README.md

String Calculator

This project is a basic Node.js application set up with Jest as the testing framework. Follow the steps below to set up your project and configure Jest for testing.

Step by Step Process Followed

1. Created a New Directory

mkdir string-calculator
cd string-calculator

2. Initialized a New Node.js Project

npm init -y

3. Installed Jest as a development dependency:

npm install --save-dev jest

4. Configured Jest

Updated the package.json file to configure Jest as testing framework. Added following to the "scripts" section.

"scripts": {
  "test": "jest"
}

This will help us run script with npm test or npm run test.

5. Created .gitignore

I generated a .gitignore file using the gitignore package to ensure that unnecessary files are excluded from version control like github/gitlab. This helps keep the repository clean by avoiding the inclusion of files such as node_modules and environment configurations. To create the .gitignore file, I used the following command:

npx gitignore node

6. Test Cases and Starting method

I wrote comprehensive test cases for the project and included a method to facilitate starting the tests. After executing the npm test command, the output indicates that all the tests are currently failing.

You can review the output from the test run in the image below:

First Test Pass Implementation After implementing the solution for the first test case, it passed successfully while the remaining tests are still failing. We will now focus on addressing the second test case.

Below is the output showing that the first test case has passed:

Second Test Pass Implementation Below is the output showing that the second test case has passed:

Third Test Pass Implementation Below is the output showing that the third and 4th test case has passed, after the implementation:

5th Test Pass Implementation Below is the output showing that the 5th test case has passed, after the implementation of regex based split:

6th Test Pass Implementation Below is the output showing that the 6th test case has passed, after the implementation of delimeter as variable:

All Test Passing :D Below is the output showing that all the test cases has passed, after the implementation for negatives: