Updated for JRuby

.gitignore

@@ -1 +1,3 @@
 dist
+.project_env.rc
+.path_progress

koans/about_blocks.rb

@@ -60,7 +60,7 @@ class AboutBlocks < EdgeCase::Koan
 
   # ------------------------------------------------------------------
 
-  def test_block_can_effect_variables_in_the_code_where_they_are_created
+  def test_block_can_affect_variables_in_the_code_where_they_are_created
     value = :initial_value
     method_with_block { value = :modified_in_a_block }
     assert_equal __, value

koans/about_dice_project.rb

@@ -7,7 +7,7 @@ class DiceSet
   end
 end
 
-class AboutDiceSet < EdgeCase::Koan
+class AboutDiceProject < EdgeCase::Koan
   def test_can_create_a_dice_set
     dice = DiceSet.new
     assert_not_nil dice

koans/about_iteration.rb

@@ -78,16 +78,26 @@ class AboutIteration < EdgeCase::Koan
     assert_equal __, result
 
     # Files act like a collection of lines
-    file = File.open("example_file.txt")
+    File.open("example_file.txt") do |file|
-    upcase_lines = file.map { |line| line.strip.upcase }
+      upcase_lines = file.map { |line| line.strip.upcase }
-    assert_equal __, upcase_lines
+      assert_equal __, upcase_lines
+    end
 
     # NOTE: You can create your own collections that work with each,
     # map, select, etc.
-  ensure
-    # Arg, this is ugly.
-    # We will figure out how to fix this later.
-    file.close if file
   end
 
+  # Bonus Question:  In the previous koan, we saw the construct:
+  #
+  #   File.open(filename) do |file|
+  #     # code to read 'file'
+  #   end
+  #
+  # Why did we do it that way instead of the following?
+  #
+  #   file = File.open(filename)
+  #   # code to read 'file'
+  #
+  # When you get to the "AboutSandwichCode" koan, recheck your answer.
+
 end

koans/about_regular_expressions.rb

@@ -141,7 +141,7 @@ class AboutRegularExpressions < EdgeCase::Koan
 
   # THINK ABOUT IT:
   #
-  # Explain the difference between a character class ([…]) and alternation (|).
+  # Explain the difference between a character class ([...]) and alternation (|).
 
   # ------------------------------------------------------------------
 

koans/about_sandwich_code.rb

@@ -1,6 +1,6 @@
 require File.expand_path(File.dirname(__FILE__) + '/edgecase')
 
-class AboutUsingBlocks < EdgeCase::Koan
+class AboutSandwichCode < EdgeCase::Koan
 
   def count_lines(file_name)
     file = open(file_name)
@@ -86,7 +86,7 @@ class AboutUsingBlocks < EdgeCase::Koan
   def test_finding_lines2
     assert_equal __, find_line2("example_file.txt")
   end
-  
+
   # ------------------------------------------------------------------
 
   def count_lines3(file_name)

koans/about_scoring_project.rb

@@ -7,7 +7,7 @@ require File.expand_path(File.dirname(__FILE__) + '/edgecase')
 # A greed roll is scored as follows:
 #
 # * A set of three ones is 1000 points
-#   
+#
 # * A set of three numbers (other than ones) is worth 100 times the
 #   number. (e.g. three fives is 500 points).
 #
@@ -33,7 +33,7 @@ def score(dice)
   # You need to write this method
 end
 
-class AboutScoringAssignment < EdgeCase::Koan
+class AboutScoringProject < EdgeCase::Koan
   def test_score_of_an_empty_list_is_zero
     assert_equal 0, score([])
   end

koans/about_symbols.rb

@@ -0,0 +1,77 @@
+require File.expand_path(File.dirname(__FILE__) + '/edgecase')
+
+class AboutSymbols < EdgeCase::Koan
+  def test_symbols_are_symbols
+    symbol = :ruby
+    assert_equal __, symbol.is_a?(Symbol)
+  end
+
+  def test_symbols_can_be_compared
+    symbol1 = :a_symbol
+    symbol2 = :a_symbol
+    symbol3 = :something_else
+
+    assert symbol1 == __
+    assert symbol1 != __
+  end
+
+  def test_identical_symbols_are_a_single_internal_object
+    symbol1 = :a_symbol
+    symbol2 = :a_symbol
+
+    assert symbol1.equal?(__)
+    assert_equal __, symbol2.object_id
+  end
+
+  def test_method_names_become_symbols
+    all_symbols = Symbol.all_symbols
+
+    assert_equal __, all_symbols.include?(:test_method_names_are_symbols)
+  end
+
+  RubyConstant = "What is the sound of one hand clapping?"
+  def test_constants_become_symbols
+    all_symbols = Symbol.all_symbols
+
+    assert_equal true, all_symbols.include?(__)
+  end
+
+  def test_symbols_can_be_made_from_strings
+    string = "catsAndDogs"
+    assert_equal __, string.to_sym
+  end
+
+  def test_symbols_with_spaces_can_be_built
+    symbol = :"cats and dogs"
+
+    assert_equal symbol, __.to_sym
+  end
+
+  def test_to_s_is_called_on_interpolated_symbols
+    symbol = :cats
+    string = "It is raining #{symbol} and dogs."
+
+    assert_equal __, string
+  end
+
+  def test_symbols_are_not_strings
+    symbol = :ruby
+    assert_equal __, symbol.is_a?(String)
+    assert_equal __, symbol.eql?("ruby")
+  end
+
+  def test_symbols_do_not_have_string_methods
+    symbol = :not_a_string
+    assert_equal __, symbol.respond_to?(:each_char)
+    assert_equal __, symbol.respond_to?(:reverse)
+  end
+  # It's important to realize that symbols are not "immutable
+  # strings", though they are immutable. None of the
+  # interesting string operations are available on symbols.
+  def test_symbols_cannot_be_concatenated
+    # Exceptions will be pondered further father down the path
+    assert_raise(___) do
+      :cats + :dogs
+    end
+  end
+end

