Incorrect Coverage

The current coverage being generated does not reflect the source. At the moment, since the test files are so simple, it’s hard to notice. However, when a more complex class and test spec is introduced, we get errors when the coverage points to lines that don’t match up to the source file.

I believe the problem is that rollup-plugin-stanbul is instrumenting the wrong file. I’ve tried with no luck to try and get either the karma-remap-istanbul or the karma-remap-coverage working to compensate.

[hotforfeature]

Thanks @marcoturi, it’s working now after I updated my repository to match.

Quick note if anybody finds this issue and is still having problems: it is critical that "istanbul-instrumenter-loader": "0.2.0" is set in package.json. A regular npm install --save-dev istanbul-instrumenter-loader will save a later version beyond 0.2.0 that causes similar Cannot read property 'text' of undefined errors.

[duydao]

Sure, this is the relevant configuration in karma.conf.js:

    reporters: ['mocha', 'coverage', 'remap-coverage'],
    coverageReporter: {
      type: 'in-memory'
    },
    remapCoverageReporter: {
      'text-summary': null, // to show summary in console
      html: './coverage/html'
    },