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"""Tests for keyboard support."""
# std imports
import io
import os
import platform
import sys
import tempfile
from unittest import mock
# 3rd party
import pytest
# local
from .conftest import IS_WINDOWS
from .accessories import TestTerminal, as_subprocess
# isort: off
if platform.system() != 'Windows':
import tty # pylint: disable=unused-import # NOQA
import curses
else:
import jinxed as curses # pylint: disable=import-error
@pytest.mark.skipif(IS_WINDOWS, reason="no tty module")
def test_break_input_no_kb():
"""cbreak() should not call tty.setcbreak() without keyboard."""
@as_subprocess
def child():
with tempfile.NamedTemporaryFile() as stream:
term = TestTerminal(stream=stream)
with mock.patch("tty.setcbreak") as mock_setcbreak:
with term.cbreak():
assert not mock_setcbreak.called
assert term._keyboard_fd is None
child()
@pytest.mark.skipif(IS_WINDOWS, reason="no tty module")
def test_raw_input_no_kb():
"""raw should not call tty.setraw() without keyboard."""
@as_subprocess
def child():
with tempfile.NamedTemporaryFile() as stream:
term = TestTerminal(stream=stream)
with mock.patch("tty.setraw") as mock_setraw:
with term.raw():
assert not mock_setraw.called
assert term._keyboard_fd is None
child()
@pytest.mark.skipif(IS_WINDOWS, reason="no tty module")
def test_raw_input_with_kb():
"""raw should call tty.setraw() when with keyboard."""
@as_subprocess
def child():
term = TestTerminal()
assert term._keyboard_fd is not None
with mock.patch("tty.setraw") as mock_setraw:
with term.raw():
assert mock_setraw.called
child()
def test_stdout_notty_kb_is_None():
"""term._keyboard_fd should be None when os.isatty returns False for output."""
# In this scenario, stream is sys.__stdout__, but os.isatty(1) is False
# such as when piping output to less(1)
@as_subprocess
def child():
isatty = os.isatty
with mock.patch('os.isatty') as mock_isatty:
mock_isatty.side_effect = (
lambda fd: False if fd == sys.__stdout__.fileno() else isatty(fd))
term = TestTerminal()
assert term._keyboard_fd is None
# pylint: disable=use-a-generator
assert any(['stream not a TTY' in err
for err in term.errors]), term.errors
child()
def test_stdin_fileno_is_None():
"""term._keyboard_fd should be None when stdin.fileno() raises an exception."""
@as_subprocess
def child():
with mock.patch.object(sys.__stdin__, 'fileno') as mock_fileno:
mock_fileno.side_effect = ValueError('fileno is not implemented on this stream')
term = TestTerminal()
assert term._keyboard_fd is None
# pylint: disable=use-a-generator
assert any(['fileno is not implemented on this stream' in err
for err in term.errors])
child()
def test_stdin_as_bytesio_is_None():
"""term._keyboard_fd should be None when sys.__stdin__.fileno() raises exception."""
# In this scenario, stream is sys.__stdout__, but sys.__stdin__ is BytesIO
# This may happen in a test scenario or when the program is wrapped in another interface
@as_subprocess
def child():
with mock.patch('sys.__stdin__', new=io.BytesIO()):
term = TestTerminal()
assert term._keyboard_fd is None
# pylint: disable=use-a-generator
assert any([err.startswith('Unable to determine input stream file descriptor')
for err in term.errors])
child()
def test_stdin_notty_kb_is_None():
"""term._keyboard_fd should be None when os.isatty returns False for input."""
# In this scenario, stream is sys.__stdout__, but os.isatty(0) is False,
# such as when piping from another program
@as_subprocess
def child():
isatty = os.isatty
with mock.patch('os.isatty') as mock_isatty:
mock_isatty.side_effect = (
lambda fd:
True if fd == sys.__stdout__.fileno()
else False if fd == sys.__stdin__.fileno()
else isatty(fd)
)
term = TestTerminal()
assert term._keyboard_fd is None
assert 'Input stream is not a TTY' in term.errors
child()
def test_keystroke_default_args():
"""Test keyboard.Keystroke constructor with default arguments."""
