Fix #17, update code coverage for fm_cmd_utils.c

[havencarlson]

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• I reviewed the Contributing Guide.
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Describe the contribution

• part Revisit coverage, update to 100% code/branch or write issues where unreachable #17
  Updated unit tests for fm_cmd_utils.c to cover LoadOpenFileData, SearchOpenFileData, and branches.

Testing performed
Steps taken to test the contribution:

1. lcov --capture --rc lcov_branch_coverage=1 --directory build --output-file coverage_test.info
2. lcov --rc lcov_branch_coverage=1 --add-tracefile coverage_base.info --add-tracefile coverage_test.info --output-file coverage_total.info
3. genhtml coverage_total.info --branch-coverage --output-directory lcov

Expected behavior changes
no impact to behavior

System(s) tested on

• OS: Ubuntu 18.04

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[astrogeco]

@havencarlson this needs a run through clang format to fix white space. You can also fix it manually by looking at the output of the format check workflow

[skliper]

Comments apply to patterns throughout the change. Avoid UtAssert_True, UT_GetStubCount, etc in favor of the macros that standardize the report information. Ensure variables are initialized before use, etc.

[skliper]

Great work! Just a few minor updates recommended. Happy to chat if it helps.

[skliper]

Perfect, great work!

[skliper]

@astrogeco - should be ready to merge... we'll need to update the workflow allowed missed branches/lines once these are all in.

[astrogeco]

@chillfig Still need some format fixes

[astrogeco]

CCB:2022-06-15 APPROVED