Loading fixtures (mocks) in karma-mocha-chai

fixtures.md

#Just follow this guide and install needed packages https://www.npmjs.com/package/karma-fixture

karma.conf.js

var webpack = require('webpack');

module.exports = function(config) {
  config.set({

    browsers: ['PhantomJS'],

    singleRun: !!process.env.CI,

    frameworks: [ 'mocha', 'fixture' ],

    files: [
      './node_modules/phantomjs-polyfill/bind-polyfill.js',
      'tests.webpack.js',
      {
        pattern: 'fixtures/*',
        watched: true,
        served: true,
        included: true
      }
    ],

    preprocessors: {
      'tests.webpack.js': [ 'webpack', 'sourcemap' ],
      //configure Karma to load all html
      //and JSON fixture files via those preprocessors:
      '**/*.html'   : ['html2js'],
      '**/*.json'   : ['json_fixtures']
    },

    jsonFixturesPreprocessor: {
      //setup the karma-json-fixtures-preprocessor plugin
      variableName: '__json__'
    },

    reporters: [ 'mocha' ],

    plugins: [
      require('karma-webpack'),
      require('karma-mocha'),
      require('karma-mocha-reporter'),
      require('karma-phantomjs-launcher'),
      require('karma-sourcemap-loader'),
      require('karma-fixture'),
      require('karma-html2js-preprocessor'),
      require('karma-json-fixtures-preprocessor'),
    ],

    webpack: {
      devtool: 'inline-source-map',
      module: {
        loaders: [
          { test: /\.(jpe?g|png|gif|svg)$/, loader: 'url', query: {limit: 10240} },
          { test: /\.js$/, exclude: /node_modules/, loaders: ['babel']},
          { test: /\.json$/, loader: 'json-loader' },
          { test: /\.less$/, loader: 'style!css!less' },
          { test: /\.scss$/, loader: 'style!css?modules&importLoaders=2&sourceMap&localIdentName=[local]___[hash:base64:5]!autoprefixer?browsers=last 2 version!sass?outputStyle=expanded&sourceMap' }
        ]
      },
      resolve: {
        modulesDirectories: [
          'src',
          'node_modules'
        ],
        extensions: ['', '.json', '.js']
      },
      plugins: [
        new webpack.IgnorePlugin(/\.json$/),
        new webpack.NoErrorsPlugin(),
        new webpack.DefinePlugin({
          __CLIENT__: true,
          __SERVER__: false,
          __DEVELOPMENT__: true,
          __DEVTOOLS__: false  // <-------- DISABLE redux-devtools HERE
        })
      ]
    },

    webpackServer: {
      noInfo: true
    }

  });
};

test.js

import VowlParser from '../VowlParser';
import {expect} from 'chai';

describe('parseVowl', () => {
  before(() => {
    fixture.setBase('fixtures');
  });

  beforeEach(function(){
    this.result = fixture.load('example.json');
  });

  afterEach(() => {
    fixture.cleanup();
  });

  it('gets nodes from vowl file', () => {
    let res = fixture.load('example.json');
    //console.log(res);
    const parser = new VowlParser();
    const nodes = parser.getNodes(res);
    expect(nodes).to.deep.equal({});
  });
});