koans/about_triangle_project.rb

@@ -3,7 +3,7 @@ require File.expand_path(File.dirname(__FILE__) + '/edgecase')
 # You need to write the triangle method in the file 'triangle.rb'
 require 'triangle.rb'
 
-class AboutTriangleAssignment < EdgeCase::Koan
+class AboutTriangleProject < EdgeCase::Koan
   def test_equilateral_triangles_have_equal_sides
     assert_equal :equilateral, triangle(2, 2, 2)
     assert_equal :equilateral, triangle(10, 10, 10)
@@ -22,4 +22,4 @@ class AboutTriangleAssignment < EdgeCase::Koan
     assert_equal :scalene, triangle(5, 4, 2)
   end
 end
-  
+

koans/about_triangle_project_2.rb

@@ -3,14 +3,14 @@ require File.expand_path(File.dirname(__FILE__) + '/edgecase')
 # You need to write the triangle method in the file 'triangle.rb'
 require 'triangle.rb'
 
-class AboutTriangleAssignment2 < EdgeCase::Koan
+class AboutTriangleProject2 < EdgeCase::Koan
   # The first assignment did not talk about how to handle errors.
   # Let's handle that part now.
   def test_illegal_triangles_throw_exceptions
     assert_raise(TriangleError) do triangle(0, 0, 0) end
     assert_raise(TriangleError) do triangle(3, 4, -5) end
     assert_raise(TriangleError) do triangle(1, 1, 3) end
-    assert_raise(TriangleError) do triangle(2, 4, 2) end 
+    assert_raise(TriangleError) do triangle(2, 4, 2) end
  end
 end
-  
+

koans/edgecase.rb

@@ -73,7 +73,7 @@ module EdgeCase
   end
 
   class Sensei
-    attr_reader :failure, :failed_test
+    attr_reader :failure, :failed_test, :pass_count
 
     in_ruby_version("1.8") do
       AssertionError = Test::Unit::AssertionFailedError
@@ -91,16 +91,43 @@ module EdgeCase
       @pass_count = 0
       @failure = nil
       @failed_test = nil
+      @observations = []
     end
 
-    def accumulate(test)
+    PROGRESS_FILE_NAME = '.path_progress'
-      if test.passed?
+
+    def add_progress(prog)
+      @_contents = nil
+      exists = File.exists?(PROGRESS_FILE_NAME)
+      File.open(PROGRESS_FILE_NAME,'a+') do |f|
+        f.print "#{',' if exists}#{prog}"
+      end
+    end
+
+    def progress
+      if @_contents.nil?
+        if File.exists?(PROGRESS_FILE_NAME)
+          File.open(PROGRESS_FILE_NAME,'r') do |f|
+            @_contents = f.read.to_s.gsub(/\s/,'').split(',')
+          end
+        else
+          @_contents = []
+        end
+      end
+      @_contents
+    end
+
+    def observe(step)
+      if step.passed?
         @pass_count += 1
-        puts Color.green("  #{test.name} has expanded your awareness.")
+        if @pass_count > progress.last.to_i
+          @observations << Color.green("#{step.koan_file}##{step.name} has expanded your awareness.")
+        end
       else
-        puts Color.red("  #{test.name} has damaged your karma.")
+        @failed_test = step
-        @failed_test = test
+        @failure = step.failure
-        @failure = test.failure
+        add_progress(@pass_count)
+        @observations << Color.red("#{step.koan_file}##{step.name} has damaged your karma.")
         throw :edgecase_exit
       end
     end
@@ -113,22 +140,115 @@ module EdgeCase
       failure.is_a?(AssertionError)
     end
 
