Exercism

Instructions

Test suite

Solution

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).

For installation and learning resources, refer to the Ruby resources page.

For running the tests provided, you will need the Minitest gem. Open a terminal window and run the following command to install minitest:

gem install minitest

If you would like color output, you can require 'minitest/pride' in the test file, or note the alternative instruction, below, for running the test file.

Run the tests from the exercise directory using the following command:

ruby acronym_test.rb

To include color from the command line:

ruby -r minitest/pride acronym_test.rb

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_test.rb

require 'minitest/autorun'
require_relative 'acronym'

# Common test data version: 1.5.0 787d24e
class AcronymTest < Minitest::Test
  def test_basic
    # skip
    assert_equal "PNG", Acronym.abbreviate('Portable Network Graphics')
  end

  def test_lowercase_words
    skip
    assert_equal "ROR", Acronym.abbreviate('Ruby on Rails')
  end

  def test_punctuation
    skip
    assert_equal "FIFO", Acronym.abbreviate('First In, First Out')
  end

  def test_all_caps_word
    skip
    assert_equal "GIMP", Acronym.abbreviate('GNU Image Manipulation Program')
  end

  def test_punctuation_without_whitespace
    skip
    assert_equal "CMOS", Acronym.abbreviate('Complementary metal-oxide semiconductor')
  end

  def test_very_long_abbreviation
    skip
    assert_equal "ROTFLSHTMDCOALM", Acronym.abbreviate('Rolling On The Floor Laughing So Hard That My Dogs Came Over And Licked Me')
  end

  def test_consecutive_delimiters
    skip
    assert_equal "SIMUFTA", Acronym.abbreviate('Something - I made up from thin air')
  end
end

class Acronym
  def self.abbreviate(input)
    new(input).abbreviate
  end

  def initialize(input)
    @input = input
  end

  def abbreviate
    first_letters.join.upcase
  end

  def first_letters
    input.scan(/\b\w/)
  end

  private

  attr_reader :input
end

What can you learn from this solution?

A huge amount can be learnt from reading other people’s code. This is why we wanted to give exercism users the option of making their solutions public.

Here are some questions to help you reflect on this solution and learn the most from it.

What compromises have been made?
Are there new concepts here that I could read more about to develop my understanding?

PatrickMcSweeny's solution

to Acronym in the Ruby Track

Source

Submitting Incomplete Solutions

acronym_test.rb

What can you learn from this solution?