1 files changed, 33 insertions, 0 deletions
diff --git a/spec/ruby/core/module/method_undefined_spec.rb b/spec/ruby/core/module/method_undefined_spec.rb
new file mode 100644
index 0000000000..a94388fe0a
--- /dev/null
+++ b/spec/ruby/core/module/method_undefined_spec.rb
@@ -0,0 +1,33 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+describe "Module#method_undefined" do
+  it "is a private instance method" do
+    Module.should have_private_instance_method(:method_undefined)
+  end
+
+  it "returns nil in the default implementation" do
+    Module.new do
+      method_undefined(:test).should == nil
+    end
+  end
+
+  it "is called when a method is undefined from self" do
+    begin
+      Module.new do
+        def self.method_undefined(name)
+          $method_undefined = name
+        end
+
+        def test
+          "test"
+        end
+        undef_method :test
+      end
+
+      $method_undefined.should == :test
+    ensure
+      $method_undefined = nil
+    end
+  end
+end