Overlord levelup solution

@jmmastey @bwthomas
instead of using this fail method you created, look into using Rspec matchers. For example, this one could be written:
`expect(codeInputId(which_code)).value).to eq(codeval)`

For reference, check here: https://www.relishapp.com/rspec/rspec-expectations/docs/built-in-matchers