def test_api_call_headers_with_invalid_key(self):
        """Test the self.plugin_class.make_api_call() function with headers that have an invalid key."""
        headers = {'test': 'test'}
        headers[1] = 'test' # type: ignore
        with requests_mock.Mocker() as m:
            m.get('http://example.com/endpoint', text='success', status_code=200, headers={'test': 'test', '1': 'test'})
            result = self.plugin_class.make_api_call(host='http://example.com', endpoint='/endpoint', hdrs=headers)
            response = json.loads(result)

            self.assertEqual(response['status'], 'success')
            self.assertEqual(response['status_code'], 200)
            self.assertEqual(response['response'], 'success')
Test the self.plugin_class.make_api_call() function with headers that have an invalid key.
src/autogpt_plugins/api_tools/test_api_tools.py