code: def test_calculate_project_environment_hash(self):
      # Setup
      self.__setup()
      # Test hashing the default (with hardware info)
      result = (
          self.environment_controller._calculate_project_environment_hash()
      )
      assert result
      # Test hashing the default Dockerfile
      result = self.environment_controller._calculate_project_environment_hash(
          save_hardware_file=False
      )
      assert result == "1e32ff083520f792cbe4bafdc2de2a01"
      # Test if hash is the same as that of create
      environment_obj = self.environment_controller.create(
          {}, save_hardware_file=False
      )
      self.environment_ids.append(environment_obj.id)
      result = self.environment_controller._calculate_project_environment_hash(
          save_hardware_file=False
      )
      assert result == "1e32ff083520f792cbe4bafdc2de2a01"
      assert result == environment_obj.unique_hash
  
      # Test if the hash is the same if the same file is passed in as an input
      input_dict = {
          "paths": [self.definition_filepath, self.random_filepath]
      }
      environment_obj_1 = self.environment_controller.create(
          input_dict, save_hardware_file=False
      )
      self.environment_ids.append(environment_obj_1.id)
      result = self.environment_controller._calculate_project_environment_hash(
          save_hardware_file=False
      )
      assert result == "1e32ff083520f792cbe4bafdc2de2a01"
      assert result == environment_obj_1.unique_hash
  
imports: import os
  import uuid
  import threading
  import tempfile
  import platform
  import timeout_decorator
  from io import open
  from datmo.config import Config
  from datmo.core.controller.project import ProjectController
  from datmo.core.controller.environment.environment import EnvironmentController
  from datmo.core.entity.environment import Environment
  from datmo.core.util.exceptions import EntityNotFound, RequiredArgumentMissing, TooManyArgumentsFound, FileAlreadyExistsError, UnstagedChanges, EnvironmentDoesNotExist, ProjectNotInitialized
  from datmo.core.util.misc_functions import check_docker_inactive, pytest_docker_environment_failed_instantiation
label_desc: Use image node_id 21 for calling the TestEnvironmentController obj's underlying member method code with example usage: obj.test_calculate_project_environment_hash() without return types