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input-remapper/tests/testcases/test_reader.py

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#!/usr/bin/python3
# -*- coding: utf-8 -*-
# key-mapper - GUI for device specific keyboard mappings
# Copyright (C) 2021 sezanzeb <proxima@hip70890b.de>
#
# This file is part of key-mapper.
#
# key-mapper is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# key-mapper is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with key-mapper. If not, see <https://www.gnu.org/licenses/>.
import unittest
import time
import multiprocessing
from evdev.ecodes import EV_KEY, EV_ABS, ABS_HAT0X, ABS_HAT0Y, KEY_COMMA, \
BTN_LEFT, BTN_TOOL_DOUBLETAP, ABS_Z, ABS_Y, ABS_MISC, KEY_A, \
EV_REL, REL_WHEEL, REL_X, ABS_X, ABS_RZ
from keymapper.dev.reader import keycode_reader, will_report_up, \
event_unix_time
from keymapper.state import custom_mapping
from keymapper.config import BUTTONS, MOUSE
from keymapper.key import Key
from tests.test import new_event, pending_events, EVENT_READ_TIMEOUT, \
cleanup, MAX_ABS
CODE_1 = 100
CODE_2 = 101
CODE_3 = 102
def wait(func, timeout=1.0):
"""Wait for func to return True."""
iterations = 0
sleepytime = 0.1
while not func():
time.sleep(sleepytime)
iterations += 1
if iterations * sleepytime > timeout:
break
class TestReader(unittest.TestCase):
def setUp(self):
# verify that tearDown properly cleared the reader
self.assertEqual(keycode_reader.read(), None)
def tearDown(self):
cleanup()
def test_will_report_up(self):
self.assertFalse(will_report_up(EV_REL))
self.assertTrue(will_report_up(EV_ABS))
self.assertTrue(will_report_up(EV_KEY))
def test_event_unix_time(self):
event = new_event(1, 1, 1, 1234.5678)
self.assertEqual(event_unix_time(event), 1234.5678)
self.assertEqual(event_unix_time(None), 0)
def test_reading_1(self):
# a single event
pending_events['device 1'] = [
new_event(EV_ABS, ABS_HAT0X, 1),
new_event(EV_REL, REL_X, 1), # mouse movements are ignored
]
keycode_reader.start_reading('device 1')
wait(keycode_reader._pipe[0].poll, 0.5)
self.assertEqual(keycode_reader.read(), (EV_ABS, ABS_HAT0X, 1))
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 1)
def test_reading_wheel(self):
# will be treated as released automatically at some point
keycode_reader.start_reading('device 1')
keycode_reader._pipe[1].send(new_event(EV_REL, REL_WHEEL, 0))
self.assertIsNone(keycode_reader.read())
keycode_reader._pipe[1].send(new_event(EV_REL, REL_WHEEL, 1))
result = keycode_reader.read()
self.assertIsInstance(result, Key)
self.assertEqual(result, (EV_REL, REL_WHEEL, 1))
self.assertEqual(result, ((EV_REL, REL_WHEEL, 1),))
self.assertNotEqual(result, ((EV_REL, REL_WHEEL, 1), (1, 1, 1)))
self.assertEqual(result.keys, ((EV_REL, REL_WHEEL, 1),))
# it won't return the same event twice
self.assertEqual(keycode_reader.read(), None)
# but it is still remembered unreleased
self.assertEqual(len(keycode_reader._unreleased), 1)
self.assertEqual(keycode_reader.get_unreleased_keys(), (EV_REL, REL_WHEEL, 1))
self.assertIsInstance(keycode_reader.get_unreleased_keys(), Key)
# as long as new wheel events arrive, it is considered unreleased
for _ in range(10):
keycode_reader._pipe[1].send(new_event(EV_REL, REL_WHEEL, 1))
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 1)
# read a few more times, at some point it is treated as unreleased
for _ in range(4):
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 0)
self.assertIsNone(keycode_reader.get_unreleased_keys())
"""combinations"""
keycode_reader._pipe[1].send(new_event(EV_REL, REL_WHEEL, 1, 1000))
keycode_reader._pipe[1].send(new_event(EV_KEY, KEY_COMMA, 1, 1001))
combi_1 = ((EV_REL, REL_WHEEL, 1), (EV_KEY, KEY_COMMA, 1))
combi_2 = ((EV_KEY, KEY_COMMA, 1), (EV_KEY, KEY_A, 1))
read = keycode_reader.read()
self.assertEqual(read, combi_1)
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 2)
self.assertEqual(keycode_reader.get_unreleased_keys(), combi_1)
# don't send new wheel down events, it should get released again
i = 0
while len(keycode_reader._unreleased) == 2:
read = keycode_reader.read()
if i == 100:
raise AssertionError('Did not release the wheel')
