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However, you normally won ??™ t have to execute
the entire model. Of utmost importance are the critical areas, including complex
and error-prone fl ows, or the analysis of design alternatives.
There is currently no literature available on executable SysML models.
Executable UML models are described, e.g., in [32] and [11]. ARTiSAN Studion
and Telelogic Rhapsody are SysML/UML tools that support model simulations.
2.8.3 Testing
Testing is a highly significant issue in development processes, especially for system
engineers. Nevertheless, it landed in the marginal notes in this book. The reason is
that it is far too complex to be discussed in detail within the scope and volume of
this book. I ??™ ll just highlight a few points in this section.
A test verifi es the requirements for correct and complete realization or fulfi llment.
SysML lets you also create a test model. Block diagrams are used to describe
the required test structures, while behavior diagrams, such as activity or sequence
FIGURE 2-88
Variants for domain blocks.


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