karma.conf.ts

// tslint:disable-next-line:no-var-requires
const webpackConfig = require("./webpack.config.js");

const isPublishing = !!process.env.PUBLISHING;

module.exports = (config: any) => {
    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"],

        // list of files / patterns to load in the browser
        files: ["./index.spec.ts"],

        mime: {
            "text/x-typescript": ["ts", "tsx"],
        },

        // 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: {
            "**/*.ts": ["webpack", "sourcemap"],
        },

        webpack: webpackConfig,

        // 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,

        // 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,

        browserNoActivityTimeout: 300000,

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

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

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