removes unused method Class#remove_class

activesupport/lib/active_support/core_ext/class/removal.rb

@@ -2,35 +2,4 @@
 require 'active_support/core_ext/module/introspection'
 
 class Class #:nodoc:
-  # Removes the classes in +klasses+ from their parent module.
-  #
-  # Ordinary classes belong to some module via a constant. This method computes
-  # that constant name from the class name and removes it from the module it
-  # belongs to.
-  #
-  #   Object.remove_class(Integer) # => [Integer]
-  #   Integer                      # => NameError: uninitialized constant Integer
-  #
-  # Take into account that in general the class object could be still stored
-  # somewhere else.
-  #
-  #   i = Integer                  # => Integer
-  #   Object.remove_class(Integer) # => [Integer]
-  #   Integer                      # => NameError: uninitialized constant Integer
-  #   i.subclasses                 # => ["Bignum", "Fixnum"]
-  #   Fixnum.superclass            # => Integer
-  def remove_class(*klasses)
-    klasses.flatten.each do |klass|
-      # Skip this class if there is nothing bound to this name
-      next unless defined?(klass.name)
-
-      basename = klass.to_s.split("::").last
-      parent = klass.parent
-
-      # Skip this class if it does not match the current one bound to this name
-      next unless parent.const_defined?(basename) && klass = parent.const_get(basename)
-
-      parent.instance_eval { remove_const basename } unless parent == klass
-    end
-  end
 end

activesupport/test/core_ext/class_test.rb

@@ -17,21 +17,4 @@ class C
 end
 
 class ClassTest < Test::Unit::TestCase
-  def test_removing_class_in_root_namespace
-    assert A.is_a?(Class)
-    Class.remove_class(A)
-    assert_raise(NameError) { A.is_a?(Class) }
-  end
-
-  def test_removing_class_in_one_level_namespace
-    assert X::B.is_a?(Class)
-    Class.remove_class(X::B)
-    assert_raise(NameError) { X::B.is_a?(Class) }
-  end
-
-  def test_removing_class_in_two_level_namespace
-    assert Y::Z::C.is_a?(Class)
-    Class.remove_class(Y::Z::C)
-    assert_raise(NameError) { Y::Z::C.is_a?(Class) }
-  end
 end