code: def test_sqlalchemy_store_detects_schema_mismatch(db_url):
      def _assert_invalid_schema(engine):
          with pytest.raises(
              MlflowException,
              match="Detected out-of-date database schema.",
          ):
              _verify_schema(engine)
  
      # Initialize an empty database & verify that we detect a schema mismatch
      engine = sqlalchemy.create_engine(db_url)
      _assert_invalid_schema(engine)
      # Create legacy tables, verify schema is still out of date
      InitialBase.metadata.create_all(engine)
      _assert_invalid_schema(engine)
      # Run each migration. Until the last one, schema should be out of date
      config = _get_alembic_config(db_url)
      script = ScriptDirectory.from_config(config)
      revisions = list(script.walk_revisions())
      revisions.reverse()
      for rev in revisions[:-1]:
          command.upgrade(config, rev.revision)
          _assert_invalid_schema(engine)
      # Run migrations, schema verification should now pass
      invoke_cli_runner(mlflow.db.commands, ["upgrade", db_url])
      _verify_schema(engine)
  
imports: import os
  import sqlite3
  import pytest
  import sqlalchemy
  from alembic import command
  from alembic.autogenerate import compare_metadata
  from alembic.migration import MigrationContext
  from alembic.script import ScriptDirectory
  import mlflow.db
  from mlflow.exceptions import MlflowException
  from mlflow.store.db.base_sql_model import Base
  from mlflow.store.db.utils import _get_alembic_config, _verify_schema
  from mlflow.store.tracking.dbmodels.initial_models import Base
  from mlflow.store.tracking.sqlalchemy_store import SqlAlchemyStore
  from tests.integration.utils import invoke_cli_runner
  from tests.store.dump_schema import dump_db_schema
label_desc: Use image node_id 6 for calling a global function with example usage: test_sqlalchemy_store_detects_schema_mismatch(db_url) without return types