code: def test_settings():
      v0 = settings.get()
      assert isinstance(v0, dict)
      assert all(isinstance(alias, str) for alias in v0)
      assert settings.get("validate_distributions_pyro") is True
      assert settings.get("validate_distributions_torch") is True
      assert settings.get("validate_poutine") is True
      assert settings.get("validate_infer") is True
  
imports: import pytest
  from pyro import settings
label_desc: Use image node_id 1 for calling a global function with example usage: test_settings() without return types