Add Path tests

[w84thesun]

Description

This PR refs #803.

Readiness checklist

• I added tests for new functionality or bugfixes.
• I ran task all, and it passed.
• I added/updated comments for both exported and unexported top-level declarations (functions, types, etc).
• I checked comments rendering with task godocs.
• (for maintainers only) I set Reviewers, Assignee, Labels, Project and project's Sprint fields.
• I marked all done items in this checklist.

[codecov]

Codecov Report

Merging #936 (f8fcbf8) into main (1b9a571) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #936      +/-   ##
==========================================
- Coverage   60.04%   60.01%   -0.03%     
==========================================
  Files         224      224              
  Lines       10272    10272              
==========================================
- Hits         6168     6165       -3     
- Misses       3395     3402       +7     
+ Partials      709      705       -4     

Impacted Files	Coverage Δ
internal/handlers/pg/pgdb/collections.go	54.86% <0.00%> (-5.31%)	⬇️
internal/util/version/version.go	55.00% <0.00%> (-5.00%)	⬇️
internal/clientconn/listener.go	76.04% <0.00%> (-3.13%)	⬇️
internal/wire/msg_header.go	69.04% <0.00%> (-2.39%)	⬇️
internal/wire/msg_body.go	36.50% <0.00%> (-1.59%)	⬇️
internal/handlers/pg/msg_dbstats.go	72.09% <0.00%> (+6.97%)	⬆️
internal/types/path.go	92.63% <0.00%> (+8.42%)	⬆️

Flag	Coverage Δ
integration	62.25% <ø> (-0.25%)	⬇️
mongodb	18.90% <ø> (-0.04%)	⬇️
pg	62.15% <ø> (-0.25%)	⬇️
tigris	49.75% <ø> (ø)
unit	24.90% <ø> (+0.01%)	⬆️

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