Avatar of matheussilvasantos

matheussilvasantos's solution

to Two Fer in the Ruby Track

Published at Aug 12 2018 · 0 comments
Instructions
Test suite
Solution

Note:

This exercise has changed since this solution was written.

Two-fer or 2-fer is short for two for one. One for you and one for me.

"One for X, one for me."

When X is a name or "you".

If the given name is "Alice", the result should be "One for Alice, one for me." If no name is given, the result should be "One for you, one for me."


For installation and learning resources, refer to the exercism help 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 two_fer_test.rb

To include color from the command line:

ruby -r minitest/pride two_fer_test.rb

Source

This is an exercise to introduce users to basic programming constructs, just after Hello World. https://en.wikipedia.org/wiki/Two-fer

Submitting Incomplete Solutions

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

two_fer_test.rb

require 'minitest/autorun'
require_relative 'two_fer'

# Common test data version: 1.1.0 c080bdf
class TwoFerTest < Minitest::Test
  def test_no_name_given
    # skip
    assert_equal "One for you, one for me.", TwoFer.two_fer
  end

  def test_a_name_given
    skip
    assert_equal "One for Alice, one for me.", TwoFer.two_fer("Alice")
  end

  def test_another_name_given
    skip
    assert_equal "One for Bob, one for me.", TwoFer.two_fer("Bob")
  end

  # Problems in exercism evolve over time, as we find better ways to ask
  # questions.
  # The version number refers to the version of the problem you solved,
  # not your solution.
  #
  # Define a constant named VERSION inside of the top level BookKeeping
  # module, which may be placed near the end of your file.
  #
  # In your file, it will look like this:
  #
  # module BookKeeping
  #   VERSION = 1 # Where the version number matches the one in the test.
  # end
  #
  # If you are curious, read more about constants on RubyDoc:
  # http://ruby-doc.org/docs/ruby-doc-bundle/UsersGuide/rg/constants.html

  def test_bookkeeping
    skip
    assert_equal 1, BookKeeping::VERSION
  end
end
class TwoFer
  def self.two_fer(name = "you")
    "One for #{name}, one for me."
  end
end

module BookKeeping
  VERSION = 1
end

Community comments

Find this solution interesting? Ask the author a question to learn more.

What can you learn from this solution?

A huge amount can be learned 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 you could read more about to improve your understanding?