1 files changed, 24 insertions, 0 deletions
diff --git a/spec/ruby/core/basicobject/singleton_method_undefined_spec.rb b/spec/ruby/core/basicobject/singleton_method_undefined_spec.rb
new file mode 100644
index 0000000000..4f33cc5dbe
--- /dev/null
+++ b/spec/ruby/core/basicobject/singleton_method_undefined_spec.rb
@@ -0,0 +1,24 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "BasicObject#singleton_method_undefined" do
+  before :each do
+    ScratchPad.clear
+  end
+
+  it "is a private method" do
+    BasicObject.should have_private_instance_method(:singleton_method_undefined)
+  end
+
+  it "is called when a method is removed on self" do
+    klass = Class.new
+    def klass.singleton_method_undefined(name)
+      ScratchPad.record [:singleton_method_undefined, name]
+    end
+    def klass.singleton_method_to_undefine
+    end
+    class << klass
+      undef_method :singleton_method_to_undefine
+    end
+    ScratchPad.recorded.should == [:singleton_method_undefined, :singleton_method_to_undefine]
+  end
+end