import contextlib
import ctypes
import io
import os
from pathlib import Path
import tempfile
import unittest
from collections.abc import Collection
from typing import Any
from unittest import mock

# noinspection PyProtectedMember
from ptlinux.gamebox_runtime import (
	GAMESCOPE_FOCUS_REPAIR_INTERVAL_SECONDS,
	GAMESCOPE_HOST_FOCUS_STATE_ENV,
	GAMESCOPE_HOST_FOCUS_STATE_MAX_AGE_SECONDS,
	GameboxRuntimeError,
	WINDOW_ACTION_CONFIRM_TIMEOUT_SECONDS,
	WINDOW_ACTIVATION_DELAY_SECONDS,
	WINDOW_FOCUS_DELAY_SECONDS,
	WINDOW_GEOMETRY_CONFIRM_TIMEOUT_SECONDS,
	WINDOW_NUDGE_CONFIRM_TIMEOUT_SECONDS,
	WINDOW_SCALING_REPAIR_LIMIT,
	WINDOW_STARTUP_POLL_SECONDS,
	WINDOW_SURFACE_REFRESH_DELAY_SECONDS,
	WINDOW_SURFACE_SETTLE_SECONDS,
	WINDOW_TITLE,
	_X11,
	_X_PROPERTY_CHANGE_MASK,
	_X_PROPERTY_NOTIFY,
	_enable_game_window_scaling,
	_focus_game_window,
	_gamescope_host_focus_is_allowed,
	_guard_game_window_startup,
	_maintain_game_window_focus,
	_maintain_gamescope_game_window_focus,
	_maintain_game_window_scaling,
	_matches_game_window_title,
	_motif_hints_with_scaling,
	_normal_hints_without_fixed_size,
	_normal_hints_with_resize_increments,
	_process_exit_status,
	_prepare_game_window,
	_protocols_without,
	_repair_game_window_focus,
	_repair_gamescope_game_window_focus,
	_resolve_gamescope_game_window,
	_select_game_window,
	run_game_window,
)


class GameboxRuntimeTests(unittest.TestCase):
	def test_maps_signals_before_returning_through_python(self) -> None:
		self.assertEqual(_process_exit_status(-9), 137)
		self.assertEqual(_process_exit_status(7), 7)

	def test_rejects_empty_game_command(self) -> None:
		with self.assertRaisesRegex(GameboxRuntimeError, "empty"):
			run_game_window([])

	def test_game_title_match_accepts_ptr_prefix_and_rejects_dialogs(self) -> None:
		self.assertFalse(
			_matches_game_window_title(
				"Choose an existing PristonTale EU game directory",
				"PristonTale EU",
			)
		)
		self.assertFalse(
			_matches_game_window_title("Launching PristonTale EU", "PristonTale EU")
		)
		self.assertTrue(
			_matches_game_window_title("PristonTale EU V21.75.83", "PristonTale EU")
		)
		self.assertTrue(
			_matches_game_window_title(
				"PTR - PristonTale EU V21.78.89",
				"PristonTale EU",
			)
		)
		self.assertFalse(
			_matches_game_window_title(
				"PTR launcher for PristonTale EU",
				"PristonTale EU",
			)
		)

	def test_selects_only_a_new_game_window(self) -> None:
		windows = [
			(10, "PristonTale EU V21.75.83"),
			(11, "Choose an existing PristonTale EU game directory"),
			(12, "PristonTale EU V21.75.83"),
			(13, "PristonTale EU V21.75.83"),
			(14, "PristonTale EU V21.75.83"),
		]
		self.assertEqual(
			_select_game_window(windows, "PristonTale EU", {10, 12, 13}),
			(14, "PristonTale EU V21.75.83"),
		)

	def test_resolves_a_window_manager_frame_to_its_client(self) -> None:
		mapper = object.__new__(_X11)
		children = {
			20: [21, 22],
			21: [],
			22: [23],
			23: [],
		}

		with (
			mock.patch.object(
				mapper,
				"_has_wm_state",
				side_effect=lambda window: window == 23,
			),
			mock.patch.object(
				mapper,
				"_child_windows",
				side_effect=lambda window: children[window],
			),
		):
			self.assertEqual(mapper._client_window(20), 23)

	def test_retains_the_frame_when_no_client_marker_exists(self) -> None:
		mapper = object.__new__(_X11)

		with (
			mock.patch.object(mapper, "_has_wm_state", return_value=False),
			mock.patch.object(mapper, "_child_windows", return_value=[]),
		):
			self.assertEqual(mapper._client_window(20), 20)

	def test_removes_only_wm_ping_from_window_protocols(self) -> None:
		self.assertEqual(_protocols_without((10, 20, 30, 20), 20), (10, 30))

	def test_adds_scaling_without_changing_other_explicit_motif_hints(self) -> None:
		self.assertEqual(
			_motif_hints_with_scaling((0x03, 0x0C, 0x3A, 7, 8)),
			(0x03, 0x1E, 0x7E, 7, 8),
		)

	def test_adds_scaling_to_exclusive_motif_hints(self) -> None:
		self.assertEqual(
			_motif_hints_with_scaling((0x03, 0x11, 0x41, 0, 0)),
			(0x03, 0x01, 0x01, 0, 0),
		)

	def test_relaxes_only_an_exact_fixed_size_pair(self) -> None:
		hints = (0x30, 0, 0, 1600, 900, 1600, 900, 1600, 900, 1, 1)

		self.assertEqual(
			_normal_hints_without_fixed_size(hints, (1600, 900)),
			(0x00, *hints[1:]),
		)
		self.assertEqual(
			_normal_hints_without_fixed_size(hints, (1280, 720)),
			(0x00, *hints[1:]),
		)
		unrelated_range = (0x30, 0, 0, 800, 600, 640, 480, 1920, 1080)
		self.assertEqual(
			_normal_hints_without_fixed_size(unrelated_range, (1280, 720)),
			unrelated_range,
		)

	def test_adds_resize_increments_without_losing_other_size_hints(self) -> None:
		hints = (0x01, 1, 2, 3, 4, 320, 240, 0, 0, 0, 0)

		updated = _normal_hints_with_resize_increments(
			hints,
			(1280, 960),
			(64, 48),
		)

		self.assertEqual(updated[0], 0x141)
		self.assertEqual(updated[1:9], hints[1:9])
		self.assertEqual(updated[9:11], (64, 48))
		self.assertEqual(updated[15:17], (0, 0))
		self.assertEqual(len(updated), 18)

	def test_keeps_matching_resize_increments_without_rewriting_x11_hints(self) -> None:
		hints = [0] * 18
		hints[0] = 0x140
		hints[9:11] = (64, 48)
		hints[15:17] = (0, 0)
		mapper = object.__new__(_X11)
		mapper.library = mock.Mock()
		mapper.display = ctypes.c_void_p(1)

		with (
			mock.patch.object(mapper, "_long_property", return_value=tuple(hints)),
			mock.patch.object(mapper, "_replace_long_property") as replace_property,
		):
			self.assertTrue(
				mapper.set_resize_increments(12, (1280, 960), (64, 48))
			)

		replace_property.assert_not_called()
		mapper.library.XSync.assert_not_called()

	def test_caches_successful_x11_atom_lookups(self) -> None:
		class FakeX11Library:
			def __init__(self) -> None:
				self.calls: list[tuple[bytes, int]] = []

			def XInternAtom(
					self,
					_display: object,
					name: bytes,
					only_if_exists: int,
			) -> int:
				self.calls.append((name, only_if_exists))
				return 41

		library = FakeX11Library()
		mapper = object.__new__(_X11)
		mapper.library = library  # type: ignore[assignment]
		mapper.display = ctypes.c_void_p(1)

		self.assertEqual(
			mapper._intern_atom(b"WM_STATE", only_if_exists=True),
			41,
		)
		self.assertEqual(
			mapper._intern_atom(b"WM_STATE", only_if_exists=False),
			41,
		)
		self.assertEqual(library.calls, [(b"WM_STATE", 1)])

	def test_retries_a_missing_x11_atom_lookup(self) -> None:
		class FakeX11Library:
			def __init__(self) -> None:
				self.calls: list[tuple[bytes, int]] = []

			def XInternAtom(
					self,
					_display: object,
					name: bytes,
					only_if_exists: int,
			) -> int:
				self.calls.append((name, only_if_exists))
				return 0 if len(self.calls) == 1 else 77

		library = FakeX11Library()
		mapper = object.__new__(_X11)
		mapper.library = library  # type: ignore[assignment]
		mapper.display = ctypes.c_void_p(1)

		self.assertEqual(
			mapper._intern_atom(b"_NET_ACTIVE_WINDOW", only_if_exists=True),
			0,
		)
		self.assertEqual(
			mapper._intern_atom(b"_NET_ACTIVE_WINDOW", only_if_exists=False),
			77,
		)
		self.assertEqual(
			mapper._intern_atom(b"_NET_ACTIVE_WINDOW", only_if_exists=True),
			77,
		)
		self.assertEqual(
			library.calls,
			[(b"_NET_ACTIVE_WINDOW", 1), (b"_NET_ACTIVE_WINDOW", 0)],
		)

	def test_replaces_a_32_bit_window_property_without_losing_values(self) -> None:
		class FakeX11Library:
			def __init__(self) -> None:
				self.request: tuple[object, ...] | None = None

			def XInternAtom(
					self,
					_display: object,
					name: bytes,
					_only_if_exists: int,
			) -> int:
				return {
					b"WM_NORMAL_HINTS": 31,
					b"WM_SIZE_HINTS": 32,
				}[name]

			def XChangeProperty(
					self,
					_display: object,
					window: int,
					atom: int,
					type_atom: int,
					format_bits: int,
					mode: int,
					data: Any,
					item_count: int,
			) -> int:
				values = ctypes.cast(data, ctypes.POINTER(ctypes.c_ulong))
				self.request = (
					window,
					atom,
					type_atom,
					format_bits,
					mode,
					tuple(values[index] for index in range(item_count)),
				)
				return 0

