Paragraph Truncator

app.rb

require_relative "paragraph_truncator.rb"

puts "<inspirational paragraph prompt here>:"
words = gets.chomp

puts "How many characters should be in that lovely paragraph of yours?"
number = gets.to_i

puts "What would you like to see at the end of your truncated paragraph?"
puts "(Ex: Read More, See More, ..., etc.)"
end_of_paragraph = gets.chomp

paragraph = ParagraphTruncator.new(words, number, end_of_paragraph)

puts paragraph.truncator(words, number, end_of_paragraph)

paragraph_truncator.rb

# build a paragraph truncator class

class ParagraphTruncator
  attr_accessor :words, :number_of_characters, :last_characters
  
  # initializes instance of ParagraphTruncator class
  #
  # words - string containing some user-provided paragraph
  # number_of_characters - integer number of maximum characters
  # last_characters - string inserted at the end of truncated paragraph
  #
  # returns self
  def initialize(words, number_of_characters, last_characters)
    @words = words
    @number_of_characters = number_of_characters
    @last_characters = last_characters
  end
  
  def truncator(words, characters, last_characters)
    if words.length > number_of_characters
      (words.length - number_of_characters).times do
        words = words.chop
      end
    end 
      words.insert(-1, last_characters)
  end
  
end

paragraph_truncator_test.rb

require "minitest/autorun"
require_relative "paragraph_truncator.rb"

class ParagraphTruncatorTest < Minitest::Test
  # One of my specs is that the truncator method should reduce the number 
  # of characters in the paragraph to a number specified by the user and
  # insert a user-defined set of characters at the end of the paragraph

  def test_truncator
    short_paragraph = ParagraphTruncator.new("Hey there!", 3, "...")
    assert_equal("Hey...", short_paragraph.truncator("Hey there!", 3, "..."))
  end
  
end