Files
DroidDeck/tools/tests/test_session_run_status.py
MaxsTechReview 2fe4d5303c feat: Epic Games Launcher for Linux (#928)
* feat: Epic Games Launcher for Linux

Install Epic's official Linux launcher (EGLv2) from Epic's CDN with Valve's
Steam Runtime 4 and run it under FEX, signed in with the linked Epic account.
Epic games launch through a hidden launcher instance so they get the
launcher's own arguments, with the exchange-code launch as the fallback, and
DroidDeck installs show up in the launcher as installed.

In the launcher, touch scrolls like a phone app and the gamepad drives the UI:
D-pad and left stick move the selection, A opens, B goes back, the right stick
and triggers scroll proportionally, X opens the options menu, Y the keyboard
and LB/RB switch tabs.

* feat: Epic Games Launcher for Linux

Install Epic's official Linux launcher (EGLv2) from Epic's CDN with Valve's
Steam Runtime 4 and run it under FEX, signed in with the linked Epic account.
Epic games launch through a hidden launcher instance so they get the
launcher's own arguments, with the exchange-code launch as the fallback, and
DroidDeck installs show up in the launcher as installed.

In the launcher, touch scrolls like a phone app and the gamepad drives the UI:
D-pad and left stick move the selection, A opens, B goes back, the right stick
and triggers scroll proportionally, X opens the options menu, Y the keyboard
and LB/RB switch tabs.

* Route Epic games through Steam, import launcher installs, offer the second library

- Every Epic launch goes Steam -> Epic Games Launcher -> game; Play inside the open launcher hands the game to Steam
- Games installed from inside the launcher get a Games-tab entry and launch through Steam; the launcher installs to the last Stores target
- Stores install picker offers the Steam second library, with side-by-side choices
- uruntime xattr-only failures no longer fail the launcher unpack (app-extract)

* Hand launcher Play and Steam links to Steam, wait for FEX on first run

Play on a game the launcher just installed is matched to its install
record and handed to Steam. Steam games listed in the launcher open
steam://rungameid links, which now start the game in a Steam session.
Opening the launcher before Steam has downloaded FEX asks Steam for it
and starts Steam instead of failing with no-fex.

* Address review: FEX check, play-in-Steam action, touch route thread, scroll scale

fexReady needs a FEX binary in Steam's FEX tool, not just its folder.
The play-in-Steam action stays until the link is handled, so Run Steam
at startup can't start a session first. The pad touch route reads the
mouse mode without side effects off the main thread and posts the pad
update there. Vertical scroll uses the output height. A status-2 unpack
counts only when AppRun is there. The xdg-open command is tested
end to end for Steam links.

* Open the launcher through Steam, recover dropped shortcuts, sign out of both

The Epic Games Launcher now runs as its own Steam shortcut, so opening
it starts Steam, which opens the launcher, and Play inside it goes to
the running Steam.

Steam dropped a running shortcut from its library when the game exited
after a sleep/wake replay or a server re-logon, and launching it then
waited forever at ShowInterstitials. login1 only replays sleep/wake
when Steam is asleep. The session restarts Steam when a requested
shortcut is missing, and when a game exits with its shortcut gone and
nothing else runs.

Resuming after a long pause no longer reports failure while traced
processes are still waking, so "Steam is paused" goes away on the first
tap.

Signing out of the launcher signs DroidDeck's Epic store out, and
signing out in DroidDeck restarts the launcher signed out and clears
the Epic web cookies.

* Address review: one session-switch poll, Epic setup can't block a session

A new switch confirmation replaces the pending poll instead of adding a
second one that could start the session again. Epic library sync and
install-folder setup at session start are each guarded, so a bad
preference no longer stops the guest from launching.

* Uninstall the Epic Games Launcher from the Games tab

An Uninstall button next to Launch asks first, closes a running
session, and removes the launcher and its runtime. The launcher's
sign-in and install records stay, so its games keep their Games-tab
entries and a reinstall comes back signed in. Its Steam shortcut goes
away on the next Steam start.

* Address review: uninstall only after the session has ended

The launcher's files are removed only once the session is not running
and its phase has ended; a shutdown still in progress after the wait
reports failure instead. The confirmation reads the session state from
the front-end state.

* Find FEX that Steam installed on the second library

Steam's tools on a second library live in DroidDeck's private copy,
which the session binds over the library. The launcher's FEX check
only looked on the shared storage, so with FEX there it always asked
Steam for FEX and only Steam opened. It now checks the private copy
too.

