book_test.rb

require 'test/unit'
require 'book'

class BookTest < Test::Unit::TestCase

  def setup
    @book = Book.new
  end

  def test_should_capitalize_the_first_letter
    @book.title = "inferno"
    assert_equal "Inferno", @book.title
  end

  def test_should_capitalize_every_word
    @book.title = "stuart little"
    assert_equal "Stuart Little", @book.title
  end

  # let's pretend that the rule is for words of 3 characters or less
  def test_should_capitalize_every_word_except_small_words_like_the
    @book.title = "alexander the great"
    assert_equal "Alexander the Great", @book.title
  end

  def test_should_capitalize_every_word_except_small_words_like_a
    @book.title = "to kill a mockingbird"
    assert_equal "To Kill a Mockingbird", @book.title
  end

  def test_should_always_capitalize_i
    @book.title = "what i wish i knew when i was 20"
    assert_equal "What I Wish I Knew When I was 20", @book.title
  end
end