about_sensei finale for closure to koans exercises

koans/about_sensei.rb

@@ -0,0 +1,118 @@
+require File.expand_path(File.dirname(__FILE__) + '/edgecase')
+
+class Sensei
+  def observe(step)
+    # Step Protocol: step.passed? | step.failure | step.koan_file | step.name
+    # WRITE THIS CODE
+  end
+
+  def pass_count
+    # WRITE THIS CODE
+  end
+
+  def failed?
+    # WRITE THIS CODE
+  end
+
+  def instruct
+    # WRITE THIS CODE
+  end
+end
+
+def student_passes_test
+  assert true  # DO NOT CHANGE YOUR STUDENT'S ANSWER
+end
+
+def student_fails_test
+  assert false # DO NOT CHANGE YOUR STUDENT'S ANSWER
+end
+
+class AboutSensei < EdgeCase::Koan
+  def test_sensei_comments_about_expanded_awareness
+    you = Sensei.new
+    student_step = EdgeCase::Koan.new(:student_passes_test, self)
+    student_meditation = student_step.meditate
+    observation = you.observe(student_meditation)
+    assert_equal "AboutSensei#student_passes_test has expanded your awareness.", observation
+  end
+
+  def test_sensei_comments_about_damaged_karma
+    you = Sensei.new
+    student_step = EdgeCase::Koan.new(:student_fails_test, self)
+    student_meditation = student_step.meditate
+    observation = you.observe(student_meditation)
+    assert_equal "AboutSensei#student_fails_test has damaged your karma.", observation
+  end
+
+  def test_sensei_counts_passed_steps
+    you = Sensei.new
+    student_steps = [EdgeCase::Koan.new(:student_passes_test, self),
+                     EdgeCase::Koan.new(:student_passes_test, self),
+                     EdgeCase::Koan.new(:student_passes_test, self),
+                     EdgeCase::Koan.new(:student_passes_test, self),
+                     EdgeCase::Koan.new(:student_fails_test, self)]
+    student_steps.each do |step|
+      you.observe step.meditate
+    end
+    assert_equal 4, you.pass_count
+  end
+
+  def test_sensei_reports_failed_true
+    you = Sensei.new
+    student_steps = [EdgeCase::Koan.new(:student_passes_test, self),
+                     EdgeCase::Koan.new(:student_fails_test, self)]
+    student_steps.each do |step|
+      you.observe step
+    end
+    assert you.failed?
+  end
+
+  def test_sensei_reports_failed_true
+    you = Sensei.new
+    student_steps = [EdgeCase::Koan.new(:student_passes_test, self),
+                     EdgeCase::Koan.new(:student_passes_test, self)]
+    student_steps.each do |step|
+      you.observe step
+    end
+    assert ! you.failed?
+  end
+
+  def test_sensei_shows_beginning_progress
+    you = Sensei.new
+    student_steps = [EdgeCase::Koan.new(:student_fails_test, self),
+                     EdgeCase::Koan.new(:student_fails_test, self),
+                     EdgeCase::Koan.new(:student_fails_test, self),
+                     EdgeCase::Koan.new(:student_fails_test, self),
+                     EdgeCase::Koan.new(:student_fails_test, self)]
+    student_steps.each do |step|
+      you.observe step.meditate
+    end
+    instructions = you.instruct
+    assert_match "You have not yet reached enlightenment", instructions
+    assert_match "You have passed 0 steps", instructions
+  end
+
+  def test_sensei_shows_partial_progress
+    you = Sensei.new
+    student_steps = [EdgeCase::Koan.new(:student_passes_test, self),
+                     EdgeCase::Koan.new(:student_passes_test, self),
+                     EdgeCase::Koan.new(:student_passes_test, self),
+                     EdgeCase::Koan.new(:student_fails_test, self),
+                     EdgeCase::Koan.new(:student_fails_test, self)]
+    student_steps.each do |step|
+      you.observe step.meditate
+    end
+    instructions = you.instruct
+    assert_match "You have not yet reached enlightenment", instructions
+    assert_match "You have passed 3 steps", instructions
+  end
+
+  def test_sensei_congratulates_student
+    you = Sensei.new
+    # run all of Ruby Koans with you as the sensei
+    EdgeCase::ThePath.new(you).walk
+
+    instructions = you.instruct
+    assert_match "The student has become the master", instructions
+  end
+end

koans/edgecase.rb

@@ -124,7 +124,10 @@ module EdgeCase
       @pass_count = 0
       @failure = nil
       @failed_test = nil
-      @observations = []
+    end
+
+    def observations
+      @observations ||= []
     end
 
