Merged src directory with existing koans.

src/about_arrays.rb

@@ -42,7 +42,6 @@ class AboutArrays < EdgeCase::Koan
     assert_equal __([]), array[4,0]
     assert_equal __([]), array[4,100]
     assert_equal __(nil), array[5,0]
-    assert_equal __(nil), array[5,0]
   end
 
   def test_arrays_and_ranges
@@ -57,7 +56,7 @@ class AboutArrays < EdgeCase::Koan
 
     assert_equal __([:peanut, :butter, :and]), array[0..2]
     assert_equal __([:peanut, :butter]), array[0...2]
-    assert_equal ([:and, :jelly]), array[2..-1]
+    assert_equal __([:and, :jelly]), array[2..-1]
   end
 
   def test_pushing_and_popping_arrays

src/about_asserts.rb

@@ -7,13 +7,13 @@ class AboutAsserts < EdgeCase::Koan
 
   # We shall contemplate truth by testing reality, via asserts.
   def test_assert_truth
-    assert __(true)             # This should be true
+    assert true                 # This should be true
   end
 
   # Enlightenment may be more easily achieved with appropriate
   # messages.
   def test_assert_with_message
-    assert __(true), "This should be true -- Please fix this"
+    assert false, "This should be true -- Please fix this"
   end
 
   # To understand reality, we must compare our expectations against

src/about_class_methods.rb

@@ -19,11 +19,11 @@ class AboutClassMethods < EdgeCase::Koan
 
   def test_objects_have_methods
     fido = Dog.new
-    assert_equal __(45), fido.methods.size
+    assert_equal __(44), fido.methods.size
   end
 
   def test_classes_have_methods
-    assert_equal __(80), Dog.methods.size
+    assert_equal __(79), Dog.methods.size
   end
 
   def test_you_can_define_methods_on_individual_objects
@@ -34,9 +34,12 @@ class AboutClassMethods < EdgeCase::Koan
     assert_equal __(:fidos_wag), fido.wag
   end
 
-  def test_other_objects_are_unaffected_by_these_singleton_methods
+  def test_other_objects_are_not_affected_by_these_singleton_methods
     fido = Dog.new
     rover = Dog.new
+    def fido.wag
+      :fidos_wag
+    end
 
     assert_raise(___(NoMethodError)) do
       rover.wag
@@ -45,24 +48,24 @@ class AboutClassMethods < EdgeCase::Koan
 
   # ------------------------------------------------------------------
   
-  def Dog.bark
-    :class_level_bark
-  end
-
-  class Dog
-    def bark
-      :instance_level_bark
+  class Dog2
+    def wag
+      :instance_level_wag
     end
   end
 
+  def Dog2.wag
+    :class_level_wag
+  end
+
   def test_since_classes_are_objects_you_can_define_singleton_methods_on_them_too
-    assert_equal __(:class_level_bark), Dog.bark
+    assert_equal __(:class_level_wag), Dog2.wag
   end
 
   def test_class_methods_are_independent_of_instance_methods
-    fido = Dog.new
-    assert_equal __(:instance_level_bark), fido.bark
-    assert_equal __(:class_level_bark), Dog.bark
+    fido = Dog2.new
+    assert_equal __(:instance_level_wag), fido.wag
+    assert_equal __(:class_level_wag), Dog2.wag
   end
 
   # ------------------------------------------------------------------
@@ -155,7 +158,7 @@ class AboutClassMethods < EdgeCase::Koan
   #   end
   #
   # Which do you prefer and why?
-  # Are there times you might prefer the other way?
+  # Are there times you might prefer one over the other?
 
   # ------------------------------------------------------------------
 

src/about_methods.rb

@@ -79,7 +79,7 @@ class AboutMethods < EdgeCase::Koan
   def method_with_explicit_return
     :a_non_return_value
     return :return_value
-    :anoher_non_return_value
+    :another_non_return_value
   end
 
   def test_method_with_explicit_return

src/about_scoring_project.rb

@@ -25,7 +25,7 @@ require 'edgecase'
 # score([3,4,5,3,3]) => 350 points
 # score([1,5,1,2,4]) => 250 points
 #
-# More scoing examples are given in the tests below:
+# More scoring examples are given in the tests below:
 #
 # Your goal is to write the score method.
 

src/about_strings.rb

@@ -128,7 +128,7 @@ EOS
     assert_equal __('The value is #{value}'), string
   end
 
-  def test_any_ruby_expression_my_be_interpolated
+  def test_any_ruby_expression_may_be_interpolated
     string = "The square root of 5 is #{Math.sqrt(5)}"
     assert_equal __("The square root of 5 is 2.23606797749979"), string
   end

src/about_triangle_project_2.rb

@@ -3,7 +3,7 @@ require 'edgecase'
 # You need to write the triangle method in the file 'triangle.rb'
 require 'triangle.rb'
 
-class AboutTriangleAssignment < EdgeCase::Koan
+class AboutTriangleAssignment2 < 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