v1.5.1 — Phases 2-3 Test Coverage Completion

Phase 3 Complete: Token and Tokenizer Coverage Enhancement#

Released - PR #88

Test Coverage Enhancement - Phase 3 (Token, Tokenizer)#

• Comprehensive Test Suite: Added 2 new test files with 378 lines of test code
• Perfect Token Coverage Achieved: Token package reaches 100% coverage ⭐
• Coverage Achievements:
  • Token Package: 59.1% → 100.0% (+40.9%) - Perfect Coverage!
  • Tokenizer Package: 69.1% → 76.1% (+7.0%) - Target Exceeded!
• Zero Race Conditions: All tests pass with race detection enabled

New Test Files Created - Phase 3#

• pkg/sql/token/coverage_enhancement_test.go (332 lines)
  • IsKeyword(), IsOperator(), IsLiteral() - all classification methods
  • 95+ subtests covering all token types (25 keywords, 7 operators, 6 literals)
  • Edge cases: empty types, custom tokens, case sensitivity
  • Token alias testing: EQ/EQUAL, NEQ/NOT_EQ
  • Method combinations: TRUE/FALSE as both keywords and literals
• pkg/sql/tokenizer/coverage_enhancement_test.go (310 lines)
  • Buffer pool operations (NewBufferPool, Get, Put, Grow)
  • Error handling (7 error creation and formatting functions)
  • Position tracking (Location, AdvanceN)
  • Tokenizer operations (NewWithKeywords, Reset)
  • 25+ subtests with comprehensive edge case coverage

Combined Phase 1 + Phase 2 + Phase 3 Impact#

• 8 packages with comprehensive coverage improvements
• 4,823 lines of production-grade test code
• 3 packages at perfect 100% coverage: Models, Keywords, Token
• Zero race conditions across entire codebase
• Production-ready reliability validated

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Phase 2 Complete: Keywords, Errors, and AST Coverage Enhancement#

Released - PR #87

Test Coverage Enhancement - Phase 2 (Keywords, Errors, AST)#

• Comprehensive Test Suite: Added 3 new test files with 1,351 lines of test code
• Perfect Coverage Achieved: Keywords package reaches 100% coverage
• Coverage Achievements:
  • Keywords Package: 92.8% → 100.0% (+7.2%) - Perfect Coverage
  • Errors Package: 83.8% → 95.6% (+11.8%) - Exceeded Target
  • AST Package: 73.7% → 74.4% (+0.7%) - Marker functions covered
• Documentation Cleanup: Removed 2,538 lines of obsolete/redundant documentation
• Archived Historical Docs: Moved outdated architecture docs to archive with explanation

New Test Files Created - Phase 2#

• pkg/sql/keywords/coverage_enhancement_test.go (405 lines)
  • All 5 SQL dialects tested (Generic, MySQL, PostgreSQL, SQLite, Unknown)
  • Case-sensitive and case-insensitive mode coverage
  • Edge cases: empty strings, whitespace, special characters
  • 9 comprehensive test functions
• pkg/sql/ast/marker_functions_test.go (387 lines)
  • 14 statement types + 16 expression types + 4 ALTER operations
  • Interface compliance validation
  • Edge cases with zero-value structs
  • 5 test functions with 50+ subtests
• pkg/errors/coverage_enhancement_test.go (559 lines)
  • 9 advanced error builder functions
  • 5 suggestion helper functions
  • Integration and edge case validation
  • 4 test suites with 50+ subtests

Documentation Improvements#

• Removed 5 obsolete LLM-generated session summaries (2,538 lines)
• Archived 2 outdated architecture/performance docs
• Created PHASE2_COVERAGE_SUMMARY.md with comprehensive documentation
• Added archive/historical-architecture-docs/README.md to explain historical context

Combined Phase 1 + Phase 2 Impact#

• 6 packages with comprehensive coverage improvements
• 4,445 lines of production-grade test code
• Zero race conditions across entire codebase
• Production-ready reliability validated