void TestModeForSendOperation(XModemProtocol.XModemMode mode)
{
var communicator = new ComSendCollection();
var context = new Context {
Mode = mode,
Data = _rdg.GetRandomData(40000).ToList(),
Communicator = communicator,
};
var dts = new List <List <byte> > {
new List <byte> {
mode == XModemProtocol.XModemMode.Checksum ? context.Options.NAK : context.Options.C
}
};
double payloadCount = mode == XModemProtocol.XModemMode.OneK ? 1024.0 : 128.0;
int ackCount = (int)Math.Ceiling(context.Data.Count / payloadCount) + 1;
dts.AddRange(Enumerable.Repeat(new List <byte> {
context.Options.ACK
}, ackCount));
communicator.CollectionToSend = dts;
IOperation operation = new SendOperation();
operation.Go(context);
var expectedData = new List <List <byte> >(context.Packets);
expectedData.Add(new List <byte> {
context.Options.EOT
});
Assert.AreEqual(expectedData, communicator.BytesRead);
}
void TestModeForReceiveOperation(XModemProtocol.XModemMode mode)
{
var randomData = _rdg.GetRandomData(40000).ToList();
var communicator = new ComSendCollection();
var context = new Context {
Mode = mode,
Data = randomData,
Communicator = communicator,
};
var cts = new List <List <byte> >(context.Packets);
cts.Add(new List <byte> {
context.Options.EOT
});
var expectedData = new List <List <byte> > {
new List <byte> {
context.Mode == XModemProtocol.XModemMode.Checksum ? context.Options.NAK : context.Options.C
},
};
expectedData.AddRange(Enumerable.Repeat(new List <byte> {
context.Options.ACK
}, cts.Count).ToList());
IOperation operation = new ReceiveOperation();
context.Data = new List <byte>();
communicator.CollectionToSend = cts;
operation.Go(context);
Assert.AreEqual(expectedData, communicator.BytesRead);
}
private void TestModeForInvokeSend(IEnumerable <byte> _data, XModemProtocol.XModemMode mode)
{
IInvoker invoker = new InvokeSend();
var cts = new CancellationTokenSource();
var communicator = new ComSendCollection();
IContext context = new Context {
Token = cts.Token,
Communicator = communicator,
Mode = mode,
};
var expectedData = new List <List <byte> >(context.Packets);
expectedData.Add(new List <byte> {
context.Options.EOT
});
communicator.BytesToSend = new List <byte> {
context.Options.ACK
};
communicator.BytesRead = new List <List <byte> >();
invoker.Invoke(context);
Assert.AreEqual(expectedData, communicator.BytesRead);
}
private void RunTestForInvokeReceive(IEnumerable <byte> data, XModemMode mode)
{
var communicator = new ComSendCollection();
IInvoker invoker = new InvokeReceive();
IFinalizer finalizer = new FinalizeReceive();
IContext context = new Context {
Mode = mode,
Communicator = communicator,
};
var packets = context.Tools.Builder.GetPackets(data, context.Options);
packets.Add(new List <byte> {
context.Options.EOT
});
communicator.CollectionToSend = packets;
invoker.Invoke(context);
finalizer.Finalize(context);
Assert.AreEqual(data, context.Data);
Assert.AreEqual(packets.GetRange(0, packets.Count - 1), context.Packets);
}
public void InitializeReceiveTest()
{
IContext context = new Context();
var communicator = new ComSendCollection();
var cts = new CancellationTokenSource();
IInitializer ini = new InitializeReceive();
var options = new XModemProtocolOptions();
bool excThrown = false;
// Attach communicator.
context.Communicator = communicator;
// Drop options to minimums allowed.
options.ReceiverInitializationTimeout = 0;
options.ReceiverMaxNumberOfInitializationBytesForCRC = 0;
options.ReceiverMaxNumberOfInitializationBytesInTotal = 0;
context.Options = options;
// Modes to test in succeeding loop.
var modes = new XModemProtocol.XModemMode[] {
XModemProtocol.XModemMode.OneK,
XModemProtocol.XModemMode.CRC,
XModemProtocol.XModemMode.Checksum,
};
foreach (var mode in modes)
{
// Update mode.
context.Mode = mode;
// Construct expected data from operation.
var expectedData = new List <List <byte> >();
switch (mode)
{
case XModemProtocol.XModemMode.Checksum:
expectedData = new List <List <byte> >(Enumerable.Repeat(new List <byte> {
context.Options.NAK
}, context.Options.ReceiverMaxNumberOfInitializationBytesInTotal));
break;
default:
expectedData.AddRange(Enumerable.Repeat(new List <byte> {
context.Options.C
}, context.Options.ReceiverMaxNumberOfInitializationBytesForCRC));
expectedData.AddRange(Enumerable.Repeat(new List <byte> {
context.Options.NAK
}, context.Options.ReceiverMaxNumberOfInitializationBytesInTotal - context.Options.ReceiverMaxNumberOfInitializationBytesForCRC));
break;
}
// Run test, and catch inevitable XModemProtocolException.
excThrown = false;
try {
ini.Initialize(context);
}
catch (XModemProtocolException ex) {
excThrown = ex.AbortArgs.Reason == XModemProtocol.XModemAbortReason.InitializationFailed;
}
// Test to see if XModemProtocolException was thrown, and reason was XModemProtocol.XModemAbortReason.InitializationFailed.
Assert.IsTrue(excThrown);
// Test to see if communicator read expected data which was receiver attempting to begin communication.
