koa-mock

Web page mock middleware.

Features

• Simple url and mock file mapping rules.
• Support *.js, *.json and common datas.
• Auto find all scenes and easy change it

URL Mapping Rules

Use ?__scene[={scene}] to select mock scene, default scene is default.

Rules

{url}?__scene={scene} => {datadir}{url}/{scene}.js

Installation

$ npm install koa-mock

Quick start

Using nunjucks template engine for example:

• NOTICE You must implement ctx.render(ctx, view, data) generator function first.
• Use __scene[={scene}] querystring to enable mock and select one mock scene.

app.js

const path = require('path');
const nunjucks = require('nunjucks');
const Koa = require('koa');
const mock = require('koa-mock');

const app = new Koa();
app.use(mock({
  datadir: path.join(__dirname, 'mocks')
}));

nunjucks.configure(path.join(__dirname, 'views'));

app.context.render = async function(ctx, view, data) {
  ctx.body = nunjucks.render(view, data);
};

app.listen(1984);

/mocks files

• /mocks
  • default.js => {name: 'fengmk2', __view: 'home.html'}
  • /users
    • /1
      • default.js => {name: 'default-user', __view: 'profile.html'}
      • fengmk2.js => {name: 'fengmk2', __view: 'profile.html'}

/views files

• /views
  • home.html => <p>welcome home, {{name}}</p>
  • profile.html => <p>profile, {{name}}</p>

Request the mock web page

$ curl http://localhost:1984/?__scene

Status: 200
<p>welcome home, fengmk2</p>

$ curl http://localhost:1984/users/1?__scene=default

Status: 200
<p>profile, default-user</p>

$ curl http://localhost:1984/users/1?__scene=fengmk2

Status: 200
<p>profile, fengmk2</p>

$ curl http://localhost:1984/

Status: 404
Not Found

License

MIT