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A Designer for Generating Complex Equipment Tests

A Designer for Generating Complex Equipment Tests. Instructed by: Ofir Erel Performed by: Adam Levi Marina Skarbovsky. Project Objectives. Create a GUI designer for generating complex unit tests from existing ones, which will enable:

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A Designer for Generating Complex Equipment Tests

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  1. A Designer for Generating Complex Equipment Tests Instructed by: Ofir Erel Performed by: Adam Levi Marina Skarbovsky

  2. Project Objectives • Create a GUI designer for generating complex unit tests from existing ones, which will enable: • Loading assemblies that contain unit-test classes and displaying them to the user. • Choosing test-cases from the loaded list and using them as building blocks for new tests. • Specifying the execution flow of the constructed test: • Execution order between inner test cases. • Serial / Parallel execution of test cases. • Delays between concurrently executed tests . • Setting test parameters for tests that require them.

  3. Project Objectives (cont.) • Compiling the new test into one (or both) of the following: • A DLL that is test case – so that the constructed test can be reused as a building block in future tests. • A DLL that is Test Fixture that wraps the test case – so that the constructed test can be run via Nunit. • Saving the tests for future usage. • Loading previously saved tests.

  4. Methodology • Microsoft’s .Net WinForms API was used to create the GUI. • We also used several free open-source GUI components to simplify the development of the docking GUI, options forms and more. • Reflection was used to enable: • Identifying the test classes in a loaded assembly. • Analyzing test parameter types. • Generate new test cases and assemblies from the compounded tests. • Object serialization was used to enable: • Saving/loading tests for future use. • Saving an instance of a test-case’ parameter to be used when executing a generated test-case • Multithreading was used to enable creating tests with concurrency. • Microsoft's XSD Object Generator was used for the creation of classes from XML Schemas. • The Generator was used mostly at the start of the project, and later was abandoned due to the XSD Object Generator limitations.

  5. Achievements • UI: • Supports all the required functionality such as loading assemblies, building and compiling new tests, editing test parameters and properties, etc... • Additional windows including the Grid-Output and the Options form were added to provide a better experience for the user (although they were not required by KLA-Tencor). • A “Complete package” – includes keyboard shortcuts for useful operations, tool bar, icons and more. • All of the UI was built with Microsoft’s Visual Studio “In mind” with the help of WeifenLuo'sDockSample, to make usage more intuitive to the “common” user. • Relatively long operations such as compilation and loads are executed in separate threads to avoid UI freezes.

  6. Achievements (cont.) • The Properties Window • A special window that enables the user to edit properties of different objects. • Similar to the Properties window in Visual Studio. • The window wraps a PropertyGrid object • A component that is part of the .Net framework • Provides support for displaying and editing all data types used by KLA-Tencor. • Our use of the PropertyGrid makes it easy for KLA-Tencor to extend it’s support for additional data types. • The PropertyGrid is widely used and is a well documented component.

  7. Achievements (cont.) • Compilation of new assemblies • Compilation of new assemblies is done with minimal ‘machine-generated’ code. • It is far easier to debug human written code. • Adding additional features to the application will require minimal (if any) interventions in the assembly-creation process. • Generating complex code might be slow. • Most of the generated test is actually an XML file that is embedded inside the generated assembly. • XML is human readable  • Several assemblies are embedded in the generated assembly to reduce dependencies • Enables us to create a “One Package” assembly.

  8. Achievements (cont.) • Saving/Loading • A test is saved as an XML file • The user can easily read and understand the generated file, if needed. • Installer • An installer was made using the free “Bytessence InstallMaker”. • Documentation provided • Users’ guide • Developers’ guide • An auto-generated code documentation • Generated Using Microsoft's “SandCastle” generator. • Has the familiar MSDN “Look and feel”.

  9. A word on the compilation process…

  10. Conclusions • When building a large system, good design is very important. • Well worth the time investment. • Using existing (free) source-code can save a lot of time and work. • Integration with the target system is crucial even after the application went through thorough testing. • The course is a good way to expose students to new technologies, gain some hands on experience with “real” software projects, get familiar with a project’s life-cycle and learn how to conduct oneself in a team.

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