-    def report
+    def instruct
       if failed?
-        puts
+        @observations.each{|c| puts c }
-        puts Color.green("You have not yet reached enlightenment ...")
+        encourage
-        puts Color.red(failure.message)
+        guide_through_error
-        puts
+        a_zenlike_statement
-        puts Color.green("Please meditate on the following code:")
+        show_progress
-        if assert_failed?
+      else
-          #puts find_interesting_lines(failure.backtrace)
+        end_screen
-          puts find_interesting_lines(failure.backtrace).collect {|l| Color.red(l) }
-        else
-          puts Color.red(failure.backtrace)
-        end
-        puts
       end
-      puts Color.green(a_zenlike_statement)
+    end
+
+    def show_progress
+      bar_width = 50
+      total_tests = EdgeCase::Koan.total_tests
+      scale = bar_width.to_f/total_tests
+      print Color.green("your path thus far [")
+      happy_steps = (pass_count*scale).to_i
+      happy_steps = 1 if happy_steps == 0 && pass_count > 0
+      print Color.green('.'*happy_steps)
+      if failed?
+        print Color.red('X')
+        print Color.cyan('_'*(bar_width-1-happy_steps))
+      end
+      print Color.green(']')
+      print " #{pass_count}/#{total_tests}"
+      puts
+    end
+
+    def end_screen
+        completed = <<-ENDTEXT
+                                  ,,   ,  ,,
+                                :      ::::,    :::,
+                   ,        ,,: :::::::::::::,,  ::::   :  ,
+                 ,       ,,,   ,:::::::::::::::::::,  ,:  ,: ,,
+            :,        ::,  , , :, ,::::::::::::::::::, :::  ,::::
+           :   :    ::,                          ,:::::::: ::, ,::::
+          ,     ,:::::                                  :,:::::::,::::,
+      ,:     , ,:,,:                                       :::::::::::::
+     ::,:   ,,:::,                                           ,::::::::::::,
+    ,:::, :,,:::                                               ::::::::::::,
+   ,::: :::::::,       Mountains are again merely mountains     ,::::::::::::
+   :::,,,::::::                                                   ::::::::::::
+ ,:::::::::::,                                                    ::::::::::::,
+ :::::::::::,                                                     ,::::::::::::
+:::::::::::::                                                     ,::::::::::::
+::::::::::::                       Ruby Koans                      ::::::::::::,
+::::::::::::                                                      ,::::::::::::,
+:::::::::::,                                                      , ::::::::::::
+,:::::::::::::,                brought to you by                 ,,::::::::::::,
+::::::::::::::                                                    ,::::::::::::
+ ::::::::::::::,                                                 ,:::::::::::::
+ ::::::::::::,             EdgeCase Software Artisans           , ::::::::::::
+  :,::::::::: ::::                                               :::::::::::::
+   ,:::::::::::  ,:                                          ,,:::::::::::::,
+     ::::::::::::                                           ,::::::::::::::,
+      :::::::::::::::::,                                  ::::::::::::::::
+       :::::::::::::::::::,                             ::::::::::::::::
+        ::::::::::::::::::::::,                     ,::::,:, , ::::,:::
+          :::::::::::::::::::::::,               ::,: ::,::, ,,: ::::
+              ,::::::::::::::::::::              ::,,  , ,,  ,::::
+                 ,::::::::::::::::              ::,, ,   ,:::,
+                      ,::::                         , ,,
+                                                  ,,,
+ENDTEXT
+        puts completed
+    end
+
+    def encourage
+      puts
+      puts "The Master says:"
+      puts Color.cyan("  You have not yet reached enlightenment.")
+      if ((recents = progress.last(5)) && recents.size == 5 && recents.uniq.size == 1)
+        puts Color.cyan("  I sense frustration. Do not be afraid to ask for help.")
+      elsif progress.last(2).size == 2 && progress.last(2).uniq.size == 1
+        puts Color.cyan("  Do not lose hope.")
+      elsif progress.last.to_i > 0
+        puts Color.cyan("  You are progressing. Excellent. #{progress.last} completed.")
+      end
+    end
+
+    def guide_through_error
+      puts
+      puts "The answers you seek..."
+      puts Color.red(indent(failure.message).join)
+      puts
+      puts "Please meditate on the following code:"
+      if assert_failed?
+        puts embolden_first_line_only(indent(find_interesting_lines(failure.backtrace)))
+      else
+        puts embolden_first_line_only(indent(failure.backtrace))
+      end
+      puts
+    end
+
+    def embolden_first_line_only(text)
+      first_line = true
+      text.collect { |t|
+        if first_line
+          first_line = false
+          Color.red(t)
+        else
+          Color.cyan(t)
+        end
+      }
+    end
+
+    def indent(text)
+      text.collect{|t| "  #{t}"}
     end
 
     def find_interesting_lines(backtrace)
@@ -140,7 +260,6 @@ module EdgeCase
     # Hat's tip to Ara T. Howard for the zen statements from his
     # metakoans Ruby Quiz (http://rubyquiz.com/quiz67.html)
     def a_zenlike_statement
-      puts
       if !failed?
         zen_statement =  "Mountains are again merely mountains"
       else
@@ -159,18 +278,21 @@ module EdgeCase
           "things are not what they appear to be: nor are they otherwise"
         end
       end
-      zen_statement
+      puts Color.green(zen_statement)
     end
   end
 
   class Koan
     include Test::Unit::Assertions
 
-    attr_reader :name, :failure
+    attr_reader :name, :failure, :koan_count, :step_count, :koan_file
 