Assert.AreEqual(expectedData, communicator.BytesRead);
// Clear communicator buffers.
communicator.BytesToSend = null;
communicator.BytesRead = null;
}
// Test cancellation function of initializer.
excThrown = false;
context.Token = cts.Token;
Task testRun = Task.Run(() => {
try {
ini.Initialize(context);
}
catch (XModemProtocolException ex) {
excThrown = ex.AbortArgs.Reason == XModemProtocol.XModemAbortReason.Cancelled;
}
});
Task.Run(() => cts.Cancel());
testRun.Wait();
// Test to see if XModemProtocolException was thrown, and reason was XModemProtocol.XModemAbortReason.Cancelled.
Assert.IsTrue(excThrown);
}
public void InitializeSendTest()
{
IContext context = new Context();
var communicator = new ComSendCollection();
var cts = new CancellationTokenSource();
IInitializer ini = new InitializeSend();
var options = new XModemProtocolOptions();
bool excThrown = false;
// Attach communicator.
context.Communicator = communicator;
// Drop options to speed up test.
options.SenderInitializationTimeout = 1000;
context.Options = options;
// 1). Test to see if CRC initialization is accepted by OneK, and CRC
// and if checksum initialization is accepted by Checksum.
// Modes to test in succeeding loop.
var modes = new XModemProtocol.XModemMode[] {
XModemProtocol.XModemMode.OneK,
XModemProtocol.XModemMode.CRC,
XModemProtocol.XModemMode.Checksum,
};
foreach (var mode in modes)
{
context.Mode = mode;
// Assign proper initialization byte by mode.
switch (mode)
{
case XModemProtocol.XModemMode.Checksum:
communicator.BytesToSend = new List <byte> {
context.Options.NAK
};
break;
default:
communicator.BytesToSend = new List <byte> {
context.Options.C
};
break;
}
ini.Initialize(context);
// Test to see if mode is does not change.
Assert.AreEqual(mode, context.Mode);
}
// 2). Test to see if checksum byte downgrades CRC and OneK to
// Checksum.
// Modes to test in succeeding loop.
modes = new XModemProtocol.XModemMode[] {
XModemProtocol.XModemMode.OneK,
XModemProtocol.XModemMode.CRC,
};
communicator.BytesToSend = new List <byte> {
context.Options.NAK
};
foreach (var mode in modes)
{
context.Mode = mode;
// Test to see if mode changes.
ini.Initialize(context);
Assert.AreEqual(XModemProtocol.XModemMode.Checksum, context.Mode);
}
// 3). Test to see if Checksum mode will not respond to CRC initialization.
communicator.BytesToSend = new List <byte> {
context.Options.C
};
try {
ini.Initialize(context);
}
catch (XModemProtocolException ex) {
excThrown = ex.AbortArgs.Reason == XModemProtocol.XModemAbortReason.InitializationFailed;
}
// Test to see if XModemProtocolException was thrown, and reason was XModemProtocol.XModemAbortReason.InitializationFailed.
Assert.IsTrue(excThrown);
// 4). Test timeout function of initializer.
communicator.BytesToSend = null;
excThrown = false;
try {
ini.Initialize(context);
}
catch (XModemProtocolException ex) {
excThrown = ex.AbortArgs.Reason == XModemProtocol.XModemAbortReason.InitializationFailed;
}
// Test to see if XModemProtocolException was thrown, and reason was XModemProtocol.XModemAbortReason.InitializationFailed.
Assert.IsTrue(excThrown);
// 5). Test cancellation function of initializer.
excThrown = false;
context.Token = cts.Token;
Task testRun = Task.Run(() => {
try {
ini.Initialize(context);
}
catch (XModemProtocolException ex) {
excThrown = ex.AbortArgs.Reason == XModemProtocol.XModemAbortReason.Cancelled;
}
});
Task.Run(() => cts.Cancel());
testRun.Wait();
// Test to see if XModemProtocolException was thrown, and reason was XModemProtocol.XModemAbortReason.Cancelled.
Assert.IsTrue(excThrown);
}
public void NAKResendTest()
{
var cts = new CancellationTokenSource();
var communicator = new ComSendCollection();
IInvoker invoker = new InvokeSend();
IContext context = new Context {
Communicator = communicator,
Token = cts.Token,
};
context.Data = _randomDataGenerator.GetRandomData(10000).ToList();
// Construct responses.
// 1). Refuse first packet twice before accepting.
// 2). Refuse second packet.
// 3). Send non-sensical byte.
// 4). Send cancellation request.
var nakCollection = new List <byte> {
context.Options.NAK
};
var ackCollection = new List <byte> {
context.Options.ACK
};
var canCollection = Enumerable.Repeat(context.Options.CAN, context.Options.CancellationBytesRequired);
communicator.CollectionToSend = new List <List <byte> > {
nakCollection,
nakCollection,
ackCollection,
nakCollection,
new List <byte> {
context.Options.SUB
},
canCollection.ToList()
};
// Construct expected data to be received.
// 1). First packet should be sent thrice.
// 2). Second packet should be sent twice.
var expectedData = new List <List <byte> >();
for (int i = 0; i < 3; i++)
{
expectedData.Add(context.Packets[0]);
}
for (int i = 0; i < 2; i++)
{
expectedData.Add(context.Packets[1]);
}
bool excThrown = false;
try {
communicator.BytesRead = new List <List <byte> >();
invoker.Invoke(context);
}
catch (XModemProtocolException ex) {
excThrown = ex.AbortArgs.Reason == XModemProtocol.XModemAbortReason.CancellationRequestReceived;
}
Assert.IsTrue(excThrown);
Assert.AreEqual(expectedData, communicator.BytesRead);
}
