# SPDX-License-Identifier: GPL-2.0-or-later # SPDX-FileCopyrightText: 2022 Bartosz Golaszewski import datetime import errno import threading import time from dataclasses import FrozenInstanceError from functools import partial from select import select from typing import Optional from unittest import TestCase import gpiod from gpiod.line import Direction from . import gpiosim _EventType = gpiod.InfoEvent.Type class InfoEventDataclassBehavior(TestCase): def test_info_event_props_are_frozen(self) -> None: sim = gpiosim.Chip() with gpiod.Chip(sim.dev_path) as chip: chip.watch_line_info(0) with chip.request_lines(config={0: None}) as request: self.assertTrue(chip.wait_info_event(datetime.timedelta(seconds=1))) event = chip.read_info_event() with self.assertRaises(FrozenInstanceError): event.event_type = 4 # type: ignore[misc, assignment] with self.assertRaises(FrozenInstanceError): event.timestamp_ns = 4 # type: ignore[misc] with self.assertRaises(FrozenInstanceError): event.line_info = 4 # type: ignore[misc, assignment] def request_reconfigure_release_line(chip_path: str, offset: int) -> None: time.sleep(0.1) with gpiod.request_lines(chip_path, config={offset: None}) as request: time.sleep(0.1) request.reconfigure_lines( config={offset: gpiod.LineSettings(direction=Direction.OUTPUT)} ) time.sleep(0.1) class WatchingInfoEventWorks(TestCase): def setUp(self) -> None: self.sim = gpiosim.Chip(num_lines=8, line_names={4: "foobar"}) self.chip = gpiod.Chip(self.sim.dev_path) self.thread: Optional[threading.Thread] = None def tearDown(self) -> None: if self.thread: self.thread.join() self.thread = None self.chip.close() self.chip = None # type: ignore[assignment] self.sim = None # type: ignore[assignment] def test_watch_line_info_returns_line_info(self) -> None: info = self.chip.watch_line_info(7) self.assertEqual(info.offset, 7) def test_watch_line_info_keyword_argument(self) -> None: info = self.chip.watch_line_info(line=7) def test_watch_line_info_offset_out_of_range(self) -> None: with self.assertRaises(ValueError): self.chip.watch_line_info(8) def test_watch_line_info_no_arguments(self) -> None: with self.assertRaises(TypeError): self.chip.watch_line_info() # type: ignore[call-arg] def test_watch_line_info_by_line_name(self) -> None: self.chip.watch_line_info("foobar") def test_watch_line_info_invalid_argument_type(self) -> None: with self.assertRaises(TypeError): self.chip.watch_line_info(None) # type: ignore[arg-type] def test_wait_for_event_timeout(self) -> None: info = self.chip.watch_line_info(7) self.assertFalse( self.chip.wait_info_event(datetime.timedelta(microseconds=10000)) ) def test_request_reconfigure_release_events(self) -> None: info = self.chip.watch_line_info(7) self.assertEqual(info.direction, Direction.INPUT) self.thread = threading.Thread( target=partial(request_reconfigure_release_line, self.sim.dev_path, 7) ) self.thread.start() self.assertTrue(self.chip.wait_info_event(datetime.timedelta(seconds=1))) event = self.chip.read_info_event() self.assertEqual(event.event_type, _EventType.LINE_REQUESTED) self.assertEqual(event.line_info.offset, 7) self.assertEqual(event.line_info.direction, Direction.INPUT) ts_req = event.timestamp_ns # Check that we can use a float directly instead of datetime.timedelta. self.assertTrue(self.chip.wait_info_event(1.0)) event = self.chip.read_info_event() self.assertEqual(event.event_type, _EventType.LINE_CONFIG_CHANGED) self.assertEqual(event.line_info.offset, 7) self.assertEqual(event.line_info.direction, Direction.OUTPUT) ts_rec = event.timestamp_ns self.assertTrue(self.chip.wait_info_event(datetime.timedelta(seconds=1))) event = self.chip.read_info_event() self.assertEqual(event.event_type, _EventType.LINE_RELEASED) self.assertEqual(event.line_info.offset, 7) self.assertEqual(event.line_info.direction, Direction.OUTPUT) ts_rel = event.timestamp_ns # No more events. self.assertFalse( self.chip.wait_info_event(datetime.timedelta(microseconds=10000)) ) # Check timestamps are really monotonic. self.assertGreater(ts_rel, ts_rec) self.assertGreater(ts_rec, ts_req) def test_select_chip_object(self) -> None: info = self.chip.watch_line_info(7) self.thread = threading.Thread( target=partial(request_reconfigure_release_line, self.sim.dev_path, 7) ) self.thread.start() rd, wr, ex = select([self.chip], [], [], 1) self.assertFalse(wr) self.assertFalse(ex) self.assertEqual(rd[0], self.chip) event = rd[0].read_info_event() self.assertEqual(event.event_type, _EventType.LINE_REQUESTED) self.assertEqual(event.line_info.offset, 7) class UnwatchingLineInfo(TestCase): def setUp(self) -> None: self.sim = gpiosim.Chip(num_lines=8, line_names={4: "foobar"}) self.chip = gpiod.Chip(self.sim.dev_path) def tearDown(self) -> None: self.chip.close() self.chip = None # type: ignore[assignment] self.sim = None # type: ignore[assignment] def test_unwatch_line_info(self) -> None: self.chip.watch_line_info(0) with self.chip.request_lines(config={0: None}) as request: self.assertTrue(self.chip.wait_info_event(datetime.timedelta(seconds=1))) event = self.chip.read_info_event() self.assertEqual(event.event_type, _EventType.LINE_REQUESTED) self.chip.unwatch_line_info(0) self.assertFalse( self.chip.wait_info_event(datetime.timedelta(microseconds=10000)) ) def test_unwatch_not_watched_line(self) -> None: with self.assertRaises(OSError) as ex: self.chip.unwatch_line_info(2) self.assertEqual(ex.exception.errno, errno.EBUSY) def test_unwatch_line_info_no_argument(self) -> None: with self.assertRaises(TypeError): self.chip.unwatch_line_info() # type: ignore[call-arg] def test_unwatch_line_info_by_line_name(self) -> None: self.chip.watch_line_info(4) with self.chip.request_lines(config={4: None}) as request: self.assertIsNotNone(self.chip.read_info_event()) self.chip.unwatch_line_info("foobar") self.assertFalse( self.chip.wait_info_event(datetime.timedelta(microseconds=10000)) ) class InfoEventStringRepresentation(TestCase): def test_info_event_str(self) -> None: sim = gpiosim.Chip() with gpiod.Chip(sim.dev_path) as chip: chip.watch_line_info(0) with chip.request_lines(config={0: None}) as request: self.assertTrue(chip.wait_info_event(datetime.timedelta(seconds=1))) event = chip.read_info_event() self.assertRegex( str(event), '>', )