"""Verify the campaign_analyses migration creates the table with a unique campaign_id."""

import importlib

import sqlalchemy as sa
from alembic.migration import MigrationContext
from alembic.operations import Operations


def test_campaign_analyses_migration_creates_table(tmp_path, monkeypatch):
    engine = sa.create_engine(f"sqlite:///{tmp_path / 'analyses.db'}")

    with engine.begin() as connection:
        operations = Operations(MigrationContext.configure(connection))
        migration = importlib.import_module(
            "migrations.versions.c8f5e4b13d26_add_campaign_analyses"
        )
        monkeypatch.setattr(migration, "op", operations)
        migration.upgrade()

        inspector = sa.inspect(connection)
        assert "campaign_analyses" in inspector.get_table_names()

        columns = {c["name"] for c in inspector.get_columns("campaign_analyses")}
        assert {
            "id", "campaign_id", "status", "result",
            "model_config_id", "error", "triggered_by", "created_at", "updated_at",
        } <= columns

        uniques = inspector.get_unique_constraints("campaign_analyses")
        assert any(uc["column_names"] == ["campaign_id"] for uc in uniques)