using assets from gems with karma-sprockets

gistfile1.js

fs = require('fs');
path = require('path');
glob = require('/home/ironic/.nvm/v0.11.14/lib/node_modules/glob');
util = require('util');

path.deepdir = function (_path, count) {
    var result = _path;
    for (var i = 0; i < count; i++)
        result = path.dirname(result);
    return result;
};

module.exports = function (config) {

    var rubyGemsPath = '/home/ironic/.rvm/gems/ruby-2.1.0/gems';

    var folders = ['app/assets/javascripts', 'lib/assets/javascripts', 'vendor/assets/javascripts'];
    var paths = [];

    var engineLocations = [
        { path: 'lib/*/rails/engine.rb', deep: 4},
        {path: 'lib/turbolinks.rb', deep: 2}
    ];

    engineLocations.forEach(function(engine){
        var search = path.join(rubyGemsPath, '*/' + engine.path);

        console.log('searching for: '+ search);

        var files = glob.sync(search);
        files.forEach(function (file) {

            var folder = path.deepdir(file, engine.deep);
            console.log('file: '+ file);
            console.log('folder: '+ folder);

            var gemFolders = folders.map(function (item) {
                return path.join(folder, item)
            });
            gemFolders = gemFolders.filter(function (folder) {
                return fs.existsSync(folder);
            });
            paths = paths.concat(gemFolders);
        });

    });

    paths.forEach(function (dir) {
        console.log(dir);
    });

    var included = function (file) {
        return {pattern: file, included: true};
    };

    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', 'sprockets'],

        sprocketsPath: paths.concat([
            'vendor/assets/javascripts',
            'app/assets/javascripts'
        ]),

        sprocketsBundles: [
            'application.js.coffee'
        ],


        // list of files / patterns to load in the browser
        files: [
            included('app/assets/javascripts/**/*.coffee'),
            included('spec/javascripts/**/*helper.coffee'),
            'spec/javascripts/**/*_spec.coffee'
        ],


        // 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: {
            '**/*.coffee': ['coffee']
        },

        coffeePreprocessor: {
            options: { bare: true, sourceMap: true
            }
        },

        // 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: true,


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


        // Continuous Integration mode
        // if true, Karma captures browsers, runs the tests and exits
        singleRun: false
    });
};