moves Class#reachable? to Module#reachable?, bases implementation on anonymous? and constantize, and adds test coverage

1 files changed, 3 insertions, 6 deletions

diff --git a/activesupport/lib/active_support/core_ext/class/subclasses.rb b/activesupport/lib/active_support/core_ext/class/subclasses.rb
index c166ce8079..bbd8f5aef6 100644
--- a/activesupport/lib/active_support/core_ext/class/subclasses.rb
+++ b/activesupport/lib/active_support/core_ext/class/subclasses.rb
@@ -1,4 +1,5 @@
-require 'active_support/core_ext/object/blank'
+require 'active_support/core_ext/module/anonymous'
+require 'active_support/core_ext/module/reachable'
 
 class Class #:nodoc:
   # Returns an array with the names of the subclasses of +self+ as strings.
@@ -8,10 +9,6 @@ class Class #:nodoc:
     Class.subclasses_of(self).map { |o| o.to_s }
   end
 
-  def reachable? #:nodoc:
-    eval("defined?(::#{self}) && ::#{self}.equal?(self)")
-  end
-
   # Rubinius
   if defined?(Class.__subclasses__)
     def descendents
@@ -51,7 +48,7 @@ class Class #:nodoc:
   def self.subclasses_of(*superclasses) #:nodoc:
     subclasses = []
     superclasses.each do |klass|
-      subclasses.concat klass.descendents.select {|k| k.name.blank? || k.reachable?}
+      subclasses.concat klass.descendents.select {|k| k.anonymous? || k.reachable?}
     end
     subclasses
   end