def test_insert_characters():
screen = update(Screen(3, 3), ["sam", "is ", "foo"], colored=[0])
# a) normal case
cursor = copy.copy(screen.cursor)
screen.insert_characters(2)
assert (screen.cursor.y, screen.cursor.x) == (cursor.y, cursor.x)
assert screen[0] == [
screen.default_char,
screen.default_char,
Char("s", fg="red")
]
# b) now inserting from the middle of the line
screen.cursor.y, screen.cursor.x = 2, 1
screen.insert_characters(1)
assert screen[2] == [Char("f"), screen.default_char, Char("o")]
# c) inserting more than we have
screen.insert_characters(10)
assert screen[2] == [Char("f"), screen.default_char, screen.default_char]
# d) 0 is 1
screen = update(Screen(3, 3), ["sam", "is ", "foo"], colored=[0])
screen.cursor_position()
screen.insert_characters()
assert screen[0] == [screen.default_char,
Char("s", fg="red"), Char("a", fg="red")]
screen = update(Screen(3, 3), ["sam", "is ", "foo"], colored=[0])
screen.cursor_position()
screen.insert_characters(1)
assert screen[0] == [screen.default_char,
Char("s", fg="red"), Char("a", fg="red")]
def test_erase_character():
screen = update(Screen(3, 3), ["sam", "is ", "foo"], colored=[0])
screen.erase_characters(2)
assert (screen.cursor.y, screen.cursor.x) == (0, 0)
assert screen.display == [" m", "is ", "foo"]
assert screen[0] == [
screen.default_char,
screen.default_char,
Char("m", fg="red")
]
screen.cursor.y, screen.cursor.x = 2, 2
screen.erase_characters()
assert (screen.cursor.y, screen.cursor.x) == (2, 2)
assert screen.display == [" m", "is ", "fo "]
screen.cursor.y, screen.cursor.x = 1, 1
screen.erase_characters(0)
assert (screen.cursor.y, screen.cursor.x) == (1, 1)
assert screen.display == [" m", "i ", "fo "]
# ! extreme cases.
screen = update(Screen(5, 1), ["12345"], colored=[0])
screen.cursor.x = 1
screen.erase_characters(3)
assert (screen.cursor.y, screen.cursor.x) == (0, 1)
assert screen.display == ["1 5"]
assert screen[0] == [
Char("1", fg="red"),
screen.default_char,
screen.default_char,
screen.default_char,
Char("5", "red")
]
screen = update(Screen(5, 1), ["12345"], colored=[0])
screen.cursor.x = 2
screen.erase_characters(10)
assert (screen.cursor.y, screen.cursor.x) == (0, 2)
assert screen.display == ["12 "]
assert screen[0] == [
Char("1", fg="red"),
Char("2", fg="red"),
screen.default_char,
screen.default_char,
screen.default_char
]
screen = update(Screen(5, 1), ["12345"], colored=[0])
screen.erase_characters(4)
assert (screen.cursor.y, screen.cursor.x) == (0, 0)
assert screen.display == [" 5"]
assert screen[0] == [
screen.default_char,
screen.default_char,
screen.default_char,
screen.default_char,
Char("5", fg="red")
]
def test_resize():
screen = Screen(2, 2)
screen.set_mode(mo.DECOM)
screen.set_margins(0, 1)
assert screen.size == (2, 2)
assert len(screen) == 2
assert len(screen[0]) == 2
assert screen == [[screen.default_char, screen.default_char]] * 2
screen.resize(3, 3)
assert screen.size == (3, 3)
assert len(screen) == 3
assert len(screen[0]) == 3
assert screen == [[screen.default_char,
screen.default_char,
screen.default_char]] * 3
assert mo.DECOM not in screen.mode
assert screen.margins == (0, 2)
screen.resize(2, 2)
assert screen.size == (2, 2)
assert len(screen) == 2
assert len(screen[0]) == 2
assert screen == [[screen.default_char, screen.default_char]] * 2
# quirks:
# a) if the current display is thinner than the requested size,
# new columns should be added to the right.
screen = update(Screen(2, 2), ["bo", "sh"], [None, None])
screen.resize(2, 3)
assert screen.display == ["bo ", "sh "]
# b) if the current display is wider than the requested size,
# columns should be removed from the right...
screen = update(Screen(2, 2), ["bo", "sh"], [None, None])
screen.resize(2, 1)
assert screen.display == ["b", "s"]
# c) if the current display is shorter than the requested
# size, new rows should be added on the bottom.
screen = update(Screen(2, 2), ["bo", "sh"], [None, None])
screen.resize(3, 2)
assert screen.display == ["bo", "sh", " "]