i += 1
# and only the comma remains. However, a changed combination is
# only returned when a new key is pressed. Only then the pressed
# down keys are collected in a new Key object.
self.assertEqual(read, None)
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 1)
self.assertEqual(keycode_reader.get_unreleased_keys(), combi_1[1])
# press down a new key, now it will return a different combination
keycode_reader._pipe[1].send(new_event(EV_KEY, KEY_A, 1, 1002))
self.assertEqual(keycode_reader.read(), combi_2)
self.assertEqual(len(keycode_reader._unreleased), 2)
# release all of them
keycode_reader._pipe[1].send(new_event(EV_KEY, KEY_COMMA, 0))
keycode_reader._pipe[1].send(new_event(EV_KEY, KEY_A, 0))
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 0)
self.assertEqual(keycode_reader.get_unreleased_keys(), None)
def test_change_wheel_direction(self):
# not just wheel, anything that suddenly reports a different value.
# as long as type and code are equal its the same key, so there is no
# way both directions can be held down.
keycode_reader.start_reading('device 1')
keycode_reader._pipe[1].send(new_event(1234, 2345, 1))
self.assertEqual(keycode_reader.read(), (1234, 2345, 1))
self.assertEqual(len(keycode_reader._unreleased), 1)
self.assertEqual(keycode_reader.read(), None)
keycode_reader._pipe[1].send(new_event(1234, 2345, -1))
self.assertEqual(keycode_reader.read(), (1234, 2345, -1))
# notice that this is no combination of two sides, the previous
# entry in unreleased has to get overwritten. So there is still only
# one element in it.
self.assertEqual(len(keycode_reader._unreleased), 1)
self.assertEqual(keycode_reader.read(), None)
def test_stop_reading(self):
keycode_reader.start_reading('device 1')
time.sleep(0.1)
self.assertTrue(keycode_reader._process.is_alive())
keycode_reader.stop_reading()
time.sleep(0.1)
self.assertFalse(keycode_reader._process.is_alive())
self.assertEqual(keycode_reader.read(), None)
def test_reading_2(self):
# a combination of events
pending_events['device 1'] = [
new_event(EV_KEY, CODE_1, 1, 10000.1234),
new_event(EV_KEY, CODE_3, 1, 10001.1234),
new_event(EV_ABS, ABS_HAT0X, -1, 10002.1234)
]
keycode_reader.start_reading('device 1')
# sending anything arbitrary does not stop the pipe
keycode_reader._pipe[0].send(856794)
wait(keycode_reader._pipe[0].poll, 0.5)
self.assertEqual(keycode_reader.read(), (
(EV_KEY, CODE_1, 1),
(EV_KEY, CODE_3, 1),
(EV_ABS, ABS_HAT0X, -1)
))
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 3)
def test_reading_3(self):
# a combination of events via the pipe with reads inbetween
keycode_reader.start_reading('device 1')
pipe = keycode_reader._pipe
pipe[1].send(new_event(EV_KEY, CODE_1, 1, 1001))
self.assertEqual(keycode_reader.read(), (
(EV_KEY, CODE_1, 1)
))
pipe[1].send(new_event(EV_ABS, ABS_Y, 1, 1002))
self.assertEqual(keycode_reader.read(), (
(EV_KEY, CODE_1, 1),
(EV_ABS, ABS_Y, 1)
))
pipe[1].send(new_event(EV_ABS, ABS_HAT0X, -1, 1003))
self.assertEqual(keycode_reader.read(), (
(EV_KEY, CODE_1, 1),
(EV_ABS, ABS_Y, 1),
(EV_ABS, ABS_HAT0X, -1)
))
