class ImageScannerTestCase(unittest.TestCase): DATASTORE_ID = "DS01" VM_SCAN_RATE = 11 IMAGE_MARK_RATE = 12 TIMEOUT = 6000 # This test uses two threads, the main thread is used to check # the state inside the state machine at different stages. The # second thread, ImageScannerThread, executes the steps in # sequence and calls out the two main methods: # get_active_images() and mark_unused() # These methods have been patched to synchronize with the main # thread. def setUp(self): self.image_manager = MagicMock() self.vm_manager = MagicMock() self.image_scanner = DatastoreImageScanner(self.image_manager, self.vm_manager, self.DATASTORE_ID) self.synchronizer = TestSynchronizer() self.wait_at_the_end_of_scan = False self.vm_manager.get_vm_images.side_effect = \ self.fake_get_vm_images self.image_manager.mark_unused.side_effect = \ self.fake_mark_unused self.raise_exception = False self.timeout = self.TIMEOUT def tearDown(self): self.image_scanner.stop() def test_lifecycle(self): assert_that( self.image_scanner.get_state() is DatastoreImageScanner.State.IDLE) self.image_scanner.start(self.timeout, self.VM_SCAN_RATE, self.IMAGE_MARK_RATE) self.image_scanner.wait_for_task_end() assert_that( self.image_scanner.get_state() is DatastoreImageScanner.State.IDLE) self.vm_manager.get_vm_images.\ assert_called_once_with(self.image_scanner) self.image_manager.mark_unused.\ assert_called_once_with(self.image_scanner) def test_stop(self): assert_that( self.image_scanner.get_state() is DatastoreImageScanner.State.IDLE) self.wait_at_the_end_of_scan = True self.image_scanner.start(self.timeout, self.VM_SCAN_RATE, self.IMAGE_MARK_RATE) self.wait_for_runner() self.image_scanner.stop() self.signal_runner() self.image_scanner.wait_for_task_end() assert_that( self.image_scanner.get_state() is DatastoreImageScanner.State.IDLE) exception = self.image_scanner.get_exception() assert_that(isinstance(exception, TaskTerminated) is True) self.vm_manager.get_vm_images.\ assert_called_with(self.image_scanner) assert_that(self.image_manager.mark_unused.called is False) def test_timeout(self): assert_that( self.image_scanner.get_state() is DatastoreImageScanner.State.IDLE) self.timeout = 1 self.wait_at_the_end_of_scan = True self.image_scanner.start(self.timeout, self.VM_SCAN_RATE, self.IMAGE_MARK_RATE) self.wait_for_runner() time.sleep(2) self.signal_runner() self.image_scanner.wait_for_task_end() assert_that( self.image_scanner.get_state() is DatastoreImageScanner.State.IDLE) exception = self.image_scanner.get_exception() assert_that(isinstance(exception, TaskTimeout) is True) self.vm_manager.get_vm_images.\ assert_called_with(self.image_scanner) assert_that(self.image_manager.mark_unused.called is False) def fake_get_vm_images(self, image_scanner): assert_that(image_scanner.datastore_id is self.DATASTORE_ID) assert_that(self.image_scanner.get_state() is DatastoreImageScanner.State.VM_SCAN) assert_that(image_scanner.vm_scan_rate is self.VM_SCAN_RATE) if self.wait_at_the_end_of_scan: # Wait here until the main thread wants to continue self.signal_main() self.wait_for_main() return dict() def fake_mark_unused(self, image_scanner): assert_that(image_scanner.datastore_id is self.DATASTORE_ID) assert_that(self.image_scanner.get_state() is DatastoreImageScanner.State.IMAGE_MARK) assert_that(image_scanner.image_mark_rate is self.IMAGE_MARK_RATE) return dict() def wait_for_runner(self): self.synchronizer.wait_for_runner() def signal_runner(self): self.synchronizer.signal_runner() def wait_for_main(self): self.synchronizer.wait_for_main() def signal_main(self): self.synchronizer.signal_main()
