pattern matcher ruby

pattern_generator/lib/pattern_generator.rb

@@ -0,0 +1,39 @@
+require 'pry'
+class PatternGenerator
+
+  attr_reader :letters, :numbers, :all
+
+  def initialize
+    @letters = ("A".."H").to_a + ("J".."N").to_a + ("P".."Z").to_a
+    @numbers = ("2".."9").to_a
+    @all = []
+  end
+
+  def create_all_options
+    first = @letters
+    second = @letters
+    third = @numbers
+    fourth = @letters
+    fifth = @numbers
+
+    first.each do |one|
+      second.each do |two|
+        third.each  do |three|
+          fourth.each do |four|
+            fifth.each do |five|
+              @all << [one,two,three,four,five].join
+            end
+          end
+        end
+      end
+    end
+    @all.count
+  end
+
+  def get_a_random_one
+    @all = @all.shuffle
+    @all.pop
+  end
+
+
+end

pattern_generator/test/pattern_generator_test.rb

@@ -0,0 +1,36 @@
+require 'minitest/autorun'
+require 'minitest/pride'
+require './lib/pattern_generator'
+require 'pry'
+
+class PatternGeneratorTest < Minitest::Test
+  def test_it_exists
+    assert(PatternGenerator.new).is_a? PatternGenerator
+  end
+
+  def test_it_initalizes_with_numbers
+    pattern_generator =  PatternGenerator.new
+    assert_equal ["2", "3", "4", "5", "6", "7", "8", "9"], pattern_generator.numbers
+  end
+
+  def test_it_initalizes_with_letters
+    expected = ["A", "B", "C", "D", "E", "F", "G", "H", "J", "K", "L", "M", "N", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"]
+    pattern_generator =  PatternGenerator.new
+    assert_equal expected, pattern_generator.letters
+  end
+
+  def test_it_can_create_all_options
+    expected = 884736
+    pattern_generator =  PatternGenerator.new
+    assert_equal expected, pattern_generator.create_all_options
+  end
+
+  def test_it_returns_a_random_one_that_will_not_be_still_avaible
+    pattern_generator =  PatternGenerator.new
+    pattern_generator.create_all_options
+    random =  pattern_generator.get_a_random_one
+    refute pattern_generator.all.include?(random)
+  end
+
+
+end