-    def initialize(name)
+    def initialize(name, koan_file=nil, koan_count=0, step_count=0)
       @name = name
       @failure = nil
+      @koan_count = koan_count
+      @step_count = step_count
+      @koan_file = koan_file
     end
 
     def passed?
@@ -187,6 +309,22 @@ module EdgeCase
     def teardown
     end
 
+    def meditate
+      setup
+      begin
+        send(name)
+      rescue StandardError, EdgeCase::Sensei::AssertionError => ex
+        failed(ex)
+      ensure
+        begin
+          teardown
+        rescue StandardError, EdgeCase::Sensei::AssertionError => ex
+          failed(ex) if passed?
+        end
+      end
+      self
+    end
+
     # Class methods for the EdgeCase test suite.
     class << self
       def inherited(subclass)
@@ -194,32 +332,7 @@ module EdgeCase
       end
 
       def method_added(name)
-        testmethods << name unless tests_disabled?
+        testmethods << name if !tests_disabled? && Koan.test_pattern =~ name.to_s
-      end
-
-      def run_tests(accumulator)
-        puts
-        puts Color.green("Thinking #{self}")
-        testmethods.each do |m|
-          self.run_test(m, accumulator) if Koan.test_pattern =~ m.to_s
-        end
-      end
-
-      def run_test(method, accumulator)
-        test = self.new(method)
-        test.setup
-        begin
-          test.send(method)
-        rescue StandardError, EdgeCase::Sensei::AssertionError => ex
-          test.failed(ex)
-        ensure
-          begin
-            test.teardown
-          rescue StandardError, EdgeCase::Sensei::AssertionError => ex
-            test.failed(ex) if test.passed?
-          end
-        end
-        accumulator.accumulate(test)
       end
 
       def end_of_enlightenment
@@ -261,17 +374,36 @@ module EdgeCase
         @test_pattern ||= /^test_/
       end
 
+      def total_tests
+        self.subclasses.inject(0){|total, k| total + k.testmethods.size }
+      end
+    end
+  end
+
+  class ThePath
+    def walk
+      sensei = EdgeCase::Sensei.new
+      each_step do |step|
+        sensei.observe(step.meditate)
+      end
+      sensei.instruct
+    end
+
+    def each_step
+      catch(:edgecase_exit) {
+        step_count = 0
+        EdgeCase::Koan.subclasses.each_with_index do |koan,koan_index|
+          koan.testmethods.each do |method_name|
+            step = koan.new(method_name, koan.to_s, koan_index+1, step_count+=1)
+            yield step
+          end
+        end
+      }
     end
   end
 end
 
 END {
   EdgeCase::Koan.command_line(ARGV)
-  zen_master = EdgeCase::Sensei.new
+  EdgeCase::ThePath.new.walk
-  catch(:edgecase_exit) {
-    EdgeCase::Koan.subclasses.each do |sc|
-      sc.run_tests(zen_master)
-    end
-  }
-  zen_master.report
 }

koans/path_to_enlightenment.rb

@@ -8,6 +8,7 @@ require 'about_arrays'
 require 'about_array_assignment'
 require 'about_hashes'
 require 'about_strings'
+require 'about_symbols'
 require 'about_regular_expressions'
 require 'about_methods'
 require 'about_constants'

src/about_blocks.rb

@@ -60,7 +60,7 @@ class AboutBlocks < EdgeCase::Koan
 
   # ------------------------------------------------------------------
 
-  def test_block_can_effect_variables_in_the_code_where_they_are_created
+  def test_block_can_affect_variables_in_the_code_where_they_are_created
     value = :initial_value
     method_with_block { value = :modified_in_a_block }
     assert_equal __(:modified_in_a_block), value

src/about_dice_project.rb

@@ -7,7 +7,7 @@ class DiceSet
   end
 end
 
-class AboutDiceSet < EdgeCase::Koan
+class AboutDiceProject < EdgeCase::Koan
   def test_can_create_a_dice_set
     dice = DiceSet.new
     assert_not_nil dice

src/about_iteration.rb

@@ -78,16 +78,26 @@ class AboutIteration < EdgeCase::Koan
     assert_equal __([11, 12, 13]), result
 
     # Files act like a collection of lines
-    file = File.open("example_file.txt")
+    File.open("example_file.txt") do |file|
-    upcase_lines = file.map { |line| line.strip.upcase }
+      upcase_lines = file.map { |line| line.strip.upcase }
-    assert_equal __(["THIS", "IS", "A", "TEST"]), upcase_lines
+      assert_equal __(["THIS", "IS", "A", "TEST"]), upcase_lines
+    end
 
     # NOTE: You can create your own collections that work with each,
     # map, select, etc.
-  ensure
-    # Arg, this is ugly.
-    # We will figure out how to fix this later.
-    file.close if file
   end
 
