Hi folks, many thanks for your hints and helpful links!

Am 28.10.2021 um 02:29 schrieb Jon Robson:
I recommend using Jest <https://mediawiki.org/wiki/Vue.js/Testing> for unit 
testing with code coverage.

In various Vue.js extensions including NearbyPages 
<https://github.com/wikimedia/mediawiki-extensions-NearbyPages> we use Jest 
which is recommended by the Vue.js migration team.

An alternative approach is to use QUnit. In MobileFrontend and Popups we use a 
command line version of QUnit. It’s not tied to Webpack in any way despite the title 
(it would work with packageFiles these days). 
(https://mediawiki.org/wiki/User:Jdlrobson/Developing_with_Webpack_and_ResourceLoader#Writing_unit_tests_and_getting_code_coverage_reports
 
<https://mediawiki.org/wiki/User:Jdlrobson/Developing_with_Webpack_and_ResourceLoader#Writing_unit_tests_and_getting_code_coverage_reports>)

When using command line unit testing you'll need to use @wikimedia/mw-node-qunit 
<https://github.com/wikimedia/mw-node-qunit> for providing a mock MediaWiki 
environment. Despite the name this library can be used with Jest (see NearbyPages for 
an example).

Hope this is helpful!

On Wed, Oct 27, 2021 at 7:51 AM planetenxin <planeten...@web.de 
<mailto:planeten...@web.de>> wrote:


    Hi Greg,

    actually I'm more interested in creating the coverage reports on a local 
dev box in the context of extension development / local CI (checking the 
coverage of newly created JS tests). I did find info about running JS tests but 
little to nothing about coverage. Maybe I missed something.

    /Alexander

    Am 27.10.2021 um 01:37 schrieb Greg Grossmeier:
     > On Tue, Oct 26, 2021 at 2:31 AM planetenxin <planeten...@web.de 
<mailto:planeten...@web.de> <mailto:planeten...@web.de <mailto:planeten...@web.de>>> 
wrote:
     >
     >     Is there a generic approach, how to get some coverage reports for 
the JavaScript parts of MW and MW extensions?
     >
     >
     > Is https://doc.wikimedia.org/cover/ <https://doc.wikimedia.org/cover/> 
<https://doc.wikimedia.org/cover/ <https://doc.wikimedia.org/cover/>> helpful in your 
case?
     >
     > --
     > | Greg Grossmeier              GPG: B2FA 27B1 F7EB D327 6B8E |
     > | Dir. Engineering Productivity     A18D 1138 8E47 FAC8 1C7D |
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