1 files changed, 23 insertions, 0 deletions
diff --git a/spec/ruby/core/class/to_s_spec.rb b/spec/ruby/core/class/to_s_spec.rb
new file mode 100644
index 0000000000..693517f0da
--- /dev/null
+++ b/spec/ruby/core/class/to_s_spec.rb
@@ -0,0 +1,23 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+
+describe "Class#to_s" do
+  it 'regular class returns same name as Module#to_s' do
+    String.to_s.should == 'String'
+  end
+
+  describe 'singleton class' do
+    it 'for modules includes module name' do
+      CoreClassSpecs.singleton_class.to_s.should == '#<Class:CoreClassSpecs>'
+    end
+
+    it 'for classes includes class name' do
+      CoreClassSpecs::Record.singleton_class.to_s.should == '#<Class:CoreClassSpecs::Record>'
+    end
+
+    it 'for objects includes class name and object ID' do
+      obj = CoreClassSpecs::Record.new
+      obj.singleton_class.to_s.should =~ /#<Class:#<CoreClassSpecs::Record:0x[0-9a-f]+>>/
+    end
+  end
+end