[ruby-core:17126] remove ObjectSpace.each_object from test/unit

I wrote a patch to remove ObjectSpace.each_object from test/unit.

How about this?

Index: lib/test/unit/autorunner.rb
===================================================================
--- lib/test/unit/autorunner.rb	(revision 16852)
+++ lib/test/unit/autorunner.rb	(working copy)
@@ -14,8 +14,8 @@ module Test
       
       def self.standalone?
         return false unless("-e" == $0)
-        ObjectSpace.each_object(Class) do |klass|
-          return false if(klass < TestCase)
+        TestCase::DECENDANT_CLASSES.each do |klass|
+          return false
         end
         true
       end
Index: lib/test/unit/collector/dir.rb
===================================================================
--- lib/test/unit/collector/dir.rb	(revision 16852)
+++ lib/test/unit/collector/dir.rb	(working copy)
@@ -10,11 +10,11 @@ module Test
         attr_reader :pattern, :exclude
         attr_accessor :base
 
-        def initialize(dir=::Dir, file=::File, object_space=::ObjectSpace, req=nil)
+        def initialize(dir=::Dir, file=::File, object_space=nil, req=nil)
           super()
           @dir = dir
           @file = file
-          @object_space = object_space
+          # object_space is ignored.
           @req = req
           @pattern = []
           @exclude = []
@@ -43,8 +43,8 @@ module Test
 
         def find_test_cases(ignore=[])
           cases = []
-          @object_space.each_object(Class) do |c|
-            cases << c if(c < TestCase && !ignore.include?(c))
+          TestCase::DECENDANT_CLASSES.each do |c|
+            cases << c if !ignore.include?(c)
           end
           ignore.concat(cases)
           cases
Index: lib/test/unit/collector/objectspace.rb
===================================================================
--- lib/test/unit/collector/objectspace.rb	(revision 16852)
+++ lib/test/unit/collector/objectspace.rb	(working copy)
@@ -10,20 +10,17 @@ module Test
       class ObjectSpace
         include Test::Unit::Collector
         
-        NAME = 'collected from the ObjectSpace'
+        NAME = 'collected from the subclasses of TestSuite'
         
-        def initialize(source=::ObjectSpace)
+        def initialize
           super()
-          @source = source
         end
         
         def collect(name=NAME)
           suite = TestSuite.new(name)
           sub_suites = []
-          @source.each_object(Class) do |klass|
-            if(Test::Unit::TestCase > klass)
-              add_suite(sub_suites, klass.suite)
-            end
+          TestCase::DECENDANT_CLASSES.each do |klass|
+            add_suite(sub_suites, klass.suite)
           end
           sort(sub_suites).each{|s| suite << s}
           suite
Index: lib/test/unit/testcase.rb
===================================================================
--- lib/test/unit/testcase.rb	(revision 16852)
+++ lib/test/unit/testcase.rb	(working copy)
@@ -34,6 +34,11 @@ module Test
       PASSTHROUGH_EXCEPTIONS = [NoMemoryError, SignalException, Interrupt,
                                 SystemExit]
 
+      DECENDANT_CLASSES = []
+      def self.inherited(decendant)
+        DECENDANT_CLASSES << decendant
+      end
+
       # Creates a new instance of the fixture for running the
       # test represented by test_method_name.
       def initialize(test_method_name)
-- 
Tanaka Akira