karma.conf.js

/*
 * Copyright (c) 2021 Digital Bazaar, Inc. All rights reserved.
 */
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: ['mocha', 'chai'],

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

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

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

    webpack: {
      //mode: 'production',
      mode: 'development',
      devtool: 'inline-source-map'
    },

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

    // 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 test whenever any
    // file changes
    autoWatch: false,

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

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

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

    // Mocha
    client: {
      mocha: {
        // increase from default 2s
        timeout: 10000,
        reporter: 'html'
        //delay: true
      }
    }
  });
};