React App - Non-repeating random number

Assumptions:

• Generate Non-repeating random number within 1 (inclusive) to 5000 (inclusive)

Design

It is divided into 4 parts.

• Components : Contains modular react components. (RandomNumber) RandomNumber uses RandomNumberGenerator util to generate random number at a regular interval for a given period and showcase using NumberView reusable component.

• Containers : Contains Page level react components which holds different components at a page level. (HomeScreen) HomeScreen holds RandomNumber as a child component.

• Reusable : Reusable react components (NumberView). NumberView just renders the given number as a props with some optional animation.

• utils : Utility classes like RandomNumberGenerator which generates non repeating random numbers within given range inclusive of both bound limit.

Usage

Static Type Checker Dependency (node modules)

• flow

Build/Compile Dependency

• react-scripts
• yarn

Test Dependency (node modules)

• jest

In order to use this program, you need to add jest for testing purpose.

How to run?

Steps:
* cd to the directory (contains package.json)
* execute yarn install (if not done)
* execute yarn build
* execute yarn start

This will start a development server (using webpack).

Once you've started the development server, navigate to http://localhost:3000/ to get started and view number appears in non-repeating random order.

How to run test suit?

Steps:
* cd to the directory (contains package.json)
* execute yarn install (if not done)
* execute yarn build (if not done)
* execute yarn test
* 

Test Suite contains 4 different test cases.

It should print :-

Test Suites: 3 passed, 3 total 
Tests:       4 passed, 4 total 
Snapshots:   0 total
Time:        1.783s
Ran all test suites.

Contact details

if you have trouble running it you can get in touch with me on my email id.

email id: abhishek1.dhn@gmail.com

Name: Abhishek Kumar