from blessed.keyboard import Keystroke
ks = Keystroke()
assert ks._name is None
assert ks.name == ks._name
assert ks._code is None
assert ks.code == ks._code
assert f'x{ks}' == 'x'
assert not ks.is_sequence
assert repr(ks) == "''"
def test_a_keystroke():
"""Test keyboard.Keystroke constructor with set arguments."""
from blessed.keyboard import Keystroke
ks = Keystroke(ucs='x', code=1, name='the X')
assert ks._name == 'the X'
assert ks.name == ks._name
assert ks._code == 1
assert ks.code == ks._code
assert f'x{ks}' == 'xx'
assert ks.is_sequence
assert repr(ks) == "the X"
def test_get_keyboard_codes():
"""Test all values returned by get_keyboard_codes are from curses."""
import blessed.keyboard
exemptions = dict(blessed.keyboard.CURSES_KEYCODE_OVERRIDE_MIXIN)
# Add PUA overrides to exemptions since they intentionally override curses keys
exemptions.update(blessed.keyboard.KITTY_PUA_KEYCODE_OVERRIDE_MIXIN)
# List of homemade keycodes that are not in curses
homemade_keycodes = ('TAB', 'KP_MULTIPLY', 'KP_ADD', 'KP_SEPARATOR',
'KP_SUBTRACT', 'KP_DECIMAL', 'KP_DIVIDE', 'KP_EQUAL',
'KP_0', 'KP_1', 'KP_2', 'KP_3', 'KP_4', 'KP_5',
'KP_6', 'KP_7', 'KP_8', 'KP_9', 'MENU',
# Kitty protocol PUA keycodes
'KP_0', 'KP_1', 'KP_2', 'KP_3', 'KP_4',
'KP_5', 'KP_6', 'KP_7', 'KP_8', 'KP_9',
'KP_DECIMAL', 'KP_DIVIDE', 'KP_MULTIPLY',
'KP_SUBTRACT', 'KP_ADD', 'KP_ENTER', 'KP_EQUAL',
'KP_SEPARATOR', 'KP_LEFT', 'KP_RIGHT', 'KP_UP',
'KP_DOWN', 'KP_PAGE_UP', 'KP_PAGE_DOWN', 'KP_HOME',
'KP_END', 'KP_INSERT', 'KP_DELETE', 'KP_BEGIN',
# Lock and special function keys
'CAPS_LOCK', 'SCROLL_LOCK', 'NUM_LOCK',
'PRINT_SCREEN', 'PAUSE', 'MENU',
# Extended F-keys F13-F35 may exist in curses on some systems
# Only list those that don't exist in curses as "homemade"
# Media control keys
'MEDIA_PLAY', 'MEDIA_PAUSE', 'MEDIA_PLAY_PAUSE',
'MEDIA_REVERSE', 'MEDIA_STOP', 'MEDIA_FAST_FORWARD',
'MEDIA_REWIND', 'MEDIA_TRACK_NEXT', 'MEDIA_TRACK_PREVIOUS',
'MEDIA_RECORD', 'LOWER_VOLUME', 'RAISE_VOLUME',
'MUTE_VOLUME',
# ISO level shift keys
'ISO_LEVEL3_SHIFT', 'ISO_LEVEL5_SHIFT',
# Modifier keys
'LEFT_SHIFT', 'LEFT_CONTROL', 'LEFT_ALT', 'LEFT_SUPER',
'LEFT_HYPER', 'LEFT_META', 'RIGHT_SHIFT', 'RIGHT_CONTROL',
'RIGHT_ALT', 'RIGHT_SUPER', 'RIGHT_HYPER', 'RIGHT_META')
for value, keycode in blessed.keyboard.get_keyboard_codes().items():
if keycode in exemptions:
assert value == exemptions[keycode]
continue
if keycode[4:] in homemade_keycodes:
assert not hasattr(curses, keycode)
assert hasattr(blessed.keyboard, keycode)
assert getattr(blessed.keyboard, keycode) == value
else:
assert hasattr(curses, keycode)
assert getattr(curses, keycode) == value
def test_alternative_left_right():
"""Test _alternative_left_right behavior for space/backspace."""
