def test_insert_delete_lines():
screen = DiffScreen(80, 24)
screen.cursor_to_line(screen.lines // 2)
for method in ["insert_lines", "delete_lines"]:
screen.dirty.clear()
getattr(screen, method)()
assert screen.dirty == set(range(screen.cursor.y, screen.lines))
def test_insert_delete_lines():
screen = DiffScreen(80, 24)
screen.cursor_to_line(screen.lines // 2)
for method in ["insert_lines", "delete_lines"]:
screen.dirty.clear()
getattr(screen, method)()
assert screen.dirty == set(range(screen.cursor.y, screen.lines))
def test_index():
screen = DiffScreen(80, 24)
screen.dirty.clear()
# a) not at the bottom margin -- nothing is marked dirty.
screen.index()
assert not screen.dirty
# b) whole screen is dirty.
screen.cursor_to_line(24)
screen.index()
assert screen.dirty == set(range(screen.lines))
def test_index():
screen = DiffScreen(80, 24)
screen.dirty.clear()
# a) not at the bottom margin -- nothing is marked dirty.
screen.index()
assert not screen.dirty
# b) whole screen is dirty.
screen.cursor_to_line(24)
screen.index()
assert screen.dirty == set(range(screen.lines))
def test_reverse_index():
screen = DiffScreen(80, 24)
screen.dirty.clear()
# a) not at the top margin -- whole screen is dirty.
screen.reverse_index()
assert screen.dirty == set(range(screen.lines))
# b) nothing is marked dirty.
screen.dirty.clear()
screen.cursor_to_line(screen.lines // 2)
screen.reverse_index()
assert not screen.dirty
def test_reverse_index():
screen = DiffScreen(80, 24)
screen.dirty.clear()
# a) not at the top margin -- whole screen is dirty.
screen.reverse_index()
assert screen.dirty == set(range(screen.lines))
# b) nothing is marked dirty.
screen.dirty.clear()
screen.cursor_to_line(screen.lines // 2)
screen.reverse_index()
assert not screen.dirty
def test_erase_in_display():
screen = DiffScreen(80, 24)
screen.cursor_to_line(screen.lines // 2)
# a) from cursor to the end of the screen.
screen.dirty.clear()
screen.erase_in_display()
assert screen.dirty == set(range(screen.cursor.y, screen.lines))
# b) from the begining of the screen to cursor.
screen.dirty.clear()
screen.erase_in_display(1)
assert screen.dirty == set(range(0, screen.cursor.y + 1))
# c) whole screen.
screen.dirty.clear()
screen.erase_in_display(2)
assert screen.dirty == set(range(0, screen.lines))
def test_erase_in_display():
screen = DiffScreen(80, 24)
screen.cursor_to_line(screen.lines // 2)
# a) from cursor to the end of the screen.
screen.dirty.clear()
screen.erase_in_display()
assert screen.dirty == set(range(screen.cursor.y, screen.lines))
# b) from the begining of the screen to cursor.
screen.dirty.clear()
screen.erase_in_display(1)
assert screen.dirty == set(range(0, screen.cursor.y + 1))
# c) whole screen.
screen.dirty.clear()
screen.erase_in_display(2)
assert screen.dirty == set(range(0, screen.lines))
