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How to use _setup_test_only_if_needed_labels method in autotest

Best Python code snippet using autotest_python

only_if_needed_unittests.py

Source:only_if_needed_unittests.py

...6from autotest_lib.frontend.afe import models7from autotest_lib.scheduler import monitor_db_unittest8_DEBUG = False9class OnlyIfNeededTest(monitor_db_unittest.DispatcherSchedulingTest):10    def _setup_test_only_if_needed_labels(self):11        # apply only_if_needed label3 to host112        models.Host.smart_get('host1').labels.add(self.label3)13        return self._create_job_simple([1], use_metahost=True)14    def test_only_if_needed_labels_avoids_host(self):15        job = self._setup_test_only_if_needed_labels()16        # if the job doesn't depend on label3, there should be no scheduling17        self._run_scheduler()18        self._check_for_extra_schedulings()19    def test_only_if_needed_labels_schedules(self):20        job = self._setup_test_only_if_needed_labels()21        job.dependency_labels.add(self.label3)22        self._run_scheduler()23        self._assert_job_scheduled_on(1, 1)24        self._check_for_extra_schedulings()25    def test_only_if_needed_labels_via_metahost(self):26        job = self._setup_test_only_if_needed_labels()27        job.dependency_labels.add(self.label3)28        # should also work if the metahost is the only_if_needed label29        self._do_query('DELETE FROM afe_jobs_dependency_labels')30        self._create_job(metahosts=[3])31        self._run_scheduler()32        self._assert_job_scheduled_on(2, 1)33        self._check_for_extra_schedulings()34    def test_metahosts_obey_blocks(self):35        """36        Metahosts can't get scheduled on hosts already scheduled for37        that job.38        """39        self._create_job(metahosts=[1], hosts=[1])40        # make the nonmetahost entry complete, so the metahost can try...

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