from blessed.keyboard import _alternative_left_right
term = mock.Mock()
term._cuf1 = ''
term._cub1 = ''
assert not bool(_alternative_left_right(term))
term._cuf1 = ' '
term._cub1 = '\b'
assert not bool(_alternative_left_right(term))
term._cuf1 = 'seq-right'
term._cub1 = 'seq-left'
assert (_alternative_left_right(term) == {
'seq-right': curses.KEY_RIGHT,
'seq-left': curses.KEY_LEFT})
def test_cuf1_and_cub1_as_RIGHT_LEFT(all_terms):
"""Test that cuf1 and cub1 are assigned KEY_RIGHT and KEY_LEFT."""
from blessed.keyboard import get_keyboard_sequences
@as_subprocess
def child(kind):
term = TestTerminal(kind=kind, force_styling=True)
keymap = get_keyboard_sequences(term)
if term._cuf1:
assert term._cuf1 in keymap
assert keymap[term._cuf1] == term.KEY_RIGHT
if term._cub1:
assert term._cub1 in keymap
if term._cub1 == '\b':
assert keymap[term._cub1] == term.KEY_BACKSPACE
else:
assert keymap[term._cub1] == term.KEY_LEFT
child(all_terms)
def test_get_keyboard_sequences_sort_order():
"""ordereddict ensures sequences are ordered longest-first."""
@as_subprocess
def child(kind):
term = TestTerminal(kind=kind, force_styling=True)
maxlen = None
for sequence in term._keymap:
if maxlen is not None:
assert len(sequence) <= maxlen
assert sequence
maxlen = len(sequence)
kind = 'vtwin10' if IS_WINDOWS else 'xterm-256color'
child(kind)
def test_get_keyboard_sequence(monkeypatch):
"""Test keyboard.get_keyboard_sequence."""
import blessed.keyboard
(KEY_SMALL, KEY_LARGE, KEY_MIXIN) = range(3)
(CAP_SMALL, CAP_LARGE) = 'cap-small cap-large'.split()
(SEQ_SMALL, SEQ_LARGE, SEQ_MIXIN, SEQ_ALT_CUF1, SEQ_ALT_CUB1) = (
b'seq-small-a',
b'seq-large-abcdefg',
b'seq-mixin',
b'seq-alt-cuf1',
b'seq-alt-cub1_')
# patch curses functions
monkeypatch.setattr(curses, 'tigetstr',
lambda cap: {CAP_SMALL: SEQ_SMALL,
CAP_LARGE: SEQ_LARGE}[cap])
monkeypatch.setattr(blessed.keyboard, 'capability_names',
dict(((KEY_SMALL, CAP_SMALL,),
(KEY_LARGE, CAP_LARGE,))))
# patch global sequence mix-in
monkeypatch.setattr(blessed.keyboard,
'DEFAULT_SEQUENCE_MIXIN', (
(SEQ_MIXIN.decode('latin1'), KEY_MIXIN),))
# patch for _alternative_left_right
term = mock.Mock()
term._cuf1 = SEQ_ALT_CUF1.decode('latin1')
term._cub1 = SEQ_ALT_CUB1.decode('latin1')
keymap = blessed.keyboard.get_keyboard_sequences(term)
assert list(keymap.items()) == [
(SEQ_LARGE.decode('latin1'), KEY_LARGE),
(SEQ_ALT_CUB1.decode('latin1'), curses.KEY_LEFT),
(SEQ_ALT_CUF1.decode('latin1'), curses.KEY_RIGHT),
(SEQ_SMALL.decode('latin1'), KEY_SMALL),
(SEQ_MIXIN.decode('latin1'), KEY_MIXIN)]
def test_resolve_sequence_order():
"""Test resolve_sequence for order-dependent mapping."""
