code coverage? about component-test

[Swatinem]

Would be really awesome, also to integrate with node-coveralls Is mocha-phantomjs up for the task?

[stephenmathieson]

@Swatinem idk if mocha-phantomjs will support it. setting that up on one my apps is on my todo list. if it's not, i plan on making it -- haha.

[Swatinem]

It’s been ages since I worked with mocha-phantomjs myself.
https://github.com/metaskills/mocha-phantomjs#jsoncov-reporter
Well there is this. No idea if that can easily be integrated with https://github.com/StevenLooman/mocha-lcov-reporter, to be used by https://github.com/cainus/node-coveralls though.

[matthewmueller]

Code coverage would be awesome.

[dominicbarnes]

+1

My current test harness uses CoverJS, but I would like to switch over to component-test because of how nicely it packages all these things together. :)

[Swatinem]

So I have played with this a bit and come up with: https://github.com/Swatinem/component-istanbul
This is just a small module that pipes files through istanbul for instrumentation.
Then you can use the extremely ugly command line to get a report:

$ mkdir -p coverage && component test phantom -R node_modules/component-istanbul/reporter.js > coverage/coverage.json && istanbul report

Comments welcome :-)

(oh, and you need the latest PR to have an uptodate mocha-phantomjs)

[Swatinem]

With my latest PR, you can just pass '--coverage coverage/coverage.json' and it will write to that file. I’m quite happy with that now.