Fix errors in CL param tests:
Fix errors in CL param tests:

- add parser to mock parameter set
- fix variable references in tests for command line parameter parsing

maxalbert/sumatra,babsey/sumatra,apdavison/sumatra,dpad/sumatra,open-research/sumatra,open-research/sumatra,apdavison/sumatra,dpad/sumatra,maxalbert/sumatra,maxalbert/sumatra,babsey/sumatra,apdavison/sumatra,dpad/sumatra,maxalbert/sumatra,dpad/sumatra,apdavison/sumatra,babsey/sumatra,babsey/sumatra,open-research/sumatra,maxalbert/sumatra,babsey/sumatra,dpad/sumatra,apdavison/sumatra,open-research/sumatra,open-research/sumatra