fix migration tests

[mchenani]

Fix migration tests by renaming migration directories to remove the -0000 suffix across xmtp_db migration pairs

Rename multiple migration up.sql and down.sql files to drop the -0000 segment in their directory names, keeping contents unchanged to align test expectations.

📍Where to Start

Start by reviewing the directory rename for xmtp_db/migrations/2025-10-28-175920_update_conversation_list_for_unknown_content_types/up.sql and its paired down.sql to confirm naming consistency across migrations.

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Macroscope summarized 823ba24.

[claude]

Claude finished @mchenani's task —— View job

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Code Review Complete ✅

Review Date: December 16, 2025, 19:22 UTC

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Summary

This PR fixes migration directory naming by removing the -0000 suffix from four migration pairs. The changes are pure directory renames with no content modifications (R100 = 100% identical content).

Analysis

What Changed:

• 2025-10-28-175920-0000_update_conversation_list_for_unknown_content_types/ → 2025-10-28-175920_update_conversation_list_for_unknown_content_types/
• 2025-11-14-185054-0000_add_dm_id_index/ → 2025-11-14-185054_add_dm_id_index/
• 2025-11-25-213223-0000_make_icebox_depending_fields_non_null/ → 2025-11-25-213223_make_icebox_depending_fields_non_null/
• 2025-12-08-160215-0000_drop_events_table/ → 2025-12-08-160215_drop_events_table/

Why This Fix Works:

1. Diesel migrations use directory names as version identifiers
2. The -0000 suffix was likely added accidentally (possibly by a migration generation tool)
3. The standard Diesel naming convention is YYYY-MM-DD-HHMMSS_description without any suffix
4. All other migrations in the directory follow this standard format (see: 2025-11-15-232503_add_inserted_at_ns_to_group_messages/)

Migration Test Framework:
The codebase has comprehensive migration tests in db_tools/src/tasks/migrations.rs that:

• Test rollback/rerun cycles (lines 73-98)
• Verify migration ordering (lines 101-116)
• Test specific migration application (lines 119-169)
• Validate migration status tracking (lines 172-249)

These tests rely on matching migration names with applied versions by filtering numeric characters only (line 60-68), so the -0000 suffix would have caused mismatches.

✅ Approval Factors

1. Correct Fix: Aligns with Diesel's standard naming convention
2. No Code Changes: Pure renames with identical content (0 additions, 0 deletions)
3. Consistent Pattern: All four renames follow the same pattern
4. Low Risk: Cannot introduce bugs since SQL content is unchanged
5. Test Alignment: Migration tests use numeric matching that works correctly with standard naming

No Issues Found

• No security concerns (no code changes)
• No performance impact (directory names only)
• No test coverage gaps (existing migration tests cover this)
• No best practice violations (fixes a naming convention issue)

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Recommendation: ✅ Approve and merge

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.93%. Comparing base (ff5b9a5) to head (ef8261d).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2958   +/-   ##
=======================================
  Coverage   73.92%   73.93%           
=======================================
  Files         407      407           
  Lines       52086    52086           
=======================================
+ Hits        38506    38508    +2     
+ Misses      13580    13578    -2     

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