mockabilly

Mockabilly

Mockabilly is a template-driven mock data generator.

It was built to be used with complete mock libraries that expect developers to define or extend models for generating mock data.

Installation

• From npm:

npm install --save-dev mockabilly

How does it work?

Mockabilly uses a keyword library that generates mock data in the JSON object you are expecting. For example, assuming you have a Student model in your project and you want to mock it out, you might have the following in your mocks folder:

student.json

{
    "id": "NumbersOne",
    "name": "WordsTwo",
    "email": "Email",
    "bio": "SentencesFive",
    "City": "WordsTwo",
    "State": "WordsOne",
    "Birthday": "Date"
}

Mockabilly will recognize the values you are using and generate the mock data for you. Below are the current options:

Value	Output
Words[One, Two... Five]	creates up to five words
Sentences[One, Two... Five]	creates up to five sentences
Numbers[One, Two... Nine]	creates up to nine digit numbers
Guid	creates a random guid
Email	creates a random email
TimestampUtc	creates a UTC timestamp
Date	creates a date
Boolean	returns true or false
options: (e.g. "cat||dog||mouse")	returns one of the options (e.g. "cat")

Tell mockabilly about your template

You have defined your student.json template, but how will mockabilly know where it is? Inside of your configuration file, export a mockTemplates object. Let's add student:

config.js

const teacher = require('./tests/mocks/teacher.json');
const student = require('./tests/mocks/student.json');

module.exports = {
    mockTemplates: {
        teacher,
        student,
    },
};

Great. We now have a model producing mock data and a way of locating it, how do we use it? In the below example, we are using the power of mockabilly to define our mock data in the powerful MirageJS mocking framework.

import { Server, Model, Factory, Response } from 'miragejs';
import { buildMock } from 'mockabilly';
import config from '../config';

export function makeServer({ environment = 'development' } = {}) {
    let server = new Server({
        environment,
        models: {
            teacher: Model,
            student: Model
        },
        routes() { ... },
        factories: {
            student: Factory.extend(
                buildMock(config.mockTemplates['student'])),
            teacher: Factory.extend(
                buildMock(config.mockTemplates['teacher'])
            ),
        },
        seeds(server) {
            server.createList('student', 10);
            server.createList('teacher', 10);
        }
    });
});

Please feel free to reach out and let me know what you think.