code: def test_create_success_no_code_environment_files(self):
      self.__setup()
      # Create environment definition
      env_def_path = os.path.join(
          self.project_controller.environment_driver.environment_directory_path,
          "Dockerfile",
      )
      with open(env_def_path, "wb") as f:
          f.write(to_bytes("FROM python:3.5-alpine"))
  
      test_file = os.path.join(
          self.project_controller.file_driver.files_directory,
          "test.txt",
      )
      with open(test_file, "wb") as f:
          f.write(to_bytes(str("hello")))
  
      # test must pass when there is file present in root project folder
      result = self.snapshot_controller.create(
          {"message": "my test snapshot"}
      )
  
      assert result
  
imports: import os
  import tempfile
  import platform
  from io import open, TextIOWrapper
  from datmo.config import Config
  from datmo.core.controller.project import ProjectController
  from datmo.core.controller.environment.environment import EnvironmentController
  from datmo.core.controller.task import TaskController
  from datmo.core.controller.snapshot import SnapshotController
  from datmo.core.entity.snapshot import Snapshot
  from datmo.core.util.exceptions import EntityNotFound, RequiredArgumentMissing, TaskNotComplete, InvalidArgumentType, ProjectNotInitialized, InvalidProjectPath, DoesNotExist, UnstagedChanges
  from datmo.core.util.misc_functions import check_docker_inactive, pytest_docker_environment_failed_instantiation
label_desc: Use image node_id 10 for calling the TestSnapshotController obj's underlying member method code with example usage: obj.test_create_success_no_code_environment_files() without return types