+  # Bonus Question:  In the previous koan, we saw the construct:
+  #
+  #   File.open(filename) do |file|
+  #     # code to read 'file'
+  #   end
+  #
+  # Why did we do it that way instead of the following?
+  #
+  #   file = File.open(filename)
+  #   # code to read 'file'
+  #
+  # When you get to the "AboutSandwichCode" koan, recheck your answer.
+
 end

src/about_methods.rb

@@ -3,7 +3,7 @@ require File.expand_path(File.dirname(__FILE__) + '/edgecase')
 def my_global_method(a,b)
   a + b
 end
-  
+
 class AboutMethods < EdgeCase::Koan
 
   def test_calling_global_methods
@@ -36,19 +36,19 @@ class AboutMethods < EdgeCase::Koan
     # Rewrite the eval string to continue.
     #
   end
-  
+
   # NOTE: wrong number of argument is not a SYNTAX error, but a
   # runtime error.
   def test_calling_global_methods_with_wrong_number_of_arguments
     exception = assert_raise(___(ArgumentError)) do
       my_global_method
     end
-    assert_match(/#{__("wrong number of arguments")}/, exception.message)
+    assert_match(/#{__("wrong (number|#) of arguments")}/, exception.message)
 
     exception = assert_raise(___(ArgumentError)) do
       my_global_method(1,2,3)
     end
-    assert_match(/#{__("wrong number of arguments")}/, exception.message)
+    assert_match(/#{__("wrong (number|#) of arguments")}/, exception.message)
   end
 
   # ------------------------------------------------------------------
@@ -142,7 +142,7 @@ class AboutMethods < EdgeCase::Koan
       "tail"
     end
   end
-  
+
   def test_calling_methods_in_other_objects_require_explicit_receiver
     rover = Dog.new
     assert_equal __("Fido"), rover.name

src/about_regular_expressions.rb

@@ -141,7 +141,7 @@ class AboutRegularExpressions < EdgeCase::Koan
 
   # THINK ABOUT IT:
   #
-  # Explain the difference between a character class ([…]) and alternation (|).
+  # Explain the difference between a character class ([...]) and alternation (|).
 
   # ------------------------------------------------------------------
 

src/about_sandwich_code.rb

@@ -1,6 +1,6 @@
 require File.expand_path(File.dirname(__FILE__) + '/edgecase')
 
-class AboutUsingBlocks < EdgeCase::Koan
+class AboutSandwichCode < EdgeCase::Koan
 
   def count_lines(file_name)
     file = open(file_name)
@@ -93,7 +93,7 @@ class AboutUsingBlocks < EdgeCase::Koan
   def test_finding_lines2
     assert_equal __("test\n"), find_line2("example_file.txt")
   end
-  
+
   # ------------------------------------------------------------------
 
   def count_lines3(file_name)

src/about_scoring_project.rb

@@ -7,7 +7,7 @@ require File.expand_path(File.dirname(__FILE__) + '/edgecase')
 # A greed roll is scored as follows:
 #
 # * A set of three ones is 1000 points
-#   
+#
 # * A set of three numbers (other than ones) is worth 100 times the
 #   number. (e.g. three fives is 500 points).
 #
@@ -54,7 +54,7 @@ def score(dice)
   #++
 end
 
-class AboutScoringAssignment < EdgeCase::Koan
+class AboutScoringProject < EdgeCase::Koan
   def test_score_of_an_empty_list_is_zero
     assert_equal 0, score([])
   end

