Code coverage functionality for NAV 2016 exists also in earlier versions (earliest though is NAV 2013 R2), only it is not integrated into standard application, but is a separate tool called NAV Application profiler. https://navappprofiler.codeplex.com/
Answers
I'm sorry but there is no Code Coverage in NAV2015... they put it back in 2016 only.
Good luck with your project.
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https://navappprofiler.codeplex.com/
This should help. It's for NAV 2013 and should apply to NAV 2015 also -
http://saurav-nav.blogspot.in/2013/06/code-coverage-for-dynamics-nav-2013.html
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Saurav Dhyani
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