		library = FakeX11Library()
		mapper = object.__new__(_X11)
		mapper.library = library  # type: ignore[assignment]
		mapper.display = ctypes.c_void_p(1)

		mapper._replace_long_property(
			12,
			b"WM_NORMAL_HINTS",
			b"WM_SIZE_HINTS",
			(0x10, 1600, 900),
		)

		self.assertEqual(
			library.request,
			(12, 31, 32, 32, 0, (0x10, 1600, 900)),
		)

	def test_requests_composited_presentation_for_a_host_window(self) -> None:
		mapper = object.__new__(_X11)
		mapper.library = mock.Mock()
		mapper.display = ctypes.c_void_p(1)

		with (
			mock.patch.object(mapper, "_replace_long_property") as replace_property,
			mock.patch.object(mapper, "_long_property", return_value=(2,)),
		):
			self.assertTrue(mapper.prefer_composited_presentation(12))

		replace_property.assert_not_called()
		mapper.library.XSync.assert_not_called()

	def test_updates_a_noncomposited_host_window_once(self) -> None:
		mapper = object.__new__(_X11)
		mapper.library = mock.Mock()
		mapper.display = ctypes.c_void_p(1)

		with (
			mock.patch.object(mapper, "_replace_long_property") as replace_property,
			mock.patch.object(mapper, "_long_property", side_effect=[(1,), (2,)]),
		):
			self.assertTrue(mapper.prefer_composited_presentation(12))

		replace_property.assert_called_once_with(
			12,
			b"_NET_WM_BYPASS_COMPOSITOR",
			b"CARDINAL",
			(2,),
		)
		mapper.library.XSync.assert_called_once_with(mapper.display, 0)

	def test_wm_ping_suppression_preserves_every_other_protocol(self) -> None:
		class FakeX11Library:
			def __init__(self) -> None:
				self.protocols = (10, 20, 30)
				self.buffers: list[ctypes.Array[ctypes.c_ulong]] = []
				self.assert_atom_name = b""

			def XInternAtom(self, _display: object, name: bytes, _only_if_exists: int) -> int:
				self.assert_atom_name = name
				return 20

			def XGetWMProtocols(
					self,
					_display: object,
					_window: int,
					protocols_return: Any,
					count_return: Any,
			) -> int:
				buffer = (ctypes.c_ulong * len(self.protocols))(*self.protocols)
				self.buffers.append(buffer)
				protocols_pointer = ctypes.cast(
					protocols_return,
					ctypes.POINTER(ctypes.POINTER(ctypes.c_ulong)),
				)
				protocols_pointer[0] = ctypes.cast(
					buffer,
					ctypes.POINTER(ctypes.c_ulong),
				)
				ctypes.cast(
					count_return,
					ctypes.POINTER(ctypes.c_int),
				)[0] = len(self.protocols)
				return 1

			def XSetWMProtocols(
					self,
					_display: object,
					_window: int,
					protocols: Any,
					count: int,
			) -> int:
				protocol_pointer = ctypes.cast(
					protocols,
					ctypes.POINTER(ctypes.c_ulong),
				)
				self.protocols = tuple(
					int(protocol_pointer[index]) for index in range(count)
				)
				return 1

			def XSync(self, _display: object, _discard: int) -> int:
				return 0

			def XFree(self, _value: object) -> int:
				return 0

		library = FakeX11Library()
		mapper = object.__new__(_X11)
		mapper.library = library  # type: ignore[assignment]
		mapper.display = ctypes.c_void_p(1)

		self.assertTrue(mapper.suppress_wm_ping(12))
		self.assertEqual(library.assert_atom_name, b"_NET_WM_PING")
		self.assertEqual(library.protocols, (10, 30))

	def test_replaces_protons_generic_game_window_identity(self) -> None:
		class FakeX11Library:
			def __init__(self) -> None:
				self.identity: tuple[bytes, bytes] | None = None

			def XSetClassHint(
					self,
					_display: object,
					_window: int,
					hints_pointer: Any,
			) -> int:
				hints = hints_pointer._obj
				self.identity = (hints.res_name, hints.res_class)
				return 1

			def XSync(self, _display: object, _discard: int) -> int:
				return 0

		library = FakeX11Library()
		mapper = object.__new__(_X11)
		mapper.library = library  # type: ignore[assignment]
		mapper.display = ctypes.c_void_p(1)

		mapper.set_window_identity(12)

		self.assertEqual(library.identity, (b"pristontale-eu", b"PristonTaleEU"))

	def test_reads_icccm_state_and_motif_decorations(self) -> None:
		class FakeX11Library:
			def __init__(self) -> None:
				self.buffers: list[ctypes.Array[ctypes.c_ulong]] = []
				self.atoms = {b"WM_STATE": 10, b"_MOTIF_WM_HINTS": 20}
				self.properties = {10: (3, 0), 20: (2, 0, 0, 0, 0)}

			def XInternAtom(
					self,
					_display: object,
					name: bytes,
					_only_if_exists: int,
			) -> int:
				return self.atoms.get(name, 0)

			def XGetWindowProperty(
					self,
					_display: object,
					_window: int,
					property_atom: int,
					_offset: int,
					_length: int,
					_delete: int,
					_requested_type: int,
					actual_type_return: Any,
					actual_format_return: Any,
					item_count_return: Any,
					bytes_after_return: Any,
					value_return: Any,
			) -> int:
				values = self.properties[property_atom]
				buffer = (ctypes.c_ulong * len(values))(*values)
				self.buffers.append(buffer)
				ctypes.cast(
					actual_type_return,
					ctypes.POINTER(ctypes.c_ulong),
				)[0] = property_atom
				ctypes.cast(
					actual_format_return,
					ctypes.POINTER(ctypes.c_int),
				)[0] = 32
				ctypes.cast(
					item_count_return,
					ctypes.POINTER(ctypes.c_ulong),
				)[0] = len(values)
				ctypes.cast(
					bytes_after_return,
					ctypes.POINTER(ctypes.c_ulong),
				)[0] = 0
				value_pointer = ctypes.cast(
					value_return,
					ctypes.POINTER(ctypes.POINTER(ctypes.c_ubyte)),
				)
				value_pointer[0] = ctypes.cast(
					buffer,
					ctypes.POINTER(ctypes.c_ubyte),
				)
				return 0

			def XFree(self, _value: object) -> int:
				return 0

		library = FakeX11Library()
		mapper = object.__new__(_X11)
		mapper.library = library  # type: ignore[assignment]
		mapper.display = ctypes.c_void_p(1)

		self.assertEqual(mapper.window_state(12), 3)
		self.assertTrue(mapper.window_is_borderless(12))

		library.properties[20] = (3, 0x3C, 0x7A, 0, 0)
		self.assertFalse(mapper.window_is_borderless(12))

	def test_detects_the_desktop_active_window(self) -> None:
		mapper = object.__new__(_X11)
		mapper.library = mock.Mock()
		mapper.library.XDefaultRootWindow.return_value = 99
		mapper.display = ctypes.c_void_p(1)

		with mock.patch.object(
			mapper,
			"_long_property",
			return_value=(12,),
		) as read_property:
			self.assertTrue(mapper.window_is_active(12))

		read_property.assert_called_once_with(99, b"_NET_ACTIVE_WINDOW", 1)

	def test_detects_fullscreen_or_maximized_ewmh_state(self) -> None:
		mapper = object.__new__(_X11)

		with (
			mock.patch.object(
				mapper,
				"_long_property",
				return_value=(17, 102),
			),
			mock.patch.object(
				mapper,
				"_screen_filling_state_atoms",
				return_value=(101, 102, 103),
			),
		):
			self.assertTrue(mapper.window_is_fullscreen_or_maximized(12))

	def test_force_windowed_state_removes_maximized_before_fullscreen(self) -> None:
		mapper = object.__new__(_X11)

		with (
			mock.patch.object(
				mapper,
				"_long_property",
				return_value=(101, 102, 103),
			),
			mock.patch.object(
				mapper,
				"_screen_filling_state_atoms",
				return_value=(101, 102, 103),
			),
			mock.patch.object(mapper, "_intern_atom", return_value=100),
			mock.patch.object(
				mapper,
				"_send_root_client_message",
				return_value=True,
			) as send_message,
			mock.patch.object(
				mapper,
				"_wait_for_windowed_state",
				return_value=True,
			),
		):
			self.assertTrue(mapper.force_windowed_state(12))

		send_message.assert_has_calls(
			[
				mock.call(12, 100, (0, 102, 103, 1, 0)),
				mock.call(12, 100, (0, 101, 0, 1, 0)),
			]
		)

	def test_force_windowed_state_rejects_an_unconfirmed_request(self) -> None:
		mapper = object.__new__(_X11)

		with (
			mock.patch.object(
				mapper,
				"_long_property",
				return_value=(101,),
			),
			mock.patch.object(
				mapper,
				"_screen_filling_state_atoms",
				return_value=(101, 102, 103),
			),
			mock.patch.object(mapper, "_intern_atom", return_value=100),
			mock.patch.object(
				mapper,
				"_send_root_client_message",
				return_value=True,
			),
			mock.patch.object(
				mapper,
				"_wait_for_windowed_state",
				return_value=False,
			),
			self.assertRaisesRegex(GameboxRuntimeError, "did not confirm"),
		):
			mapper.force_windowed_state(12)

	def test_enables_scaling_only_after_the_wm_confirms_all_actions(self) -> None:
		mapper = object.__new__(_X11)
		mapper.library = mock.Mock()
		mapper.display = ctypes.c_void_p(1)
		normal_hints = (
			0x30,
			0,
			0,
			1600,
			900,
			1600,
			900,
			1600,
			900,
			1,
			1,
		)
		motif_hints = (0x03, 0x0C, 0x3A, 0, 0)

