Fixed race condition in test.

Author: hategan

tests/user_guide/test_job_wait_active.py

@@ -3,8 +3,9 @@
 
 def test_user_guide_job_wait_active() -> None:
     ex = JobExecutor.get_instance('local')
-    job = Job(JobSpec(executable='/bin/date'))
+    job = Job(JobSpec(executable='/bin/sleep', arguments=['1']))
     ex.submit(job)
     status = job.wait(target_states=[JobState.ACTIVE])
     assert status is not None
     assert status.state == JobState.ACTIVE
+    job.wait() # prevent logging messages from showing up after test completes