How to generate test data using JSON Server and Mockeroo for Graphql application

Objective

Learn how to generate random JSON data to test your Graphql scheme using JSON server and Mockaroo.

Prerequisites

• NodeJs installed
• expecting you to have intermediate knowledge of Javascript
• Terminal (any will do, preferably bash-based)
• A text editor (any will do)

Let’s get started

Create a project directory for the app.

mkdir simple_node_graphql_app && cd simple_node_graphql_app

install the local npm dependencies we require

npm install --save axios express express-graphql graphql nodemon

install global npm dependencies (read all about json-server)

npm install -g json-server

Generating test json data with Mockaroo

Step 1

Step 2

create a db.json file

update the db.json file with the data generated or download from mockaroo from step one.

Now let’s start our servers and see how far our applications are doing.

npm run dev

npm run js-server

Now we test the graphql query in our browser

Click here to clone and run the above app yourself.

I would love to hear your feedback and thoughts, also feel free to relate any issues you have.

How to thank me?

• give this article a clap
• follow me on twitter
• tweet, share this lesson with 3 friends
• star the project on github

Hope you’ll find this useful! Thanks