		with (
			mock.patch.object(mapper, "window_allows_scaling", return_value=False),
			mock.patch.object(mapper, "window_size", return_value=(1600, 900)),
			mock.patch.object(
				mapper,
				"_long_property",
				side_effect=[normal_hints, motif_hints],
			),
			mock.patch.object(mapper, "_replace_long_property") as replace_property,
			mock.patch.object(
				mapper,
				"_wait_for_scaling_actions",
				return_value=True,
			),
		):
			self.assertTrue(mapper.enable_window_scaling(12))

		replace_property.assert_has_calls(
			[
				mock.call(
					12,
					b"WM_NORMAL_HINTS",
					b"WM_SIZE_HINTS",
					(0x00, *normal_hints[1:]),
				),
				mock.call(
					12,
					b"_MOTIF_WM_HINTS",
					b"_MOTIF_WM_HINTS",
					(0x03, 0x1E, 0x7E, 0, 0),
				),
			]
		)
		self.assertNotIn(
			b"_NET_WM_ALLOWED_ACTIONS",
			(call.args[1] for call in replace_property.call_args_list),
		)

	def test_reapplies_scaling_hints_without_repeating_wm_confirmation(self) -> None:
		mapper = object.__new__(_X11)
		mapper.library = mock.Mock()
		mapper.display = ctypes.c_void_p(1)
		normal_hints = (0x30, 0, 0, 1600, 900, 1600, 900, 1600, 900)
		motif_hints = (0x03, 0x0C, 0x3A, 0, 0)

		with (
			mock.patch.object(mapper, "window_size", return_value=(1600, 900)),
			mock.patch.object(
				mapper,
				"_long_property",
				side_effect=[normal_hints, motif_hints],
			),
			mock.patch.object(mapper, "_replace_long_property") as replace_property,
			mock.patch.object(mapper, "_wait_for_scaling_actions") as confirm_actions,
		):
			self.assertTrue(mapper.enable_window_scaling(12, confirm=False))

		self.assertEqual(replace_property.call_count, 2)
		confirm_actions.assert_not_called()
		mapper.library.XFlush.assert_called_once_with(mapper.display)
		mapper.library.XSync.assert_not_called()

	def test_restores_original_hints_when_scaling_is_not_confirmed(self) -> None:
		mapper = object.__new__(_X11)
		mapper.library = mock.Mock()
		mapper.display = ctypes.c_void_p(1)
		normal_hints = (0x20, 0, 0, 1600, 900, 0, 0, 1600, 900)
		motif_hints = (0x03, 0x0C, 0x3A, 0, 0)

		with (
			mock.patch.object(mapper, "window_allows_scaling", return_value=False),
			mock.patch.object(mapper, "window_size", return_value=(1600, 900)),
			mock.patch.object(
				mapper,
				"_long_property",
				side_effect=[normal_hints, motif_hints],
			),
			mock.patch.object(mapper, "_replace_long_property") as replace_property,
			mock.patch.object(
				mapper,
				"_wait_for_scaling_actions",
				return_value=False,
			),
		):
			self.assertFalse(mapper.enable_window_scaling(12))

		self.assertEqual(replace_property.call_count, 4)
		self.assertEqual(
			replace_property.call_args_list[-2:],
			[
				mock.call(
					12,
					b"_MOTIF_WM_HINTS",
					b"_MOTIF_WM_HINTS",
					motif_hints,
				),
				mock.call(
					12,
					b"WM_NORMAL_HINTS",
					b"WM_SIZE_HINTS",
					normal_hints,
				),
			]
		)

	def test_waits_for_wm_actions_when_client_hints_are_already_resizable(
			self,
	) -> None:
		mapper = object.__new__(_X11)
		mapper.library = mock.Mock()
		mapper.display = ctypes.c_void_p(1)
		normal_hints = (0x04, 0, 0, 1280, 960, 0, 0, 0, 0)

		with (
			mock.patch.object(mapper, "window_size", return_value=(1280, 960)),
			mock.patch.object(
				mapper,
				"_long_property",
				side_effect=[normal_hints, None],
			),
			mock.patch.object(mapper, "_replace_long_property") as replace_property,
			mock.patch.object(
				mapper,
				"_wait_for_scaling_actions",
				return_value=True,
			) as wait_for_actions,
		):
			self.assertTrue(mapper.enable_window_scaling(12))

		replace_property.assert_not_called()
		mapper.library.XSync.assert_called_once_with(mapper.display, 0)
		wait_for_actions.assert_called_once_with(12)

	def test_detects_native_resize_and_both_maximize_actions(self) -> None:
		mapper = object.__new__(_X11)

		with (
			mock.patch.object(mapper, "_long_property", return_value=(7, 31, 32, 33)),
			mock.patch.object(mapper, "_intern_atom", side_effect=[31, 32, 33]),
		):
			self.assertTrue(mapper.window_allows_scaling(12))

	def test_window_diagnostic_snapshot_explains_missing_maximize_actions(self) -> None:
		mapper = object.__new__(_X11)
		normal_hints = [0] * 18
		normal_hints[0] = (1 << 4) | (1 << 5)
		normal_hints[5:9] = [1280, 960, 1280, 960]

		def read_property(
			_window: int,
			name: bytes,
			_maximum_items: int,
		) -> tuple[int, ...] | None:
			return {
				b"_NET_WM_STATE": (102,),
				b"_NET_WM_ALLOWED_ACTIONS": (31,),
				b"WM_NORMAL_HINTS": tuple(normal_hints),
				b"_MOTIF_WM_HINTS": (3, 2, 4, 0, 0),
			}.get(name)

		with (
			mock.patch.object(mapper, "window_state", return_value=1),
			mock.patch.object(mapper, "window_size", return_value=(1280, 960)),
			mock.patch.object(
				mapper,
				"window_net_wm_state_flags",
				return_value={
					"net_wm_state_present": True,
					"fullscreen": False,
					"maximized_horizontal": True,
					"maximized_vertical": False,
					"hidden": False,
					"above": False,
					"demands_attention": False,
					"skip_taskbar": False,
				},
			),
			mock.patch.object(mapper, "window_is_active", return_value=True),
			mock.patch.object(mapper, "window_is_focused", return_value=True),
			mock.patch.object(mapper, "window_is_borderless", return_value=False),
			mock.patch.object(mapper, "_long_property", side_effect=read_property),
			mock.patch.object(
				mapper,
				"_screen_filling_state_atoms",
				return_value=(101, 102, 103),
			),
			mock.patch.object(
				mapper,
				"_intern_atom",
				side_effect=lambda name, **_kwargs: {
					b"_NET_WM_ACTION_RESIZE": 31,
					b"_NET_WM_ACTION_MAXIMIZE_HORZ": 32,
					b"_NET_WM_ACTION_MAXIMIZE_VERT": 33,
					b"_NET_WM_ACTION_MINIMIZE": 34,
				}[name],
			),
		):
			snapshot = mapper.window_diagnostic_snapshot(12)

		self.assertEqual(snapshot["wm_state"], "normal")
		self.assertTrue(snapshot["normal_fixed_size"])
		self.assertTrue(snapshot["allows_resize"])
		self.assertFalse(snapshot["allows_maximize_horizontal"])
		self.assertFalse(snapshot["allows_maximize_vertical"])
		self.assertTrue(snapshot["maximized_horizontal"])
		self.assertFalse(snapshot["hidden"])
		self.assertTrue(snapshot["motif_allows_resize"])
		self.assertFalse(snapshot["motif_allows_maximize"])

	def test_wait_for_scaling_actions_has_a_short_bounded_timeout(self) -> None:
		mapper = object.__new__(_X11)

		with (
			mock.patch.object(mapper, "window_allows_scaling", return_value=False),
			mock.patch(
				"ptlinux.gamebox_runtime.time.monotonic",
				side_effect=[10.0, 10.0 + WINDOW_ACTION_CONFIRM_TIMEOUT_SECONDS],
			),
			mock.patch("ptlinux.gamebox_runtime.time.sleep") as sleep,
		):
			self.assertFalse(mapper._wait_for_scaling_actions(12))

		sleep.assert_not_called()

	def test_subscribes_only_to_property_changes_for_scaling_maintenance(self) -> None:
		mapper = object.__new__(_X11)
		mapper.library = mock.Mock()
		mapper.library.XSelectInput.return_value = 1
		mapper.display = ctypes.c_void_p(1)

		mapper.select_scaling_hint_events(12)

		mapper.library.XSelectInput.assert_called_once_with(
			mapper.display,
			12,
			_X_PROPERTY_CHANGE_MASK,
		)
		mapper.library.XSync.assert_called_once_with(mapper.display, 0)

	def test_wait_for_scaling_hint_change_uses_the_x11_event_socket(self) -> None:
		mapper = object.__new__(_X11)
		mapper.library = mock.Mock()
		mapper.library.XPending.side_effect = [0, 1, 0]
		mapper.library.XConnectionNumber.return_value = 9
		mapper.display = ctypes.c_void_p(1)

		def publish_property_event(_display: object, event_pointer: Any) -> int:
			event = event_pointer._obj
			event.property.type = _X_PROPERTY_NOTIFY
			event.property.window = 12
			event.property.atom = 31
			return 0

		mapper.library.XNextEvent.side_effect = publish_property_event
		with (
			mock.patch.object(mapper, "_intern_atom", side_effect=[31, 32, 33]),
			mock.patch(
				"ptlinux.gamebox_runtime.select.select",
				return_value=([9], [], []),
			) as wait_for_event,
		):
			self.assertTrue(mapper.wait_for_scaling_hint_change(12))

		wait_for_event.assert_called_once()
		mapper.library.XNextEvent.assert_called_once()

	def test_wait_for_scaling_hint_change_times_out_without_polling_properties(
			self,
	) -> None:
		mapper = object.__new__(_X11)
		mapper.library = mock.Mock()
		mapper.library.XPending.return_value = 0
		mapper.library.XConnectionNumber.return_value = 9
		mapper.display = ctypes.c_void_p(1)

