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to Acronym in the JavaScript Track

Published at Aug 19 2018 · 0 comments
Instructions
Test suite
Solution

Note:

This exercise has changed since this solution was written.

Convert a phrase to its acronym.

Techies love their TLA (Three Letter Acronyms)!

Help generate some jargon by writing a program that converts a long name like Portable Network Graphics to its acronym (PNG).

Setup

Go through the setup instructions for JavaScript to install the necessary dependencies:

http://exercism.io/languages/javascript/installation

Running the test suite

The provided test suite uses Jasmine. You can install it by opening a terminal window and running the following command:

npm install -g jasmine

Run the test suite from the exercise directory with:

jasmine acronym.spec.js

In many test suites all but the first test have been marked "pending". Once you get a test passing, activate the next one by changing xit to it.

Source

Julien Vanier https://github.com/monkbroc

Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.

acronym.spec.js

var Acronyms = require('./acronym');

describe('Acronyms are produced from', function () {
  it('title cased phrases', function () {
    expect(Acronyms.parse('Portable Network Graphics')).toEqual('PNG');
  });

  it('other title cased phrases', function () {
    expect(Acronyms.parse('Ruby on Rails')).toEqual('ROR');
  });

  it('inconsistently cased phrases', function () {
    expect(Acronyms.parse('HyperText Markup Language')).toEqual('HTML');
  });

  it('phrases with punctuation', function () {
    expect(Acronyms.parse('First In, First Out')).toEqual('FIFO');
  });

  it('other phrases with punctuation', function () {
    expect(Acronyms.parse('PHP: Hypertext Preprocessor')).toEqual('PHP');
  });

  it('phrases with punctuation and sentence casing', function () {
    expect(Acronyms.parse('Complementary metal-oxide semiconductor')).toEqual('CMOS');
  });
});
class Acronyms {
  static parse(phrase) {
    phrase = phrase.replace(/([a-z])([A-Z])/g, "$1 $2");
    let words = phrase.split(/\W+/);
    return(words.reduce((acronym,word)=>
			acronym+=word.split('').shift(),'').toUpperCase());
  }
}
module.exports=Acronyms;

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