@TechReport{	  it:2006-045,
  author	= {Anders Hessel and Paul Pettersson},
  title		= {Model-Based Testing of a {WAP} Gateway: an Industrial
		  Case-Study},
  institution	= {Department of Information Technology, Uppsala University},
  department	= {Division of Computer Systems},
  year		= {2006},
  number	= {2006-045},
  month		= sep,
  abstract	= {We present experiences from a case study where a
		  model-based approach to black-box testing is applied to
		  verify that a Wireless Application Protocol (WAP) gateway
		  conforms to its specification. The WAP gateway is developed
		  by Ericsson and used in mobile telephone networks to
		  connect mobile phones with the Internet. We focus on
		  testing the software implementing the session (WSP) and
		  transaction (WTP) layers of the WAP protocol. These layers,
		  and their surrounding environment, are described as a
		  network of timed automata. To model the many sequence
		  numbers (from a large domain) used in the protocol, we
		  introduce an abstraction technique. We believe the
		  suggested abstraction technique will prove useful to model
		  and analyse other similar protocols with sequence numbers,
		  in particular in the context of model-based testing.
		  
		  A complete test bed is presented, which includes generation
		  and execution of test cases. It takes as input a model and
		  a coverage criterion expressed as an observer, and returns
		  a verdict for each test case. The test bed includes
		  existing tools from Ericsson for test-case execution. To
		  generate test suites, we use our own tool \textsc{Cover}
		  --- a new test-case generation tool based on the real-time
		  model-checker \textsc{Uppaal}.}
}