def test_objects_navigator_move_page():
def valid_page_cb(index):
if index < 0 or index > 7:
raise IndexError()
nav = Navigator(valid_page_cb, cursor_index=2)
# Can't move up
valid, redraw = nav.move_page(-1, 5)
assert nav.page_index == 0
assert nav.cursor_index == 0
assert not nav.inverted
assert not valid
assert not redraw
# Page down
valid, redraw = nav.move_page(1, 5)
assert nav.page_index == 4
assert nav.cursor_index == 0
assert nav.inverted
assert valid
assert redraw
# Page up
valid, redraw = nav.move_page(-1, 3)
assert nav.page_index == 2
assert nav.cursor_index == 0
assert not nav.inverted
assert valid
assert redraw
def test_objects_navigator_move_page():
def valid_page_cb(index):
if index < 0 or index > 7:
raise IndexError()
nav = Navigator(valid_page_cb, cursor_index=2)
# Can't move up
valid, redraw = nav.move_page(-1, 5)
assert nav.page_index == 0
assert nav.cursor_index == 0
assert not nav.inverted
assert not valid
assert not redraw
# Page down
valid, redraw = nav.move_page(1, 5)
assert nav.page_index == 4
assert nav.cursor_index == 0
assert nav.inverted
assert valid
assert redraw
# Page up
valid, redraw = nav.move_page(-1, 3)
assert nav.page_index == 2
assert nav.cursor_index == 0
assert not nav.inverted
assert valid
assert redraw
def test_objects_navigator_properties():
def valid_page_cb(_):
return
nav = Navigator(valid_page_cb)
assert nav.step == 1
assert nav.position == (0, 0, False)
assert nav.absolute_index == 0
nav = Navigator(valid_page_cb, 5, 2, True)
assert nav.step == -1
assert nav.position == (5, 2, True)
assert nav.absolute_index == 3
def test_objects_navigator_move():
def valid_page_cb(index):
if index < 0 or index > 3:
raise IndexError()
nav = Navigator(valid_page_cb)
nav.top_item_height = 5
# Try to scroll up past the first item
valid, redraw = nav.move(-1, 2)
assert not valid
assert not redraw
# Scroll down
valid, redraw = nav.move(1, 3)
assert nav.page_index == 0
assert nav.cursor_index == 1
assert valid
assert not redraw
# Scroll down, reach last item on the page and flip the screen
valid, redraw = nav.move(1, 3)
assert nav.top_item_height is None
assert nav.page_index == 2
assert nav.cursor_index == 0
assert nav.inverted
assert valid
assert redraw
# Keep scrolling
valid, redraw = nav.move(1, 3)
assert nav.page_index == 3
assert nav.cursor_index == 0
assert nav.inverted
assert valid
assert redraw
# Reach the end of the page and stop
valid, redraw = nav.move(1, 1)
assert nav.page_index == 3
assert nav.cursor_index == 0
assert nav.inverted
assert not valid
assert not redraw
# Last item was large and takes up the whole screen, scroll back up and
# flip the screen again
valid, redraw = nav.move(-1, 1)
assert nav.page_index == 2
assert nav.cursor_index == 0
assert not nav.inverted
assert valid
assert redraw
def test_objects_navigator_properties():
def valid_page_cb(_):
return
nav = Navigator(valid_page_cb)
assert nav.step == 1
assert nav.position == (0, 0, False)
assert nav.absolute_index == 0
assert nav.top_item_height is None
nav = Navigator(valid_page_cb, 5, 2, True, 10)
assert nav.step == -1
assert nav.position == (5, 2, True)
assert nav.absolute_index == 3
assert nav.top_item_height == 10
def test_objects_navigator_flip():
def valid_page_cb(index):
if index < 0 or index > 10:
raise IndexError()
nav = Navigator(valid_page_cb)
nav.flip(5)
assert nav.page_index == 5
assert nav.cursor_index == 5
assert nav.inverted
nav.flip(3)
assert nav.page_index == 2
assert nav.cursor_index == 3
assert not nav.inverted
def test_objects_navigator_move():
def valid_page_cb(index):
if index < 0 or index > 3:
raise IndexError()
nav = Navigator(valid_page_cb)
nav.top_item_height = 5
# Try to scroll up past the first item
valid, redraw = nav.move(-1, 2)
assert not valid
assert not redraw
# Scroll down
valid, redraw = nav.move(1, 3)
assert nav.page_index == 0
assert nav.cursor_index == 1
assert valid
assert not redraw
# Scroll down, reach last item on the page and flip the screen
valid, redraw = nav.move(1, 3)
assert nav.top_item_height is None
