I was able to solve this with the help of JetBrains. Somehow this solves itself if you add a jsTestDriver adapter for QUnit. WebStorm comes bundled with this one.
My updated jsTestDriver.conf
looks like this:
load:
- libs/qunit-jstd-adapter/equiv.js
- libs/qunit-jstd-adapter/QUnitAdapter.js
- libs/jquery/jquery.js
- src/*.js
test:
- test/*.js
I'm pasting the instructions I got from JetBrains (with slight modification) which helped me solve the issue:
1) delete jquery.combine/libs/qunit/qunit.js - doing so will make symbols 'test' and 'module' unresolved,
2) open jquery.combine/test/difference.tests.js and position test cursor on any 'test' function call, wait alittle and you'll see the suggestion: "Add QUnit JsTestDriver adapter? Alt+Enter" Invoking this quick fix will open a dialog, where you should specify a directory where "QUnit JsTestDriver Adapter" files will be added.
3) As equiv.js and QUnitAdapter.js files are located inside your project, load them in jsTestDriver.conf
4) Now right-click jsTestDriver.conf and select run (JsTestDriver server should be up and have a captured browser).