xA0, 4);
Assert.Equal(buf.Length, 2);
Assert.Equal(buf[0], 0xA0 | 0x0F);
Assert.Equal(buf[1], 15); // 30 - 15 = 15
val = 1; // Fits not into 1bit prefix
buf = IntEncoder.Encode(val, 0xFE, 1);
Assert.Equal(buf.Length, 2);
Assert.Equal(buf[0], 0xFE | 0x01);
Assert.Equal(buf[1], 0);
val = 127; // Fits not into 1bit prefix
buf = IntEncoder.Encode(val, 0x80, 7);
Assert.Equal(buf.Length, 2);
Assert.Equal(buf[0], 0x80 | 0xFF);
Assert.Equal(buf[1], 0);
val = 128; // Fits not into 1bit prefix
buf = IntEncoder.Encode(val, 0x00, 7);
Assert.Equal(buf.Length, 2);
Assert.Equal(buf[0], 0x00 | 0x7F);
Assert.Equal(buf[1], 1);
val = 255; // Fits not into 8 bit prefix
buf = IntEncoder.Encode(val, 0x00, 8);
Assert.Equal(buf.Length, 2);
Assert.Equal(buf[0], 0xFF);
Assert.Equal(buf[1], 0);
val = 256; // Fits not into 8 bit prefix
buf = IntEncoder.Encode(val, 0x00, 8);
Assert.Equal(buf.Length, 2);
Assert.Equal(buf[0], 0xFF);
Assert.Equal(buf[1], 1);
val = 1337; // 3byte example from the spec
buf = IntEncoder.Encode(val, 0xC0, 5);
Assert.Equal(buf.Length, 3);
Assert.Equal(buf[0], 0xC0 | 0x1F);
Assert.Equal(buf[1], 0x9A);
Assert.Equal(buf[2], 0x0A);
// 4 byte example
val = 27 * 128 * 128 + 31 * 128 + 1;
buf = IntEncoder.Encode(val, 0, 1);
Assert.Equal(buf.Length, 4);
Assert.Equal(buf[0], 1);
Assert.Equal(buf[1], 0x80);
Assert.Equal(buf[2], 0x9F);
Assert.Equal(buf[3], 27);
}
public void ShouldEncodeTheMaximumAllowedValue()
{
int val = Int32.MaxValue; // Fits not into 4bit prefix
var buf = IntEncoder.Encode(val, 0xA0, 2);
Assert.Equal(buf.Length, 6);
Assert.Equal(buf[0], 0xA3); // Remaining: 2147483644
Assert.Equal(buf[1], 252); // Remaining: 16777215
Assert.Equal(buf[2], 255); // Remaining: 131071
Assert.Equal(buf[3], 255); // Remaining: 1023
Assert.Equal(buf[4], 255); // Remaining: 7
Assert.Equal(buf[5], 7);
// TODO: Probably test this with other prefixes
}
public void ShouldEncodeValuesWhichFitIntoThePrefix()
{
int val = 30; // Fits into 5bit prefix
var buf = IntEncoder.Encode(val, 0x80, 5);
Assert.Equal(buf.Length, 1);
Assert.Equal(buf[0], 0x80 | 0x1E);
val = 1; // Fits into 2 bit prefix
buf = IntEncoder.Encode(val, 0xFC, 2);
Assert.Equal(buf.Length, 1);
Assert.Equal(buf[0], 0xFC | 0x01);
val = 128; // Fits into 8 bit prefix
buf = IntEncoder.Encode(val, 0x00, 8);
Assert.Equal(buf.Length, 1);
Assert.Equal(buf[0], 0x80);
val = 254; // Fits into 8 bit prefix
buf = IntEncoder.Encode(val, 0x00, 8);
Assert.Equal(buf.Length, 1);
Assert.Equal(buf[0], 254);
}
public byte[] GetEncodedValue()
{
return(IntEncoder.Encode(Value));
}