src/about_symbols.rb

@@ -0,0 +1,100 @@
+require File.expand_path(File.dirname(__FILE__) + '/edgecase')
+
+class AboutSymbols < EdgeCase::Koan
+  def test_symbols_are_symbols
+    symbol = :ruby
+    assert_equal __(true), symbol.is_a?(Symbol)
+  end
+
+  def test_symbols_can_be_compared
+    symbol1 = :a_symbol
+    symbol2 = :a_symbol
+    symbol3 = :something_else
+
+    assert symbol1 == __(symbol2)
+    assert symbol1 != __(symbol3)
+  end
+
+  def test_identical_symbols_are_a_single_internal_object
+    symbol1 = :a_symbol
+    symbol2 = :a_symbol
+
+    assert symbol1.equal?(__(symbol2))
+    assert_equal __(symbol1.object_id), symbol2.object_id
+  end
+
+  def test_method_names_become_symbols
+    all_symbols = Symbol.all_symbols
+    assert_equal __(true), all_symbols.include?(:test_method_names_become_symbols)
+  end
+
+  # THINK ABOUT IT:
+  #
+  # Why do we capture the list of symbols before we check for the
+  # method name?
+
+  in_ruby_version("mri") do
+    RubyConstant = "What is the sound of one hand clapping?"
+    def test_constants_become_symbols
+      all_symbols = Symbol.all_symbols
+
+      assert_equal __(true), all_symbols.include?(__(:RubyConstant))
+    end
+  end
+
+  def test_symbols_can_be_made_from_strings
+    string = "catsAndDogs"
+    assert_equal __(:catsAndDogs), string.to_sym
+  end
+
+  def test_symbols_with_spaces_can_be_built
+    symbol = :"cats and dogs"
+
+    assert_equal symbol, __("cats and dogs").to_sym
+  end
+
+  def test_symbols_with_spaces_can_be_built
+    value = "and"
+    symbol = :"cats #{value} dogs"
+
+    assert_equal symbol, __("cats and dogs").to_sym
+  end
+
+  def test_to_s_is_called_on_interpolated_symbols
+    symbol = :cats
+    string = "It is raining #{symbol} and dogs."
+
+    assert_equal __('It is raining cats and dogs.'), string
+  end
+
+  def test_symbols_are_not_strings
+    symbol = :ruby
+    assert_equal __(false), symbol.is_a?(String)
+    assert_equal __(false), symbol.eql?("ruby")
+  end
+
+  def test_symbols_do_not_have_string_methods
+    symbol = :not_a_string
+    assert_equal __(false), symbol.respond_to?(:each_char)
+    assert_equal __(false), symbol.respond_to?(:reverse)
+  end
+
+  # It's important to realize that symbols are not "immutable
+  # strings", though they are immutable. None of the
+  # interesting string operations are available on symbols.
+
+  def test_symbols_cannot_be_concatenated
+    # Exceptions will be pondered further father down the path
+    assert_raise(___(NoMethodError)) do
+      :cats + :dogs
+    end
+  end
+
+  def test_symbols_can_be_dynamically_created
+    assert_equal __(:catsdogs), ("cats" + "dogs").to_sym
+  end
+
+  # THINK ABOUT IT:
+  #
+  # Why is it not a good idea to dynamically create a lot of symbols?
+end

src/about_triangle_project.rb

@@ -3,7 +3,7 @@ require File.expand_path(File.dirname(__FILE__) + '/edgecase')
 # You need to write the triangle method in the file 'triangle.rb'
 require 'triangle.rb'
 
-class AboutTriangleAssignment < EdgeCase::Koan
+class AboutTriangleProject < EdgeCase::Koan
   def test_equilateral_triangles_have_equal_sides
     assert_equal :equilateral, triangle(2, 2, 2)
     assert_equal :equilateral, triangle(10, 10, 10)
@@ -22,4 +22,4 @@ class AboutTriangleAssignment < EdgeCase::Koan
     assert_equal :scalene, triangle(5, 4, 2)
   end
 end
-  
+

src/about_triangle_project_2.rb

@@ -3,14 +3,14 @@ require File.expand_path(File.dirname(__FILE__) + '/edgecase')
 # You need to write the triangle method in the file 'triangle.rb'
 require 'triangle.rb'
 
-class AboutTriangleAssignment2 < EdgeCase::Koan
+class AboutTriangleProject2 < EdgeCase::Koan
   # The first assignment did not talk about how to handle errors.
   # Let's handle that part now.
   def test_illegal_triangles_throw_exceptions
     assert_raise(TriangleError) do triangle(0, 0, 0) end
     assert_raise(TriangleError) do triangle(3, 4, -5) end
     assert_raise(TriangleError) do triangle(1, 1, 3) end
-    assert_raise(TriangleError) do triangle(2, 4, 2) end 
+    assert_raise(TriangleError) do triangle(2, 4, 2) end
  end
 end
-  
+

src/edgecase.rb

@@ -6,8 +6,14 @@ require 'test/unit/assertions'
 class FillMeInError < StandardError
 end
 
-def in_ruby_version(version)
+def ruby_version?(version)
-  yield if RUBY_VERSION =~ /^#{version}/
+  RUBY_VERSION =~ /^#{version}/ ||
+    (version == 'jruby' && defined?(JRUBY_VERSION)) ||
+    (version == 'mri' && ! defined?(JRUBY_VERSION))
+end
+
+def in_ruby_version(*versions)
+  yield if versions.any? { |v| ruby_version?(v) }
 end
 
 def __(value="FILL ME IN", value19=:mu)
@@ -73,7 +79,7 @@ module EdgeCase
   end
 
   class Sensei
-    attr_reader :failure, :failed_test
+    attr_reader :failure, :failed_test, :pass_count
 
     in_ruby_version("1.8") do
       AssertionError = Test::Unit::AssertionFailedError
@@ -91,16 +97,43 @@ module EdgeCase
       @pass_count = 0
       @failure = nil
       @failed_test = nil
+      @observations = []
     end
 
