Rspec Stubbing corner case

running example

~/tmp $ ruby -v
ruby 1.9.2p0 (2010-08-18 revision 29036) [x86_64-darwin10.4.0]
~/tmp $ spec -v
rspec 1.3.2
~/tmp $ spec test.rb 
..F

1)
NoMethodError in 'TestClass fails after the stub'
undefined method `foo' for #<TestClass:0x00000101180158>
test.rb:28:in `block (2 levels) in <top (required)>'

Finished in 0.046678 seconds

3 examples, 1 failure
~/tmp $ rspec -v
2.5.1
~/tmp $ rspec test.rb 
...

Finished in 0.00154 seconds
3 examples, 0 failures
~/tmp $ 

test.rb

class TestClass
end

# our use case is with a stub on a constant
TEST = TestClass.new

describe TestClass do
  it "works before the stub" do
    TestClass.send(:attr_accessor, :foo)
    TEST.foo = :baz

    TEST.foo.should == :baz

    TestClass.send(:remove_method, 'foo')
    TestClass.send(:remove_method, 'foo=')
  end

  it "has a stubbed method" do
    TEST.stub! :foo => :bar

    TEST.foo.should == :bar
  end

  it "fails after the stub" do
    TestClass.send(:attr_accessor, :foo)
    TEST.foo = :baz

    TEST.foo.should == :baz
  end
end