		with mock.patch(
				"ptlinux.gamebox_runtime.select.select",
				return_value=([], [], []),
		):
			self.assertFalse(mapper.wait_for_scaling_hint_change(12))

		mapper.library.XNextEvent.assert_not_called()

	def test_activate_window_sends_an_ewmh_restore_request(self) -> None:
		class FakeX11Library:
			def __init__(self) -> None:
				self.request: tuple[int, ...] | None = None

			def XInternAtom(
					self,
					_display: object,
					name: bytes,
					_only_if_exists: int,
			) -> int:
				self.assert_name = name
				return 77

			def XDefaultRootWindow(self, _display: object) -> int:
				return 99

			def XSendEvent(
					self,
					_display: object,
					root: int,
					_propagate: int,
					mask: int,
					event_pointer: Any,
			) -> int:
				event = event_pointer._obj.client_message
				self.request = (
					root,
					mask,
					event.type,
					event.window,
					event.message_type,
					event.format,
					event.data.longs[0],
					event.data.longs[1],
					event.data.longs[2],
					event.data.longs[3],
					event.data.longs[4],
				)
				return 1

			def XSync(self, _display: object, _discard: int) -> int:
				return 0

		library = FakeX11Library()
		mapper = object.__new__(_X11)
		mapper.library = library  # type: ignore[assignment]
		mapper.display = ctypes.c_void_p(1)

		with mock.patch.object(mapper, "_long_property", return_value=None):
			self.assertTrue(mapper.activate_window(12))

		self.assertEqual(library.assert_name, b"_NET_ACTIVE_WINDOW")
		self.assertEqual(
			library.request,
			(99, (1 << 19) | (1 << 20), 33, 12, 77, 32, 1, 0, 0, 0, 0),
		)

	def test_borderless_mapping_captures_client_size_before_reframing(self) -> None:
		class FakeX11Library:
			def __init__(self) -> None:
				self.events: list[object] = []

			def XMapRaised(self, _display: object, window: int) -> int:
				self.events.append(("map", window))
				return 0

			def XFlush(self, _display: object) -> int:
				self.events.append("flush")
				return 0

		library = FakeX11Library()
		mapper = object.__new__(_X11)
		mapper.library = library  # type: ignore[assignment]
		mapper.display = ctypes.c_void_p(1)

		with (
			mock.patch.object(
				mapper,
				"window_size",
				side_effect=lambda window: (
						library.events.append(("size", window)) or (800, 450)
				),
			),
			mock.patch.object(
				mapper,
				"_remove_decorations",
				side_effect=lambda window: library.events.append(
					("borderless", window)
				),
			),
		):
			target_size = mapper.map_window(12, borderless=True)

		self.assertEqual(target_size, (800, 450))
		self.assertEqual(
			library.events,
			[("size", 12), ("borderless", 12), ("map", 12), "flush"],
		)

	def test_decorated_mapping_also_captures_the_client_size(self) -> None:
		class FakeX11Library:
			def __init__(self) -> None:
				self.events: list[object] = []

			def XMapRaised(self, _display: object, window: int) -> int:
				self.events.append(("map", window))
				return 0

			def XFlush(self, _display: object) -> int:
				self.events.append("flush")
				return 0

		library = FakeX11Library()
		mapper = object.__new__(_X11)
		mapper.library = library  # type: ignore[assignment]
		mapper.display = ctypes.c_void_p(1)

		with mock.patch.object(
				mapper,
				"window_size",
				side_effect=lambda window: (
						library.events.append(("size", window)) or (1280, 960)
				),
		):
			target_size = mapper.map_window(12, borderless=False)

		self.assertEqual(target_size, (1280, 960))
		self.assertEqual(
			library.events,
			[("size", 12), ("map", 12), "flush"],
		)

	def test_wait_for_window_size_observes_delayed_wm_acknowledgement(self) -> None:
		mapper = object.__new__(_X11)

		with (
			mock.patch.object(
				mapper,
				"window_size",
				side_effect=[(1280, 960), (1279, 960)],
			),
			mock.patch("ptlinux.gamebox_runtime.time.sleep") as sleep,
		):
			self.assertTrue(mapper._wait_for_window_size(12, (1279, 960)))

		sleep.assert_called_once()

	def test_wait_for_window_size_reports_a_wm_timeout(self) -> None:
		mapper = object.__new__(_X11)

		with (
			mock.patch.object(mapper, "window_size", return_value=(1280, 960)),
			mock.patch(
				"ptlinux.gamebox_runtime.time.monotonic",
				side_effect=[10.0, 10.5],
			),
		):
			self.assertFalse(mapper._wait_for_window_size(12, (1279, 960)))

	def test_render_surface_refresh_restores_a_pre_reframe_target_size(self) -> None:
		class FakeX11Library:
			def __init__(self) -> None:
				self.sizes: list[tuple[int, int]] = []

			def XResizeWindow(
					self,
					_display: object,
					_window: int,
					width: int,
					height: int,
			) -> int:
				self.sizes.append((width, height))
				return 0

			def XSync(self, _display: object, _discard: int) -> int:
				return 0

		library = FakeX11Library()
		mapper = object.__new__(_X11)
		mapper.library = library  # type: ignore[assignment]
		mapper.display = ctypes.c_void_p(1)

		with (
			mock.patch.object(mapper, "window_size") as window_size,
			mock.patch.object(
				mapper,
				"_wait_for_window_size",
				return_value=True,
			) as wait_for_size,
			mock.patch("ptlinux.gamebox_runtime.time.sleep"),
		):
			self.assertTrue(
				mapper.refresh_render_surface(12, target_size=(800, 450))
			)

		window_size.assert_not_called()
		wait_for_size.assert_has_calls(
			[
				mock.call(
					12,
					(799, 450),
					timeout_seconds=WINDOW_NUDGE_CONFIRM_TIMEOUT_SECONDS,
				),
				mock.call(
					12,
					(800, 450),
					timeout_seconds=WINDOW_GEOMETRY_CONFIRM_TIMEOUT_SECONDS,
				),
			]
		)
		self.assertEqual(library.sizes, [(799, 450), (800, 450)])

	def test_render_surface_refresh_nudges_then_restores_the_mapped_window(self) -> None:
		class FakeX11Library:
			def __init__(self) -> None:
				self.events: list[object] = []

			def XGetGeometry(
					self,
					_display: object,
					window: int,
					_root_return: Any,
					_x_return: Any,
					_y_return: Any,
					width_return: Any,
					height_return: Any,
					_border_width_return: Any,
					_depth_return: Any,
			) -> int:
				self.events.append(("geometry", window))
				ctypes.cast(width_return, ctypes.POINTER(ctypes.c_uint))[0] = 1600
				ctypes.cast(height_return, ctypes.POINTER(ctypes.c_uint))[0] = 900
				return 1

			def XSync(self, _display: object, discard: int) -> int:
				self.events.append(("sync", discard))
				return 0

			def XResizeWindow(
					self,
					_display: object,
					window: int,
					width: int,
					height: int,
			) -> int:
				self.events.append(("resize", window, width, height))
				return 0

		library = FakeX11Library()
		mapper = object.__new__(_X11)
		mapper.library = library  # type: ignore[assignment]
		mapper.display = ctypes.c_void_p(1)

		with (
			mock.patch.object(
				mapper,
				"_wait_for_window_size",
				return_value=True,
			) as wait_for_size,
			mock.patch("ptlinux.gamebox_runtime.time.sleep") as sleep,
		):
			self.assertTrue(mapper.refresh_render_surface(12))

		sleep.assert_called_once_with(WINDOW_SURFACE_REFRESH_DELAY_SECONDS)
		wait_for_size.assert_has_calls(
			[
				mock.call(
					12,
					(1599, 900),
					timeout_seconds=WINDOW_NUDGE_CONFIRM_TIMEOUT_SECONDS,
				),
				mock.call(
					12,
					(1600, 900),
					timeout_seconds=WINDOW_GEOMETRY_CONFIRM_TIMEOUT_SECONDS,
				),
			]
		)
		self.assertEqual(
			library.events,
			[
				("geometry", 12),
				("resize", 12, 1599, 900),
				("sync", 0),
				("resize", 12, 1600, 900),
				("sync", 0),
			],
		)

	def test_render_surface_refresh_restores_size_after_an_interrupted_wait(self) -> None:
		class FakeX11Library:
			def __init__(self) -> None:
				self.events: list[object] = []

			def XGetGeometry(
					self,
					_display: object,
					_window: int,
					_root_return: Any,
					_x_return: Any,
					_y_return: Any,
					width_return: Any,
					height_return: Any,
					_border_width_return: Any,
					_depth_return: Any,
			) -> int:
				ctypes.cast(width_return, ctypes.POINTER(ctypes.c_uint))[0] = 1024
				ctypes.cast(height_return, ctypes.POINTER(ctypes.c_uint))[0] = 768
				return 1

			def XResizeWindow(
					self,
					_display: object,
					window: int,
					width: int,
					height: int,
			) -> int:
				self.events.append(("resize", window, width, height))
				return 0

			def XSync(self, _display: object, discard: int) -> int:
				self.events.append(("sync", discard))
				return 0

		library = FakeX11Library()
		mapper = object.__new__(_X11)
		mapper.library = library  # type: ignore[assignment]
		mapper.display = ctypes.c_void_p(1)

		with (
			mock.patch.object(
				mapper,
				"_wait_for_window_size",
				return_value=True,
			),
			mock.patch(
				"ptlinux.gamebox_runtime.time.sleep",
				side_effect=RuntimeError("interrupted"),
			),
			self.assertRaisesRegex(RuntimeError, "interrupted"),
		):
			mapper.refresh_render_surface(12)

		self.assertEqual(
			library.events,
			[
				("resize", 12, 1023, 768),
				("sync", 0),
				("resize", 12, 1024, 768),
				("sync", 0),
			],
		)

