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Chapter 8. openETCS Domain Framework Figure 8.23.: UML class diagram of the openETCS domain framework exception types It inherits from the ::std::exception class to provide easier collection of error information, especially during the implementation and testing cycles, because their content is automatically printed (to the console) in cases of an uncaught exception. The concrete domain framework exception types are: CMath Mathematical errors, e.g. a division by 0. CInput CInternal CUnknown Errors due to (false) input values in CFunctionBlock objects outside the definition space. Internal error in a CFunctionBlock object typically related to an error in a hardware component. Errors for which no category can be determined. This exception should never occur, but also must be included to ensure all error cases are included. All openETCS domain framework exception classes are located in the ::oECTS::DF::Error C++ name space. 8.7. Verification According to Req.5, the verification of the openETCS domain framework is an important issue because it covers most of the source code used for the EVC implementation. Not only to ensure the correctness of the implementation, but also to ensure the correct execution on a target platform, tests are used. Since the domain framework is implemented in an object-oriented manner, unit tests [6] are implemented. In general, unit testing focusses on the individual units of the source code to be tested. For object-oriented programming languages, like C++, those units are typically defined as the methods of classes, but this not explicitly required. 156
8.7. Verification Since C++ does not provide an implicit unit testing mechanism, the tests must be implemented manually or with the support of a unit testing framework. CppUnit [16] is a platform independent framework for creating test suites based on unit tests, which perfectly matches the requirements of the openETCS domain framework. In contrast to complete self implementation of unit tests, CppUnit already provides mechanisms for the test development and the collection and output of test results. 8.7.1. Unit Testing Design The CppUnit framework defines at its highest level so-called test suites, which are classes. Those test suites combine different (unit) test cases, which are methods of the test suite classes. In these test methods, assertions [79, 16] can be defined as Boolean expressions, which all must evaluate to true if the test method is executed successfully. The complete unit testing application or rather V&V test suite combines and executes all suites respectively all test methods. Since all classes of the domain framework (in name space ::oETCS::DF) are tested, Figure 8.24 shows only a subset of the complete relations of the unit testing design. Figure 8.24.: UML class diagram of the basic openETCS domain framework unit testing elements 157
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Open Source Software for Train Cont
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Datum des Promotionskolloquiums: 21
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Acknowledgments I would like to tha
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Abstract This document describes th
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Contents 3.3.3. Rascal . . . . . .
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Contents 8.4. Behavioural Design .
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Contents D.3. Domain Framework Mode
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List of Figures 6.4. Simple CORBA u
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List of Figures 10.27. General read
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Chapter 1. Introduction Railway Con
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Chapter 1. Introduction MontiCore M
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Chapter 1. Introduction ERTMS Forma
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Part I. Background 9
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Chapter 2. Concepts for Safe Railwa
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Chapter 3. Domain-Specific Modellin
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4The GOPPRR Meta Meta Model - An Ex
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4.1. Concrete Syntax Description Fo
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4.2. GOPPRR C++ Abstract Syntax Mod
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4.2. GOPPRR C++ Abstract Syntax Mod
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4.5. The Object Constraint Language
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4.5. The Object Constraint Language
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4.6. Tool Chain where artefacts are
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4.7. Conclusion External Artefacts
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Part II. Dependability 55
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Chapter 5. Verification and Validat
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6Security in Open Source Software A
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6.1. Memory Management Open Meta Me
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6.2. Hardware Virtualisation a fixe
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6.2. Hardware Virtualisation in a v
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6.2. Hardware Virtualisation Again,
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6.2. Hardware Virtualisation the fa
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Part III. openETCS Case Study 77
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Chapter 7. openETCS Meta Model far
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Chapter 7. openETCS Meta Model gEVC
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Chapter 7. openETCS Meta Model gEVC
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Chapter 7. openETCS Meta Model Outp
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Chapter 7. openETCS Meta Model List
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Chapter 7. openETCS Meta Model 7.5.
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Chapter 10. openETCS Model be expla
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Chapter 10. openETCS Model 10.4.4.
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11 openETCS Simulation Generally, a
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11.2. Platform Specific Model for t
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11.3. Simulation Model Figure 11.6.
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11.3. Simulation Model 11.3.2. CDMI
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11.3. Simulation Model sets the Boo
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11.3. Simulation Model Entering_Dri
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11.3. Simulation Model The states o
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11.3. Simulation Model Figure 11.13
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11.6. Conclusion about warnings, fa
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Chapter 12. Conclusion and Outlook
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Part IV. Appendix 241
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Appendix A. GOPPRR to MOF Transform
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Appendix B. openETCS Meta Model Con
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DopenETCS Domain Framework D.1. Dom
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D.2. Domain Framework Source Code 8
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D.3. Domain Framework Model 32 m_pT
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Appendix E. openETCS Generator 39 <
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Appendix E. openETCS Generator 200
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Appendix E. openETCS Generator 46 4
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FMetaEdit+ Generators F.1. GOPPRR X
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GopenETCS Unit Testing G.1. Unit Te
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Appendix H. openETCS Simulation 14
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Glossary ANTLR ANother Tool for Lan
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Glossary EVC An European Vital Comp
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Glossary OEM An original equipment
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Glossary XML The Extensible Markup
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Bibliography [12] “EN 50128 - Rai
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Bibliography [39] ——, ““Ope
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Bibliography [69] T. J. Parr and R.
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Index Artefact, 51 Automatic train
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Index Linux, 149 Memory management,
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