123 lines
3.7 KiB
Markdown
123 lines
3.7 KiB
Markdown
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# karma-coverage
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[](https://github.com/karma-runner/karma-coverage)
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[](https://www.npmjs.com/package/karma-coverage) [](https://www.npmjs.com/package/karma-coverage)
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[](https://travis-ci.org/karma-runner/karma-coverage) [](https://david-dm.org/karma-runner/karma-coverage) [](https://david-dm.org/karma-runner/karma-coverage#info=devDependencies)
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> Generate code coverage using [Istanbul].
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## Installation
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The easiest way is to install `karma-coverage` as a `devDependency`,
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by running
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```bash
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npm install karma karma-coverage --save-dev
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```
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## Configuration
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For configuration details see [docs/configuration](docs/configuration.md).
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## Examples
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### Basic
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```javascript
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// karma.conf.js
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module.exports = function(config) {
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config.set({
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files: [
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'src/**/*.js',
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'test/**/*.js'
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],
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// coverage reporter generates the coverage
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reporters: ['progress', 'coverage'],
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preprocessors: {
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// source files, that you wanna generate coverage for
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// do not include tests or libraries
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// (these files will be instrumented by Istanbul)
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'src/**/*.js': ['coverage']
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},
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// optionally, configure the reporter
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coverageReporter: {
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type : 'html',
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dir : 'coverage/'
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}
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});
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};
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```
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### CoffeeScript
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For an example on how to use with [CoffeeScript](http://coffeescript.org/)
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see [examples/coffee](examples/coffee). For an example of how to use with
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CoffeeScript and the RequireJS module loader, see
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[examples/coffee-requirejs](examples/coffee-requirejs) (and also see
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the `useJSExtensionForCoffeeScript` option in
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[docs/configuration.md](docs/configuration.md)).
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### Advanced, multiple reporters
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```javascript
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// karma.conf.js
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module.exports = function(config) {
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config.set({
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files: [
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'src/**/*.js',
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'test/**/*.js'
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],
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reporters: ['progress', 'coverage'],
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preprocessors: {
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'src/**/*.js': ['coverage']
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},
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coverageReporter: {
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// specify a common output directory
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dir: 'build/reports/coverage',
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reporters: [
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// reporters not supporting the `file` property
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{ type: 'html', subdir: 'report-html' },
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{ type: 'lcov', subdir: 'report-lcov' },
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// reporters supporting the `file` property, use `subdir` to directly
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// output them in the `dir` directory
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{ type: 'cobertura', subdir: '.', file: 'cobertura.txt' },
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{ type: 'lcovonly', subdir: '.', file: 'report-lcovonly.txt' },
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{ type: 'teamcity', subdir: '.', file: 'teamcity.txt' },
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{ type: 'text', subdir: '.', file: 'text.txt' },
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{ type: 'text-summary', subdir: '.', file: 'text-summary.txt' },
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]
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}
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});
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};
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```
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### FAQ
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#### Don't minify instrumenter output
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When using the istanbul instrumenter (default), you can disable code compaction by adding the following to your configuration.
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```javascript
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// karma.conf.js
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module.exports = function(config) {
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config.set({
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coverageReporter: {
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instrumenterOptions: {
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istanbul: { noCompact: true }
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}
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}
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});
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};
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```
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----
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For more information on Karma see the [homepage].
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[homepage]: http://karma-runner.github.com
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[Istanbul]: https://istanbul.js.org
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