Object#copy_instance_variables_from Ruby 1.9 compat

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@7654 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activesupport/lib/active_support/core_ext/object.rb

@@ -1,2 +1,3 @@
 require File.dirname(__FILE__) + '/object/extending'
-require File.dirname(__FILE__) + '/object/misc'
+require File.dirname(__FILE__) + '/object/instance_variables'
+require File.dirname(__FILE__) + '/object/misc'

activesupport/lib/active_support/core_ext/object/extending.rb

@@ -24,25 +24,11 @@ class Object
     ancestors = class << self; ancestors end
     ancestors.select { |mod| mod.class == Module } - [ Object, Kernel ]
   end
-  
-  def copy_instance_variables_from(object, exclude = []) #:nodoc:
-    exclude += object.protected_instance_variables if object.respond_to? :protected_instance_variables
-    
-    instance_variables = object.instance_variables - exclude.map { |name| name.to_s }
-    instance_variables.each { |name| instance_variable_set(name, object.instance_variable_get(name)) }
-  end
-  
+
   def extend_with_included_modules_from(object) #:nodoc:
     object.extended_by.each { |mod| extend mod }
   end
 
-  def instance_values #:nodoc:
-    instance_variables.inject({}) do |values, name|
-      values[name[1..-1]] = instance_variable_get(name)
-      values
-    end
-  end
-
   unless defined? instance_exec # 1.9
     module InstanceExecMethods #:nodoc:
     end

activesupport/lib/active_support/core_ext/object/instance_variables.rb

@@ -5,4 +5,18 @@ class Object
       instance_variables.include?(variable.to_s)
     end
   end
+
+  def instance_values #:nodoc:
+    instance_variables.inject({}) do |values, name|
+      values[name.to_s[1..-1]] = instance_variable_get(name)
+      values
+    end
+  end
+
+  def copy_instance_variables_from(object, exclude = []) #:nodoc:
+    exclude += object.protected_instance_variables if object.respond_to? :protected_instance_variables
+
+    vars = object.instance_variables.map(&:to_s) - exclude.map(&:to_s)
+    vars.each { |name| instance_variable_set(name, object.instance_variable_get(name)) }
+  end
 end

activesupport/test/core_ext/object_and_class_ext_test.rb

@@ -65,7 +65,7 @@ class ClassExtTest < Test::Unit::TestCase
 
   def test_subclasses_of_should_not_return_removed_classes
     # First create the removed class
-    old_class = Nested.send :remove_const, :ClassL
+    old_class = Nested.class_eval { remove_const :ClassL }
     new_class = Class.new(ClassK)
     Nested.const_set :ClassL, new_class
     assert_equal "Nested::ClassL", new_class.name # Sanity check
@@ -85,7 +85,7 @@ class ClassExtTest < Test::Unit::TestCase
     assert !const_missing
     assert_equal [ Nested::ClassL ], subclasses
     
-    removed = Nested.send :remove_const, :ClassL   # keep it in memory
+    removed = Nested.class_eval { remove_const :ClassL }  # keep it in memory
     subclasses = Object.subclasses_of ClassK
     assert !const_missing
     assert subclasses.empty?
@@ -188,7 +188,7 @@ class ObjectInstanceVariableTest < Test::Unit::TestCase
     assert_equal [], @dest.instance_variables
     @dest.copy_instance_variables_from(@source)
 
-    assert_equal %w(@bar @baz), @dest.instance_variables.sort
+    assert_equal %w(@bar @baz), @dest.instance_variables.sort.map(&:to_s)
     %w(@bar @baz).each do |name|
       assert_equal @source.instance_variable_get(name).object_id,
                    @dest.instance_variable_get(name).object_id
@@ -197,7 +197,7 @@ class ObjectInstanceVariableTest < Test::Unit::TestCase
 
   def test_copy_instance_variables_from_with_explicit_excludes
     @dest.copy_instance_variables_from(@source, ['@baz'])
-    assert !@dest.instance_variables.include?('@baz')
+    assert !@dest.instance_variable_defined?('@baz')
     assert_equal 'bar', @dest.instance_variable_get('@bar')
   end
 
@@ -210,8 +210,8 @@ class ObjectInstanceVariableTest < Test::Unit::TestCase
     end
 
     @dest.copy_instance_variables_from(@source)
-    assert !@dest.instance_variables.include?('@bar')
-    assert !@dest.instance_variables.include?('@quux')
+    assert !@dest.instance_variable_defined?('@bar')
+    assert !@dest.instance_variable_defined?('@quux')
     assert_equal 'baz', @dest.instance_variable_get('@baz')
   end