from blessed.keyboard import resolve_sequence, OrderedDict
mapper = OrderedDict((('SEQ1', 1),
('SEQ2', 2),
# takes precedence over LONGSEQ, first-match
('LONGSEQ', 4),
# won't match, LONGSEQ is first-match in this order
('LONGSEQ_longer', 5),
# falls through for L{anything_else}
('L', 6)))
codes = {1: 'KEY_SEQ1',
2: 'KEY_SEQ2',
3: 'KEY_LONGSEQ_longest',
4: 'KEY_LONGSEQ',
5: 'KEY_LONGSEQ_longer',
6: 'KEY_L'}
ks = resolve_sequence('', mapper, codes)
assert ks == ''
assert ks.name is None
assert ks.code is None
assert ks.mode is None
assert not ks.is_sequence
assert repr(ks) == "''"
ks = resolve_sequence('notfound', mapper=mapper, codes=codes)
assert ks == 'n'
assert ks.name is None
assert ks.code is None
assert ks.mode is None
assert not ks.is_sequence
assert repr(ks) == "'n'"
ks = resolve_sequence('SEQ1', mapper, codes)
assert ks == 'SEQ1'
assert ks.name == 'KEY_SEQ1'
assert ks.code == 1
assert ks.is_sequence
assert ks.mode is None
assert repr(ks) == "KEY_SEQ1"
ks = resolve_sequence('LONGSEQ_longer', mapper, codes)
assert ks == 'LONGSEQ'
assert ks.name == 'KEY_LONGSEQ'
assert ks.code == 4
assert ks.is_sequence
assert ks.mode is None
assert repr(ks) == "KEY_LONGSEQ"
ks = resolve_sequence('LONGSEQ', mapper, codes)
assert ks == 'LONGSEQ'
assert ks.name == 'KEY_LONGSEQ'
assert ks.code == 4
assert ks.is_sequence
assert ks.mode is None
assert repr(ks) == "KEY_LONGSEQ"
ks = resolve_sequence('Lxxxxx', mapper, codes)
assert ks == 'L'
assert ks.name == 'KEY_L'
assert ks.code == 6
assert ks.is_sequence
assert ks.mode is None
assert repr(ks) == "KEY_L"
def test_keyboard_prefixes():
"""Test keyboard.prefixes."""
from blessed.keyboard import get_leading_prefixes
keys = ['abc', 'abdf', 'e', 'jkl']
pfs = get_leading_prefixes(keys)
assert pfs == {'a', 'ab', 'abd', 'j', 'jk'}
@pytest.mark.skipif(IS_WINDOWS, reason="not applicable")
def test_keypad_mixins_and_aliases():
"""Test PC-Style function key translations, including ``keypad`` mode."""
# Key plain app modified
# Up ^[[A ^[OA ^[[1;mA
# Down ^[[B ^[OB ^[[1;mB
# Right ^[[C ^[OC ^[[1;mC
# Left ^[[D ^[OD ^[[1;mD
# End ^[[F ^[OF ^[[1;mF
# Home ^[[H ^[OH ^[[1;mH
# pylint: disable=too-many-statements
@as_subprocess
def child(kind):
term = TestTerminal(kind=kind, force_styling=True)
term.ungetch(chr(10))
assert term.inkey(timeout=0).name == "KEY_ENTER"
term.ungetch(chr(13))
assert term.inkey(timeout=0).name == "KEY_ENTER"
term.ungetch(chr(8))
assert term.inkey(timeout=0).name == "KEY_BACKSPACE"
term.ungetch(chr(9))
assert term.inkey(timeout=0).name == "KEY_TAB"
term.ungetch(chr(27))
assert term.inkey(timeout=0).name == "KEY_ESCAPE"
term.ungetch(chr(127))
assert term.inkey(timeout=0).name == "KEY_BACKSPACE"
term.ungetch("\x1b[A")
assert term.inkey(timeout=0).name == "KEY_UP"
term.ungetch("\x1b[B")
assert term.inkey(timeout=0).name == "KEY_DOWN"
term.ungetch("\x1b[C")
assert term.inkey(timeout=0).name == "KEY_RIGHT"
term.ungetch("\x1b[D")
assert term.inkey(timeout=0).name == "KEY_LEFT"
term.ungetch("\x1b[E")
assert term.inkey(timeout=0).name == "KEY_CENTER"
term.ungetch("\x1b[U")
assert term.inkey(timeout=0).name == "KEY_PGDOWN"
