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import hashlib
import sys
import tempfile
import types
import unittest
from pathlib import Path
from unittest.mock import Mock
sys.modules.setdefault(
"decky",
types.SimpleNamespace(DECKY_USER_HOME="/home/deck", logger=Mock()),
)
sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "py_modules"))
from lsfg_vk.configuration import ConfigurationService
from lsfg_vk.flatpak_service import FlatpakService
from lsfg_vk.flatpak_profile_service import FlatpakProfileService
class FakeFlatpakService:
def __init__(self, home: Path):
self.user_home = home
self.config_dir = home / ".config/lsfg-vk"
self.config_file_path = self.config_dir / "conf.toml"
self.backup_dir = self.config_dir / "flatpak-overrides"
self.state = {"version": 2, "plugin_owned_branches": [], "prepared_apps": {}}
self.commands = []
self.running = ""
self.start_times = {}
def _read_state(self):
return self.state
def _write_state(self, state):
self.state = state
def _override_path(self, app_id):
return self.user_home / ".local/share/flatpak/overrides" / app_id
def _backup_path(self, app_id):
return self.backup_dir / f"{app_id}.ini"
@staticmethod
def _sha256(content):
return hashlib.sha256(content).hexdigest()
def _snapshot_override(self, app_id):
path = self._override_path(app_id)
if not path.exists():
return False, b""
return True, path.read_bytes()
def _process_start_time(self, pid):
return self.start_times.get(pid)
@staticmethod
def _write_file(path, content, mode=0o644):
path.parent.mkdir(parents=True, exist_ok=True)
path.write_text(content, encoding="utf-8")
path.chmod(mode)
def prepare_app(self, app_id):
apps = self.state["prepared_apps"]
if app_id not in apps:
existed, original = self._snapshot_override(app_id)
if existed:
self._write_file(self._backup_path(app_id), original.decode("utf-8"))
apps[app_id] = {"override_existed": existed, "managed_sha256": ""}
entry = apps[app_id]
baseline = ""
if entry["override_existed"]:
baseline = self._backup_path(app_id).read_text(encoding="utf-8")
managed = baseline + "\n[Context]\nfilesystems=/config:ro;/dll:ro;\n[Environment]\nLSFGVK_CONFIG=/config/conf.toml\nLSFGVK_FLATPAK=1\n"
self._write_file(self._override_path(app_id), managed)
entry["managed_sha256"] = self._sha256(managed.encode())
return {"success": True, "owned": True, "prepared": True, "runtime": "org.freedesktop.Platform/x86_64/24.08", "runtime_branch": "24.08"}
def remove_app_override(self, app_id):
entry = self.state["prepared_apps"].get(app_id)
if entry is None:
return {"success": True, "prepared": False, "owned": False}
existed, current = self._snapshot_override(app_id)
current_hash = self._sha256(current) if existed else self._sha256(b"")
if current_hash != entry["managed_sha256"]:
return {"success": False, "error": "Flatpak override changed after preparation"}
path = self._override_path(app_id)
backup = self._backup_path(app_id)
if entry["override_existed"]:
self._write_file(path, backup.read_text(encoding="utf-8"))
else:
path.unlink(missing_ok=True)
backup.unlink(missing_ok=True)
self.state["prepared_apps"].pop(app_id)
return {"success": True, "prepared": False, "owned": False}
def get_flatpak_apps(self):
app_id = "org.example.Game"
return {
"success": True,
"apps": [{
"app_id": app_id,
"app_name": "Example Game",
"runtime": "org.freedesktop.Platform/x86_64/24.08",
"runtime_branch": "24.08",
"runtime_ready": True,
"prepared": app_id in self.state["prepared_apps"],
"owned": app_id in self.state["prepared_apps"],
"error": None,
}],
}
def _run_flatpak_command(self, args, **_kwargs):
self.commands.append(args)
if args[:3] == ["override", "--user", "--show"]:
path = self._override_path(args[3])
return types.SimpleNamespace(returncode=0, stdout=path.read_text(encoding="utf-8") if path.exists() else "", stderr="")
if args[0] == "override":
app_id = args[-1]
path = self._override_path(app_id)
content = path.read_text(encoding="utf-8") if path.exists() else ""
env = [item.removeprefix("--env=") for item in args if item.startswith("--env=")]
unset = [item.removeprefix("--unset-env=") for item in args if item.startswith("--unset-env=")]
if unset:
content += "\n[Context]\nunset-environment=" + ";".join(unset) + ";\n"
if env:
content += "\n[Environment]\n" + "\n".join(env) + "\n"
self._write_file(path, content)
return types.SimpleNamespace(returncode=0, stdout="", stderr="")
if args[0] == "ps":
