Following on from this comment on issue #172.
I'm writing tests for code that uses controller.request.path_parameters, but I have to use symbolize_keys in order to stay 'compatible' with RSpec:
controller.request.path_parameters.symbolize_keys[:action]
symbolize_keys is an ok workaround, but I really think that the path_parameters should match those in the real Rails environment.
If you think it's a good idea, I'll change it to have symbols as keys, and send a pull request.