# adding duplicate down events won't report a different combination.
# import for triggers, as they keep reporting more down-events before
# they are released
pipe[1].send(new_event(EV_ABS, ABS_Y, 1, 1005))
self.assertEqual(keycode_reader.read(), None)
pipe[1].send(new_event(EV_ABS, ABS_HAT0X, -1, 1006))
self.assertEqual(keycode_reader.read(), None)
pipe[1].send(new_event(EV_KEY, CODE_1, 0, 1004))
read = keycode_reader.read()
self.assertEqual(read, None)
pipe[1].send(new_event(EV_ABS, ABS_Y, 0, 1007))
self.assertEqual(keycode_reader.read(), None)
pipe[1].send(new_event(EV_KEY, ABS_HAT0X, 0, 1008))
self.assertEqual(keycode_reader.read(), None)
def test_reads_joysticks(self):
# if their purpose is "buttons"
custom_mapping.set('gamepad.joystick.left_purpose', BUTTONS)
pending_events['gamepad'] = [
new_event(EV_ABS, ABS_Y, MAX_ABS),
# the value of that one is interpreted as release, because
# it is too small
new_event(EV_ABS, ABS_X, MAX_ABS // 10)
]
keycode_reader.start_reading('gamepad')
wait(keycode_reader._pipe[0].poll, 0.5)
self.assertEqual(keycode_reader.read(), (EV_ABS, ABS_Y, 1))
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 1)
keycode_reader._unreleased = {}
custom_mapping.set('gamepad.joystick.left_purpose', MOUSE)
pending_events['gamepad'] = [
new_event(EV_ABS, ABS_Y, MAX_ABS)
]
keycode_reader.start_reading('gamepad')
time.sleep(0.1)
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 0)
def test_combine_triggers(self):
pipe = multiprocessing.Pipe()
keycode_reader._pipe = pipe
i = 0
def next_timestamp():
nonlocal i
i += 1
return 100 * i
# based on an observed bug
pipe[1].send(new_event(3, 1, 0, next_timestamp()))
pipe[1].send(new_event(3, 0, 0, next_timestamp()))
pipe[1].send(new_event(3, 2, 1, next_timestamp()))
self.assertEqual(keycode_reader.read(), (EV_ABS, ABS_Z, 1))
pipe[1].send(new_event(3, 0, 0, next_timestamp()))
pipe[1].send(new_event(3, 5, 1, next_timestamp()))
self.assertEqual(keycode_reader.read(), ((EV_ABS, ABS_Z, 1), (EV_ABS, ABS_RZ, 1)))
pipe[1].send(new_event(3, 5, 0, next_timestamp()))
pipe[1].send(new_event(3, 0, 0, next_timestamp()))
pipe[1].send(new_event(3, 1, 0, next_timestamp()))
self.assertEqual(keycode_reader.read(), None)
pipe[1].send(new_event(3, 2, 1, next_timestamp()))
pipe[1].send(new_event(3, 1, 0, next_timestamp()))
pipe[1].send(new_event(3, 0, 0, next_timestamp()))
# due to not properly handling the duplicate down event it cleared
# the combination and returned it. Instead it should report None
# and by doing that keep the previous combination.
self.assertEqual(keycode_reader.read(), None)
def test_ignore_btn_left(self):