return types.SimpleNamespace(returncode=0, stdout=self.running, stderr="")
raise AssertionError(args)
class FlatpakProfileServiceTests(unittest.TestCase):
def setUp(self):
self.tempdir = tempfile.TemporaryDirectory()
self.home = Path(self.tempdir.name) / "home" / "deck"
self.home.mkdir(parents=True)
self.flatpak = FakeFlatpakService(self.home)
self.runtime = Mock()
self.configuration = ConfigurationService(runtime_service=self.runtime)
self.configuration.user_home = self.home
self.configuration.config_dir = self.flatpak.config_dir
self.configuration.config_file_path = self.flatpak.config_file_path
self.service = FlatpakProfileService(self.flatpak, self.configuration)
self.app_id = "org.example.Game"
def tearDown(self):
self.tempdir.cleanup()
def test_enable_creates_selector_profile_and_default_workarounds(self):
result = self.service.enable_app(self.app_id)
config = self.configuration.get_flatpak_config(self.app_id)
content = self.flatpak._override_path(self.app_id).read_text(encoding="utf-8")
self.assertTrue(result["success"])
self.assertTrue(config["exists"])
self.assertEqual(config["profile"], "flatpak:org.example.Game")
self.assertEqual(config["config"]["active_in"], [])
self.assertIn("LSFGVK_PROFILE=flatpak:org.example.Game", content)
self.assertIn("ENABLE_GAMESCOPE_WSI=0", content)
self.assertIn("DXVK_HDR=0", content)
def test_workaround_update_rebuilds_from_original_override(self):
baseline = "[Environment]\nDXVK_CONFIG=dxgi.syncInterval = 0\nKEEP=yes\n"
self.flatpak._write_file(self.flatpak._override_path(self.app_id), baseline)
self.assertTrue(self.service.enable_app(self.app_id)["success"])
state = self.service.default_state()
state.update({"dxvkFrameRate": 30, "disableHdr": False, "enableZink": True})
result = self.service.set_workaround_state(self.app_id, state)
command = next(
args for args in reversed(self.flatpak.commands)
if args[0] == "override" and any(item.startswith("--env=LSFGVK_PROFILE=") for item in args)
)
self.assertTrue(result["success"])
self.assertIn("--env=DXVK_CONFIG=dxgi.syncInterval = 0; dxvk.maxFrameRate = 30", command)
self.assertNotIn("--env=DXVK_HDR=0", command)
self.assertIn("--env=MESA_LOADER_DRIVER_OVERRIDE=zink", command)
def test_config_update_returns_without_relisting_flatpaks(self):
self.assertTrue(self.service.enable_app(self.app_id)["success"])
self.service.get_app = Mock(side_effect=AssertionError("config updates must not relist Flatpaks"))
result = self.service.update_config(self.app_id, {"multiplier": 4})
self.assertTrue(result["success"])
self.assertEqual(result["app_id"], self.app_id)
self.assertEqual(result["config"]["multiplier"], 4)
self.service.get_app.assert_not_called()
def test_remove_restores_exact_original_override_and_profile(self):
baseline = "[Environment]\nKEEP=yes\n"
self.flatpak._write_file(self.flatpak._override_path(self.app_id), baseline)
self.assertTrue(self.service.enable_app(self.app_id)["success"])
removed = self.service.remove_app(self.app_id)
self.assertTrue(removed["success"])
self.assertEqual(self.flatpak._override_path(self.app_id).read_text(encoding="utf-8"), baseline)
self.assertFalse(self.configuration.get_flatpak_config(self.app_id)["exists"])
def test_external_override_change_fails_closed(self):
self.assertTrue(self.service.enable_app(self.app_id)["success"])
path = self.flatpak._override_path(self.app_id)
path.write_text(path.read_text(encoding="utf-8") + "EXTERNAL=yes\n", encoding="utf-8")
result = self.service.set_workaround_state(self.app_id, self.service.default_state())
self.assertFalse(result["success"])
self.assertIn("changed after preparation", result["error"])
def test_running_detection_uses_owned_selector_state(self):
self.assertTrue(self.service.enable_app(self.app_id)["success"])
self.flatpak.running = "org.example.Game\ttrue\t1234\norg.other.App\ttrue\t9999\n"
self.flatpak.start_times["1234"] = 200
result = self.service.get_running_apps()
self.assertTrue(result["success"])
self.assertEqual(result["apps"], [{"app_id": self.app_id, "active": True, "pid": "1234", "start_time": 200}])
def test_process_start_time_parser_handles_parentheses_in_command_name(self):
fields = ["S"] + ["0"] * 18 + ["4242"]
stat = "1234 (retro)arch) " + " ".join(fields)
self.assertEqual(FlatpakService._parse_process_start_time(stat), 4242)
if __name__ == "__main__":
unittest.main()
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