I have a problem running my tests, code coverage does not work, I have a message
Coverage information was not collected; exit without recording coverage information
I am writing my tests using ES6 and I am using babel to convert the code.
To solve the problem, I'm using the github project presented in this discussion: https://github.com/gotwarlost/istanbul/issues/496
The trick is to use
`babel-node ./node_modules/istanbul/lib/cli cover node_modules/mocha/bin/_mocha -- --require test-helper.js --bail --recursive 'src/js/__tests__/**/*.test.js'`
instead
"istanbul cover node_modules/mocha/bin/_mocha -- --compilers js:babel-core/register --require scripts/test-helper.js --recursive 'src/js/__tests__/**/*.test.js'"
This works well, but the problem is that the code coverage only takes into account the classes that you tested, and not all the classes you created.
If I add a new mod.js class to the src folder of the project, the coverage will be 100% for the app.js component. This is logical because it is fully tested, but the class mod.js in the report mod.js not appear in the report - it is not listed as a class with 0% verified ( https://github.com/JakeSidSmith/istanbul-no-coverage ).
I tried adding cover -x 'src/js/__tests__/**/*.test.js' but it does not work. I can’t mix the first style with the second.
Another problem is that in the above project example, test-helper.js is considered fully tested, and I cannot exclude it from the coverage using cover -x .
Is there another trick for properly covering code using ES6 / mocha and calling mocha babel-core/register ?
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