OpenIGTLink/Library2

About OpenIGTLink Library version 2

The OpenIGTLink Library version 2 is being developed to support OpenIGTLink protocol version 2. To try the library version 2, please follow the instruction in the instruction to try version 2 protocol

Testing

The library version 2 will provide more comprehensive testing than version 1. Specifically, it will provide server-client communication tests, which are not available in version 1.

Strategy

Xenios Papademitris suggested:

1. Setting a "server" program that gets initialized at the start of the ctest process that simply accepts messages and dumps them to a file (with predefined filenames). Then you can compare what you sent with what it received.
2. Having a multithreaded test where the server is on one thread and the client on another ....

According to Andinet Enquobahrie,

• OpenIGTLink relay in IGSTK uses threading for its test:

http://public.kitware.com/cgi-bin/viewcvs.cgi/Testing/igstkTrackerToolObserverToOpenIGTLinkRelayTest.cxx?revision=1.2&root=IGSTK&view=markup

static ITK_THREAD_RETURN_TYPE ReceiverThreadFunction(void* pInfoStruct);
static ITK_THREAD_RETURN_TYPE ObserverThreadFunction(void* pInfoStruct);
 

• Tube TK uses spawnv

http://gitorious.org/tubetk/tubetk/blobs/master/Applications/CLI/ReceivePositionMessageUsingOpenIGTLink/Testing/SendAndReceivePositionMessageUsingOpenIGTLinkTest.cxx

Test server

• Test server?
  • A client program binary and arguments are specified, when it is launched.
  • The test server runs the client program with specified arguments.
  • The client program sends a sequence of tests messages (described below)
  • After the client program exits, the server program returns the result to the CTest.

Test sequence

• Standard message tests
  • The client program pushes a series of messages to the server program.
  • At the end of the sequence, the server program creates a list of test results.
• Query tests 1: Client to Server
  • The client issues queries to the server. The server returns the result dummy messages.
  • At the end of the sequence, the client program creates a list of test results.
• Query test 2: Server to Client
  • The server issues queries to the server. The client returns the result dummy messages.
  • At the end of the sequence, the server program creates a list of test results.