def test_should_get_buffer_instructions_if_both_buffers_are_below_threshold(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.append_record(self._get_line(11))
buf.append_record(self._get_line(12))
self.assertEqual(((12, False, 5), (11, True, 5)),
buf.get_buffer_instructions(ScreenBufferTest.NullDriver()))
def test_should_append_record_on_non_empty_buffer(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.append_record(self._get_line(2))
buf.append_record(self._get_line(3))
cur = buf.get_current_lines()
self.assertEqual(2, len(cur))
self.assertEqual('2', cur[0].message)
self.assertEqual('3', cur[1].message)
def test_should_append_record_on_non_empty_buffer(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.append_record(self._get_line(2))
buf.append_record(self._get_line(3))
cur = buf.get_current_lines()
self.assertEqual(2, len(cur))
self.assertEqual('2', cur[0].message)
self.assertEqual('3', cur[1].message)
def test_should_append_multi_line_record_spanning_over_end_of_buffer(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.append_record(self._get_line(1))
buf.append_record(self._get_line(2, 'a\nb'))
cur = buf.get_current_lines()
self.assertEqual(2, len(cur))
self.assertEqual('a', cur[0].message)
self.assertEqual('b', cur[1].message)
def test_should_append_multi_line_record_spanning_over_end_of_buffer(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.append_record(self._get_line(1))
buf.append_record(self._get_line(2, 'a\nb'))
cur = buf.get_current_lines()
self.assertEqual(2, len(cur))
self.assertEqual('a', cur[0].message)
self.assertEqual('b', cur[1].message)
def test_should_append_record_on_empty_buffer(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.add_observer(self.observer.notify)
buf.append_record(self._get_line(2))
self.assertEqual(1, self.observer.count)
cur = buf.get_current_lines()
self.assertEqual(1, len(cur))
self.assertEqual('2', cur[0].message)
def test_should_get_buffer_instructions_if_both_buffers_are_below_threshold(
self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.append_record(self._get_line(11))
buf.append_record(self._get_line(12))
self.assertEqual(
((12, False, 5), (11, True, 5)),
buf.get_buffer_instructions(ScreenBufferTest.NullDriver()))
def test_should_get_buffer_instructions_for_backward_buffer(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
for i in range(10, 20):
buf.append_record(self._get_line(i + 1))
for i in range(0, 3):
buf.go_to_previous_page()
self.assertEqual(((11, True, 5),),
buf.get_buffer_instructions(ScreenBufferTest.NullDriver()))
def test_should_go_to_next_page_with_less_lines_than_page_size(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.append_record(self._get_line(1))
buf.go_to_next_page()
cur = buf.get_current_lines()
self.assertEqual(1, len(cur))
self.assertEqual('1', cur[0].message)
def test_should_go_to_next_page_with_less_lines_than_page_size(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.append_record(self._get_line(1))
buf.go_to_next_page()
cur = buf.get_current_lines()
self.assertEqual(1, len(cur))
self.assertEqual('1', cur[0].message)
def test_should_append_record_on_empty_buffer(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.add_observer(self.observer.notify)
buf.append_record(self._get_line(2))
self.assertEqual(1, self.observer.count)
cur = buf.get_current_lines()
self.assertEqual(1, len(cur))
self.assertEqual('2', cur[0].message)
def test_should_get_buffer_instructions_for_backward_buffer(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
for i in range(10, 20):
buf.append_record(self._get_line(i + 1))
for i in range(0, 3):
buf.go_to_previous_page()
self.assertEqual(
((11, True, 5), ),
buf.get_buffer_instructions(ScreenBufferTest.NullDriver()))
def test_should_not_get_buffer_instructions_for_backward_buffer_if_below_threshold(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
for i in range(10, 20):
buf.append_record(self._get_line(i + 1))
buf.go_to_previous_page()
buf.go_to_previous_page()
buf.go_to_previous_line()
self.assertEqual(tuple(),
buf.get_buffer_instructions(ScreenBufferTest.NullDriver()))
def test_should_prepend_record_on_buffer_not_at_end_of_screen(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.append_record(self._get_line(2))
buf.append_record(self._get_line(3))
buf.append_record(self._get_line(4))
buf.go_to_previous_line()
buf.prepend_record(self._get_line(1))
cur = buf.get_current_lines()