assert nav.page_index == 2
assert nav.cursor_index == 0
assert nav.inverted
assert valid
assert redraw
# Keep scrolling
valid, redraw = nav.move(1, 3)
assert nav.page_index == 3
assert nav.cursor_index == 0
assert nav.inverted
assert valid
assert redraw
# Reach the end of the page and stop
valid, redraw = nav.move(1, 1)
assert nav.page_index == 3
assert nav.cursor_index == 0
assert nav.inverted
assert not valid
assert not redraw
# Last item was large and takes up the whole screen, scroll back up and
# flip the screen again
valid, redraw = nav.move(-1, 1)
assert nav.page_index == 2
assert nav.cursor_index == 0
assert not nav.inverted
assert valid
assert redraw
def test_objects_navigator_move_new_submission():
def valid_page_cb(index):
if index != -1:
raise IndexError()
nav = Navigator(valid_page_cb, page_index=-1)
# Can't move up
valid, redraw = nav.move(-1, 1)
assert nav.page_index == -1
assert nav.cursor_index == 0
assert not nav.inverted
assert not valid
assert not redraw
# Can't move down
valid, redraw = nav.move(1, 1)
assert nav.page_index == -1
assert nav.cursor_index == 0
assert not nav.inverted
assert not valid
assert not redraw
def test_objects_navigator_move_new_submission():
def valid_page_cb(index):
if index != -1:
raise IndexError()
nav = Navigator(valid_page_cb, page_index=-1)
# Can't move up
valid, redraw = nav.move(-1, 1)
assert nav.page_index == -1
assert nav.cursor_index == 0
assert not nav.inverted
assert not valid
assert not redraw
# Can't move down
valid, redraw = nav.move(1, 1)
assert nav.page_index == -1
assert nav.cursor_index == 0
assert not nav.inverted
assert not valid
assert not redraw
def test_objects_navigator_move_submission():
def valid_page_cb(index):
if index < -1 or index > 4:
raise IndexError()
nav = Navigator(valid_page_cb, page_index=-1)
# Can't move up
valid, redraw = nav.move(-1, 2)
assert nav.page_index == -1
assert nav.cursor_index == 0
assert not nav.inverted
assert not valid
assert not redraw
# Moving down jumps to the first comment
valid, redraw = nav.move(1, 2)
assert nav.page_index == 0
assert nav.cursor_index == 0
assert not nav.inverted
assert valid
assert redraw
# Moving down again inverts the screen
valid, redraw = nav.move(1, 2)
assert nav.page_index == 1
assert nav.cursor_index == 0
assert nav.inverted
assert valid
assert redraw
# Move up to the first comment
valid, redraw = nav.move(-1, 2)
assert nav.page_index == 0
assert nav.cursor_index == 0
assert not nav.inverted
assert valid
assert redraw
# Move up to the submission
valid, redraw = nav.move(-1, 2)
assert nav.page_index == -1
assert nav.cursor_index == 0
assert not nav.inverted
assert valid
assert redraw
def test_objects_navigator_flip():
def valid_page_cb(index):
if index < 0 or index > 10:
raise IndexError()
nav = Navigator(valid_page_cb)
nav.flip(5)
assert nav.page_index == 5
assert nav.cursor_index == 5
assert nav.inverted
nav.flip(3)
assert nav.page_index == 2
assert nav.cursor_index == 3
assert not nav.inverted
def test_objects_navigator_move_submission():
def valid_page_cb(index):
if index < -1 or index > 4:
raise IndexError()
nav = Navigator(valid_page_cb, page_index=-1)
# Can't move up
valid, redraw = nav.move(-1, 2)
assert nav.page_index == -1
assert nav.cursor_index == 0
assert not nav.inverted
assert not valid
assert not redraw
# Moving down jumps to the first comment
valid, redraw = nav.move(1, 2)
assert nav.page_index == 0
assert nav.cursor_index == 0
assert not nav.inverted
assert valid
assert redraw
# Moving down again inverts the screen
valid, redraw = nav.move(1, 2)
assert nav.page_index == 1
assert nav.cursor_index == 0
assert nav.inverted
assert valid
assert redraw
# Move up to the first comment
valid, redraw = nav.move(-1, 2)
assert nav.page_index == 0
assert nav.cursor_index == 0
assert not nav.inverted
assert valid
assert redraw
# Move up to the submission
valid, redraw = nav.move(-1, 2)
assert nav.page_index == -1
assert nav.cursor_index == 0
assert not nav.inverted
assert valid
assert redraw