     PROGRESS_FILE_NAME = '.path_progress'
@@ -154,13 +157,13 @@ module EdgeCase
       if step.passed?
         @pass_count += 1
         if @pass_count > progress.last.to_i
-          @observations << Color.green("#{step.koan_file}##{step.name} has expanded your awareness.")
+          observations << Color.green("#{step.koan_file}##{step.name} has expanded your awareness.")
         end
       else
         @failed_test = step
         @failure = step.failure
         add_progress(@pass_count)
-        @observations << Color.red("#{step.koan_file}##{step.name} has damaged your karma.")
+        observations << Color.red("#{step.koan_file}##{step.name} has damaged your karma.")
         throw :edgecase_exit
       end
     end
@@ -175,7 +178,7 @@ module EdgeCase
 
     def instruct
       if failed?
-        @observations.each{|c| puts c }
+        observations.each{|c| puts c }
         encourage
         guide_through_error
         a_zenlike_statement
@@ -203,22 +206,23 @@ module EdgeCase
     end
 
     def end_screen
-      if EdgeCase.simple_output
+      screen = if EdgeCase.simple_output
-        boring_end_screen
+        end_message
       else
         artistic_end_screen
       end
+      puts screen
     end
 
-    def boring_end_screen
+    def end_message
-      puts "Mountains are again merely mountains"
+      "The student has become the master"
     end
 
     def artistic_end_screen
       "JRuby 1.9.x Koans"
       ruby_version = "(in #{'J' if defined?(JRUBY_VERSION)}Ruby #{defined?(JRUBY_VERSION) ? JRUBY_VERSION : RUBY_VERSION})"
       ruby_version = ruby_version.side_padding(54)
-        completed = <<-ENDTEXT
+      return <<-ENDTEXT
                                   ,,   ,  ,,
                                 :      ::::,    :::,
                    ,        ,,: :::::::::::::,,  ::::   :  ,
@@ -229,7 +233,7 @@ module EdgeCase
       ,:     , ,:,,:                                       :::::::::::::
      ::,:   ,,:::,                                           ,::::::::::::,
     ,:::, :,,:::                                               ::::::::::::,
-   ,::: :::::::,       Mountains are again merely mountains     ,::::::::::::
+   ,::: :::::::,#{        end_message.side_padding 48          },::::::::::::
    :::,,,::::::                                                   ::::::::::::
  ,:::::::::::,                                                    ::::::::::::,
  :::::::::::,                                                     ,::::::::::::
@@ -253,7 +257,6 @@ module EdgeCase
                       ,::::                         , ,,
                                                   ,,,
 ENDTEXT
-        puts completed
     end
 
     def encourage
@@ -430,21 +433,26 @@ ENDTEXT
   end
 
   class ThePath
+    def initialize(sensei=nil)
+      @sensei = sensei || Sensei.new
+    end
+
     def walk
-      sensei = EdgeCase::Sensei.new
       each_step do |step|
-        sensei.observe(step.meditate)
+        @sensei.observe(step.meditate)
       end
-      sensei.instruct
+      @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|
+          if @sensei.instance_of?(EdgeCase::Sensei) || (koan.to_s != "AboutSensei")
-            step = koan.new(method_name, koan.to_s, koan_index+1, step_count+=1)
+            koan.testmethods.each do |method_name|
-            yield step
+              step = koan.new(method_name, koan.to_s, koan_index+1, step_count+=1)
+              yield step
+            end
           end
         end
       }

koans/path_to_enlightenment.rb

@@ -35,3 +35,4 @@ in_ruby_version("jruby") do
   require 'about_java_interop'
 end
 require 'about_extra_credit'
+require 'about_sensei'

