Analyzing OpenCover Code Coverage tool in Visual Studio

In software testing process, Code Coverage analysis helps by finding areas which are not exercised by set of test cases of a program or to find defects in a program which are not exercised. It ensures testing of all key functional areas is carried out effectively and includes all essential features. The coverage information is very useful for many other related activities, like unit testing, regression testing, mutation testing etc. Code Coverage Analysis tools are used for Languages like Java, C, C++, Python etc. Working on testing code of programs helps to find problem/defects in particular software. For .NET applications, the only open source code coverage tool is OpenCover. It is easy to use and powerful tool. OpenCover doesn`t complain and just ignores the arguments it doesn`t recognize. Code instrumentation is not needed for using OpenCover tool. Producing PDB files in Opencover requires building the code into debug mode and run the application using OpenCover Prompt. OpenCover tool can be used for measuring code coverage of unit tests. This paper focuses on analyzing Opencover tool cove coverage analysis tool in detail. Keywords— Code coverage, Code Covereage tools, open cover tool, unit testing using OpenCover tool, ReportGenerator, Limitations

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