Create Unit Tests of `shellName()` and Any Util Code

[ReedClanton]

Description

100% coverage of shellName() and any util code. Doesn't include CI/CD implementation (that's covered by #33).

High Level Solution Description

100% unit test coverage of relevant CUT and any util code using shellspec.

Alternative Solution(s)

None

Blocked By

• Convert Unit Test Library from bash_unit to shellspec #23
• shellName() Revamp #54

Blocking

• CI/CD | Run shellName() Unit Tests #33

Related Issue(s)

• Convert Unit Test Library from bash_unit to shellspec #23
• CI/CD | Run shellName() Unit Tests #33
• Create Unit Tests of log() and Any Util Code #36
• Create Unit Tests of output() and Any Util Code #38
• Create Unit Tests of backUp() and Any Util Code #39
• Create Unit Tests of checkRequiredOpts() and Any Util Code #40

Additional Context

Unit tests should be relatively simple due to the simplicity of shellName().