code: def test_no_type(self):
      self.cfg = _no_sql_testing_config(
          directives=(
              "\n[post_write_hooks]\n" "hooks=foo\n" "foo.bar=somebar\n"
          )
      )
  
      assert_raises_message(
          util.CommandError,
          "Key foo.type is required for post write hook 'foo'",
          command.revision,
          self.cfg,
          message="x",
      )
  
imports: import os
  import sys
  from alembic import command
  from alembic import util
  from alembic.script import write_hooks
  from alembic.testing import assert_raises_message
  from alembic.testing import combinations
  from alembic.testing import eq_
  from alembic.testing import mock
  from alembic.testing import TestBase
  from alembic.testing.env import _get_staging_directory
  from alembic.testing.env import _no_sql_testing_config
  from alembic.testing.env import clear_staging_env
  from alembic.testing.env import staging_env
  from alembic.util import compat
label_desc: Use image node_id 7 for calling the RunHookTest obj's underlying member method code with example usage: obj.test_no_type() without return types