class ImageScannerTestCase(unittest.TestCase): DATASTORE_ID = "DS01" VM_SCAN_RATE = 11 IMAGE_MARK_RATE = 12 TIMEOUT = 6000 # This test uses two threads, the main thread is used to check # the state inside the state machine at different stages. The # second thread, ImageScannerThread, executes the steps in # sequence and calls out the two main methods: # get_active_images() and mark_unused() # These methods have been patched to synchronize with the main # thread. def setUp(self): self.image_manager = MagicMock() self.vm_manager = MagicMock() self.image_scanner = DatastoreImageScanner( self.image_manager, self.vm_manager, self.DATASTORE_ID) self.synchronizer = TestSynchronizer() self.wait_at_the_end_of_scan = False self.vm_manager.get_vm_images.side_effect = \ self.fake_get_vm_images self.image_manager.mark_unused.side_effect = \ self.fake_mark_unused self.raise_exception = False self.timeout = self.TIMEOUT def tearDown(self): self.image_scanner.stop() def test_lifecycle(self): assert_that(self.image_scanner.get_state() is DatastoreImageScanner.State.IDLE) self.image_scanner.start(self.timeout, self.VM_SCAN_RATE, self.IMAGE_MARK_RATE) self.image_scanner.wait_for_task_end() assert_that(self.image_scanner.get_state() is DatastoreImageScanner.State.IDLE) self.vm_manager.get_vm_images.\ assert_called_once_with(self.image_scanner) self.image_manager.mark_unused.\ assert_called_once_with(self.image_scanner) def test_stop(self): assert_that(self.image_scanner.get_state() is DatastoreImageScanner.State.IDLE) self.wait_at_the_end_of_scan = True self.image_scanner.start(self.timeout, self.VM_SCAN_RATE, self.IMAGE_MARK_RATE) self.wait_for_runner() self.image_scanner.stop() self.signal_runner() self.image_scanner.wait_for_task_end() assert_that(self.image_scanner.get_state() is DatastoreImageScanner.State.IDLE) exception = self.image_scanner.get_exception() assert_that(isinstance(exception, TaskTerminated) is True) self.vm_manager.get_vm_images.\ assert_called_with(self.image_scanner) assert_that(self.image_manager.mark_unused.called is False) def test_timeout(self): assert_that(self.image_scanner.get_state() is DatastoreImageScanner.State.IDLE) self.timeout = 1 self.wait_at_the_end_of_scan = True self.image_scanner.start(self.timeout, self.VM_SCAN_RATE, self.IMAGE_MARK_RATE) self.wait_for_runner() time.sleep(2) self.signal_runner() self.image_scanner.wait_for_task_end() assert_that(self.image_scanner.get_state() is DatastoreImageScanner.State.IDLE) exception = self.image_scanner.get_exception() assert_that(isinstance(exception, TaskTimeout) is True) self.vm_manager.get_vm_images.\ assert_called_with(self.image_scanner) assert_that(self.image_manager.mark_unused.called is False) def fake_get_vm_images(self, image_scanner): assert_that(image_scanner.datastore_id is self.DATASTORE_ID) assert_that(self.image_scanner.get_state() is DatastoreImageScanner.State.VM_SCAN) assert_that(image_scanner.vm_scan_rate is self.VM_SCAN_RATE) if self.wait_at_the_end_of_scan: # Wait here until the main thread wants to continue self.signal_main() self.wait_for_main() return dict() def fake_mark_unused(self, image_scanner): assert_that(image_scanner.datastore_id is self.DATASTORE_ID) assert_that(self.image_scanner.get_state() is DatastoreImageScanner.State.IMAGE_MARK) assert_that(image_scanner.image_mark_rate is self.IMAGE_MARK_RATE) return dict() def wait_for_runner(self): self.synchronizer.wait_for_runner() def signal_runner(self): self.synchronizer.signal_runner() def wait_for_main(self): self.synchronizer.wait_for_main() def signal_main(self): self.synchronizer.signal_main()