src/about_sensei.rb

@@ -0,0 +1,141 @@
+require File.expand_path(File.dirname(__FILE__) + '/edgecase')
+
+class Sensei
+  def observe(step)
+    # Step Protocol: step.passed? | step.failure | step.koan_file | step.name
+    # WRITE THIS CODE
+    #--
+    @pass_count ||= 0
+    if step.passed?
+      @pass_count += 1 
+      "#{step.koan_file.class.to_s}##{step.name} has expanded your awareness."
+    else
+      @failure = step.failure
+      "#{step.koan_file.class.to_s}##{step.name} has damaged your karma."
+    end
+    #++
+  end
+
+  def pass_count
+    # WRITE THIS CODE
+    #--
+    @pass_count
+    #++
+  end
+
+  def failed?
+    # WRITE THIS CODE
+    #--
+    ! @failure.nil?
+    #++
+  end
+
+  def instruct
+    # WRITE THIS CODE
+    #--
+      if failed?
+        "You have not yet reached enlightenment. You have passed #{pass_count} steps."
+      else
+        "The student has become the master"
+      end
+    #++
+  end
+end
+
+def student_passes_test
+  assert true  # DO NOT CHANGE YOUR STUDENT'S ANSWER
+end
+
+def student_fails_test
+  assert false # DO NOT CHANGE YOUR STUDENT'S ANSWER
+end
+
+class AboutSensei < EdgeCase::Koan
+  def test_sensei_comments_about_expanded_awareness
+    you = Sensei.new
+    student_step = EdgeCase::Koan.new(:student_passes_test, self)
+    student_meditation = student_step.meditate
+    observation = you.observe(student_meditation)
+    assert_equal "AboutSensei#student_passes_test has expanded your awareness.", observation
+  end
+
+  def test_sensei_comments_about_damaged_karma
+    you = Sensei.new
+    student_step = EdgeCase::Koan.new(:student_fails_test, self)
+    student_meditation = student_step.meditate
+    observation = you.observe(student_meditation)
+    assert_equal "AboutSensei#student_fails_test has damaged your karma.", observation
+  end
+
+  def test_sensei_counts_passed_steps
+    you = Sensei.new
+    student_steps = [EdgeCase::Koan.new(:student_passes_test, self),
+                     EdgeCase::Koan.new(:student_passes_test, self),
+                     EdgeCase::Koan.new(:student_passes_test, self),
+                     EdgeCase::Koan.new(:student_passes_test, self),
+                     EdgeCase::Koan.new(:student_fails_test, self)]
+    student_steps.each do |step|
+      you.observe step.meditate
+    end
+    assert_equal 4, you.pass_count
+  end
+
+  def test_sensei_reports_failed_true
+    you = Sensei.new
+    student_steps = [EdgeCase::Koan.new(:student_passes_test, self),
+                     EdgeCase::Koan.new(:student_fails_test, self)]
+    student_steps.each do |step|
+      you.observe step
+    end
+    assert you.failed?
+  end
+
+  def test_sensei_reports_failed_true
+    you = Sensei.new
+    student_steps = [EdgeCase::Koan.new(:student_passes_test, self),
+                     EdgeCase::Koan.new(:student_passes_test, self)]
+    student_steps.each do |step|
+      you.observe step
+    end
+    assert ! you.failed?
+  end
+
+  def test_sensei_shows_beginning_progress
+    you = Sensei.new
+    student_steps = [EdgeCase::Koan.new(:student_fails_test, self),
+                     EdgeCase::Koan.new(:student_fails_test, self),
+                     EdgeCase::Koan.new(:student_fails_test, self),
+                     EdgeCase::Koan.new(:student_fails_test, self),
+                     EdgeCase::Koan.new(:student_fails_test, self)]
+    student_steps.each do |step|
+      you.observe step.meditate
+    end
+    instructions = you.instruct
+    assert_match "You have not yet reached enlightenment", instructions
+    assert_match "You have passed 0 steps", instructions
+  end
+
+  def test_sensei_shows_partial_progress
+    you = Sensei.new
+    student_steps = [EdgeCase::Koan.new(:student_passes_test, self),
+                     EdgeCase::Koan.new(:student_passes_test, self),
+                     EdgeCase::Koan.new(:student_passes_test, self),
+                     EdgeCase::Koan.new(:student_fails_test, self),
+                     EdgeCase::Koan.new(:student_fails_test, self)]
+    student_steps.each do |step|
+      you.observe step.meditate
+    end
+    instructions = you.instruct
+    assert_match "You have not yet reached enlightenment", instructions
+    assert_match "You have passed 3 steps", instructions
+  end
+
+  def test_sensei_congratulates_student
+    you = Sensei.new
+    # run all of Ruby Koans with you as the sensei
+    EdgeCase::ThePath.new(you).walk
+
+    instructions = you.instruct
+    assert_match "The student has become the master", instructions
+  end
+end

src/edgecase.rb

@@ -124,7 +124,10 @@ module EdgeCase
       @pass_count = 0
       @failure = nil
       @failed_test = nil
-      @observations = []
+    end
+
+    def observations
+      @observations ||= []
     end
 