# click events are ignored because overwriting them would render the
# mouse useless, but a mouse is needed to stop the injection
# comfortably. Furthermore, reading mouse events breaks clicking
# around in the table. It can still be changed in the config files.
pending_events['device 1'] = [
new_event(EV_KEY, BTN_LEFT, 1),
new_event(EV_KEY, CODE_2, 1),
new_event(EV_KEY, BTN_TOOL_DOUBLETAP, 1),
]
keycode_reader.start_reading('device 1')
time.sleep(0.1)
self.assertEqual(keycode_reader.read(), (EV_KEY, CODE_2, 1))
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 1)
def test_ignore_value_2(self):
# this is not a combination, because (EV_KEY CODE_3, 2) is ignored
pending_events['device 1'] = [
new_event(EV_ABS, ABS_HAT0X, 1),
new_event(EV_KEY, CODE_3, 2)
]
keycode_reader.start_reading('device 1')
wait(keycode_reader._pipe[0].poll, 0.5)
self.assertEqual(keycode_reader.read(), (EV_ABS, ABS_HAT0X, 1))
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 1)
def test_reading_ignore_up(self):
pending_events['device 1'] = [
new_event(EV_KEY, CODE_1, 0, 10),
new_event(EV_KEY, CODE_2, 1, 11),
new_event(EV_KEY, CODE_3, 0, 12),
]
keycode_reader.start_reading('device 1')
time.sleep(0.1)
self.assertEqual(keycode_reader.read(), (EV_KEY, CODE_2, 1))
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 1)
def test_reading_ignore_duplicate_down(self):
pipe = multiprocessing.Pipe()
pipe[1].send(new_event(EV_ABS, ABS_Z, 1, 10))
keycode_reader._pipe = pipe
self.assertEqual(keycode_reader.read(), (EV_ABS, ABS_Z, 1))
self.assertEqual(keycode_reader.read(), None)
# duplicate
pipe[1].send(new_event(EV_ABS, ABS_Z, 1, 10))
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 1)
self.assertEqual(len(keycode_reader.get_unreleased_keys()), 1)
self.assertIsInstance(keycode_reader.get_unreleased_keys(), Key)
# release
pipe[1].send(new_event(EV_ABS, ABS_Z, 0, 10))
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 0)
self.assertIsNone(keycode_reader.get_unreleased_keys())
def test_wrong_device(self):
pending_events['device 1'] = [
new_event(EV_KEY, CODE_1, 1),
new_event(EV_KEY, CODE_2, 1),
new_event(EV_KEY, CODE_3, 1)
]
keycode_reader.start_reading('device 2')
time.sleep(EVENT_READ_TIMEOUT * 5)
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 0)
def test_keymapper_devices(self):
# Don't read from keymapper devices, their keycodes are not
# representative for the original key. As long as this is not
# intentionally programmed it won't even do that. But it was at some
# point.
pending_events['key-mapper device 2'] = [
new_event(EV_KEY, CODE_1, 1),
new_event(EV_KEY, CODE_2, 1),
new_event(EV_KEY, CODE_3, 1)
]
keycode_reader.start_reading('device 2')
time.sleep(EVENT_READ_TIMEOUT * 5)
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 0)
def test_clear(self):
keycode_reader.start_reading('device 1')
pipe = keycode_reader._pipe
pipe[1].send(new_event(EV_KEY, CODE_1, 1))
pipe[1].send(new_event(EV_KEY, CODE_2, 1))
pipe[1].send(new_event(EV_KEY, CODE_3, 1))
keycode_reader.read()
self.assertEqual(len(keycode_reader._unreleased), 1)
self.assertIsNotNone(keycode_reader.previous_event)
self.assertIsNotNone(keycode_reader.previous_result)
keycode_reader.clear()
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 0)
self.assertIsNone(keycode_reader.get_unreleased_keys())