* Start games without Steam, per-game Settings menu with Wine sync

"Start without Steam" now really leaves the Steam client out: the game
runs in its own Proton/FEX through droiddeck-proton-run in a run
session, and the Epic Games Launcher opens on its own with its games
playing in it. Run sessions for these games are not pinned to the big
cores and get DirectAudio and the added-games list like Steam.

The Games tab card is now "Settings", titled "<game> Settings": Start
without Steam, FEX preset, Wine sync (ntsync, fsync, esync, wineserver
or the app default) and Default, which puts everything changed for the
game back to the app's settings. The app-wide Wine sync choice is shown
in the Steam settings Session tab.

* Address review: uninstall guard, routed games, shortcut matching

Opening or reinstalling the Epic Games Launcher waits while it is being
uninstalled. Added games that are Steam installs keep their Start
without Steam setting under their Steam app id and start as that Steam
game. Live shortcut lookups wait for Steam's library to load and match
a same-name shortcut by its executable, so no duplicate is added. The
session treats the open launcher as itself even when it could not tell
its Steam app id.

* Address review: drop a queued launcher switch when it is uninstalled

A confirmed switch to the Epic Games Launcher that is still waiting for
the old session to end is cancelled when the launcher is uninstalled,
and never starts while the uninstall runs. The launcher id test sets
its environment for its own runs only.
2026-10-17 14:40:39 -04:00

75 lines
3.0 KiB
Python

import os
import re
import shutil
import signal
import subprocess
import tempfile
import time
import unittest
from pathlib import Path
SESSION = Path(__file__).resolve().parents[1] / "linuxfs/overlay/usr/local/bin/droiddeck-session"
def run_program_function():
match = re.search(r"^ run_program\(\) \{\n.*?^ \}\n", SESSION.read_text(), re.M | re.S)
return match.group(0)
class RunStatusTest(unittest.TestCase):
def setUp(self):
self.dir = Path(tempfile.mkdtemp())
self.addCleanup(shutil.rmtree, self.dir, True)
def run_with(self, command, launch_dir=True):
env = dict(os.environ)
env.pop("BL_LAUNCH_DIR", None)
if launch_dir:
env["BL_LAUNCH_DIR"] = str(self.dir)
return subprocess.run(["bash", "-c", run_program_function() + "run_program " + command + "; echo unreachable"],
env=env, capture_output=True, text=True, timeout=30)
def test_the_program_status_is_kept_for_the_app(self):
run = self.run_with("sh -c 'exit 7'")
self.assertEqual(7, run.returncode)
self.assertNotIn("unreachable", run.stdout)
self.assertEqual("7\n", (self.dir / "run-status").read_text())
self.assertFalse((self.dir / "run-status.tmp").exists())
def test_a_clean_exit_is_recorded_as_zero(self):
self.assertEqual(0, self.run_with("true").returncode)
self.assertEqual("0\n", (self.dir / "run-status").read_text())
def test_nothing_is_written_without_a_launch_dir(self):
self.assertEqual(3, self.run_with("sh -c 'exit 3'", launch_dir=False).returncode)
self.assertEqual([], os.listdir(self.dir))
def signalled(self, sig, program):
env = dict(os.environ, BL_LAUNCH_DIR=str(self.dir))
ready = self.dir / "ready"
proc = subprocess.Popen(["bash", "-c", run_program_function() + "run_program " + program],
env=env, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
self.addCleanup(proc.kill)
deadline = time.monotonic() + 10
while not ready.exists() and time.monotonic() < deadline:
time.sleep(0.05)
self.assertTrue(ready.exists())
proc.send_signal(sig)
return proc.wait(timeout=10)
def test_a_stop_signal_reaches_the_program(self):
program = ("python3 -c 'import signal, sys, time; signal.signal(signal.SIGTERM, lambda *a: sys.exit(9)); "
"open(sys.argv[1], \"w\").close(); time.sleep(30)' %s" % (self.dir / "ready"))
self.assertEqual(9, self.signalled(signal.SIGTERM, program))
self.assertEqual("9\n", (self.dir / "run-status").read_text())
def test_an_interrupt_reaches_the_program(self):
program = ("python3 -c 'import sys, time; open(sys.argv[1], \"w\").close(); time.sleep(30)' %s"
% (self.dir / "ready"))
self.assertEqual(130, self.signalled(signal.SIGINT, program))
self.assertEqual("130\n", (self.dir / "run-status").read_text())
if __name__ == "__main__":
unittest.main()