Expands parser/lexer tests to test future possible keywords

[johnedquinn]

Relevant Issues

• Relevant to Adds non-reserved keywords (POC) #221

Description

• Adds tests to assert that the current identifiers of acyclic, both, domain, public', user, leading, trail, and trailing` are lexed and parsed as identifiers.
• Specifically adds more comprehensive testing to the preprocessor to add testing related to the use of the trim specification keywords.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

Base: 86.28% // Head: 86.47% // Increases project coverage by +0.19% 🎉

Coverage data is based on head (43e57f3) compared to base (a279276).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #223      +/-   ##
==========================================
+ Coverage   86.28%   86.47%   +0.19%     
==========================================
  Files          31       31              
  Lines        5074     5146      +72     
==========================================
+ Hits         4378     4450      +72     
  Misses        696      696              

Impacted Files	Coverage Δ
partiql-parser/src/lexer.rs	98.35% <100.00%> (+0.09%)	⬆️
partiql-parser/src/parse/mod.rs	95.15% <100.00%> (+0.31%)	⬆️
partiql-parser/src/preprocessor.rs	93.11% <100.00%> (+0.27%)	⬆️

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[github-actions]

Conformance comparison report

	main (a279276)	b1b2505	+/-
% Passing	12.65%	12.65%	0.00%
✅ Passing	349	349	0
❌ Failing	0	0	0
🔶 Ignored	2410	2410	0
Total Tests	2759	2759	0

Number passing in both: 349

Number failing in both: 0

Number passing in main but now fail: 0

Number failing in main but now pass: 0