code: def test_parse_runtime_env_from_json_env_variable(self):
      job_config_json = {"runtime_env": {"working_dir": "uri://abc"}}
      config = job_config.JobConfig.from_json(job_config_json)
      assert config.runtime_env == job_config_json.get("runtime_env")
      assert config.metadata == {}
  
imports: import os
  import pytest
  import sys
  import tempfile
  from pathlib import Path
  from ray import job_config
  import yaml
  import jsonschema
  from ray._private.runtime_env.validation import parse_and_validate_excludes, parse_and_validate_working_dir, parse_and_validate_conda, parse_and_validate_pip, parse_and_validate_env_vars, parse_and_validate_py_modules
  from ray._private.runtime_env.plugin_schema_manager import RuntimeEnvPluginSchemaManager
  from ray.runtime_env import RuntimeEnv
label_desc: Use image node_id 1 for calling the TestParseJobConfig obj's underlying member method code with example usage: obj.test_parse_runtime_env_from_json_env_variable() without return types