refactor(core): extract cross-platform proxy runtime from windows app

tests/test_app_runtime.py

@@ -0,0 +1,121 @@
+import json
+import tempfile
+import unittest
+from pathlib import Path
+
+from proxy.app_runtime import DEFAULT_CONFIG, ProxyAppRuntime
+
+
+class _FakeThread:
+    def __init__(self, target=None, args=(), daemon=None, name=None):
+        self.target = target
+        self.args = args
+        self.daemon = daemon
+        self.name = name
+        self.started = False
+        self.join_timeout = None
+        self._alive = False
+
+    def start(self):
+        self.started = True
+        self._alive = True
+
+    def is_alive(self):
+        return self._alive
+
+    def join(self, timeout=None):
+        self.join_timeout = timeout
+        self._alive = False
+
+
+class ProxyAppRuntimeTests(unittest.TestCase):
+    def test_load_config_returns_defaults_when_missing(self):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            runtime = ProxyAppRuntime(Path(tmpdir))
+
+            cfg = runtime.load_config()
+
+            self.assertEqual(cfg, DEFAULT_CONFIG)
+
+    def test_load_config_merges_defaults_into_saved_config(self):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            app_dir = Path(tmpdir)
+            config_path = app_dir / "config.json"
+            app_dir.mkdir(parents=True, exist_ok=True)
+            config_path.write_text(
+                json.dumps({"port": 9050, "host": "127.0.0.2"}),
+                encoding="utf-8")
+            runtime = ProxyAppRuntime(app_dir)
+
+            cfg = runtime.load_config()
+
+            self.assertEqual(cfg["port"], 9050)
+            self.assertEqual(cfg["host"], "127.0.0.2")
+            self.assertEqual(cfg["dc_ip"], DEFAULT_CONFIG["dc_ip"])
+            self.assertEqual(cfg["verbose"], DEFAULT_CONFIG["verbose"])
+
+    def test_invalid_config_file_falls_back_to_defaults(self):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            app_dir = Path(tmpdir)
+            app_dir.mkdir(parents=True, exist_ok=True)
+            (app_dir / "config.json").write_text("{broken", encoding="utf-8")
+            runtime = ProxyAppRuntime(app_dir)
+
+            cfg = runtime.load_config()
+
+            self.assertEqual(cfg, DEFAULT_CONFIG)
+
+    def test_start_proxy_starts_thread_with_parsed_dc_options(self):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            captured = {}
+            thread_holder = {}
+
+            def fake_parse(entries):
+                captured["dc_ip"] = list(entries)
+                return {2: "149.154.167.220"}
+
+            def fake_thread_factory(**kwargs):
+                thread = _FakeThread(**kwargs)
+                thread_holder["thread"] = thread
+                return thread
+
+            runtime = ProxyAppRuntime(
+                Path(tmpdir),
+                parse_dc_ip_list=fake_parse,
+                thread_factory=fake_thread_factory)
+
+            started = runtime.start_proxy(dict(DEFAULT_CONFIG))
+
+            self.assertTrue(started)
+            self.assertEqual(captured["dc_ip"], DEFAULT_CONFIG["dc_ip"])
+            self.assertTrue(thread_holder["thread"].started)
+            self.assertEqual(
+                thread_holder["thread"].args,
+                (DEFAULT_CONFIG["port"], {2: "149.154.167.220"},
+                 DEFAULT_CONFIG["host"]))
+
+    def test_start_proxy_reports_bad_config(self):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            errors = []
+
+            def fake_parse(entries):
+                raise ValueError("bad dc mapping")
+
+            runtime = ProxyAppRuntime(
+                Path(tmpdir),
+                parse_dc_ip_list=fake_parse,
+                on_error=errors.append)
+
+            started = runtime.start_proxy({
+                "host": "127.0.0.1",
+                "port": 1080,
+                "dc_ip": ["broken"],
+                "verbose": False,
+            })
+
+            self.assertFalse(started)
+            self.assertEqual(errors, ["Ошибка конфигурации:\nbad dc mapping"])
+
+
+if __name__ == "__main__":
+    unittest.main()