def test_should_not_start_already_started_driver(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
drv = ScreenBufferTest.FakeDriver(self.queue)
buf.start(drv)
self.queue.push(None)
try:
self.assertRaises(ValueError, buf.start, drv)
finally:
buf.stop()
def test_should_not_start_already_started_driver(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
drv = ScreenBufferTest.FakeDriver(self.queue)
buf.start(drv)
self.queue.push(None)
try:
self.assertRaises(ValueError, buf.start, drv)
finally:
buf.stop()
def test_should_start_and_stop_driver(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
drv = ScreenBufferTest.FakeDriver(self.queue)
buf.start(drv)
drv.started.wait()
self.queue.push_none_and_wait()
buf.stop()
self.assertTrue(drv.stopped)
def test_should_start_and_stop_driver(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
drv = ScreenBufferTest.FakeDriver(self.queue)
buf.start(drv)
drv.started.wait()
self.queue.push_none_and_wait()
buf.stop()
self.assertTrue(drv.stopped)
def test_should_restart_driver(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
drv = ScreenBufferTest.FakeDriver(self.queue)
buf.start(drv)
self.queue.push(None)
queue2 = ScreenBufferTest.Queue()
drv2 = ScreenBufferTest.FakeDriver(queue2)
buf.restart(drv2)
queue2.push(None)
buf.stop()
def test_should_restart_driver(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
drv = ScreenBufferTest.FakeDriver(self.queue)
buf.start(drv)
self.queue.push(None)
queue2 = ScreenBufferTest.Queue()
drv2 = ScreenBufferTest.FakeDriver(queue2)
buf.restart(drv2)
queue2.push(None)
buf.stop()
def test_should_wait_with_timeout(self):
buf = ScreenBuffer(2, buffer_size=5, timeout=13)
drv = ScreenBufferTest.FakeDriver(self.queue)
with patch.object(buf._condition_var, 'wait',
wraps=buf._condition_var.wait) as cond_wait:
buf.start(drv)
drv.started.wait()
self.queue.push_backward_records(14, 7)
self.queue.wait()
buf.stop()
cond_wait.assert_called_once_with(13)
def test_should_wait_with_timeout(self):
buf = ScreenBuffer(2, buffer_size=5, timeout=13)
drv = ScreenBufferTest.FakeDriver(self.queue)
with patch.object(buf._condition_var,
'wait',
wraps=buf._condition_var.wait) as cond_wait:
buf.start(drv)
drv.started.wait()
self.queue.push_backward_records(14, 7)
self.queue.wait()
buf.stop()
cond_wait.assert_called_once_with(13)
def test_should_fetch_records_from_thread(self):
drv = ScreenBufferTest.FakeDriver(self.queue)
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.start(drv)
self.queue.push_backward_records(2, 2)
self.queue.wait()
cur = buf.get_current_lines()
buf.stop()
self.assertTrue(drv.stopped)
self.assertFalse(drv.error)
self.assertEqual((None, True, 7), drv.instruction)
self.assertEqual(2, len(cur))
self.assertEqual('1', cur[0].message)
self.assertEqual('2', cur[1].message)
def test_should_clear_existing_records_on_restart(self):
drv = ScreenBufferTest.FakeDriver(self.queue)
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.start(drv)
self.queue.push_backward_records(2, 2)
self.queue.wait()
queue2 = ScreenBufferTest.Queue()
drv2 = ScreenBufferTest.FakeDriver(queue2)
buf.restart(drv2)
queue2.push_none_and_wait()
try:
self.assertEqual(0, len(buf.get_current_lines()))
finally:
buf.stop()
def test_should_fetch_records_from_thread(self):
drv = ScreenBufferTest.FakeDriver(self.queue)
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.start(drv)
self.queue.push_backward_records(2, 2)
self.queue.wait()
cur = buf.get_current_lines()
buf.stop()
self.assertTrue(drv.stopped)
self.assertFalse(drv.error)
self.assertEqual((None, True, 7), drv.instruction)
self.assertEqual(2, len(cur))
self.assertEqual('1', cur[0].message)
self.assertEqual('2', cur[1].message)
def test_should_clear_existing_records_on_restart(self):
drv = ScreenBufferTest.FakeDriver(self.queue)
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.start(drv)
self.queue.push_backward_records(2, 2)
self.queue.wait()
queue2 = ScreenBufferTest.Queue()
drv2 = ScreenBufferTest.FakeDriver(queue2)
buf.restart(drv2)
queue2.push_none_and_wait()
try:
self.assertEqual(0, len(buf.get_current_lines()))
finally:
buf.stop()