Fixes incorrect error messages for parameters and tops-up test coverage
Spec coverage increase by 22%:
Coverage report generated for RSpec to /Users/petersouter/projects/voxpupuli-windowsfeature/coverage. 49 / 70 LOC (70.0%) covered.
...
Coverage report generated for RSpec to /Users/petersouter/projects/voxpupuli-windowsfeature/coverage. 65 / 70 LOC (92.86%) covered.
Fixes incorrect error messages for parameters and tops-up test coverage
Spec coverage increase by 22%: