fix: Fixture validation test infrastructure failure blocking all PRs

[ashleyshaw]

---

file_type: "issue"
issue_type: "bug"
area: "tests"
priority: "critical"
component: "ci"
status: "needs-triage"

Build/CI Summary

The fixture validation test fails with infrastructure errors when running the validate check. This is a pre-existing issue blocking all PRs regardless of code quality.

Problem Statement

Test fixture validation setup issue — validation tool cannot load or validate fixtures, causing both validate and check workflows to fail.

Impact:

• All PRs fail validate check
• Cascading failure: blocks check workflow (depends on validate)
• Prevents all code changes from merging
• Not caused by PR code — systemic infrastructure issue

Symptoms:

• Validate check fails in ~6-8 seconds
• Check workflow fails (depends on validate)
• Consistent failure across all PR commits
• Infrastructure error, not code quality issue

Steps / Checklist

• Review fixture validation test setup
• Check if fixture schema definitions exist
• Verify validation tool is properly configured
• Check test fixtures are present and valid
• Verify test environment setup
• Check for missing dependencies
• Review validate workflow configuration
• Test fixture validation locally
• Test with sample PR to verify fix

Acceptance Criteria

• Fixture validation test passes
• Validate check passes on test PR
• Check workflow passes (no longer blocked by validate)
• No schema or fixture errors in logs
• Error messages are clear and actionable
• Consistent behavior across multiple runs
• All dependent CI checks unblocked

Additional Context

Affected Workflows:

• Validate workflow
• Check workflow (depends on validate)
• All PRs (validate check gates merge)

Dependent Checks:

• Check workflow (blocks until validate passes)
• All Checks Passed meta-check

Related Issues:

• PR feat: Phase 2 - Planner Agent GitHub API Integration #634 (planner agent enhancements) blocked by this
• Issues fix: Test suite ESM/TextDecoder compatibility issue blocking all PRs #642, fix: Planner agent schema validation infrastructure failure #643 (other infrastructure failures)

Test Files/Fixtures:

• Likely in scripts/agents/__tests__/ or .schemas/
• Fixture schema definitions needed

References

• Jest Testing Documentation
• Test Structure Guidelines
• CONTRIBUTING.md
• Coding Standards

---

Definition of Ready (DoR)

• Build/CI goal and scope defined
• Checklist prepared
• Estimate added

Definition of Done (DoD)

• All checklist and acceptance criteria completed
• Validate workflow passes
• Check workflow passes
• CI stable after fix
• Approved by maintainer

[linear-code]

LS-822

[ashleyshaw]

✅ RESOLVED in PR #678 (commit 1b2f491)

The fixture validation test infrastructure failure was a downstream effect of issue #646 (TextDecoder ESM compatibility). Once the Jest setup file was properly configured with TextDecoder polyfills, the fixture validation tests passed.

Current Status:

• All 56 test suites passing
• All 452 tests passing
• Fixture validation: operational
• Validate workflow: unblocked
• Check workflow: unblocked

---

Generated by Claude Code