term.ungetch("\x1b[V")
assert term.inkey(timeout=0).name == "KEY_PGUP"
term.ungetch("\x1b[H")
assert term.inkey(timeout=0).name == "KEY_HOME"
term.ungetch("\x1b[F")
assert term.inkey(timeout=0).name == "KEY_END"
term.ungetch("\x1b[K")
assert term.inkey(timeout=0).name == "KEY_END"
term.ungetch("\x1bOM")
assert term.inkey(timeout=0).name == "KEY_ENTER"
term.ungetch("\x1bOj")
assert term.inkey(timeout=0).name == "KEY_KP_MULTIPLY"
term.ungetch("\x1bOk")
assert term.inkey(timeout=0).name == "KEY_KP_ADD"
term.ungetch("\x1bOl")
assert term.inkey(timeout=0).name == "KEY_KP_SEPARATOR"
term.ungetch("\x1bOm")
assert term.inkey(timeout=0).name == "KEY_KP_SUBTRACT"
term.ungetch("\x1bOn")
assert term.inkey(timeout=0).name == "KEY_KP_DECIMAL"
term.ungetch("\x1bOo")
assert term.inkey(timeout=0).name == "KEY_KP_DIVIDE"
term.ungetch("\x1bOX")
assert term.inkey(timeout=0).name == "KEY_KP_EQUAL"
term.ungetch("\x1bOp")
assert term.inkey(timeout=0).name == "KEY_KP_0"
term.ungetch("\x1bOq")
assert term.inkey(timeout=0).name == "KEY_KP_1"
term.ungetch("\x1bOr")
assert term.inkey(timeout=0).name == "KEY_KP_2"
term.ungetch("\x1bOs")
assert term.inkey(timeout=0).name == "KEY_KP_3"
term.ungetch("\x1bOt")
assert term.inkey(timeout=0).name == "KEY_KP_4"
term.ungetch("\x1bOu")
assert term.inkey(timeout=0).name == "KEY_KP_5"
term.ungetch("\x1bOv")
assert term.inkey(timeout=0).name == "KEY_KP_6"
term.ungetch("\x1bOw")
assert term.inkey(timeout=0).name == "KEY_KP_7"
term.ungetch("\x1bOx")
assert term.inkey(timeout=0).name == "KEY_KP_8"
term.ungetch("\x1bOy")
assert term.inkey(timeout=0).name == "KEY_KP_9"
term.ungetch("\x1b[1~")
assert term.inkey(timeout=0).name == "KEY_HOME"
term.ungetch("\x1b[2~")
assert term.inkey(timeout=0).name == "KEY_INSERT"
term.ungetch("\x1b[3~")
assert term.inkey(timeout=0).name == "KEY_DELETE"
term.ungetch("\x1b[4~")
assert term.inkey(timeout=0).name == "KEY_END"
term.ungetch("\x1b[5~")
assert term.inkey(timeout=0).name == "KEY_PGUP"
term.ungetch("\x1b[6~")
assert term.inkey(timeout=0).name == "KEY_PGDOWN"
term.ungetch("\x1b[7~")
assert term.inkey(timeout=0).name == "KEY_HOME"
term.ungetch("\x1b[8~")
assert term.inkey(timeout=0).name == "KEY_END"
term.ungetch("\x1b[OA")
assert term.inkey(timeout=0).name == "KEY_UP"
term.ungetch("\x1b[OB")
assert term.inkey(timeout=0).name == "KEY_DOWN"
term.ungetch("\x1b[OC")
assert term.inkey(timeout=0).name == "KEY_RIGHT"
term.ungetch("\x1b[OD")
assert term.inkey(timeout=0).name == "KEY_LEFT"
term.ungetch("\x1b[OF")
assert term.inkey(timeout=0).name == "KEY_END"
term.ungetch("\x1b[OH")
assert term.inkey(timeout=0).name == "KEY_HOME"
term.ungetch("\x1bOP")
assert term.inkey(timeout=0).name == "KEY_F1"
term.ungetch("\x1bOQ")
assert term.inkey(timeout=0).name == "KEY_F2"
term.ungetch("\x1bOR")
assert term.inkey(timeout=0).name == "KEY_F3"
term.ungetch("\x1bOS")
assert term.inkey(timeout=0).name == "KEY_F4"
child('xterm')
@pytest.mark.skipif(IS_WINDOWS, reason="not applicable")
def test_kp_begin_center_key():
"""Test KP_BEGIN/center key (numpad 5) with modifiers and event types."""