self.assertEqual(2, len(cur))
self.assertEqual('2', cur[0].message)
self.assertEqual('3', cur[1].message)
def test_should_go_to_next_line(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
for i in range(10):
buf.append_record(self._get_line(i + 1))
buf.go_to_previous_page()
buf.go_to_next_line()
cur = buf.get_current_lines()
self.assertEqual(2, len(cur))
self.assertEqual('8', cur[0].message)
def test_should_go_to_next_line(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
for i in range(10):
buf.append_record(self._get_line(i + 1))
buf.go_to_previous_page()
buf.go_to_next_line()
cur = buf.get_current_lines()
self.assertEqual(2, len(cur))
self.assertEqual('8', cur[0].message)
def test_should_prepend_record_on_buffer_not_at_end_of_screen(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.append_record(self._get_line(2))
buf.append_record(self._get_line(3))
buf.append_record(self._get_line(4))
buf.go_to_previous_line()
buf.prepend_record(self._get_line(1))
cur = buf.get_current_lines()
self.assertEqual(2, len(cur))
self.assertEqual('2', cur[0].message)
self.assertEqual('3', cur[1].message)
def test_should_not_get_buffer_instructions_for_backward_buffer_if_below_threshold(
self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
for i in range(10, 20):
buf.append_record(self._get_line(i + 1))
buf.go_to_previous_page()
buf.go_to_previous_page()
buf.go_to_previous_line()
self.assertEqual(
tuple(),
buf.get_buffer_instructions(ScreenBufferTest.NullDriver()))
def test_should_auto_scroll_on_append_if_screen_is_at_end_of_buffer(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.append_record(self._get_line(2))
buf.append_record(self._get_line(3))
buf.add_observer(self.observer.notify)
buf.append_record(self._get_line(4))
cur = buf.get_current_lines()
self.assertEqual(2, len(cur))
self.assertEqual('3', cur[0].message)
self.assertEqual('4', cur[1].message)
self.assertEqual(1, self.observer.count)
def test_should_auto_scroll_on_append_if_screen_is_at_end_of_buffer(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.append_record(self._get_line(2))
buf.append_record(self._get_line(3))
buf.add_observer(self.observer.notify)
buf.append_record(self._get_line(4))
cur = buf.get_current_lines()
self.assertEqual(2, len(cur))
self.assertEqual('3', cur[0].message)
self.assertEqual('4', cur[1].message)
self.assertEqual(1, self.observer.count)
def test_should_auto_scroll_after_manual_scroll(self):
dt = datetime.datetime.utcnow()
buf = ScreenBuffer(page_size=2, buffer_size=5)
self.queue.push(13)
self.queue.push(None)
self.queue.push_forward_records(13, 7)
self.queue.push_forward_records(12, 5)
drv = ScreenBufferTest.FakeDriver(self.queue, dt)
buf.get_records(drv)
buf.go_to_next_page()
buf.go_to_next_page()
buf.go_to_next_line()
buf.append_record(self._get_line(20))
cur = buf.get_current_lines()
self.assertEqual(2, len(cur))
self.assertEqual('19', cur[0].message)
self.assertEqual('20', cur[1].message)
def test_should_auto_scroll_after_manual_scroll(self):
dt = datetime.datetime.utcnow()
buf = ScreenBuffer(page_size=2, buffer_size=5)
self.queue.push(13)
self.queue.push(None)
self.queue.push_forward_records(13, 7)
self.queue.push_forward_records(12, 5)
drv = ScreenBufferTest.FakeDriver(self.queue, dt)
buf.get_records(drv)
buf.go_to_next_page()
buf.go_to_next_page()
buf.go_to_next_line()
buf.append_record(self._get_line(20))
cur = buf.get_current_lines()
self.assertEqual(2, len(cur))
self.assertEqual('19', cur[0].message)
self.assertEqual('20', cur[1].message)
def test_should_not_auto_scroll_if_not_at_end_of_buffer(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.append_record(self._get_line(2))
buf.append_record(self._get_line(3))
buf.append_record(self._get_line(4))
buf.go_to_previous_line()
buf.add_observer(self.observer.notify)
buf.append_record(self._get_line(5))
cur = buf.get_current_lines()
self.assertEqual(2, len(cur))
self.assertEqual('2', cur[0].message)
self.assertEqual(0, self.observer.count)
def test_should_not_auto_scroll_if_not_at_end_of_buffer(self):
buf = ScreenBuffer(page_size=2, buffer_size=5)
buf.append_record(self._get_line(2))
buf.append_record(self._get_line(3))
buf.append_record(self._get_line(4))
buf.go_to_previous_line()
buf.add_observer(self.observer.notify)
buf.append_record(self._get_line(5))
cur = buf.get_current_lines()
self.assertEqual(2, len(cur))
self.assertEqual('2', cur[0].message)
self.assertEqual(0, self.observer.count)
