Use correct method for exception fill-in blank

.gitignore

@@ -1 +1,2 @@
 dist
+.project_env.rc

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 }
       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)

koans/about_scoring_project.rb

@@ -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)

koans/about_triangle_project_2.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 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

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 }
       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_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)

src/about_scoring_project.rb

@@ -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 +1,77 @@
+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_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?(__(:RubyConstant))
+  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_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
+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)

src/about_triangle_project_2.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 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

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'