gistfile1.txt

def should_assign_attachment_named(name)
  it "should allow the assignment of #{name}" do
    @attachment_model.__send__("#{name}=") = dummy_file
    @attachment_model.should be_valid
    @attachment_model.should have(:no).errors
  end

  it 'should save the #{name} when the model is saved' do
    @attachment_model.__send__(name).should_receive(:save).once.and_return(true)
    @attachment_model.save!
  end
end