new_contents: from __future__ import annotations
  
  from typing import TYPE_CHECKING
  
  import pytest
  import pytest_mock
  
  from erasmus.cogs.admin import Admin
  from erasmus.erasmus import Erasmus
  from erasmus.types import Refreshable
  
  if TYPE_CHECKING:
      from unittest.mock import Mock
  
  
  class TestAdmin:
      @pytest.fixture
      def mock_bot(self, mocker: pytest_mock.MockerFixture) -> Mock:
          return mocker.Mock(spec=Erasmus)
  
      def test_instantiate(self, mock_bot: Erasmus) -> None:
          cog = Admin(mock_bot)
          assert cog is not None
          assert not isinstance(cog, Refreshable)
  
subject: Add initial tests for admin cog