Cover report from Common Test when using rebar

Question

I have an Erlang application that uses Rebar, and has tests written using Common Test. I'd like to see the test coverage report for these tests, so I included the following line in my rebar.config file:

{cover_enabled, true}.

However, the "Coverage log" link in the Common Test report just leads to a page that says "Cover tool is not used". How can I get it to use the cover tool and give me a cover report when running the tests?

Answer 1

The cover_enabled setting in rebar.config is necessary but not sufficient to activate cover reports for Common Test. You also need to create a file called cover.spec in the root directory of your application, containing:

{incl_app, foo, details}.

(Substitute the name of your application for foo.)

That should give you a cover report for your application.