A simple mock router implementation

mock-router.js

// The MIT License (MIT)

// Copyright (c) 2015 Christian Hoffmeister

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
import Bluebird from 'bluebird';

export default class MockRouter {
  static matchUrl(pattern, url) {
    const variableNames = [];
    const regexTransformed = pattern.replace(/\{([^\}]+)\}/g, (_, variableName) => {
      variableNames.push(variableName);
      return '([^\\/]+)';
    });
    const regex = new RegExp('^' + regexTransformed + '$');
    const match = url.match(regex);

    if (match) {
      return variableNames.reduce((vals, vn, i) => {
        vals[vn] = match[i + 1];
        return vals;
      }, {});
    } else {
      return null;
    }
  }

  constructor() {
    this.routes = [];
    this.addRoute = this.addRoute.bind(this);
    this.handle = this.handle.bind(this);
  }

  addRoute(method, pattern, callback) {
    this.routes.push({
      method: method,
      pattern: pattern,
      callback: callback
    });
  }

  handle(method, url, payload) {
    for (let i = 0, l = this.routes.length; i < l; i++) {
      if (this.routes[i].method === method) {
        const values = MockRouter.matchUrl(this.routes[i].pattern, url);
        if (values) {
          const result = this.routes[i].callback(values, payload);
          return result instanceof Error
            ? Bluebird.delay(1000).then(() => Bluebird.reject(result))
            : Bluebird.delay(1000).return(result);
        }
      }
    }

    return Bluebird.delay(1000).then(() => Bluebird.reject(new Error(`Could not match "${method} ${url}"`)));
  }
}

// configure router
var router = new MockRouter();
router.addRoute('GET', '/test/{foo}', (values) => {
  return {
    test: values.foo
  };
});
router.addRoute('POST', '/test2/{foo}', (values, payload) => {
  return {
    test1: foo,
    test2: payload.name
  };
});

// test router
console.log(router.handle('GET', '/test/apple')); // { test: "apple" }
console.log(router.handle('POST', '/test/apple')); // null
console.log(router.handle('GET', '/test2/apple')); // null
console.log(router.handle('POST', '/test2/apple', { name: 'pie' })); // { test2: "pie" }

Do we use that? Can we not go directly to the epagesJ-API?