Kodokojo-mocks NPM

Kodokojo-mocks is an initiative from Kodokojo project

Standalone mocking server using Restify

Install

npm install kodokojo-mocks --save-dev

npm install -g kodokojo-mocks

Then create a folder to store your mock files

e.g: {your_project_path}/mocks

Create a config file

e.g: {your_project_path}/mocks_config.json

Config file example :

{
  "port":8075,
  "logs":false,
  "prefix": "api/v1",
  "path": "test/test_mocks",
  "routes":[
    {"path":"/user","method":"POST","mockType":"raw","serve":"0821b5c16a367e5df4044b183af3f0d18235d832"},
    {"path":"/user/:id","method":"GET","mockType":"file","serve":"user.get.json"},
    {"path":"/user","method":"PATCH","mockType":"func","serve":"user.patch.js"},
    {"path":"/auth/:token","method":"GET","mockType":"func","serve":"auth.get.js"},
    {"path":"/visits","method":"GET","mockType":"func","serve":"visits.get.js"}
  ],
  "memoryStorage": false,
  "persistStorage": true
}

port (default: 8080) : Bind server to the specified port (eg: 8080) logs (default: true) : Enable request and error logging prefix (default: "") : Prefix path (eg: http://localhost:8080 /api/v1/...) path (default: "") : Relative path to mocks folder (from your project root folder, where your package.json was created) routes (default: []) : An array containing the routes you want to mock. ExpressJs format for parameters and paths memoryStorage (default: false) : Use memory only storage persistStorage (default: false) : Previous storage file is used if memoryStorage is false else create a new empty storage file

Usage

Inside your module

Start

var MockServer = require('kodokojo-mocks');

var mockServer = new MockServer(__dirname+"/mocks_config.json");
mockServer.start().then(function(state){
  console.log(state); // Should display : { ready: true }
  console.log(server.config); // you can access to parsed configuration
});

Stop

// ... Server should be started
mockServer.stop();

CLI

Npm script

To run as a npm script. Add the CLI in your package.json replace {config_file_path} by your config file path.

{ ...
  "scripts": {
    "mockserver": "./node_modules/kodokojo-mocks/bin/mockserver.js {config_file_path}"
  }
... }

Global installation

npm install -g kodokojo-mocks

Usage

replace {config_file_path} by your config file path.

mockserver {config_file_path}

Have a look at ./test/index.js to see some examples.

Create your mocks

There is 3 ways to serve a mock : as you can see in the config file above, every mock have a type ("mockType" property) so you can define how the mock will be loaded.

Raw data

Return the value that you specified in your config file ("serve" property)

{... "mockType":"raw","serve":"[value_to_serve]"}

Json file content

Return the content of the given json file

{... "mockType":"file","serve":"[file_name]"}

The mock file should be a standard json file. You can write data from the incoming request content inside your json file by using mustach syntax, eg :

{ ...
  "identifier": "{{req.id}}",
  ... }

ExpressJs controller

You can use a classic ExpressJs controller to serve your data, it's allow you to write some custom/business logic as a mock, eg :

{... "mockType":"func","serve":"[file_name]"}

Controller example:

exports.controller = function(req, res, next, server) {
  // Your code here ...
  // Classic ExpressJs api below
  res.contentType = "application/json";
  res.send(200, data_to_serve);
  next();
};

Persistence

A file based (in-memory if memoryStorage is true) key-value store is exposed as server.store that can be used to store and retrieve data in a custom controller.

exports.controller = function(req, res, next, server) {
  store.get('visits', function (err, value) {
    // visits = 0
    store.put('visits', value+1, function (err) {
        // visits = 1
    });
  });

  res.contentType = "application/json";
  res.send(200, data_to_serve);
  next();
};