# d) if the current display is taller than the requested
# size, rows should be removed from the top.
screen = update(Screen(2, 2), ["bo", "sh"], [None, None])
screen.resize(1, 2)
assert screen.display == ["sh"]
def test_erase_in_line():
screen = update(Screen(5, 5),
["sam i", "s foo", "but a", "re yo", "u? "],
colored=[0])
screen.cursor_position(1, 3)
# a) erase from cursor to the end of line
screen.erase_in_line(0)
assert (screen.cursor.y, screen.cursor.x) == (0, 2)
assert screen.display == ["sa ", "s foo", "but a", "re yo", "u? "]
assert screen.buffer[0] == [
Char("s", fg="red"),
Char("a", fg="red"), screen.default_char, screen.default_char,
screen.default_char
]
# b) erase from the beginning of the line to the cursor
screen = update(screen, ["sam i", "s foo", "but a", "re yo", "u? "],
colored=[0])
screen.erase_in_line(1)
assert (screen.cursor.y, screen.cursor.x) == (0, 2)
assert screen.display == [" i", "s foo", "but a", "re yo", "u? "]
assert screen.buffer[0] == [
screen.default_char, screen.default_char, screen.default_char,
Char(" ", fg="red"),
Char("i", fg="red")
]
# c) erase the entire line
screen = update(screen, ["sam i", "s foo", "but a", "re yo", "u? "],
colored=[0])
screen.erase_in_line(2)
assert (screen.cursor.y, screen.cursor.x) == (0, 2)
assert screen.display == [" ", "s foo", "but a", "re yo", "u? "]
assert screen.buffer[0] == [screen.default_char] * 5
def test_report_device_status():
screen = Screen(10, 10)
acc = []
screen.write_process_input = acc.append
# a) noop
screen.report_device_status(42)
assert not acc
# b) terminal status
screen.report_device_status(5)
assert acc.pop() == ctrl.CSI + b"0n"
# c) cursor position, DECOM off
screen.cursor_to_column(5)
screen.report_device_status(6)
assert acc.pop() == ctrl.CSI + "{0};{1}R".format(1, 5).encode("utf-8")
# d) cursor position, DECOM on
screen.cursor_position()
screen.set_margins(5, 9)
screen.set_mode(mo.DECOM)
screen.cursor_to_line(5)
screen.report_device_status(6)
assert acc.pop() == ctrl.CSI + "{0};{1}R".format(5, 1).encode("utf-8")
def test_cursor_position():
screen = Screen(10, 10)
# a) testing that we expect 1-indexed values
screen.cursor_position(5, 10)
assert (screen.cursor.y, screen.cursor.x) == (4, 9)
# b) but (0, 0) is also accepted and should be the same as (1, 1)
screen.cursor_position(0, 10)
assert (screen.cursor.y, screen.cursor.x) == (0, 9)
# c) moving outside the margins constrains to within the screen
# bounds
screen.cursor_position(100, 5)
assert (screen.cursor.y, screen.cursor.x) == (9, 4)
screen.cursor_position(5, 100)
assert (screen.cursor.y, screen.cursor.x) == (4, 9)
# d) DECOM on
screen.set_margins(5, 9)
screen.set_mode(mo.DECOM)
screen.cursor_position()
assert (screen.cursor.y, screen.cursor.x) == (4, 0)
screen.cursor_position(2, 0)
assert (screen.cursor.y, screen.cursor.x) == (5, 0)
# Note that cursor position doesn't change.
screen.cursor_position(10, 0)
assert (screen.cursor.y, screen.cursor.x) == (5, 0)
def test_clear_tabstops():
screen = Screen(10, 10)
screen.clear_tab_stop(3)
# a) clear a tabstop at current cusor location
screen.cursor.x = 1
screen.set_tab_stop()
screen.cursor.x = 5
screen.set_tab_stop()
screen.clear_tab_stop()
assert screen.tabstops == set([1])
screen.set_tab_stop()
screen.clear_tab_stop(0)
assert screen.tabstops == set([1])
# b) all tabstops
screen.set_tab_stop()
screen.cursor.x = 9
screen.set_tab_stop()
screen.clear_tab_stop(3)
assert not screen.tabstops
def test_remove_non_existant_attribute():
screen = Screen(2, 2)
assert screen == [[screen.default_char, screen.default_char]] * 2
screen.select_graphic_rendition(24) # underline-off.
