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lmiranda 3054441630 docs: Add local lessons learned backup system

- Create docs/project-lessons-learned/ for local lesson storage
- Add INDEX.md with lesson template and index table
- Document Phase 4 dbt test syntax deprecation lesson
- Update CLAUDE.md with backup method when Wiki.js unavailable

This provides a fallback for capturing lessons learned while
Wiki.js integration is being configured.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2026-01-16 11:52:06 -05:00

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Phase 4 - dbt Test Syntax Deprecation

Context

Implementing dbt mart models with accepted_values tests for tier columns (safety_tier, income_quintile, amenity_tier) that should only contain values 1-5.

Problem

dbt 1.9+ introduced a deprecation warning for generic test arguments. The old syntax:

tests:
  - accepted_values:
      values: [1, 2, 3, 4, 5]

Produces deprecation warnings:

MissingArgumentsPropertyInGenericTestDeprecation: Arguments to generic tests should be nested under the `arguments` property.

Solution

Nest test arguments under the arguments property:

tests:
  - accepted_values:
      arguments:
        values: [1, 2, 3, 4, 5]

This applies to all generic tests with arguments, not just accepted_values.

Prevention

When writing dbt schema YAML files, always use the arguments: nesting for generic tests
Run dbt parse --no-partial-parse to catch all deprecation warnings before they become errors
Check dbt changelog when upgrading versions for breaking changes to test syntax

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