cb-mock-server

The mock-server is able to serve the contents of two distinct directories:

• static: contains static files and sub-folders that are returned directly and are separated by http request methods (GET, POST, ...)
• dynamic: contains java script files that are executed

File in the static directory MAY have a .json extension. Files in the dynamic directory have a .js extensions.

Considering the following directory structure:

/static/
  GET/
    files/
      test.jpg
      README
    users/
      index.json
      234.json
  POST/
    users/
      234.json
/dynamic/
  users/
    567.js
  groups/
    index.js
  misc/
    readme.txt.js

• GET /users/ will return the /static/users/index.json file
• GET /files/test.jpg will return the /static/GET/files/test.jpg file
• GET /files/README will return the /static/GET/files/README file
• GET /users/234 will return the /static/GET/users/234.json file
• POST /users/234 will return the /static/POST/users/234.json file
• POST /users/567 will execute the /dynamic/users/567.js script
• GET /users/567 will execute the /dynamic/users/567.js script
• DELETE /groups will execute the /dynamic/groups/index.js script
• GET /misc/readme.txt will execute the /dynamic/misc/readme.txt.js script

Example scripts

Scripts must export a handle function that takes two parameters, a request and a response parameter.

exports.handle = function (req, res) {
  var password = req.body;

  if (password !== 'secret') {
    res.status(403).send('wrong password');
  } else {
    res.send({result: 'ok'});
  }
};

Install and setup

yarn add cb-mock-server

In package.json add e.g.

"scripts": {
  "mock:serve": "cb-mock-server --dynamic=mocks/dynamic --static=mocks/static --port=3000"
}

The mock server accepts the following parameters:

• --dynamic=: relative path to directory with dynamic scripts
• --static=: relative path to directory with static files
• --port=: server port (default is 3000)

Watch & Reload

If a script is changed (and was already used by the server), the server must be restarted. This can be automated with nodemon.

First install nodemon:

yarn add nodemon

Then change the start script in package.json to e.g.:

"mock:serve": "nodemon --watch mocks/dynamic --exec cb-mock-server --dynamic=mocks/dynamic --static=mocks/static --port=3000"

Use cases

Return a different http code than 200

Create a .js script and specify the response code.