public static Color Randomize(this Color color)
{
var random = new Random();
color = new Color(random.Byte(), random.Byte(), random.Byte());
return(color);
}
public void DeserializationFailsWithInsufficientData()
{
var value = new ProtocolHeader(Random.Chars(count: 4), Random.Byte(), new ProtocolVersion(Random.Byte(), Random.Byte(), Random.Byte()));
var result = ProtocolHeader.Deserialize(new Byte[0], out var _, out var _);
Assert.False(result);
}
/// <summary>An endless stream of random bytes</summary>
public static IEnumerable <byte> Bytes(this Random r)
{
for (;;)
{
yield return(r.Byte());
}
}
public void SerializedSizeIsEightBytes()
{
var value = new ProtocolHeader(Random.Chars(count: 4), Random.Byte(), new ProtocolVersion(Random.Byte(), Random.Byte(), Random.Byte()));
var buffer = new ArrayBufferWriter <Byte>(8);
value.Serialize(buffer);
Assert.Equal(expected: 8, actual: buffer.WrittenCount);
}
public void SerializedSizeIsThreeBytes()
{
var value = new ProtocolVersion(Random.Byte(), Random.Byte(), Random.Byte());
var buffer = new ArrayBufferWriter <Byte>(3);
value.Serialize(buffer);
Assert.Equal(expected: 3, actual: buffer.WrittenCount);
}
public void SerializationIsSymmetric()
{
var buffer = new ArrayBufferWriter <Byte>(8);
var value = new ProtocolHeader(Random.Chars(count: 4), Random.Byte(), new ProtocolVersion(Random.Byte(), Random.Byte(), Random.Byte()));
value.Serialize(buffer);
ProtocolHeader.Deserialize(buffer.WrittenMemory.Span, out var deserialized, out var _);
Assert.Equal(expected: value, actual: deserialized);
}
/// <summary>
/// Thread-safe wrapper for Byte().
/// </summary>
public sealed override byte Byte()
{
byte b;
lock (this)
{
b = _rand.Byte();
}
return(b);
}
public void DeserializationFailsWithInvalidFrameType()
{
var buffer = new ArrayBufferWriter <Byte>(8);
var value = new RawFrame(Random.Enum <FrameType>(), Random.UShort(), Random.Bytes(Random.UShort()));
value.Serialize(buffer);
var modifiedBuffer = buffer.WrittenMemory.ToArray();
modifiedBuffer[0] = Random.Byte(min: 10);
Assert.Throws <ProtocolErrorException>(() => RawFrame.Deserialize(modifiedBuffer.AsSpan(), out var _, out var _));
}
public void DeserializationReturnsSurplusData()
{
var value = new ProtocolHeader(Random.Chars(count: 4), Random.Byte(), new ProtocolVersion(Random.Byte(), Random.Byte(), Random.Byte()));
var extra = Random.UInt();
var buffer = new ArrayBufferWriter <Byte>(12);
buffer.WriteSerializable(value)
.WriteUInt32LE(extra);
ProtocolHeader.Deserialize(buffer.WrittenMemory.Span, out var _, out var surplus);
Assert.Equal(expected: sizeof(UInt32), actual: surplus.Length);
Assert.Equal(expected: extra, actual: BitConverter.ToUInt32(surplus));
}
ConnectionStart RandomSubject => new ConnectionStart(
version: (Random.Byte(), Random.Byte()),
/// <summary>
/// Draw a random and uniform byte.
/// </summary>
public sealed override byte Byte()
{
Switch();
return(Rand.Byte());
}
public byte Generate() => _rnd.Byte();