Parrot is a set of tools that allow you to create HTTP mocks and organize them into scenarios in order to develop your app against different sets of data. We have implemented all of Parrot's functionality in JavaScript, but scenarios are a general specification that can be implemented in any language.

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Let's walk through a common development workflow using Parrot.

import { describe, it, get, post, graphql } from 'parrot-friendly';
import casual from 'casual'; // for generating fake data
import schema from './schema'; // our GraphQL schema

const scenarios = describe('Ship Log', () => {
  it('has a ship log', () => {
    // respond with a mock JSON file and add a delay
    get('/ship_log')
      .response(require('./mocks/shipLog.json'))
      .delay(1200);

    // respond with the request body that was sent
    post('/ship_log').response(req => req.body);
  });

  it('has a random ship log', () => {
    // respond with random data generated by casual
    get('/ship_log').response(() => [
      {
        port: casual.city,
        captain: casual.full_name,
      },
    ]);
  });

  it('has a server error', () => {
    // respond with a 500 status
    get('/ship_log').status(500);
  });

  it('has a ship log from GraphQL', () => {
    // respond to GraphQL queries
    graphql('/graphql', schema, () => ({
      ShipLog: () => require('./mocks/shipLog.json'),
    }));
  });
});

export default scenarios;

More information about writing scenarios can be found in the scenarios documentation.

import express from 'express';
import parrot from 'parrot-middleware';
import scenarios from './scenarios';

const app = express();
app.use(parrot(scenarios));
app.listen(3000);

Fetch current scenario.

$ curl 'http://localhost:3002/parrot/scenario'

Fetch all scenarios.

$ curl 'http://localhost:3002/parrot/scenarios'

Setting parrot to a new scenario.

$ curl -X POST -H "Content-Type: application/json" -d '{ "scenario": "[scenario name here]" }'  'http://localhost:3002/parrot/scenario'

Parrot is divided into several packages that can be used together depending on your use case.

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