-    def accumulate(test)
+    PROGRESS_FILE_NAME = '.path_progress'
-      if test.passed?
+
+    def add_progress(prog)
+      @_contents = nil
+      exists = File.exists?(PROGRESS_FILE_NAME)
+      File.open(PROGRESS_FILE_NAME,'a+') do |f|
+        f.print "#{',' if exists}#{prog}"
+      end
+    end
+
+    def progress
+      if @_contents.nil?
+        if File.exists?(PROGRESS_FILE_NAME)
+          File.open(PROGRESS_FILE_NAME,'r') do |f|
+            @_contents = f.read.to_s.gsub(/\s/,'').split(',')
+          end
+        else
+          @_contents = []
+        end
+      end
+      @_contents
+    end
+
+    def observe(step)
+      if step.passed?
         @pass_count += 1
-        puts Color.green("  #{test.name} has expanded your awareness.")
+        if @pass_count > progress.last.to_i
+          @observations << Color.green("#{step.koan_file}##{step.name} has expanded your awareness.")
+        end
       else
-        puts Color.red("  #{test.name} has damaged your karma.")
+        @failed_test = step
-        @failed_test = test
+        @failure = step.failure
-        @failure = test.failure
+        add_progress(@pass_count)
+        @observations << Color.red("#{step.koan_file}##{step.name} has damaged your karma.")
         throw :edgecase_exit
       end
     end
@@ -113,22 +146,116 @@ module EdgeCase
       failure.is_a?(AssertionError)
     end
 
-    def report
+    def instruct
       if failed?
-        puts
+        @observations.each{|c| puts c }
-        puts Color.green("You have not yet reached enlightenment ...")
+        encourage
-        puts Color.red(failure.message)
+        guide_through_error
-        puts
+        a_zenlike_statement
-        puts Color.green("Please meditate on the following code:")
+        show_progress
-        if assert_failed?
+      else
-          #puts find_interesting_lines(failure.backtrace)
+        end_screen
-          puts find_interesting_lines(failure.backtrace).collect {|l| Color.red(l) }
-        else
-          puts Color.red(failure.backtrace)
-        end
-        puts
       end
-      puts Color.green(a_zenlike_statement)
+    end
+
+    def show_progress
+      bar_width = 50
+      total_tests = EdgeCase::Koan.total_tests
+      scale = bar_width.to_f/total_tests
+      print Color.green("your path thus far [")
+      happy_steps = (pass_count*scale).to_i
+      happy_steps = 1 if happy_steps == 0 && pass_count > 0
+      print Color.green('.'*happy_steps)
+      if failed?
+        print Color.red('X')
+        print Color.cyan('_'*(bar_width-1-happy_steps))
+      end
+      print Color.green(']')
+      print " #{pass_count}/#{total_tests}"
+      puts
+    end
+
+    def end_screen
+        completed = <<-ENDTEXT
+                                  ,,   ,  ,,
+                                :      ::::,    :::,
+                   ,        ,,: :::::::::::::,,  ::::   :  ,
+                 ,       ,,,   ,:::::::::::::::::::,  ,:  ,: ,,
+            :,        ::,  , , :, ,::::::::::::::::::, :::  ,::::
+           :   :    ::,                          ,:::::::: ::, ,::::
+          ,     ,:::::                                  :,:::::::,::::,
+      ,:     , ,:,,:                                       :::::::::::::
+     ::,:   ,,:::,                                           ,::::::::::::,
+    ,:::, :,,:::                                               ::::::::::::,
+   ,::: :::::::,       Mountains are again merely mountains     ,::::::::::::
+   :::,,,::::::                                                   ::::::::::::
+ ,:::::::::::,                                                    ::::::::::::,
+ :::::::::::,                                                     ,::::::::::::
+:::::::::::::                                                     ,::::::::::::
+::::::::::::                       Ruby Koans                      ::::::::::::,
+::::::::::::                                                      ,::::::::::::,
+:::::::::::,                                                      , ::::::::::::
+,:::::::::::::,                brought to you by                 ,,::::::::::::,
+::::::::::::::                                                    ,::::::::::::
+ ::::::::::::::,                                                 ,:::::::::::::
+ ::::::::::::,             EdgeCase Software Artisans           , ::::::::::::
+  :,::::::::: ::::                                               :::::::::::::
+   ,:::::::::::  ,:                                          ,,:::::::::::::,
+     ::::::::::::                                           ,::::::::::::::,
+      :::::::::::::::::,                                  ::::::::::::::::
+       :::::::::::::::::::,                             ::::::::::::::::
+        ::::::::::::::::::::::,                     ,::::,:, , ::::,:::
+          :::::::::::::::::::::::,               ::,: ::,::, ,,: ::::
+              ,::::::::::::::::::::              ::,,  , ,,  ,::::
+                 ,::::::::::::::::              ::,, ,   ,:::,
+                      ,::::                         , ,,
+                                                  ,,,
+ENDTEXT
+        puts completed
+    end
+
+    def encourage
+      puts
+      puts "The Master says:"
+      puts Color.cyan("  You have not yet reached enlightenment.")
+      if ((recents = progress.last(5)) && recents.size == 5 && recents.uniq.size == 1)
+        puts Color.cyan("  I sense frustration. Do not be afraid to ask for help.")
+      elsif progress.last(2).size == 2 && progress.last(2).uniq.size == 1
+        puts Color.cyan("  Do not lose hope.")
+      elsif progress.last.to_i > 0
+        puts Color.cyan("  You are progressing. Excellent. #{progress.last} completed.")
+      end
+    end
+
+    def guide_through_error
+      puts
+      puts "The answers you seek..."
+      puts Color.red(indent(failure.message).join)
+      puts
+      puts "Please meditate on the following code:"
+      if assert_failed?
+        puts embolden_first_line_only(indent(find_interesting_lines(failure.backtrace)))
+      else
+        puts embolden_first_line_only(indent(failure.backtrace))
+      end
+      puts
+    end
+
+    def embolden_first_line_only(text)
+      first_line = true
+      text.collect { |t|
+        if first_line
+          first_line = false
+          Color.red(t)
+        else
+          Color.cyan(t)
+        end
+      }
+    end
+
+    def indent(text)
+      text = text.split(/\n/) if text.is_a?(String)
+      text.collect{|t| "  #{t}"}
     end
 
