Resolve static analysis warnings in unit tests

[skliper]

Checklist (Please check before submitting)

• [x] I reviewed the Contributing Guide.
• [x] I reviewed the CF README.md file to see if the feature is in the major future work.
• [x] I performed a cursory search to see if the feature request is relevant, not redundant, nor in conflict with other tickets.

Is your feature request related to a problem? Please describe. Various static analysis warnings observed in unit tests (license restricts publishing)

Describe the solution you'd like Fix

Describe alternatives you've considered None

Additional context None

Requester Info Jacob Hageman - NASA/GSFC