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MBTI Perspective Test

This is a small web application written in ES6 with Node.js and React, serving a simplified version of a Myers-Briggs Type Indicator (MBTI) personality test.

The landing page displays a list of statements, each of which can be ranked on a scale from 1 to 7 by selecting the corresponding radio button, from left to right, respectively. A selection of 1 means that the user disagrees strongly with that statement. If the user ranks a 7, that means they agree strongly with that statement. A value of 4 means their answer is neutral.

Once the user ranks all presented statements and provides a valid email address, their answers are sent to the backend and they are directed to their results page. The results page shows the user's Myers-Briggs type together with a simple chart indicating where they lean on each of the 4 MBTI dimensions.

The backend API accepts a POST request with the user's answers and email address and persists this data to a MySQL database. The database stores all test questions (i.e. statements) and their association with the MBTI dimensions. This information is used to compute the user's test scores and infer their Myers-Briggs type, which are subsequently passed on to the frontend.

Backend endpoints:

GET   /                           - Lists all available endpoints
GET   /questions                  – Lists all test questions (/statements)
GET   /users                      – Lists all users
GET   /users/findOne?{id}{email}  – Finds a user by their id or email
POST  /users                      – Creates a new (or updates an existing) user with the email provided in the request body

Frameworks and libraries

  • Express
  • Sequelize
  • React
  • Bootstrap
  • Recharts

Setting up and running the application locally

  1. Make sure you have Node.js v10.0+ and NPM v6.0+ installed in your development environment.
  2. Make sure you have MySQL Server v5.7+ installed and running.
  3. Open the mbti-backend and mbti-frontend projects in your IDE and run npm install on both.
  4. Open mbti-backend/config.json and adjust your MySQL connection settings as necessary.
  5. Start the backend server by running npm start in the backend project directory.
  6. Launch the client application by running npm start in the frontend project directory.

Notes

  • The backend creates the database automatically at first run, so no DDL needs to be executed manually.
  • To ensure data integrity, the test questions are not defined on the client side but fetched from the backend.