	def test_render_surface_refresh_declines_when_geometry_is_unavailable(self) -> None:
		library = mock.Mock()
		library.XGetGeometry.return_value = 0
		mapper = object.__new__(_X11)
		mapper.library = library
		mapper.display = ctypes.c_void_p(1)

		self.assertFalse(mapper.refresh_render_surface(12))

		library.XResizeWindow.assert_not_called()
		library.XSync.assert_not_called()

	def test_render_surface_refresh_reports_a_declined_nudge(self) -> None:
		class FakeX11Library:
			def __init__(self) -> None:
				self.sizes: list[tuple[int, int]] = []

			def XResizeWindow(
					self,
					_display: object,
					_window: int,
					width: int,
					height: int,
			) -> int:
				self.sizes.append((width, height))
				return 0

			def XSync(self, _display: object, _discard: int) -> int:
				return 0

		library = FakeX11Library()
		mapper = object.__new__(_X11)
		mapper.library = library  # type: ignore[assignment]
		mapper.display = ctypes.c_void_p(1)

		with mock.patch.object(
				mapper,
				"_wait_for_window_size",
				side_effect=[False, True],
		):
			self.assertFalse(
				mapper.refresh_render_surface(12, target_size=(1280, 960))
			)

		self.assertEqual(library.sizes, [(1279, 960), (1280, 960)])

	def test_render_surface_refresh_nudges_height_for_a_one_pixel_width(self) -> None:
		class FakeX11Library:
			def __init__(self) -> None:
				self.sizes: list[tuple[int, int]] = []

			def XGetGeometry(
					self,
					_display: object,
					_window: int,
					_root_return: Any,
					_x_return: Any,
					_y_return: Any,
					width_return: Any,
					height_return: Any,
					_border_width_return: Any,
					_depth_return: Any,
			) -> int:
				ctypes.cast(width_return, ctypes.POINTER(ctypes.c_uint))[0] = 1
				ctypes.cast(height_return, ctypes.POINTER(ctypes.c_uint))[0] = 2
				return 1

			def XResizeWindow(
					self,
					_display: object,
					_window: int,
					width: int,
					height: int,
			) -> int:
				self.sizes.append((width, height))
				return 0

			def XSync(self, _display: object, _discard: int) -> int:
				return 0

		library = FakeX11Library()
		mapper = object.__new__(_X11)
		mapper.library = library  # type: ignore[assignment]
		mapper.display = ctypes.c_void_p(1)

		with (
			mock.patch.object(
				mapper,
				"_wait_for_window_size",
				return_value=True,
			),
			mock.patch("ptlinux.gamebox_runtime.time.sleep"),
		):
			self.assertTrue(mapper.refresh_render_surface(12))

		self.assertEqual(library.sizes, [(1, 1), (1, 2)])

	def test_render_surface_refresh_declines_an_unnudgeable_window(self) -> None:
		def get_one_by_one_geometry(
				_display: object,
				_window: int,
				_root_return: Any,
				_x_return: Any,
				_y_return: Any,
				width_return: Any,
				height_return: Any,
				_border_width_return: Any,
				_depth_return: Any,
		) -> int:
			ctypes.cast(width_return, ctypes.POINTER(ctypes.c_uint))[0] = 1
			ctypes.cast(height_return, ctypes.POINTER(ctypes.c_uint))[0] = 1
			return 1

		library = mock.Mock()
		library.XGetGeometry.side_effect = get_one_by_one_geometry
		mapper = object.__new__(_X11)
		mapper.library = library
		mapper.display = ctypes.c_void_p(1)

		self.assertFalse(mapper.refresh_render_surface(12))

		library.XResizeWindow.assert_not_called()
		library.XSync.assert_not_called()

	def test_focus_window_raises_then_focuses_the_exact_client(self) -> None:
		class FakeX11Library:
			def __init__(self) -> None:
				self.events: list[object] = []

			def XMapRaised(self, _display: object, window: int) -> int:
				self.events.append(("raise", window))
				return 0

			def XSetInputFocus(
					self,
					_display: object,
					window: int,
					revert_to: int,
					timestamp: int,
			) -> int:
				self.events.append(("focus", window, revert_to, timestamp))
				return 0

			def XSync(self, _display: object, discard: int) -> int:
				self.events.append(("sync", discard))
				return 0

		library = FakeX11Library()
		mapper = object.__new__(_X11)
		mapper.library = library  # type: ignore[assignment]
		mapper.display = ctypes.c_void_p(1)

		mapper.focus_window(12)

		self.assertEqual(
			library.events,
			[("raise", 12), ("focus", 12, 2, 0), ("sync", 0)],
		)

	def test_restore_input_focus_does_not_raise_the_client(self) -> None:
		library = mock.Mock()
		mapper = object.__new__(_X11)
		mapper.library = library
		mapper.display = ctypes.c_void_p(1)

		mapper.restore_input_focus(12)

		library.XMapRaised.assert_not_called()
		library.XSetInputFocus.assert_called_once_with(
			mapper.display,
			12,
			2,
			0,
		)
		library.XSync.assert_called_once_with(mapper.display, 0)

	def test_game_focus_waits_for_the_dashboard_handoff(self) -> None:
		mapper = mock.Mock()
		mapper.window_state.return_value = 1
		mapper.window_is_active.return_value = True
		mapper.window_is_focused.side_effect = [False, True]

		with mock.patch("ptlinux.gamebox_runtime.time.sleep") as sleep:
			_focus_game_window(mapper, 12)

		sleep.assert_called_once_with(WINDOW_FOCUS_DELAY_SECONDS)
		mapper.activate_window.assert_not_called()
		mapper.restore_input_focus.assert_called_once_with(12)

	def test_host_minimize_request_never_raises_the_window(self) -> None:
		mapper = object.__new__(_X11)
		mapper.library = mock.Mock()
		mapper.library.XDefaultScreen.return_value = 2
		mapper.library.XIconifyWindow.return_value = 1
		mapper.display = ctypes.c_void_p(1)

		self.assertTrue(mapper.minimize_window(12))

		mapper.library.XIconifyWindow.assert_called_once_with(
			mapper.display,
			12,
			2,
		)
		mapper.library.XMapRaised.assert_not_called()
		mapper.library.XSync.assert_called_once_with(mapper.display, 0)

	def test_game_focus_failure_is_nonfatal(self) -> None:
		mapper = mock.Mock()
		mapper.window_state.side_effect = RuntimeError("test failure")
		output = io.StringIO()

		with (
			mock.patch("ptlinux.gamebox_runtime.time.sleep"),
			contextlib.redirect_stderr(output),
		):
			_focus_game_window(mapper, 12)

		self.assertIn("continuing normally", output.getvalue())

	def test_focus_repair_does_not_reactivate_a_background_window(self) -> None:
		mapper = mock.Mock()
		mapper.window_state.return_value = 1
		mapper.window_is_active.return_value = False

		self.assertFalse(_repair_game_window_focus(mapper, 12))

		mapper.restore_input_focus.assert_not_called()
		mapper.activate_window.assert_not_called()
		mapper.focus_window.assert_not_called()

	def test_focus_repair_restores_input_without_raising_the_active_window(self) -> None:
		mapper = mock.Mock()
		mapper.window_state.return_value = 1
		mapper.window_is_active.return_value = True
		mapper.window_is_focused.side_effect = [False, True]

		self.assertTrue(_repair_game_window_focus(mapper, 12))

		mapper.restore_input_focus.assert_called_once_with(12)
		mapper.activate_window.assert_not_called()
		mapper.focus_window.assert_not_called()

	def test_window_scaling_failure_is_nonfatal(self) -> None:
		mapper = mock.Mock()
		mapper.enable_window_scaling.side_effect = RuntimeError("test failure")
		output = io.StringIO()

		with contextlib.redirect_stderr(output):
			self.assertFalse(_enable_game_window_scaling(mapper, 12))

		self.assertIn("Warning", output.getvalue())
		self.assertIn("continue normally", output.getvalue())

	def test_scaling_monitor_failure_leaves_a_consistent_fixed_window(self) -> None:
		mapper = mock.Mock()
		mapper.select_scaling_hint_events.side_effect = RuntimeError("test failure")
		process = mock.Mock()
		process.wait.return_value = 0
		output = io.StringIO()

		with contextlib.redirect_stderr(output):
			self.assertEqual(
				_maintain_game_window_scaling(mapper, process, 12),
				0,
			)

		mapper.enable_window_scaling.assert_not_called()
		self.assertIn("fixed-size for consistency", output.getvalue())
		process.wait.assert_called_once_with()

	def test_scaling_maintenance_reapplies_hints_after_wine_replaces_them(
			self,
	) -> None:
		mapper = mock.Mock()
		mapper.enable_window_scaling.return_value = True
		mapper.wait_for_scaling_hint_change.side_effect = [True, False]
		process = mock.Mock()
		process.poll.side_effect = [None, None, 0]
		process.wait.return_value = 0

		with contextlib.redirect_stderr(io.StringIO()):
			self.assertEqual(
				_maintain_game_window_scaling(mapper, process, 12),
				0,
			)

		mapper.select_scaling_hint_events.assert_called_once_with(12)
		self.assertEqual(
			mapper.enable_window_scaling.call_args_list,
			[
				mock.call(12),
				mock.call(12, confirm=False),
			],
		)
		process.wait.assert_called_once_with()

	def test_scaling_maintenance_stops_after_repeated_repair_failures(self) -> None:
		mapper = mock.Mock()
		mapper.enable_window_scaling.side_effect = [
			True,
			*[RuntimeError("test failure")] * WINDOW_SCALING_REPAIR_LIMIT,
		]
		mapper.wait_for_scaling_hint_change.return_value = True
		process = mock.Mock()
		process.poll.return_value = None
		process.wait.return_value = 0
		output = io.StringIO()

		with (
			contextlib.redirect_stderr(output),
			mock.patch("ptlinux.gamebox_runtime._maintain_game_window_focus",
				side_effect=lambda _mapper, child, _window, **_kwargs: child.wait()),
		):
			self.assertEqual(
				_maintain_game_window_scaling(mapper, process, 12),
				0,
			)

