{"id":155840,"date":"2006-01-01T00:00:00","date_gmt":"2006-01-01T00:00:00","guid":{"rendered":"https:\/\/www.microsoft.com\/en-us\/research\/msr-research-item\/mock-object-generation-with-behavior\/"},"modified":"2018-10-16T20:08:27","modified_gmt":"2018-10-17T03:08:27","slug":"mock-object-generation-with-behavior","status":"publish","type":"msr-research-item","link":"https:\/\/www.microsoft.com\/en-us\/research\/publication\/mock-object-generation-with-behavior\/","title":{"rendered":"Mock-object generation with behavior"},"content":{"rendered":"<div class=\"asset-content\">\n<p>Unit testing is a popular way to guide software development and testing. Each unit test should target a single feature, but in practice it is difficult to test features in isolation. Mock objects are a well-known technique to substitute parts of a program which are irrelevant for a particular unit test. Today mock objects are usually written manually supported by tools that generate method stubs or distill behavior from existing programs. We have developed a prototype tool based on symbolic execution of .NET code that generates mock objects including their behavior by analyzing all uses of the mock object in a given unit test. It is not required that an actual implementation of the mocked behavior exists. We are working towards an integration of our tool into Visual Studio Team System<\/p>\n<\/div>\n<p><!-- .asset-content --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Unit testing is a popular way to guide software development and testing. Each unit test should target a single feature, but in practice it is difficult to test features in isolation. Mock objects are a well-known technique to substitute parts of a program which are irrelevant for a particular unit test. Today mock objects are [&hellip;]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"msr-url-field":"","msr-podcast-episode":"","msrModifiedDate":"","msrModifiedDateEnabled":false,"ep_exclude_from_search":false,"_classifai_error":"","msr-author-ordering":[{"type":"user_nicename","value":"nikolait"},{"type":"user_nicename","value":"schulte"}],"msr_publishername":"IEEE Computer Society","msr_publisher_other":"","msr_booktitle":"","msr_chapter":"","msr_edition":"Automated Software Engineering, 2006. ASE '06. 21st IEEE\/ACM International Conference on","msr_editors":"","msr_how_published":"","msr_isbn":"0-7695-2579-2","msr_issue":"","msr_journal":"","msr_number":"","msr_organization":"","msr_pages_string":"365-368","msr_page_range_start":"365","msr_page_range_end":"368","msr_series":"","msr_volume":"","msr_copyright":"Copyright \u00a9 2007 IEEE. Reprinted from IEEE Computer Society. This material is posted here with permission of the IEEE. 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Pex is a Visual Studio add-in for testing .NET Framework applications. Moles supports unit testing by providing isolation by way of detours and stubs. The Moles framework is provided with Pex, or can be installed by itself as a Microsoft Visual Studio add-in. NEW: IntelliTest in Visual Studio 2015 is the evolution of Pex. 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