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import logging
import sys
import tempfile
import types
import unittest
from pathlib import Path
from unittest import mock
PROJECT_ROOT = Path(__file__).resolve().parents[1]
sys.path.insert(0, str(PROJECT_ROOT / "py_modules"))
sys.modules.setdefault("decky", types.SimpleNamespace(logger=logging.getLogger("decky-test")))
from lsfg_vk.base_service import BaseService
from lsfg_vk.config_schema import ConfigurationManager
from lsfg_vk.configuration import ConfigurationService
LEGACY_CONFIG = '''\
version = 1
[global]
current_profile = "decky-lsfg-vk"
dll = "/games/Lossless Scaling/Lossless.dll"
no_fp16 = true
[[game]]
exe = "decky-lsfg-vk"
multiplier = 1
flow_scale = 0.9
performance_mode = true
hdr_mode = true
experimental_present_mode = "mailbox"
'''
class ConfigurationMigrationTests(unittest.TestCase):
def test_v1_configuration_is_converted_to_valid_v2_toml(self):
migrated = ConfigurationManager.parse_toml_content_multi_profile(LEGACY_CONFIG)
serialized = ConfigurationManager.generate_toml_content_multi_profile(migrated)
self.assertIn("version = 2", serialized)
self.assertIn("allow_fp16 = false", serialized)
self.assertIn("[[profile]]", serialized)
self.assertIn('name = "decky-lsfg-vk"', serialized)
self.assertIn("multiplier = 2", serialized)
self.assertNotIn("[[game]]", serialized)
self.assertNotIn("no_fp16", serialized)
self.assertNotIn("hdr_mode", serialized)
self.assertNotIn("experimental_present_mode", serialized)
def test_v2_normalization_is_idempotent(self):
migrated = ConfigurationManager.parse_toml_content_multi_profile(LEGACY_CONFIG)
first_write = ConfigurationManager.generate_toml_content_multi_profile(migrated)
second_write = ConfigurationManager.generate_toml_content_multi_profile(
ConfigurationManager.parse_toml_content_multi_profile(first_write)
)
self.assertEqual(second_write, first_write)
def test_launch_script_uses_v2_profile_override(self):
service = ConfigurationService.__new__(ConfigurationService)
service.local_share_dir = Path("/home/deck/.local/share/vulkan/implicit_layer.d")
service.config_file_path = Path("/home/deck/.config/lsfg-vk/conf.toml")
profile_data = {
"current_profile": "decky-lsfg-vk",
"profiles": {"decky-lsfg-vk": ConfigurationManager.get_defaults()},
"global_config": {"dll": "/games/Lossless Scaling/Lossless.dll", "allow_fp16": True},
}
script = service._generate_script_content_for_profile(profile_data)
self.assertIn("LSFGVK_CONFIG=/home/deck/.config/lsfg-vk/conf.toml", script)
self.assertIn("LSFGVK_PROFILE=decky-lsfg-vk", script)
self.assertNotIn("LSFG_PROCESS", script)
def test_active_in_uses_native_v2_tracking_instead_of_forcing_a_profile(self):
config = ConfigurationManager.get_defaults()
config["active_in"] = "Game.exe, GameThread"
self.assertEqual(
ConfigurationService._profile_selection_lines("decky-lsfg-vk", config),
["# active_in is configured; lsfg-vk will select a matching profile automatically."],
)
class InstallerInfrastructureTests(unittest.TestCase):
def test_layer_archive_selection_has_no_legacy_arm_override(self):
from lsfg_vk.constants import (
LAYER_ARCHIVE_AARCH64,
LAYER_ARCHIVE_X86_64,
get_layer_archive_filename,
)
self.assertEqual(get_layer_archive_filename(False), LAYER_ARCHIVE_X86_64)
self.assertEqual(get_layer_archive_filename(True), LAYER_ARCHIVE_AARCH64)
self.assertNotEqual(LAYER_ARCHIVE_AARCH64, LAYER_ARCHIVE_X86_64)
def test_install_migrates_v1_config_once_and_preserves_script_workarounds(self):
from lsfg_vk.installation import InstallationService
with tempfile.TemporaryDirectory() as directory:
home = Path(directory)
config_dir = home / ".config" / "lsfg-vk"
config_dir.mkdir(parents=True)
config_path = config_dir / "conf.toml"
config_path.write_text(LEGACY_CONFIG, encoding="utf-8")
script_path = home / "lsfg"
script_path.write_text("#!/bin/bash\nexport DXVK_FRAME_RATE=45\nexec \"$@\"\n", encoding="utf-8")
service = InstallationService.__new__(InstallationService)
service.log = mock.Mock()
service.user_home = home
service.config_dir = config_dir
service.config_file_path = config_path
service.lsfg_script_path = script_path
service.lsfg_launch_script_path = script_path
with mock.patch("lsfg_vk.dll_detection.DllDetectionService") as detection_service:
detection_service.return_value.check_lossless_scaling_dll.return_value = {"detected": False}
profile_data = service._create_config_file()
self.assertEqual(
(config_dir / "conf.toml.v1.bak").read_text(encoding="utf-8"),
LEGACY_CONFIG,
)
migrated = config_path.read_text(encoding="utf-8")
self.assertIn("version = 2", migrated)
self.assertIn("allow_fp16 = false", migrated)
self.assertEqual(profile_data["profiles"]["decky-lsfg-vk"]["dxvk_frame_rate"], 45)
service._create_lsfg_launch_script(profile_data)
launch_script = script_path.read_text(encoding="utf-8")
self.assertIn("export DXVK_FRAME_RATE=45", launch_script)
self.assertIn("export DISABLE_LSFGVK=1", launch_script)
with mock.patch("lsfg_vk.dll_detection.DllDetectionService") as detection_service:
detection_service.return_value.check_lossless_scaling_dll.return_value = {"detected": False}
service._create_config_file()
self.assertEqual(len(list(config_dir.glob("conf.toml.v1.bak*"))), 1)
def test_writes_replace_the_config_atomically(self):
service = BaseService.__new__(BaseService)
service.log = mock.Mock()
with tempfile.TemporaryDirectory() as directory:
target = Path(directory) / "conf.toml"
target.write_text("old config", encoding="utf-8")
with mock.patch("lsfg_vk.base_service.os.replace", wraps=__import__("os").replace) as replace:
service._write_file(target, "version = 2\n", 0o644)
self.assertEqual(target.read_text(encoding="utf-8"), "version = 2\n")
replace.assert_called_once()
if __name__ == "__main__":
unittest.main()
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