code: def test_gauge():
      g = Gauge("test_gauge", "A test gauge")
      assert g.name == "test_gauge"
      assert g.description == "A test gauge"
      assert g.tag_keys == ()
      assert g.type == "Gauge"
      assert g.record(1) is None
  
imports: from .....tests.core import require_ray
  from ..ray_metric import Counter, Gauge, Meter, Histogram
label_desc: Use image node_id 3 for calling a global function with example usage: test_gauge() without return types