A karma reporter that uses the latest istanbul 1.x APIs (with full sourcemap support) to report coverage.
This is a reporter only and does not perform the actual instrumentation of your code. Babel users should use the istanbul babel plugin to instrument your code and webpack + typescript users should use the istanbul-instrumenter-loader and then use this karma reporter to do the actual reporting. See the test config for an e2e example of how to combine them.
npm install karma-coverage-istanbul-reporter --save-dev// karma.conf.js
const path = require('path');
module.exports = function (config) {
config.set({
// ... rest of karma config
// anything named karma-* is normally auto included so you probably dont need this
plugins: ['karma-coverage-istanbul-reporter'],
reporters: ['coverage-istanbul'],
// any of these options are valid: https://github.com/istanbuljs/istanbul-api/blob/47b7803fbf7ca2fb4e4a15f3813a8884891ba272/lib/config.js#L33-L38
coverageIstanbulReporter: {
// reports can be any that are listed here: https://github.com/istanbuljs/istanbul-reports/tree/590e6b0089f67b723a1fdf57bc7ccc080ff189d7/lib
reports: ['html', 'lcovonly', 'text-summary'],
// base output directory. If you include %browser% in the path it will be replaced with the karma browser name
dir: path.join(__dirname, 'coverage'),
// if using webpack and pre-loaders, work around webpack breaking the source path
fixWebpackSourcePaths: true,
// stop istanbul outputting messages like `File [${filename}] ignored, nothing could be mapped`
skipFilesWithNoCoverage: true,
// Most reporters accept additional config options. You can pass these through the `report-config` option
'report-config': {
// all options available at: https://github.com/istanbuljs/istanbul-reports/blob/590e6b0089f67b723a1fdf57bc7ccc080ff189d7/lib/html/index.js#L135-L137
html: {
// outputs the report in ./coverage/html
subdir: 'html'
}
},
// enforce percentage thresholds
// anything under these percentages will cause karma to fail with an exit code of 1 if not running in watch mode
thresholds: {
emitWarning: false, // set to `true` to not fail the test command when thresholds are not met
global: { // thresholds for all files
statements: 100,
lines: 100,
branches: 100,
functions: 100
},
each: { // thresholds per file
statements: 100,
lines: 100,
branches: 100,
functions: 100,
overrides: {
'baz/component/**/*.js': {
statements: 98
}
}
}
}
}
});
}- clover
- cobertura
- html
- json-summary
- json
- lcov
- lcovonly
- none
- teamcity
- text-lcov
- text-summary
- text
MIT