     PROGRESS_FILE_NAME = '.path_progress'
@@ -154,13 +157,13 @@ module EdgeCase
       if step.passed?
         @pass_count += 1
         if @pass_count > progress.last.to_i
-          @observations << Color.green("#{step.koan_file}##{step.name} has expanded your awareness.")
+          observations << Color.green("#{step.koan_file}##{step.name} has expanded your awareness.")
         end
       else
         @failed_test = step
         @failure = step.failure
         add_progress(@pass_count)
-        @observations << Color.red("#{step.koan_file}##{step.name} has damaged your karma.")
+        observations << Color.red("#{step.koan_file}##{step.name} has damaged your karma.")
         throw :edgecase_exit
       end
     end
@@ -175,7 +178,7 @@ module EdgeCase
 
     def instruct
       if failed?
-        @observations.each{|c| puts c }
+        observations.each{|c| puts c }
         encourage
         guide_through_error
         a_zenlike_statement
@@ -203,22 +206,23 @@ module EdgeCase
     end
 
     def end_screen
-      if EdgeCase.simple_output
+      screen = if EdgeCase.simple_output
-        boring_end_screen
+        end_message
       else
         artistic_end_screen
       end
+      puts screen
     end
 
-    def boring_end_screen
+    def end_message
-      puts "Mountains are again merely mountains"
+      "The student has become the master"
     end
 
     def artistic_end_screen
       "JRuby 1.9.x Koans"
       ruby_version = "(in #{'J' if defined?(JRUBY_VERSION)}Ruby #{defined?(JRUBY_VERSION) ? JRUBY_VERSION : RUBY_VERSION})"
       ruby_version = ruby_version.side_padding(54)
-        completed = <<-ENDTEXT
+      return <<-ENDTEXT
                                   ,,   ,  ,,
                                 :      ::::,    :::,
                    ,        ,,: :::::::::::::,,  ::::   :  ,
@@ -229,7 +233,7 @@ module EdgeCase
       ,:     , ,:,,:                                       :::::::::::::
      ::,:   ,,:::,                                           ,::::::::::::,
     ,:::, :,,:::                                               ::::::::::::,
-   ,::: :::::::,       Mountains are again merely mountains     ,::::::::::::
+   ,::: :::::::,#{        end_message.side_padding 48          },::::::::::::
    :::,,,::::::                                                   ::::::::::::
  ,:::::::::::,                                                    ::::::::::::,
  :::::::::::,                                                     ,::::::::::::
@@ -253,7 +257,6 @@ module EdgeCase
                       ,::::                         , ,,
                                                   ,,,
 ENDTEXT
-        puts completed
     end
 
     def encourage
@@ -430,21 +433,26 @@ ENDTEXT
   end
 
   class ThePath
+    def initialize(sensei=nil)
+      @sensei = sensei || Sensei.new
+    end
+
     def walk
-      sensei = EdgeCase::Sensei.new
       each_step do |step|
-        sensei.observe(step.meditate)
+        @sensei.observe(step.meditate)
       end
-      sensei.instruct
+      @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|
+          if @sensei.instance_of?(EdgeCase::Sensei) || (koan.to_s != "AboutSensei")
-            step = koan.new(method_name, koan.to_s, koan_index+1, step_count+=1)
+            koan.testmethods.each do |method_name|
-            yield step
+              step = koan.new(method_name, koan.to_s, koan_index+1, step_count+=1)
+              yield step
+            end
           end
         end
       }

src/path_to_enlightenment.rb

@@ -35,3 +35,4 @@ in_ruby_version("jruby") do
   require 'about_java_interop'
 end
 require 'about_extra_credit'
+require 'about_sensei'