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()
