karma.config.js

const buble = require('rollup-plugin-buble');
const commonjs = require('rollup-plugin-commonjs');
const nodeResolve = require('rollup-plugin-node-resolve');
const uglify = require('rollup-plugin-uglify');
const minify = require('uglify-js-harmony').minify;
const builtins = require('rollup-plugin-node-builtins');
const globals = require('rollup-plugin-node-globals');
const babel = require('rollup-plugin-babel');
const eslint = require('rollup-plugin-eslint');
const replace = require('rollup-plugin-replace');
const includePaths = require('rollup-plugin-includepaths');
const inject = require('rollup-plugin-inject');

// Karma configuration
module.exports = function(config) {
  config.set({

    // base path that will be used to resolve all patterns (eg. files, exclude)
    basePath: '',


    // frameworks to use
    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
    frameworks: ['jasmine'],


    // list of files / patterns to load in the browser
    files: [
      'tests/**/**/*Test.js'
    ],


    // list of files to exclude
    exclude: [
    ],


    // preprocess matching files before serving them to the browser
    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
    preprocessors: {
      'tests/**/**/*Test.js': ['rollup']
    },


    // test results reporter to use
    // possible values: 'dots', 'progress'
    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
    reporters: ['spec'],


    // web server port
    port: 9876,


    // enable / disable colors in the output (reporters and logs)
    colors: true,


    // level of logging
    // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
    logLevel: config.LOG_INFO,


    // enable / disable watching file and executing tests whenever any file changes
    autoWatch: true,


    // start these browsers
    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
    browsers: ['Firefox','Chrome'],

    // Continuous Integration mode
    // if true, Karma captures browsers, runs the tests and exits
    singleRun: true,

    // Concurrency level
    // how many browser should be started simultaneous
    concurrency: Infinity,

    // Rollup pre-processor settings
    rollupPreprocessor: {

      // rollup settings. See Rollup documentation
      plugins: [
        globals(),
        builtins(),
        nodeResolve({
          jsnext: false,
          main: true,
          browser: true
        }),
        commonjs({
          include: ['node_modules/**'],
        }),
        eslint({
          exclude: [
            'tests/**',
            'build/**',
            'lib/**',
            'node_modules/**'
          ]
        }),
        // babel({
        //   exclude: ['node_modules/**'],
        // }),
        replace({
          exclude: 'node_modules/**',
          ENV: JSON.stringify(process.env.NODE_ENV || 'development')
        })
        //buble(), // ES2015 compiler by the same author as Rollup
        // uglify({
        //   // mangle: false, // VERY IMPORTANT!
        //   // compress: {
        //   //   keep_fnames: true // VERY IMPORTANT!
        //   // }
        // }, minify) // TODO: Plugin fails
      ],
      // will help to prevent conflicts between different tests entries
      format: 'iife',
      sourceMap: 'inline'
    }
  })
};