public async Task ReadAckOrNakAsync_WhenDoesNotReceiveByte_ShouldReturnAbort()
{
var pipe = await new ByteArrayBuilder().BuildPipeAsync();
var sut = new PipeMessageReader(pipe.Reader);
var @int = await sut.ReadAckOrNakAsync();
@int.ShouldBe(AcknowledgmentResponseInterruption.Abort);
}
public async Task ReadAckOrNakAsync_WhenReceiveByte_ShouldReturnAccordingly(byte @byte, AcknowledgmentResponseInterruption expected)
{
var pipe = await new ByteArrayBuilder()
.Add(@byte)
.BuildPipeAsync();
var sut = new PipeMessageReader(pipe.Reader);
var @int = await sut.ReadAckOrNakAsync();
@int.ShouldBe(expected);
}
public async Task ReadMessageAsync_WhenReceiveWrongCRC_ShouldReturnInterruptionInvalidCrc()
{
var pipe = await new ByteArrayBuilder()
.Add(Bytes.SYN)
.Add("ABCDEFG")
.Add(Bytes.ETB)
.Add(0x11, 0x22)
.BuildPipeAsync();
var sut = new PipeMessageReader(pipe.Reader);
var msg = await sut.ReadMessageAsync();
var @int = msg.ShouldBeInterruption();
@int.ShouldBe(ResponseInterruption.InvalidCrc);
}
public async Task ReadMessageAsync_WhenReceiveMessage_WithLengthAtMost1024_ShouldReturnInterruptInvalidCrc(int length)
{
var pipe = await new ByteArrayBuilder()
.Add(Bytes.SYN)
.Add(new string('a', length))
.Add(Bytes.ETB)
.Add(0x11, 0x22)
.BuildPipeAsync();
var sut = new PipeMessageReader(pipe.Reader);
var msg = await sut.ReadMessageAsync();
var @int = msg.ShouldBeInterruption();
@int.ShouldBe(ResponseInterruption.InvalidCrc);
}
public async Task ReadMessageAsync_WhenReceiveWellFormattedMessage_ShouldReturnData(string payload, byte crcByte1, byte crcByte2)
{
var pipe = await new ByteArrayBuilder()
.Add(Bytes.SYN)
.Add(payload)
.Add(Bytes.ETB)
.Add(crcByte1, crcByte2)
.BuildPipeAsync();
var sut = new PipeMessageReader(pipe.Reader);
var msg = await sut.ReadMessageAsync();
var data = msg.ShouldBeData();
data.Length.ShouldBe(payload.Length);
data.ShouldBeInAscii(payload);
}
public async Task ReadMessageAsync_WhenReceiveMessage_WithByteOutOfRange_ShouldReturnInterruptInvalidMessage(byte byteOutOfRange)
{
var pipe = await new ByteArrayBuilder()
.Add(Bytes.SYN)
.Add("ABCD")
.Add(byteOutOfRange)
.Add("EFGH")
.Add(Bytes.ETB)
.Add(0x11, 0x22)
.BuildPipeAsync();
var sut = new PipeMessageReader(pipe.Reader);
var msg = await sut.ReadMessageAsync();
var @int = msg.ShouldBeInterruption();
@int.ShouldBe(ResponseInterruption.InvalidMessage);
}
public WhenReadingNextMessage()
{
messageReader = new PipeMessageReader(messageBuffer.Object);
}