karma.conf.js

var common = require('./webpack.common.js')

module.exports = function (config) {
    'use strict'
    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 to exclude
        exclude: [],

        files: [
            {
                pattern: 'test/Util/*.ts',
                included: false
            },
            {
                pattern: 'test/**/*.ts',
                included: true
            }, {
                // exclude Sibelius files, Karma somehow fails to parse them (e.g. test_clef_measure_end_backup_nodes_Sibelius),
                //   leading to test failure, no tests being executed
                pattern: 'test/data/*Sibelius*',
                included: false,
                watched: false,
                served: true
            }, {
                pattern: 'test/data/*.xml',
                included: true
            }, {
                pattern: 'test/data/*.musicxml',
                included: true
            }, {
                pattern: 'test/data/*.mxl.base64',
                included: true
            }, {
                pattern: 'test/data/*.mxl',
                included: false,
                watched: false,
                served: true
            }
        ],

        // preprocess matching files before serving them to the browser
        // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
        preprocessors: {
            'test/data/*.xml': ['xml2js'],
            'test/data/*.musicxml': ['xml2js'],
            'test/data/*.mxl.base64': ['base64-to-js'],
            // add webpack as preprocessor
            'test/**/*.ts': ['webpack']
        },

        webpack: {
            // karma watches the test entry points
            // (you don't need to specify the entry option)
            // webpack watches dependencies

            // copy parts of webpack configuration to use minimal effort here
            devtool: process.env.CI ? false : 'inline-source-map',
            mode: process.env.CI ? 'production' : 'development',
            module: {
                rules: common.module.rules
            },
            resolve: common.resolve
        },

        // Required for Firefox and Chrome to work
        // see https://github.com/webpack-contrib/karma-webpack/issues/188
        mime: {
            'text/x-typescript': ['ts']
        },

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

        // web server port
        port: 9876,
        // timeout in ms:
        browserNoActivityTimeout: 100000, // default 10000
        browserDisconnectTimeout: 10000, // default 2000
        browserDisconnectTolerance: 1, // default 0
        captureTimeout: 60000,
        // 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,

        client: {
            captureConsole: true,
            mocha: {
                timeout: process.env.timeout || 20000
            }
        },

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

        // start these browsers
        browsers: ['FirefoxHeadless'],

        // For security reasons, Google Chrome is unable to provide sandboxing
        // when it is running in container-based environments (e.g. CI).
        customLaunchers: {
            ChromeHeadlessNoSandbox: {
                base: 'ChromeHeadless',
                flags: ['--no-sandbox',
                    '--disable-web-security']
            },
            ChromeNoSecurity: {
                base: 'Chrome',
                flags: ['--disable-web-security']
            }
        },

        // 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
    })
}