code: def test_parse_beta() -> None:
      test_cases = [
          "https://beta.wandb.ai",
          "https://beta.wandb.ai/settings",
      ]
      for test_case in test_cases:
          ref = WandbReference.parse(test_case)
          assert ref.host == "beta.wandb.ai"
          assert ref.entity is None
  
file_path: wandb/tests/pytest_tests/system_tests/test_launch/test_wandb_reference.py
imports: from wandb.sdk.launch.wandb_reference import WandbReference
label_desc: Use image node_id 3 for calling a global function with example usage: test_parse_beta() without return types