assert screen == [[screen.default_char, screen.default_char]] * 2
assert not screen.cursor.attrs.underscore
def test_restore_cursor_with_none_saved():
screen = Screen(10, 10)
screen.set_mode(mo.DECOM)
screen.cursor.x, screen.cursor.y = 5, 5
screen.restore_cursor()
assert (screen.cursor.y, screen.cursor.x) == (0, 0)
assert mo.DECOM not in screen.mode
def test_draw_width0_irm():
screen = Screen(10, 1)
screen.set_mode(mo.IRM)
# The following should not insert any blanks.
screen.draw("\N{ZERO WIDTH SPACE}".encode("utf-8"))
screen.draw("\u0007".encode("utf-8")) # DELETE.
assert screen.display == [" " * screen.columns]
def test_backspace():
screen = Screen(2, 2)
assert screen.cursor.x == 0
screen.backspace()
assert screen.cursor.x == 0
screen.cursor.x = 1
screen.backspace()
assert screen.cursor.x == 0
def test_multi_attribs():
screen = Screen(2, 2)
assert screen == [[screen.default_char, screen.default_char]] * 2
screen.select_graphic_rendition(1)
screen.select_graphic_rendition(3)
assert screen.cursor.attrs.bold
assert screen.cursor.attrs.italics
def test_draw_cp437():
screen = Screen(5, 1)
assert screen.charset == 0
screen.define_charset(b"U", b"(")
screen.select_other_charset(b"@")
screen.draw("α ± ε".encode("cp437"))
assert screen.display == ["α ± ε"]
def test_unicode():
screen = Screen(4, 2)
stream = Stream(screen)
try:
stream.feed("тест".encode("utf-8"))
except UnicodeDecodeError:
pytest.fail("Check your code -- we do accept unicode.")
assert screen.display == ["тест", " "]
def test_private_report_device_attributes():
# Some console apps (e.g. ADOM) might add ``?`` to the DA request,
# even though the VT102/VT220 spec does not allow this.
screen = Screen(10, 10)
stream = Stream(screen)
acc = []
screen.write_process_input = acc.append
stream.feed(ctrl.CSI + b"?0c")
assert acc.pop() == ctrl.CSI + b"?6c"
def test_screen_set_icon_name_title():
screen = Screen(10, 1)
screen.select_other_charset(b"@")
text = "±"
screen.set_icon_name(text.encode("latin-1"))
assert screen.icon_name == text
screen.set_title(text.encode("latin-1"))
assert screen.title == text
def test_draw_width0_decawm_off():
screen = Screen(10, 1)
screen.reset_mode(mo.DECAWM)
screen.draw(" コンニチハ".encode("utf-8"))
assert screen.cursor.x == screen.columns
# The following should not advance the cursor.
screen.draw("\N{ZERO WIDTH SPACE}".encode("utf-8"))
screen.draw("\u0007".encode("utf-8")) # DELETE.
assert screen.cursor.x == screen.columns
def test_colors256():
screen = Screen(2, 2)
# a) OK-case.
screen.select_graphic_rendition(38, 5, 0)
screen.select_graphic_rendition(48, 5, 15)
assert screen.cursor.attrs.fg == "000000"
assert screen.cursor.attrs.bg == "ffffff"
# b) invalid color.
screen.select_graphic_rendition(48, 5, 100500)
def test_colors():
screen = Screen(2, 2)
screen.select_graphic_rendition(30)
screen.select_graphic_rendition(40)
assert screen.cursor.attrs.fg == "black"
assert screen.cursor.attrs.bg == "black"
screen.select_graphic_rendition(31)
assert screen.cursor.attrs.fg == "red"
assert screen.cursor.attrs.bg == "black"
def test_colors24bit():
screen = Screen(2, 2)
# a) OK-case
screen.select_graphic_rendition(38, 2, 0, 0, 0)
screen.select_graphic_rendition(48, 2, 255, 255, 255)
assert screen.cursor.attrs.fg == "000000"
assert screen.cursor.attrs.bg == "ffffff"
# b) invalid color.
screen.select_graphic_rendition(48, 2, 255)
def test_reset_resets_colors():
screen = Screen(2, 2)
assert screen == [[screen.default_char, screen.default_char]] * 2
screen.select_graphic_rendition(30)
screen.select_graphic_rendition(40)
assert screen.cursor.attrs.fg == "black"
assert screen.cursor.attrs.bg == "black"
screen.select_graphic_rendition(0)
assert screen.cursor.attrs == screen.default_char
def test_draw():
# ``DECAWM`` on (default).
screen = Screen(3, 3)
screen.set_mode(mo.LNM)
assert mo.DECAWM in screen.mode
for ch in "abc":
screen.draw(ch)
assert screen.display == ["abc", " ", " "]
assert (screen.cursor.y, screen.cursor.x) == (0, 3)
# ... one` more character -- now we got a linefeed!
screen.draw("a")
assert (screen.cursor.y, screen.cursor.x) == (1, 1)
