test.rb

require 'minitest/autorun'
require 'pry'

class ListAnalyzer
  def initialize
    @vowels = ['a', 'e', 'i', 'o', 'u']
  end

  def number_of_words_starting_with_a_vowel list
    count = 0
    list.each do |word|
      if word.start_with?('a', 'e', 'i', 'o', 'u')
        count += 1
      end
    end
    return count
  end

  def all_words_start_with_vowels? list
    # one option:
    #number_of_words_starting_with_a_vowel(list) == list.length
    list.each do |word|
      if !word.start_with?('a', 'e', 'i', 'o', 'u')
        return false
      end
    end
    return true
  end

  def some_word_starts_with_a_vowel? list
    # one option:
    #number_of_words_starting_with_a_vowel(list) > list.length
    list.each do |word|
      if word.start_with?('a', 'e', 'i', 'o', 'u')
        return true
      end
    end
    return false
  end

  def number_of_vowels_in_all_words list
    number_of_vowels = 0
    list.each do |word|
      word.each_char do |letter|
        #if letter == 'a' || letter == 'e' || letter =='i' || letter == 'o' || letter == 'u'
        if @vowels.include?(letter)
          number_of_vowels += 1
        end
      end
    end
    return number_of_vowels
  end




end


class ListTest < MiniTest::Test
  def test_it_can_count_vowels
    produce = ["apricot", "beet", "clementine", "date", "elderberry"]

    lister = ListAnalyzer.new

    assert_equal 2, lister.number_of_words_starting_with_a_vowel(produce)
  end

  def test_it_can_check_a_whole_list_for_matches
    mostly_vowels = ["iceberg", "ugli", "endive", "plum", "olive"]

    lister = ListAnalyzer.new
    refute lister.all_words_start_with_vowels?(mostly_vowels)

    mostly_vowels.delete "plum"
    assert lister.all_words_start_with_vowels?(mostly_vowels)
  end

  def test_it_can_check_for_a_single_example
    mostly_consonants = ["pear", "quince", "aubergine", "zucchini", "pineapple"]

    lister = ListAnalyzer.new
    assert lister.some_word_starts_with_a_vowel?(mostly_consonants)

    mostly_consonants.delete "aubergine"
    refute lister.some_word_starts_with_a_vowel?(mostly_consonants)
  end

  def test_it_can_count_all_vowels
    produce = ["apricot", "beet", "clementine", "date", "elderberry"]

    lister = ListAnalyzer.new

    assert_equal 14, lister.number_of_vowels_in_all_words(produce)
  end
end