variable.c: real class name

* variable.c (rb_class2name): should return real class name, not
  singleton class or iclass.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43367 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 18 insertions, 0 deletions

diff --git a/test/-ext-/class/test_class2name.rb b/test/-ext-/class/test_class2name.rb
new file mode 100644
index 0000000000..070be5a130
--- /dev/null
+++ b/test/-ext-/class/test_class2name.rb
@@ -0,0 +1,18 @@
+require 'test/unit'
+require "-test-/class"
+
+class Test_Class < Test::Unit::TestCase
+  class Test_Class2Name < superclass
+    def test_toplevel_class
+      assert_equal("Object", Bug::Class.class2name(::Object))
+    end
+
+    def test_toplevel_module
+      assert_equal("Kernel", Bug::Class.class2name(::Kernel))
+    end
+
+    def test_singleton_class
+      assert_equal("Object", Bug::Class.class2name(::Object.new.singleton_class))
+    end
+  end
+end