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FabledCurator/tests/test_migration_0003.py
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feat(ml): drop image_record.tagger_predictions — image_prediction is sole store (#768 step 3)
Read cutover verified in prod (suggestions + allowlist read image_prediction;
backfill complete at 908k rows / 51k images). Removes the old JSON column and
everything that fed it:

- ImageRecord.tagger_predictions column removed; migration 0046 DROPs it.
  tagger_model_version kept as the "tagged / current?" signal the backfill
  sweep reads (needs-tagging check switched to tagger_model_version IS NULL).
- tag_and_embed no longer dual-writes the JSON — image_prediction is the only
  write path.
- importer re-import reset drops the JSON line (image_prediction rows are
  already deleted on re-import).
- Retired the one-time #768 backfill task + the #764 prune task, their admin
  endpoints, and their Maintenance cards (Backfill/PrunePredictionsCard).
- Tests seed/assert via image_prediction; stale column refs removed.

Disk reclaim is NOT automatic: DROP COLUMN is a catalog change. Run
`VACUUM FULL image_record` off-hours afterward to return the ~100 GB to the OS
so DB backups go small (#739). image_prediction (~90 MB) stays in pg_dump — it's
the source of truth now.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-11 18:52:33 -04:00

59 lines
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Python

"""Smoke test for migration 0003: model classes import, schema shape correct."""
from backend.app.models import (
Base,
ImageRecord,
MLSettings,
TagAlias,
TagAllowlist,
TagReferenceEmbedding,
TagSuggestionRejection,
)
def test_new_tables_registered():
expected = {
"tag_allowlist",
"tag_suggestion_rejection",
"tag_alias",
"tag_reference_embedding",
"ml_settings",
}
assert expected.issubset(Base.metadata.tables.keys())
def test_image_record_columns_renamed():
cols = {c.name for c in ImageRecord.__table__.columns}
# tagger_predictions (the renamed wd14_predictions) was later dropped in
# migration 0046 — predictions live in image_prediction now (#768).
assert "tagger_model_version" in cols
assert "tagger_predictions" not in cols
assert "wd14_predictions" not in cols
assert "wd14_model_version" not in cols
def test_tag_alias_composite_pk():
pk_cols = {c.name for c in TagAlias.__table__.primary_key.columns}
assert pk_cols == {"alias_string", "alias_category"}
def test_ml_settings_singleton_constraint():
names = {c.name for c in MLSettings.__table__.constraints}
assert "ck_ml_settings_singleton" in names
def test_tag_reference_embedding_has_vector():
cols = {c.name for c in TagReferenceEmbedding.__table__.columns}
assert "embedding" in cols
assert "reference_count" in cols
def test_tag_allowlist_confidence_check():
names = {c.name for c in TagAllowlist.__table__.constraints}
assert "ck_tag_allowlist_confidence_range" in names
def test_tag_suggestion_rejection_pk():
pk_cols = {c.name for c in TagSuggestionRejection.__table__.primary_key.columns}
assert pk_cols == {"image_record_id", "tag_id"}