code: def test_nonconsecutive_failures(serve_instance):
      counter = ray.remote(Counter).remote()
  
      # Test that a health check failing every other call isn't marked unhealthy.
      @serve.deployment(health_check_period_s=0.1)
      class FlakyHealthCheck:
          def check_health(self):
              curr_count = ray.get(counter.inc.remote())
              if curr_count % 2 == 0:
                  raise Exception("Ah! I had evens!")
  
          def __call__(self, *args):
              return ray.get_runtime_context().current_actor
  
      h = serve.run(FlakyHealthCheck.bind())
      a1 = h.remote().result()
  
      # Wait for 10 health check periods, should never get marked unhealthy.
      wait_for_condition(lambda: ray.get(counter.get.remote()) > 10)
      assert h.remote().result()._actor_id == a1._actor_id
  
imports: import pytest
  import ray
  from ray import serve
  from ray._private.test_utils import wait_for_condition
  from ray.exceptions import RayError
  from ray.serve._private.common import DeploymentStatus
  from ray.serve._private.constants import REPLICA_HEALTH_CHECK_UNHEALTHY_THRESHOLD, SERVE_DEFAULT_APP_NAME
label_desc: Use image node_id 7 for calling a global function with example usage: test_nonconsecutive_failures(serve_instance) and returns: ray