jordihereu / string-calculator-kata

🥋⛩️ string-calculator-kata

1. Create a simple String calculator with a method int Add(string numbers)

• The method can take 0, 1 or 2 numbers, and will return their sum (for an empty string it will return 0) for example “” or “1” or “1,2”
• Start with the simplest test case of an empty string and move to 1 and two numbers

2. Allow the Add method to handle an unknown amount of numbers

3. Allow the Add method to handle new lines between numbers (instead of commas)

• the following input is ok: 1 2,3 (will equal 6)
• the following input is NOT ok: 1, (not need to prove it - just clarifying)

4. Support different delimiters

• to change a delimiter, the beginning of the string will contain a separate line that looks like this: //[delimiter] [numbers…] for example //; 1;2 should return three where the default delimiter is ;
• the first line is optional. All existing scenarios should still be supported

5. Calling Add with a negative number will throw an exception negatives not allowed - and the negative that was passed. If there are multiple negatives, show all of them in the exception message

6. Numbers bigger than 1000 should be ignored, so adding 2 + 1001 = 2

7. Delimiters can be of any length with the following format: “//[delimiter]\n” for example: “//[]\n12***3” should return 6

8. Allow multiple delimiters like this: “//[delim1][delim2]\n” for example “//[][%]\n12%3” should return 6.

9. make sure you can also handle multiple delimiters with length longer than one char

Usage

Run the tests with:

• npm run test:once => if you want ro run the tests only once
• npm run test:watch => if you want ro keep test refreshing as you code

Directories:

|--src
   |---index.js
|--test
   |---index.test.js
|--package.json
|--README.md

This project was bootstrapped with kataclism.

Read the rest of the documentation here.