def test_should_stop_observing(self): buf = ScreenBuffer(page_size=2, buffer_size=5) buf.add_observer(self.observer.notify) buf.prepend_record(self._get_line(2)) buf.remove_observer(self.observer.notify) buf.prepend_record(self._get_line(1)) self.assertEqual(1, self.observer.count)
def test_should_stop_observing(self): buf = ScreenBuffer(page_size=2, buffer_size=5) buf.add_observer(self.observer.notify) buf.prepend_record(self._get_line(2)) buf.remove_observer(self.observer.notify) buf.prepend_record(self._get_line(1)) self.assertEqual(1, self.observer.count)
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_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_prepend_record_on_off_screen_buffer(self): buf = ScreenBuffer(page_size=2, buffer_size=5) buf.prepend_record(self._get_line(3)) buf.prepend_record(self._get_line(2)) buf.add_observer(self.observer.notify) buf.prepend_record(self._get_line(1)) self.assertEqual(0, self.observer.count) 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_prepend_record_on_off_screen_buffer(self): buf = ScreenBuffer(page_size=2, buffer_size=5) buf.prepend_record(self._get_line(3)) buf.prepend_record(self._get_line(2)) buf.add_observer(self.observer.notify) buf.prepend_record(self._get_line(1)) self.assertEqual(0, self.observer.count) 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_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_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)