		self.assertEqual(
			mapper.enable_window_scaling.call_count,
			1 + WINDOW_SCALING_REPAIR_LIMIT,
		)
		self.assertIn("disabled after repeated failures", output.getvalue())
		process.wait.assert_called_once_with()

	def test_fixed_window_maintenance_preserves_the_focus_repair(self) -> None:
		mapper = mock.Mock()
		process = mock.Mock()
		process.poll.side_effect = [None, None, 0]
		process.wait.return_value = 0
		output = io.StringIO()

		with (
			mock.patch(
				"ptlinux.gamebox_runtime.time.monotonic",
				side_effect=[0.0, 0.5, 1.0, 1.0],
			),
			mock.patch("ptlinux.gamebox_runtime.time.sleep") as sleep,
			mock.patch(
				"ptlinux.gamebox_runtime._repair_game_window_focus"
			) as repair_focus,
			contextlib.redirect_stderr(output),
		):
			self.assertEqual(
				_maintain_game_window_focus(mapper, process, 12),
				0,
			)

		sleep.assert_has_calls([mock.call(0.5), mock.call(0.5)])
		repair_focus.assert_called_once_with(mapper, 12)
		mapper.enable_window_scaling.assert_not_called()
		mapper.select_scaling_hint_events.assert_not_called()
		process.wait.assert_called_once_with()
		self.assertIn("focus monitoring active", output.getvalue())

	def test_gamescope_maintenance_repairs_focus_without_changing_geometry(
			self,
	) -> None:
		mapper = mock.Mock()
		process = mock.Mock()
		process.poll.side_effect = [None, None, 0]
		process.wait.return_value = 0

		with (
			mock.patch(
				"ptlinux.gamebox_runtime.time.monotonic",
				side_effect=[0.0, 0.1, 0.25, 0.25],
			),
			mock.patch("ptlinux.gamebox_runtime.time.sleep") as sleep,
			mock.patch(
				"ptlinux.gamebox_runtime._repair_gamescope_game_window_focus"
			) as repair_focus,
		):
			self.assertEqual(
				_maintain_gamescope_game_window_focus(mapper, process, 12),
				0,
			)

		sleep.assert_has_calls(
			[
				mock.call(GAMESCOPE_FOCUS_REPAIR_INTERVAL_SECONDS),
				mock.call(GAMESCOPE_FOCUS_REPAIR_INTERVAL_SECONDS),
			]
		)
		repair_focus.assert_called_once_with(mapper, 12)
		mapper.enable_window_scaling.assert_not_called()
		mapper.select_scaling_hint_events.assert_not_called()
		process.wait.assert_called_once_with()

	def test_gamescope_focus_repair_never_activates_or_raises_the_host(self) -> None:
		mapper = mock.Mock()
		mapper.window_state.return_value = 1
		mapper.window_is_focused.side_effect = [False, True]

		self.assertTrue(_repair_gamescope_game_window_focus(mapper, 12))

		mapper.restore_input_focus.assert_called_once_with(12)
		mapper.activate_window.assert_not_called()
		mapper.focus_window.assert_not_called()

	def test_gamescope_focus_repair_stops_while_the_host_is_inactive(self) -> None:
		mapper = mock.Mock()
		with tempfile.TemporaryDirectory() as temporary:
			state_file = Path(temporary) / "focus"
			state_file.write_text("0 100.0\n", encoding="ascii")
			with mock.patch.dict(
				os.environ,
				{GAMESCOPE_HOST_FOCUS_STATE_ENV: str(state_file)},
			):
				self.assertFalse(_repair_gamescope_game_window_focus(mapper, 12))

		mapper.window_state.assert_not_called()
		mapper.restore_input_focus.assert_not_called()

	def test_gamescope_host_focus_state_must_be_active_and_fresh(self) -> None:
		with tempfile.TemporaryDirectory() as temporary:
			state_file = Path(temporary) / "focus"
			environment = {GAMESCOPE_HOST_FOCUS_STATE_ENV: str(state_file)}
			state_file.write_text("1 100.0\n", encoding="ascii")
			self.assertTrue(
				_gamescope_host_focus_is_allowed(
					environment=environment,
					now=100.1,
				)
			)
			self.assertFalse(
				_gamescope_host_focus_is_allowed(
					environment=environment,
					now=100.0 + GAMESCOPE_HOST_FOCUS_STATE_MAX_AGE_SECONDS + 0.01,
				)
			)
			state_file.write_text("0 101.0\n", encoding="ascii")
			self.assertFalse(
				_gamescope_host_focus_is_allowed(
					environment=environment,
					now=101.0,
				)
			)

	def test_gamescope_host_focus_defaults_to_legacy_behavior_without_bridge(
			self,
	) -> None:
		self.assertTrue(_gamescope_host_focus_is_allowed(environment={}, now=10.0))

	def test_gamescope_resolver_keeps_a_normal_window_on_the_fast_path(self) -> None:
		mapper = mock.Mock()
		mapper.window_state.return_value = 1

		self.assertEqual(
			_resolve_gamescope_game_window(
				mapper,
				12,
				window_title="PristonTale EU",
				excluded_window_ids={4},
			),
			12,
		)

		mapper.find_first_window.assert_not_called()

	def test_gamescope_resolver_recovers_a_nested_login_iconify(self) -> None:
		mapper = mock.Mock()
		mapper.window_state.return_value = 3
		mapper.restore_normal_window_state.return_value = True
		output = io.StringIO()

		with contextlib.redirect_stderr(output):
			self.assertEqual(
				_resolve_gamescope_game_window(
					mapper,
					12,
					window_title="PristonTale EU",
					excluded_window_ids={4},
				),
				12,
			)

		mapper.restore_normal_window_state.assert_called_once_with(12)
		mapper.find_first_window.assert_not_called()
		mapper.activate_window.assert_not_called()
		mapper.focus_window.assert_not_called()
		self.assertIn("surface visible inside Gamescope", output.getvalue())

	def test_gamescope_resolver_follows_replacement_after_iconify_recovery_fails(
			self,
	) -> None:
		mapper = mock.Mock()
		mapper.window_state.return_value = 3
		mapper.restore_normal_window_state.return_value = False
		mapper.find_first_window.return_value = (21, "PristonTale EU V21.77.86")

		with mock.patch(
			"ptlinux.gamebox_runtime._apply_game_window_identity"
		) as apply_identity, contextlib.redirect_stderr(io.StringIO()):
			self.assertEqual(
				_resolve_gamescope_game_window(
					mapper,
					12,
					window_title="PristonTale EU",
					excluded_window_ids={4},
				),
				21,
			)

		mapper.find_first_window.assert_called_once_with(
			"PristonTale EU",
			excluded_window_ids={4, 12},
		)
		apply_identity.assert_called_once_with(mapper, 21)

	def test_gamescope_resolver_follows_a_replacement_login_window(self) -> None:
		mapper = mock.Mock()
		mapper.window_state.return_value = None
		mapper.find_first_window.return_value = (
			21,
			"PristonTale EU V21.77.86",
		)
		output = io.StringIO()

		with (
			mock.patch(
				"ptlinux.gamebox_runtime._apply_game_window_identity"
			) as apply_identity,
			contextlib.redirect_stderr(output),
		):
			self.assertEqual(
				_resolve_gamescope_game_window(
					mapper,
					12,
					window_title="PristonTale EU",
					excluded_window_ids={4},
				),
				21,
			)

		mapper.find_first_window.assert_called_once_with(
			"PristonTale EU",
			excluded_window_ids={4, 12},
		)
		apply_identity.assert_called_once_with(mapper, 21)
		self.assertIn("following it", output.getvalue())

	def test_gamescope_resolver_never_focuses_a_stale_window(self) -> None:
		mapper = mock.Mock()
		mapper.window_state.return_value = None
		mapper.window_size.return_value = None
		mapper.find_first_window.return_value = None

		self.assertIsNone(
			_resolve_gamescope_game_window(
				mapper,
				12,
				window_title="PristonTale EU",
				excluded_window_ids=set(),
			)
		)

		mapper.restore_input_focus.assert_not_called()
		mapper.focus_window.assert_not_called()

	def test_startup_guard_confirms_stability_only_after_its_deadline(self) -> None:
		mapper = mock.Mock()
		process = mock.Mock()
		process.poll.return_value = None

		with mock.patch(
				"ptlinux.gamebox_runtime.time.monotonic",
				side_effect=[0.0, 12.0],
		):
			self.assertTrue(
				_guard_game_window_startup(
					mapper,
					process,
					12,
					borderless=False,
				)
			)

		mapper.window_state.assert_not_called()

	def test_startup_guard_respects_a_minimized_window(self) -> None:
		mapper = mock.Mock()
		mapper.window_is_borderless.return_value = True
		mapper.window_state.return_value = 3
		mapper.window_is_fullscreen_or_maximized.return_value = False
		process = mock.Mock()
		process.poll.return_value = None
		output = io.StringIO()

		with (
			mock.patch(
				"ptlinux.gamebox_runtime.time.monotonic",
				side_effect=[0.0, 0.1],
			),
			mock.patch("ptlinux.gamebox_runtime.time.sleep") as sleep,
			mock.patch("ptlinux.gamebox_runtime._prepare_game_window") as prepare,
			contextlib.redirect_stderr(output),
		):
			self.assertFalse(
				_guard_game_window_startup(
					mapper,
					process,
					12,
					borderless=True,
				)
			)

		mapper.activate_window.assert_not_called()
		prepare.assert_not_called()
		mapper.focus_window.assert_not_called()
		sleep.assert_not_called()
		self.assertIn("leaving it minimized", output.getvalue())

	def test_startup_guard_recovers_an_early_login_style_reset_while_normal(self) -> None:
		mapper = mock.Mock()
		mapper.window_is_borderless.side_effect = [False, False, True]
		mapper.window_state.return_value = 1
		mapper.window_is_fullscreen_or_maximized.return_value = False
		process = mock.Mock()
		process.poll.side_effect = [None, 0]
		output = io.StringIO()