# ``DECAWM`` is off.
screen = Screen(3, 3)
screen.reset_mode(mo.DECAWM)
for ch in "abc":
screen.draw(ch)
assert screen.display == ["abc", " ", " "]
assert (screen.cursor.y, screen.cursor.x) == (0, 3)
# No linefeed is issued on the end of the line ...
screen.draw("a")
assert screen.display == ["aba", " ", " "]
assert (screen.cursor.y, screen.cursor.x) == (0, 3)
# ``IRM`` mode is on, expecting new characters to move the old ones
# instead of replacing them.
screen.set_mode(mo.IRM)
screen.cursor_position()
screen.draw("x")
assert screen.display == ["xab", " ", " "]
screen.cursor_position()
screen.draw("y")
assert screen.display == ["yxa", " ", " "]
def test_colors_ignore_invalid():
screen = Screen(2, 2)
default_attrs = screen.cursor.attrs
screen.select_graphic_rendition(100500)
assert screen.cursor.attrs == default_attrs
screen.select_graphic_rendition(38, 100500)
assert screen.cursor.attrs == default_attrs
screen.select_graphic_rendition(48, 100500)
assert screen.cursor.attrs == default_attrs
def test_colors():
screen = Screen(2, 2)
assert screen == [[screen.default_char, screen.default_char]] * 2
screen.select_graphic_rendition(30) # black foreground
screen.select_graphic_rendition(40) # black background
assert screen.cursor.attrs.fg == "black"
assert screen.cursor.attrs.bg == "black"
screen.select_graphic_rendition(31) # red foreground
assert screen.cursor.attrs.fg == "red"
assert screen.cursor.attrs.bg == "black"
def test_colors_aixterm():
# See issue #57 on GitHub.
screen = Screen(2, 2)
# a) foreground color.
screen.select_graphic_rendition(94)
assert screen.cursor.attrs.fg == "blue"
assert screen.cursor.attrs.bold
# b) background color.
screen.select_graphic_rendition(104)
assert screen.cursor.attrs.bg == "blue"
assert screen.cursor.attrs.bold
def test_alignment_display():
screen = Screen(5, 5)
screen.set_mode(mo.LNM)
screen.draw(b"a")
screen.linefeed()
screen.linefeed()
screen.draw(b"b")
assert screen.display == ["a ", " ", "b ", " ", " "]
screen.alignment_display()
assert screen.display == ["EEEEE", "EEEEE", "EEEEE", "EEEEE", "EEEEE"]
def test_report_device_attributes():
screen = Screen(10, 10)
acc = []
screen.write_process_input = acc.append
# a) noop
screen.report_device_attributes(42)
assert not acc
# b) OK case
screen.report_device_attributes()
assert acc.pop() == ctrl.CSI + b"?6c"
def test_save_cursor():
# a) cursor position
screen = Screen(10, 10)
screen.save_cursor()
screen.cursor.x, screen.cursor.y = 3, 5
screen.save_cursor()
screen.cursor.x, screen.cursor.y = 4, 4
screen.restore_cursor()
assert screen.cursor.x == 3
assert screen.cursor.y == 5
screen.restore_cursor()
assert screen.cursor.x == 0
assert screen.cursor.y == 0
# b) modes
screen = Screen(10, 10)
screen.set_mode(mo.DECAWM, mo.DECOM)
screen.save_cursor()
screen.reset_mode(mo.DECAWM)
screen.restore_cursor()
assert mo.DECAWM in screen.mode
assert mo.DECOM in screen.mode
# c) attributes
screen = Screen(10, 10)
screen.select_graphic_rendition(4)
screen.save_cursor()
screen.select_graphic_rendition(24)
assert screen.cursor.attrs == screen.default_char
screen.restore_cursor()
assert screen.cursor.attrs != screen.default_char
assert screen.cursor.attrs == Char(" ", underscore=True)
def test_attributes():
screen = Screen(2, 2)
assert screen.buffer == [[screen.default_char, screen.default_char]] * 2
screen.select_graphic_rendition(1) # bold.
# Still default, since we haven't written anything.
assert screen.buffer == [[screen.default_char, screen.default_char]] * 2
assert screen.cursor.attrs.bold
screen.draw(b"f")
assert screen.buffer == [[
Char("f", "default", "default", bold=True), screen.default_char
], [screen.default_char, screen.default_char]]
def test_hide_cursor():
screen = Screen(10, 10)
# DECTCEM is set by default.
assert mo.DECTCEM in screen.mode
assert not screen.cursor.hidden
# a) resetting DECTCEM hides the cursor.
screen.reset_mode(mo.DECTCEM)
assert screen.cursor.hidden
# b) ... and it's back!
screen.set_mode(mo.DECTCEM)
assert not screen.cursor.hidden
