public void TestSetFilterByControlMessage()
{
// create messages to send to the queue
IPipeMessage message = new Message(Message.NORMAL, new { width = 100, height = 20 });
// create filter, attach an anonymous listener to the filter output to receive the message,
// pass in an anonymous function and an anonymous parameter object
IPipeFitting filter = new Filter("scale", new PipeListener(this, CallBackMethod), (IPipeMessage msg, object _params) => {
msg.Header = new
{
width = ((dynamic)msg.Header).width * ((dynamic)_params).factor,
height = ((dynamic)msg.Header).height * ((dynamic)_params).factor
};
return(true);
}, new { factor = 10 });
// create setFilter control message
IPipeMessage setFilterMessage = new FilterControlMessage(FilterControlMessage.SET_FILTER, "scale", (IPipeMessage msg, object _params) =>
{
msg.Header = new
{
width = ((dynamic)msg.Header).width / ((dynamic)_params).factor,
height = ((dynamic)msg.Header).height / ((dynamic)_params).factor
};
return(true);
});
// write filter control message to the filter
bool setFilterWritten = filter.Write(setFilterMessage);
// write normal message to the filter
bool written = filter.Write(message);
// test assertions
Assert.IsTrue(message is IPipeMessage, "Expecting message is IPipeMessage");
Assert.IsTrue(filter is Filter, "Expecting filter is Filter");
Assert.IsTrue(setFilterWritten, "Expecting wrote message to filter");
Assert.IsTrue(written, "Expecting wrote normal message to filter");
Assert.IsTrue(messagesReceived.Count == 1, "Expecting received 1 messages");
// test filtered message assertions (message filtered with overridden filter function)
IPipeMessage received = messagesReceived[0];
messagesReceived.RemoveAt(0);
Assert.IsTrue(received is Message, "Expecting received is Message");
Assert.IsTrue(received == message, "Expecting received == message");
Assert.IsTrue(((dynamic)received.Header).width == 10, "Expecting ((dynamic)received2.Header).width == 10");
Assert.IsTrue(((dynamic)received.Header).height == 2, ((dynamic)received.Header).height + "Expecting ((dynamic)received2.Header).height == 2");
}
public void TestBypassAndFilterModeToggle()
{
// create messages to send to the queue
IPipeMessage message = new Message(Message.NORMAL, new { width = 10, height = 2 });
// create filter, attach an anonymous listener to the filter output to receive the message,
// pass in an anonymous function an parameter object
IPipeFitting filter = new Filter("scale", new PipeListener(this, CallBackMethod), (IPipeMessage msg, object _params) => {
msg.Header = new
{
width = ((dynamic)msg.Header).width * ((dynamic)_params).factor,
height = ((dynamic)msg.Header).height * ((dynamic)_params).factor
};
return(true);
}, new { factor = 10 });
// create bypass control message
IPipeMessage byPassMessage = new FilterControlMessage(FilterControlMessage.BYPASS, "scale");
// write bypass control message to the filter
bool bypassWritten = filter.Write(byPassMessage);
// write normal message to the filter
bool written1 = filter.Write(message);
// test assertions
Assert.IsTrue(message is IPipeMessage, "Expecting message is IPipeMessage");
Assert.IsTrue(filter is Filter, "Expecting filter is Filter");
Assert.IsTrue(bypassWritten, "Expecting wrote bypass message to filter");
Assert.IsTrue(written1, "Expecting wrote normal message to filter");
Assert.IsTrue(messagesReceived.Count == 1, "Expecting received 1 messages");
// test filtered message assertions (no change to message)
IPipeMessage received1 = messagesReceived[0];
messagesReceived.RemoveAt(0);
Assert.IsTrue(received1 == message, "Expecting received == message");
Assert.IsTrue(((dynamic)received1.Header).width == 10, "Expecting ((dynamic)received1.Header).width == 10");
Assert.IsTrue(((dynamic)received1.Header).height == 2, "((dynamic)received1.Header).height == 2");
// create filter control message
IPipeMessage filterMessage = new FilterControlMessage(FilterControlMessage.FILTER, "scale");
// write bypass control message to the filter
bool filterWritten = filter.Write(filterMessage);
// write normal message to the filter again
bool written2 = filter.Write(message);
// test assertions
Assert.IsTrue(filterWritten, "Expecing worte filter message to filter");
Assert.IsTrue(written2, "Expecting wrote normal message to filter");
Assert.IsTrue(messagesReceived.Count == 1, "Expecing received 1 messages");
// test filtered message assertions (message filtered)
IPipeMessage received2 = messagesReceived[0];
messagesReceived.RemoveAt(0);
Assert.IsTrue(received2 is IPipeMessage, "Expecting received 2 is IPipeMessage");
Assert.IsTrue(received2 == message, "received2 == message");
Assert.IsTrue(((dynamic)received2.Header).width == 100, "Expecting ((dynamic)received2.Header).width == 100");
Assert.IsTrue(((dynamic)received2.Header).height == 20, "Expecting ((dynamic)received2.Header).height == 20");
}