     def find_interesting_lines(backtrace)
@@ -140,7 +267,6 @@ module EdgeCase
     # Hat's tip to Ara T. Howard for the zen statements from his
     # metakoans Ruby Quiz (http://rubyquiz.com/quiz67.html)
     def a_zenlike_statement
-      puts
       if !failed?
         zen_statement =  "Mountains are again merely mountains"
       else
@@ -159,18 +285,21 @@ module EdgeCase
           "things are not what they appear to be: nor are they otherwise"
         end
       end
-      zen_statement
+      puts Color.green(zen_statement)
     end
   end
 
   class Koan
     include Test::Unit::Assertions
 
-    attr_reader :name, :failure
+    attr_reader :name, :failure, :koan_count, :step_count, :koan_file
 
-    def initialize(name)
+    def initialize(name, koan_file=nil, koan_count=0, step_count=0)
       @name = name
       @failure = nil
+      @koan_count = koan_count
+      @step_count = step_count
+      @koan_file = koan_file
     end
 
     def passed?
@@ -187,6 +316,22 @@ module EdgeCase
     def teardown
     end
 
+    def meditate
+      setup
+      begin
+        send(name)
+      rescue StandardError, EdgeCase::Sensei::AssertionError => ex
+        failed(ex)
+      ensure
+        begin
+          teardown
+        rescue StandardError, EdgeCase::Sensei::AssertionError => ex
+          failed(ex) if passed?
+        end
+      end
+      self
+    end
+
     # Class methods for the EdgeCase test suite.
     class << self
       def inherited(subclass)
@@ -194,32 +339,7 @@ module EdgeCase
       end
 
       def method_added(name)
-        testmethods << name unless tests_disabled?
+        testmethods << name if !tests_disabled? && Koan.test_pattern =~ name.to_s
-      end
-
-      def run_tests(accumulator)
-        puts
-        puts Color.green("Thinking #{self}")
-        testmethods.each do |m|
-          self.run_test(m, accumulator) if Koan.test_pattern =~ m.to_s
-        end
-      end
-
-      def run_test(method, accumulator)
-        test = self.new(method)
-        test.setup
-        begin
-          test.send(method)
-        rescue StandardError, EdgeCase::Sensei::AssertionError => ex
-          test.failed(ex)
-        ensure
-          begin
-            test.teardown
-          rescue StandardError, EdgeCase::Sensei::AssertionError => ex
-            test.failed(ex) if test.passed?
-          end
-        end
-        accumulator.accumulate(test)
       end
 
       def end_of_enlightenment
@@ -261,17 +381,36 @@ module EdgeCase
         @test_pattern ||= /^test_/
       end
 
+      def total_tests
+        self.subclasses.inject(0){|total, k| total + k.testmethods.size }
+      end
+    end
+  end
+
+  class ThePath
+    def walk
+      sensei = EdgeCase::Sensei.new
+      each_step do |step|
+        sensei.observe(step.meditate)
+      end
+      sensei.instruct
+    end
+
+    def each_step
+      catch(:edgecase_exit) {
+        step_count = 0
+        EdgeCase::Koan.subclasses.each_with_index do |koan,koan_index|
+          koan.testmethods.each do |method_name|
+            step = koan.new(method_name, koan.to_s, koan_index+1, step_count+=1)
+            yield step
+          end
+        end
+      }
     end
   end
 end
 
 END {
   EdgeCase::Koan.command_line(ARGV)
-  zen_master = EdgeCase::Sensei.new
+  EdgeCase::ThePath.new.walk
-  catch(:edgecase_exit) {
-    EdgeCase::Koan.subclasses.each do |sc|
-      sc.run_tests(zen_master)
-    end
-  }
-  zen_master.report
 }

src/path_to_enlightenment.rb

@@ -8,6 +8,7 @@ require 'about_arrays'
 require 'about_array_assignment'
 require 'about_hashes'
 require 'about_strings'
+require 'about_symbols'
 require 'about_regular_expressions'
 require 'about_methods'
 require 'about_constants'