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Unit Testing in geWorkbench

Unit Testing in geWorkbench. Ideally, we would like a Model-View-Controller design for framework and all components. In MVC, the View and the Controller both depend on the Model, and the View also depends on the Controller.

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Unit Testing in geWorkbench

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  1. Unit Testing in geWorkbench

  2. Ideally, we would like a Model-View-Controller design for framework and all components. • In MVC, the View and the Controller both depend on the Model, and the View also depends on the Controller. • This allows us to do unit testing on the model and the controller without having to deal with the View.

  3. MVC Diagram

  4. Desired Testing Strategy • Model – Unit testing with JUnit. • Controller – Unit testing with JUnit. • View – Manual System testing by QA staff. • However, geWorkbench is not MVC!

  5. geWorkbench is M(VC)

  6. Components that are MVC • Hierarchical Clustering • Support Vector Machine • ARACNE

  7. Components that are Almost MVC • SOM Clustering • All file parsers • All analyses, normalizers and filters (reference their GUI forms directly to get parameters)

  8. Components that are not MVC • Reverse Engineering • Marker Annotations • Gene Ontology • GSEA • Sequence Retriever • Synteny • Promoter Panel • Sequence Alignment Panel

  9. Steps to Make geWorkbench More Testable • Refactor analyses, normalizers and filters so that they are properly MVC. • Refactor progress bars and other minor Swing interaction out of file parsers and analyses. • Address those components that are not even remotely MVC (either by large refactors or by rewrites).

  10. Testing Framework • In the main directory, and in each component directories, there is a test source directory. Put all test cases here. • Test cases should extend junit.framework.TestCase and have the word Test at the end of the classname. • The ant task run-junit runs all tests and puts results in to a report.

  11. Testing Guidelines • Consider “normal” input as well as degenerate input. • Try to ensure that your testing “splits” each if-statement (coverage). • Don’t just check for exceptions, compare output to known correct answers. • Build up utilities if needed to repeatedly check similar conditions. • The Apache Commons Collections have excellent testing that is worth studying: http://www.apache.org/dist/jakarta/commons/collections/source/

  12. The End

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