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Cas2010 herramientas-de-pruebas-unitarias-pex-y-moles
Pex and Moles are unit testing tools for .NET that allow automatically generating test cases (Pex) and replacing .NET methods with mocks (Moles). Pex uses a constraint solver to systematically generate inputs that achieve high code coverage with minimal tests. Moles provides two types of mocking: stub types for virtual methods, and mole types that rewrite code at runtime but have performance overhead. The document discusses these tools and how they can help with isolating dependencies in unit tests.
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- 1. Haciendo realidad laagilidad Herramientas de pruebas unitarias Pex y Moles Ibon Landa © flioukas Plain Concepts http://www.plainconcepts.com http://geeks.ms/blogs/ilanda 1 lunes 21 de junio de 2010
- 2. Pex & Moles White box unit testing tool for .Net Microsoft Research Visual Studio 2008/2010 add-in Free for personal use or with MSDN license Support multiple testing frameworks 2 lunes 21 de junio de 2010
- 3. Pex = ProjectExploration Helps with writing unit tests Analyze the branch conditions Create simple parameterized unit tests automatically Uses a constraint solver to systematically generate relevant inputs 3 lunes 21 de junio de 2010
- 4. Pex The result is a minimal test suite with maximum code coverage 4 lunes 21 de junio de 2010
- 5. ¿What is Moles? Lightweight mocking Allows replacing any .NET method with a delegate Isolate from environment dependencies such as time, file system, database… Two Types: Stub & Moles Type 5 lunes 21 de junio de 2010
- 6. Stub Type Rely on virtual method dispatch Cannot be used for static methods, non-virtual methods, sealed virtual methods, methods in sealed types.. Self-contained Provide implementations of interfaces and abstract methods 6 lunes 21 de junio de 2010
- 7. Moles Type Rely on runtime code rewriting Significant performance degradation in execution time CLR profiler Cannot instrument interfaces and abstract methods 7 lunes 21 de junio de 2010
- 8. Haciendo realidad laagilidad Herramientas de pruebas unitarias Pex y Moles Ibon Landa © flioukas Plain Concepts http://www.plainconcepts.com http://geeks.ms/blogs/ilanda 8 lunes 21 de junio de 2010