def test_index():
screen = HistoryScreen(5, 5, pages=10)
# Filling the screen with line numbers, so it's easier to
# track history contents.
for idx in xrange(len(screen)):
screen.draw(unicode(idx))
if idx is not len(screen) - 1:
screen.linefeed()
assert not screen.history.top
assert not screen.history.bottom
# a) first index, expecting top history to be updated.
line = screen[0]
screen.index()
assert screen.history.top
assert screen.history.top[-1] == line
# b) second index.
line = screen[0]
screen.index()
assert len(screen.history.top) == 2
assert screen.history.top[-1] == line
# c) rotation.
for _ in xrange(len(screen) * screen.lines):
screen.index()
assert len(screen.history.top) == 25 # pages // 2 * lines
def test_index():
screen = HistoryScreen(5, 5, pages=10)
# Filling the screen with line numbers, so it's easier to
# track history contents.
for idx in xrange(len(screen)):
screen.draw(unicode(idx))
if idx is not len(screen) - 1:
screen.linefeed()
assert not screen.history.top
assert not screen.history.bottom
# a) first index, expecting top history to be updated.
line = screen[0]
screen.index()
assert screen.history.top
assert screen.history.top[-1] == line
# b) second index.
line = screen[0]
screen.index()
assert len(screen.history.top) == 2
assert screen.history.top[-1] == line
# c) rotation.
for _ in xrange(len(screen) * screen.lines):
screen.index()
assert len(screen.history.top) == 25 # pages // 2 * lines
