generator-karma-gulp-browserify/generators/app/templates/gulp/tasks/unit.js

A generator for a fast ES6 Karma test harness

const config = require('../config');
const path = require('path');
const gulp = require('gulp');
const Server = require('karma').Server;

gulp.task('unit', () => {
  new Server({
    configFile: path.resolve(__dirname, '../..', config.test.karma),
    singleRun: true
  }).start();
});