veritatisquam/packages/core/karma.conf.js

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// Karma configuration
module.exports = function (config) {
	const browsers = ['ChromeHeadless', 'FirefoxHeadless'];
	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 plugins we want to load
		plugins: [
			'karma-jasmine',
			'karma-webpack',
			'karma-chrome-launcher',
			'karma-firefox-launcher',
			'karma-safari-launcher',
		],
		// list of files / patterns to load in the browser
		files: ['**/*.spec.ts'],
		// list of files / patterns to exclude
		exclude: ['node_modules'],
		// preprocess matching files before serving them to the browser
		// available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
		preprocessors: {
			'**/*.ts': ['webpack'],
		},
		// webpack config
		webpack: {
			mode: 'development',
			module: {
				rules: [
					{
						test: /\.ts$/,
						loader: 'ts-loader',
						options: {
							transpileOnly: true,
						},
					},
					{
						test: /\.html?$/,
						loader: 'html-loader',
					},
					{
						test: /\.scss$/,
						use: [
							'style-loader',
							'css-loader',
							'postcss-loader',
							'sass-loader',
						],
					},
					{
						test: /\.svg?$/,
						loader: 'raw-loader',
					},
				],
			},
			resolve: {
				extensions: ['.ts', '.js'],
			},
		},
		// test results reporter to use
		// possible values: "dots", "progress"
		// available reporters: https://npmjs.org/browse/keyword/karma-reporter
		reporters: ['progress'],
		// 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: !process.env.CI,
		// start these browsers
		// available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
		browsers,
		browserConsoleLogOptions: {
			terminal: true,
			level: 'warn',
		},
		customLaunchers: {
			FirefoxHeadless: {
				base: 'Firefox',
				flags: ['-headless'],
			},
			ChromeNoSandbox: {
				base: 'ChromeHeadless',
				flags: ['--no-sandbox'],
			},
		},
		// Continuous Integration mode
		// if true, Karma captures browsers, runs the tests and exits
		singleRun: !!process.env.CI,
		// Concurrency level
		// how many browser should be started simultaneous
		concurrency: Infinity,
	});
};