		with (
			mock.patch(
				"ptlinux.gamebox_runtime.time.monotonic",
				side_effect=[0.0, 0.1],
			),
			mock.patch("ptlinux.gamebox_runtime.time.sleep"),
			mock.patch("ptlinux.gamebox_runtime._prepare_game_window") as prepare,
			contextlib.redirect_stderr(output),
		):
			_guard_game_window_startup(
				mapper,
				process,
				12,
				borderless=True,
			)

		prepare.assert_called_once()
		self.assertIn("changed its window layout", output.getvalue())

	def test_startup_guard_leaves_a_stable_window_untouched(self) -> None:
		mapper = mock.Mock()
		mapper.window_is_borderless.return_value = True
		mapper.window_state.return_value = 1
		mapper.window_is_fullscreen_or_maximized.return_value = False
		process = mock.Mock()
		process.poll.side_effect = [None, 0]

		with (
			mock.patch(
				"ptlinux.gamebox_runtime.time.monotonic",
				side_effect=[0.0, 0.1],
			),
			mock.patch("ptlinux.gamebox_runtime.time.sleep") as sleep,
		):
			_guard_game_window_startup(
				mapper,
				process,
				12,
				borderless=True,
			)

		mapper.activate_window.assert_not_called()
		mapper.focus_window.assert_not_called()
		sleep.assert_called_once_with(WINDOW_STARTUP_POLL_SECONDS)

	def test_startup_guard_recovers_reapplied_fullscreen_in_decorated_mode(self) -> None:
		mapper = mock.Mock()
		mapper.window_state.return_value = 1
		mapper.window_is_fullscreen_or_maximized.return_value = True
		process = mock.Mock()
		process.poll.side_effect = [None, 0]
		output = io.StringIO()

		with (
			mock.patch(
				"ptlinux.gamebox_runtime.time.monotonic",
				side_effect=[0.0, 0.1],
			),
			mock.patch("ptlinux.gamebox_runtime.time.sleep"),
			mock.patch("ptlinux.gamebox_runtime._prepare_game_window") as prepare,
			contextlib.redirect_stderr(output),
		):
			_guard_game_window_startup(
				mapper,
				process,
				12,
				borderless=False,
			)

		prepare.assert_called_once_with(
			mapper,
			12,
			borderless=False,
			suppress_wm_ping=False,
			raise_window=False,
		)
		self.assertIn("entered fullscreen/maximized mode", output.getvalue())

	def test_wm_ping_failure_does_not_skip_normal_window_mapping(self) -> None:
		events: list[object] = []
		output = io.StringIO()

		class FakeMapper:
			def suppress_wm_ping(self, window: int) -> bool:
				events.append(("suppress", window))
				raise RuntimeError("test failure")

			def map_window(self, window: int, *, borderless: bool) -> None:
				events.append(("map", window, borderless))

			def force_windowed_state(self, window: int) -> bool:
				events.append(("windowed", window))
				return False

			def refresh_render_surface(self, window: int) -> bool:
				events.append(("refresh", window))
				return True

		with contextlib.redirect_stderr(output):
			_prepare_game_window(
				FakeMapper(),  # type: ignore[arg-type]
				12,
				borderless=True,
				suppress_wm_ping=True,
			)

		self.assertEqual(
			events,
			[
				("suppress", 12),
				("map", 12, True),
				("windowed", 12),
				("refresh", 12),
			],
		)
		self.assertIn("continuing normally", output.getvalue())

	def test_borderless_preparation_restores_the_pre_reframe_size(self) -> None:
		events: list[object] = []

		class FakeMapper:
			def map_window(
					self,
					window: int,
					*,
					borderless: bool,
			) -> tuple[int, int]:
				events.append(("map", window, borderless))
				return 1024, 768

			def force_windowed_state(self, window: int) -> bool:
				events.append(("windowed", window))
				return False

			def refresh_render_surface(
					self,
					window: int,
					*,
					target_size: tuple[int, int] | None = None,
			) -> bool:
				events.append(("refresh", window, target_size))
				return True

		with mock.patch("ptlinux.gamebox_runtime.time.sleep") as sleep:
			_prepare_game_window(
				FakeMapper(),  # type: ignore[arg-type]
				12,
				borderless=True,
				suppress_wm_ping=False,
			)

		sleep.assert_called_once_with(WINDOW_SURFACE_SETTLE_SECONDS)
		self.assertEqual(
			events,
			[
				("map", 12, True),
				("windowed", 12),
				("refresh", 12, (1024, 768)),
			],
		)

	def test_decorated_window_resynchronizes_its_render_surface(self) -> None:
		events: list[object] = []

		class FakeMapper:
			def map_window(
					self,
					window: int,
					*,
					borderless: bool,
			) -> tuple[int, int]:
				events.append(("map", window, borderless))
				return 1280, 960

			def force_windowed_state(self, window: int) -> bool:
				events.append(("windowed", window))
				return False

			def refresh_render_surface(
					self,
					window: int,
					*,
					target_size: tuple[int, int] | None = None,
			) -> bool:
				events.append(("refresh", window, target_size))
				return True

		with mock.patch("ptlinux.gamebox_runtime.time.sleep") as sleep:
			_prepare_game_window(
				FakeMapper(),  # type: ignore[arg-type]
				12,
				borderless=False,
				suppress_wm_ping=False,
			)

		sleep.assert_called_once_with(WINDOW_SURFACE_SETTLE_SECONDS)
		self.assertEqual(
			events,
			[
				("map", 12, False),
				("windowed", 12),
				("refresh", 12, (1280, 960)),
			],
		)

	def test_windowed_preparation_uses_the_geometry_restored_by_the_wm(self) -> None:
		events: list[object] = []

		class FakeMapper:
			def map_window(
					self,
					window: int,
					*,
					borderless: bool,
			) -> tuple[int, int]:
				events.append(("map", window, borderless))
				return 1920, 1080

			def force_windowed_state(self, window: int) -> bool:
				events.append(("windowed", window))
				return True

			def window_size(self, window: int) -> tuple[int, int]:
				events.append(("size", window))
				return 1280, 960

			def refresh_render_surface(
					self,
					window: int,
					*,
					target_size: tuple[int, int] | None = None,
			) -> bool:
				events.append(("refresh", window, target_size))
				return True

		with mock.patch("ptlinux.gamebox_runtime.time.sleep"):
			_prepare_game_window(
				FakeMapper(),  # type: ignore[arg-type]
				12,
				borderless=False,
				suppress_wm_ping=False,
			)

		self.assertEqual(
			events,
			[
				("map", 12, False),
				("windowed", 12),
				("size", 12),
				("refresh", 12, (1280, 960)),
			],
		)

	def test_surface_refresh_failure_does_not_abort_window_mapping(self) -> None:
		events: list[object] = []
		output = io.StringIO()

		class FakeMapper:
			def map_window(self, window: int, *, borderless: bool) -> None:
				events.append(("map", window, borderless))

			def force_windowed_state(self, window: int) -> bool:
				events.append(("windowed", window))
				return False

			def refresh_render_surface(self, window: int) -> bool:
				events.append(("refresh", window))
				raise RuntimeError("test failure")

		with contextlib.redirect_stderr(output):
			_prepare_game_window(
				FakeMapper(),  # type: ignore[arg-type]
				12,
				borderless=True,
				suppress_wm_ping=False,
			)

		self.assertEqual(
			events,
			[("map", 12, True), ("windowed", 12), ("refresh", 12)],
		)
		self.assertIn("continuing normally", output.getvalue())

	def test_snapshots_existing_windows_before_starting_game(self) -> None:
		events: list[object] = []

		class FakeMapper:
			def __init__(self) -> None:
				self.events = events
				self.events.append("mapper")
				self.active = False

			def root_window_ids(self) -> set[int]:
				self.events.append("snapshot")
				return {10}

			def find_first_window(
					self,
					_title: str,
					*,
					excluded_window_ids: Collection[int],
			) -> tuple[int, str]:
				self.events.append(("find", set(excluded_window_ids)))
				return 12, "PristonTale EU V21.75.83"

			def set_window_identity(self, window: int) -> None:
				self.events.append(("identity", window))

			def map_window(self, window: int, *, borderless: bool, raise_window: bool = True) -> None:
				assert not raise_window
				self.events.append(("map", window, borderless))

			def force_windowed_state(self, window: int) -> bool:
				self.events.append(("windowed", window))
				return False

			def refresh_render_surface(self, window: int) -> bool:
				self.events.append(("refresh", window))
				return True

			def focus_window(self, window: int) -> None:
				self.events.append(("focus", window))

			def window_state(self, _window: int) -> int:
				return 1

			def activate_window(self, window: int) -> bool:
				self.events.append(("activate", window))
				self.active = True
				return True

			def window_is_active(self, _window: int) -> bool:
				return self.active

			def window_is_focused(self, _window: int) -> bool:
				return False

			def restore_input_focus(self, window: int) -> None:
				self.events.append(("focus", window))

			def suppress_wm_ping(self, window: int) -> bool:
				self.events.append(("suppress", window))
				return True

			def close(self) -> None:
				self.events.append("close")

		class FakeProcess:
			def __init__(self) -> None:
				self.events = events
				self.finished = False

			def poll(self) -> int | None:
				self.events.append("poll")
				return 0 if self.finished else None

			def wait(self) -> int:
				self.events.append("wait")
				return 0

		def start_process(_command: list[str]) -> FakeProcess:
			events.append("process")
			return FakeProcess()

		def guard_startup(
				_mapper: object,
				_process: FakeProcess,
				window: int,
				*,
				borderless: bool,
		) -> None:
			events.append(("guard", window, borderless))
			_process.finished = True

