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https://github.com/lalitmee/roman-numeral-calculator
Roman Numeral Calculator with unit testing
https://github.com/lalitmee/roman-numeral-calculator
chai javascript mocha
Last synced: 4 days ago
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Roman Numeral Calculator with unit testing
- Host: GitHub
- URL: https://github.com/lalitmee/roman-numeral-calculator
- Owner: lalitmee
- Created: 2017-11-23T18:53:12.000Z (about 7 years ago)
- Default Branch: master
- Last Pushed: 2017-11-24T17:47:26.000Z (about 7 years ago)
- Last Synced: 2024-11-07T19:51:21.674Z (about 2 months ago)
- Topics: chai, javascript, mocha
- Language: JavaScript
- Homepage:
- Size: 907 KB
- Stars: 0
- Watchers: 0
- Forks: 0
- Open Issues: 0
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Metadata Files:
- Readme: README.md
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README
# Roman-Numeral-Calculator
- - - -
## Introduction ##
This repository is for a program of **_Roman Numeral Calculator_** with unit testing of all **_mathematical operations_** like addition, subtraction, multiplication and division. **_Unit testing_** is done by using [mocha](https://mochajs.org/) and [chai](http://chaijs.com/).
## Problem ##
The problem was to do mathematical operation with roman numerals (I, V, X, L....). .. For example , it should be able to do the operations like these.
XL + X = L
C - I = XCIX
C / X = X
X * X = C
The program should take 3 arguments like the above and give the result( two operands and the operator and perform the operation and print the output ). There should be a unit test for the program (using any unit testing framework).
## Approach ##
As described in the problem statement that we are dealing with our __input__ and output as __Roman Numerals__. So first I tried to convert roman numerals to integer so that I can perform mathematical operations on the inputs.
For converting roman to integer, I have created a function __convertRomanToInt__ in [index.js](https://github.com/lalitmee/Roman-Numeral-Calculator/blob/master/index.js) file and for converting integer to roman, I have created a funtion __convertIntToRoman__ in the same file. Then I have made separate functions __add__, __subtract__, __divide__ and __multiply__ for _addition_, _subtraction_, _division_ and _multiplication_ respectively.
For different operations, I am taking user input in the form of (num1 + num2). User will enter the input in this form and will get the respective output.
## Software Requirements ##
To run this program we are required to have __nodejs__, __mocha__ and __chai__. To execute the roman numeral calculator, we need to install these softwares.
1. For _nodejs_ on **ubuntu**:
- `sudo apt-get update`
- `sudo apt-get install nodejs`
- `sudo apt-get install npm`
2. For _mocha_ and _chai_:
- `sudo npm install mocha chai --save-dev`
## Execution ##
To successfully run this program you have to follow some terminal commands after installing the above softwares on your system which are following:
1. Clone the repository and go to the folder Roman-Numeral-Calculator.
- `git clone https://github.com/lalitmee/Roman-Numeral-Calculator.git`
- `cd Roman-Numeral-Calculator`
2. For program execution.
- `node index.js`
- after this command program will run you can give output in the form of (num1 - num2).
3. For unit testing.
- `npm run test`
- after this command, test cases successfully execution will be displayed.
==============================================================================================
## Thank You