@as_subprocess
def child(kind):
term = TestTerminal(kind=kind, force_styling=True)
term.ungetch('\x1b[E')
ks = term.inkey(timeout=0)
assert ks and str(ks) == '\x1b[E'
assert ks.code == curses.KEY_B2
assert ks.name == 'KEY_CENTER'
term.ungetch('\x1b[1;5E')
ks = term.inkey(timeout=0)
assert ks and str(ks) == '\x1b[1;5E'
assert ks.code == curses.KEY_B2
assert ks.name == 'KEY_CTRL_CENTER'
term.ungetch('\x1b[1;3E')
ks = term.inkey(timeout=0)
assert ks and str(ks) == '\x1b[1;3E'
assert ks.code == curses.KEY_B2
assert ks.name == 'KEY_ALT_CENTER'
term.ungetch('\x1b[1;7E')
ks = term.inkey(timeout=0)
assert ks and str(ks) == '\x1b[1;7E'
assert ks.code == curses.KEY_B2
assert ks.name == 'KEY_CTRL_ALT_CENTER'
child('xterm')
def test_ESCDELAY_unset_unchanged():
"""Unset ESCDELAY leaves DEFAULT_ESCDELAY unchanged in _reinit_escdelay()."""
if 'ESCDELAY' in os.environ:
del os.environ['ESCDELAY']
import blessed.keyboard
prev_value = blessed.keyboard.DEFAULT_ESCDELAY
blessed.keyboard._reinit_escdelay()
assert blessed.keyboard.DEFAULT_ESCDELAY == prev_value
def test_ESCDELAY_bad_value_unchanged():
"""Invalid ESCDELAY leaves DEFAULT_ESCDELAY unchanged in _reinit_escdelay()."""
os.environ['ESCDELAY'] = 'XYZ123!'
import blessed.keyboard
prev_value = blessed.keyboard.DEFAULT_ESCDELAY
blessed.keyboard._reinit_escdelay()
assert blessed.keyboard.DEFAULT_ESCDELAY == prev_value
del os.environ['ESCDELAY']
def test_ESCDELAY_10ms():
"""Verify ESCDELAY modifies DEFAULT_ESCDELAY in _reinit_escdelay()."""
os.environ['ESCDELAY'] = '1234'
import blessed.keyboard
blessed.keyboard._reinit_escdelay()
assert blessed.keyboard.DEFAULT_ESCDELAY == 1.234
del os.environ['ESCDELAY']
def test_unsupported_high_byte_metasendsescape():
"""Test ESC + high-byte character (> 126) defaults to no modifiers."""
# this library does not support the (very legacy) alt sends 8th bit high
from blessed.keyboard import Keystroke
ks = Keystroke('\x1b\x80') # ESC + char with code 128
assert ks.modifiers == 1 # No modifiers detected
assert len(ks) == 2
# Another high byte
ks = Keystroke('\x1b\xff') # ESC + char with code 255
assert ks.modifiers == 1 # No modifiers detected
def test_is_incomplete_keystroke():
"""Test _is_incomplete_keystroke private method."""
@as_subprocess
def child():
term = TestTerminal(force_styling=True)
# Case 1: Exact match - text is a known prefix
assert term._is_incomplete_keystroke('\x1b[')
assert term._is_incomplete_keystroke('\x1b[1')
assert term._is_incomplete_keystroke('\x1b[15')
# Case 2: Building toward - text is a partial match for a longer prefix
# '\x1b' is building toward '\x1b[', '\x1b[1', '\x1b[15', etc.
assert term._is_incomplete_keystroke('\x1b')
# Case 3: Extending beyond - text starts with a known prefix but continues
# '\x1b[15~' completes to F5, but '\x1b[15~x' extends beyond the prefix '\x1b[15'
# this is for 'bracketed paste' and really really long sequences
assert term._is_incomplete_keystroke('\x1b[15~xxx')
assert term._is_incomplete_keystroke('\x1b[200~data')
# Case 4: No match - text doesn't relate to any known prefix
assert not term._is_incomplete_keystroke('')
assert not term._is_incomplete_keystroke('x')
assert not term._is_incomplete_keystroke('xyz')
child()
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