		with (
			mock.patch("ptlinux.gamebox_runtime._X11", FakeMapper),
			mock.patch("ptlinux.gamebox_runtime.subprocess.Popen", start_process),
			mock.patch(
				"ptlinux.gamebox_runtime._guard_game_window_startup",
				guard_startup,
			),
			mock.patch("ptlinux.gamebox_runtime.WINDOW_READY_DELAY_SECONDS", 0.0),
			mock.patch("ptlinux.gamebox_runtime.WINDOW_FOCUS_DELAY_SECONDS", 0.0),
		):
			self.assertEqual(
				run_game_window(
					["game"],
					borderless=True,
					suppress_wm_ping=True,
				),
				0,
			)

		self.assertLess(events.index("snapshot"), events.index("process"))
		self.assertIn(("find", {10}), events)
		self.assertLess(events.index(("identity", 12)), events.index(("map", 12, True)))
		self.assertLess(events.index(("suppress", 12)), events.index(("map", 12, True)))
		self.assertIn(("map", 12, True), events)
		self.assertLess(
			events.index(("map", 12, True)),
			events.index(("windowed", 12)),
		)
		self.assertLess(events.index(("windowed", 12)), events.index(("refresh", 12)))
		self.assertLess(events.index(("refresh", 12)), events.index(("focus", 12)))
		self.assertLess(events.index(("activate", 12)), events.index(("focus", 12)))
		self.assertLess(
			events.index(("focus", 12)),
			events.index(("guard", 12, True)),
		)
		self.assertLess(events.index(("guard", 12, True)), events.index("wait"))
		self.assertEqual(events[-1], "close")

	def test_keeps_a_decorated_window_fixed_by_default(self) -> None:
		mapper = mock.Mock()
		mapper.root_window_ids.return_value = set()
		mapper.find_first_window.return_value = (
			12,
			"PristonTale EU V21.75.83",
		)
		process = mock.Mock()
		process.poll.return_value = None
		process.wait.return_value = 0

		with (
			mock.patch("ptlinux.gamebox_runtime._X11", return_value=mapper),
			mock.patch(
				"ptlinux.gamebox_runtime.subprocess.Popen",
				return_value=process,
			),
			mock.patch(
				"ptlinux.gamebox_runtime.time.monotonic",
				return_value=0.0,
			),
			mock.patch("ptlinux.gamebox_runtime.WINDOW_READY_DELAY_SECONDS", 0.0),
			mock.patch("ptlinux.gamebox_runtime._prepare_game_window"),
			mock.patch("ptlinux.gamebox_runtime._focus_game_window"),
			mock.patch(
				"ptlinux.gamebox_runtime._guard_game_window_startup",
				return_value=True,
			) as guard,
			mock.patch(
				"ptlinux.gamebox_runtime._maintain_game_window_scaling",
				return_value=0,
			) as maintain_scaling,
			mock.patch(
				"ptlinux.gamebox_runtime._maintain_game_window_focus",
				return_value=0,
			) as maintain_focus,
		):
			self.assertEqual(
				run_game_window(["game"]),
				0,
			)

		guard.assert_called_once_with(mapper, process, 12, borderless=False)
		maintain_scaling.assert_not_called()
		maintain_focus.assert_called_once_with(
			mapper,
			process,
			12,
			window_title=WINDOW_TITLE,
			existing_window_ids=set(),
			expected_pid=mapper.window_pid.return_value,
		)
		mapper.close.assert_called_once_with()

	def test_enables_scaling_only_for_an_explicit_opt_in_after_stable_startup(
			self,
	) -> None:
		mapper = mock.Mock()
		mapper.root_window_ids.return_value = set()
		mapper.find_first_window.return_value = (
			12,
			"PristonTale EU V21.75.83",
		)
		process = mock.Mock()
		process.poll.return_value = None
		process.wait.return_value = 0

		with (
			mock.patch("ptlinux.gamebox_runtime._X11", return_value=mapper),
			mock.patch(
				"ptlinux.gamebox_runtime.subprocess.Popen",
				return_value=process,
			),
			mock.patch(
				"ptlinux.gamebox_runtime.time.monotonic",
				return_value=0.0,
			),
			mock.patch("ptlinux.gamebox_runtime.WINDOW_READY_DELAY_SECONDS", 0.0),
			mock.patch("ptlinux.gamebox_runtime._prepare_game_window"),
			mock.patch("ptlinux.gamebox_runtime._focus_game_window"),
			mock.patch(
				"ptlinux.gamebox_runtime._guard_game_window_startup",
				return_value=True,
			),
			mock.patch(
				"ptlinux.gamebox_runtime._maintain_game_window_scaling",
				return_value=0,
			) as maintain_scaling,
			mock.patch(
				"ptlinux.gamebox_runtime._maintain_game_window_focus",
				return_value=0,
			) as maintain_focus,
		):
			self.assertEqual(
				run_game_window(["game"], allow_window_resizing=True),
				0,
			)

		maintain_scaling.assert_called_once_with(
			mapper, process, 12, window_title=WINDOW_TITLE,
			existing_window_ids=set(), expected_pid=mapper.window_pid.return_value,
		)
		maintain_focus.assert_not_called()
		mapper.close.assert_called_once_with()

	def test_gamescope_scaling_leaves_geometry_to_gamescope_and_repairs_focus(
			self,
	) -> None:
		mapper = mock.Mock()
		mapper.root_window_ids.return_value = set()
		mapper.find_first_window.return_value = (
			12,
			"PristonTale EU V21.75.83",
		)
		process = mock.Mock()
		process.poll.return_value = None
		process.wait.return_value = 0

		with (
			mock.patch("ptlinux.gamebox_runtime._X11", return_value=mapper),
			mock.patch(
				"ptlinux.gamebox_runtime.subprocess.Popen",
				return_value=process,
			),
			mock.patch(
				"ptlinux.gamebox_runtime.time.monotonic",
				return_value=0.0,
			),
			mock.patch("ptlinux.gamebox_runtime.WINDOW_READY_DELAY_SECONDS", 0.0),
			mock.patch(
				"ptlinux.gamebox_runtime._prepare_game_window"
			) as prepare,
			mock.patch(
				"ptlinux.gamebox_runtime._focus_game_window"
			) as focus,
			mock.patch(
				"ptlinux.gamebox_runtime._guard_game_window_startup",
				return_value=True,
			) as guard,
			mock.patch(
				"ptlinux.gamebox_runtime._maintain_game_window_scaling",
				return_value=0,
			) as maintain_scaling,
			mock.patch(
				"ptlinux.gamebox_runtime._maintain_game_window_focus",
				return_value=0,
			) as maintain_focus,
			mock.patch(
				"ptlinux.gamebox_runtime._maintain_gamescope_game_window_focus",
				return_value=0,
			) as maintain_gamescope_focus,
		):
			self.assertEqual(
				run_game_window(
					["game"],
					allow_window_resizing=True,
					gamescope_scaling=True,
				),
				0,
			)

		maintain_scaling.assert_not_called()
		maintain_focus.assert_not_called()
		maintain_gamescope_focus.assert_called_once_with(
			mapper,
			process,
			12,
			window_title="PristonTale EU",
			existing_window_ids=set(),
		)
		prepare.assert_not_called()
		guard.assert_not_called()
		focus.assert_called_once_with(mapper, 12, activate=False)
		process.wait.assert_not_called()
		mapper.close.assert_called_once_with()

	def test_does_not_enable_host_scaling_for_a_borderless_window(self) -> None:
		mapper = mock.Mock()
		mapper.root_window_ids.return_value = set()
		mapper.find_first_window.return_value = (
			12,
			"PristonTale EU V21.75.83",
		)
		process = mock.Mock()
		process.poll.return_value = None
		process.wait.return_value = 0

		with (
			mock.patch("ptlinux.gamebox_runtime._X11", return_value=mapper),
			mock.patch(
				"ptlinux.gamebox_runtime.subprocess.Popen",
				return_value=process,
			),
			mock.patch(
				"ptlinux.gamebox_runtime.time.monotonic",
				return_value=0.0,
			),
			mock.patch("ptlinux.gamebox_runtime.WINDOW_READY_DELAY_SECONDS", 0.0),
			mock.patch("ptlinux.gamebox_runtime._prepare_game_window"),
			mock.patch("ptlinux.gamebox_runtime._focus_game_window"),
			mock.patch(
				"ptlinux.gamebox_runtime._guard_game_window_startup",
				return_value=True,
			) as guard,
			mock.patch(
				"ptlinux.gamebox_runtime._maintain_game_window_scaling"
			) as maintain_scaling,
			mock.patch(
				"ptlinux.gamebox_runtime._maintain_game_window_focus",
				return_value=0,
			) as maintain_focus,
		):
			self.assertEqual(
				run_game_window(["game"], borderless=True),
				0,
			)

		guard.assert_called_once_with(mapper, process, 12, borderless=True)
		maintain_scaling.assert_not_called()
		maintain_focus.assert_called_once_with(
			mapper, process, 12, window_title=WINDOW_TITLE,
			existing_window_ids=set(), expected_pid=mapper.window_pid.return_value,
		)
		mapper.close.assert_called_once_with()

	def test_unavailable_x11_does_not_delay_or_abort_the_game(self) -> None:
		process = mock.Mock()
		process.wait.return_value = 0
		output = io.StringIO()
		with (
			mock.patch(
				"ptlinux.gamebox_runtime._X11",
				side_effect=GameboxRuntimeError("could not open the host X11 display"),
			),
			mock.patch(
				"ptlinux.gamebox_runtime.subprocess.Popen",
				return_value=process,
			) as start_process,
			contextlib.redirect_stderr(output),
		):
			self.assertEqual(run_game_window(["game"]), 0)

		start_process.assert_called_once_with(["game"])
		process.wait.assert_called_once_with()
		self.assertIn("continuing without X11 window styling", output.getvalue())
		self.assertIn("Game window monitoring unavailable; process started:", output.getvalue())
		self.assertNotIn("Game window ready:", output.getvalue())


if __name__ == "__main__":
	unittest.main()