self.assertIsNone(keycode_reader.previous_event)
self.assertIsNone(keycode_reader.previous_result)
def test_switch_device(self):
pending_events['device 2'] = [new_event(EV_KEY, CODE_1, 1)]
pending_events['device 1'] = [new_event(EV_KEY, CODE_3, 1)]
keycode_reader.start_reading('device 2')
time.sleep(EVENT_READ_TIMEOUT * 5)
keycode_reader.start_reading('device 1')
time.sleep(EVENT_READ_TIMEOUT * 5)
self.assertEqual(keycode_reader.read(), (EV_KEY, CODE_3, 1))
self.assertEqual(keycode_reader.read(), None)
def test_prioritizing_1_normalize(self):
# filter the ABS_MISC events of the wacom intuos 5 out that come
# with every button press. Or more general, prioritize them
# based on the event type
pending_events['device 1'] = [
# all ABS values will be fitted into [-1, 0, 1]
new_event(EV_ABS, ABS_HAT0X, 5678, 1234.0000),
new_event(EV_ABS, ABS_HAT0X, 0, 1234.0001),
new_event(EV_ABS, ABS_HAT0X, 5678, 1235.0000), # ignored
new_event(EV_ABS, ABS_HAT0X, 0, 1235.0001),
new_event(EV_KEY, KEY_COMMA, 1, 1235.0010),
new_event(EV_KEY, KEY_COMMA, 0, 1235.0011),
new_event(EV_ABS, ABS_HAT0X, 5678, 1235.0020), # ignored
new_event(EV_ABS, ABS_HAT0X, 0, 1235.0021), # ignored
new_event(EV_ABS, ABS_HAT0X, 5678, 1236.0000)
]
keycode_reader.start_reading('device 1')
wait(keycode_reader._pipe[0].poll, 0.5)
self.assertEqual(keycode_reader.read(), (EV_ABS, ABS_HAT0X, 1))
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 1)
self.assertEqual(
keycode_reader.get_unreleased_keys(),
((EV_ABS, ABS_HAT0X, 1),)
)
def test_prioritizing_2(self):
custom_mapping.set('gamepad.joystick.left_purpose', BUTTONS)
keycode_reader.start_reading('gamepad')
pipe = keycode_reader._pipe
pipe[1].send(new_event(EV_ABS, ABS_HAT0X, 1, 1234.0000)),
pipe[1].send(new_event(EV_ABS, ABS_MISC, 1, 1235.0000)),
self.assertEqual(keycode_reader.read(), (
(EV_ABS, ABS_HAT0X, 1),
(EV_ABS, ABS_MISC, 1)
))
# will make the previous ABS_MISC event get ignored
pipe[1].send(new_event(EV_ABS, ABS_Y, 1, 1235.0010)),
pipe[1].send(new_event(EV_ABS, ABS_MISC, 1, 1235.0020)), # ignored
pipe[1].send(new_event(EV_ABS, ABS_MISC, 1, 1235.0030)) # ignored
# this time, don't release anything. the combination should
# ignore stuff as well.
self.assertEqual(keycode_reader.read(), (
(EV_ABS, ABS_HAT0X, 1),
(EV_ABS, ABS_Y, 1)
))
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 2)
self.assertEqual(keycode_reader.get_unreleased_keys(), (
(EV_ABS, ABS_HAT0X, 1),
(EV_ABS, ABS_Y, 1)
))
self.assertIsInstance(keycode_reader.get_unreleased_keys(), Key)
def test_prioritizing_3_normalize(self):
# take the sign of -1234, just like in test_prioritizing_2_normalize
pending_events['device 1'] = [
# HAT0X usually reports only -1, 0 and 1, but that shouldn't
# matter. Everything is normalized.
new_event(EV_ABS, ABS_HAT0X, -1234, 1234.0000),
new_event(EV_ABS, ABS_HAT0Y, 0, 1234.0030) # ignored
# this time don't release anything as well, but it's not
# a combination because only one event is accepted
]
keycode_reader.start_reading('device 1')
wait(keycode_reader._pipe[0].poll, 0.5)
self.assertEqual(keycode_reader.read(), (EV_ABS, ABS_HAT0X, -1))
self.assertEqual(keycode_reader.read(), None)
self.assertEqual(len(keycode_reader._unreleased), 1)
if __name__ == "__main__":
unittest.main()
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