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_modes():
# Making sure `DECSCNM` triggers a screen to be fully re-drawn.
screen = DiffScreen(80, 24)
screen.dirty.clear()
screen.set_mode(mo.DECSCNM >> 5, private=True)
assert screen.dirty == set(range(screen.lines))
screen.dirty.clear()
screen.reset_mode(mo.DECSCNM >> 5, private=True)
assert screen.dirty == set(range(screen.lines))
def test_mark_whole_screen():
# .. this is straightforward -- make sure we have a dirty attribute
# and whole screen is marked as dirty on initialization, reset,
# resize etc.
screen = DiffScreen(80, 24)
# a) init.
assert hasattr(screen, "dirty")
assert isinstance(screen.dirty, set)
assert screen.dirty == set(range(screen.lines))
# b) reset().
screen.dirty.clear()
screen.reset()
assert screen.dirty == set(range(screen.lines))
# c) resize().
screen.dirty.clear()
screen.resize()
assert screen.dirty == set(range(screen.lines))
# d) alignment_display().
screen.dirty.clear()
screen.alignment_display()
assert screen.dirty == set(range(screen.lines))
def test_mark_single_line():
screen = DiffScreen(80, 24)
# a) draw().
screen.dirty.clear()
screen.draw(b"f")
assert len(screen.dirty) is 1
assert screen.cursor.y in screen.dirty
# b) rest ...
for method in ["insert_characters", "delete_characters", "erase_characters", "erase_in_line"]:
screen.dirty.clear()
getattr(screen, method)()
assert len(screen.dirty) is 1
assert screen.cursor.y in screen.dirty
def test_mark_single_line():
screen = DiffScreen(80, 24)
# a) draw().
screen.dirty.clear()
screen.draw("f")
assert len(screen.dirty) is 1
assert screen.cursor.y in screen.dirty
# b) rest ...
for method in ["insert_characters", "delete_characters",
"erase_characters", "erase_in_line"]:
screen.dirty.clear()
getattr(screen, method)()
assert len(screen.dirty) is 1
assert screen.cursor.y in screen.dirty
def test_mark_whole_screen():
# .. this is straightforward -- make sure we have a dirty attribute
# and whole screen is marked as dirty on initialization, reset,
# resize etc.
screen = DiffScreen(80, 24)
# a) init.
assert hasattr(screen, "dirty")
assert isinstance(screen.dirty, set)
assert screen.dirty == set(range(screen.lines))
# b) reset().
screen.dirty.clear()
screen.reset()
assert screen.dirty == set(range(screen.lines))
# c) resize().
screen.dirty.clear()
screen.resize()
assert screen.dirty == set(range(screen.lines))
# d) alignment_display().
screen.dirty.clear()
screen.alignment_display()
assert screen.dirty == set(range(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))
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_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_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_draw_wrap():
screen = DiffScreen(80, 24)
screen.set_mode(mo.DECAWM)
# fill every character cell on the first row
for _ in range(80):
screen.draw("g")
assert screen.cursor.y == 0
screen.dirty.clear()
# now write one more character which should cause wrapping
screen.draw("h")
assert screen.cursor.y == 1
# regression test issue #36 where the wrong line was marked as
# dirty
assert screen.dirty == set([1])
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_modes():
# Making sure `DECSCNM` triggers a screen to be fully re-drawn.
screen = DiffScreen(80, 24)
screen.dirty.clear()
screen.set_mode(mo.DECSCNM >> 5, private=True)
assert screen.dirty == set(range(screen.lines))
screen.dirty.clear()
screen.reset_mode(mo.DECSCNM >> 5, private=True)
assert screen.dirty == set(range(screen.lines))
def test_draw_wrap():
screen = DiffScreen(80, 24)
screen.set_mode(mo.DECAWM)
# fill every character cell on the first row
for _ in range(80):
screen.draw(b"g")
assert screen.cursor.y == 0
screen.dirty.clear()
# now write one more character which should cause wrapping
screen.draw(b"h")
assert screen.cursor.y == 1
# regression test issue #36 where the wrong line was marked as
# dirty
assert screen.dirty == set([1])
