feat: 完善数据库备份管理与版本读取 (#6450)

tests/test_system_version.py

@@ -0,0 +1,42 @@
+from pathlib import Path
+
+from app.chain.system import SystemChain
+from app.runtime import version as runtime_version
+
+
+def test_installed_frontend_version_prefers_deployed_resource(
+    tmp_path: Path,
+    monkeypatch,
+) -> None:
+    frontend_path = tmp_path / "public"
+    frontend_path.mkdir()
+    (frontend_path / "version.txt").write_text("v3.2.1\n", encoding="utf-8")
+    monkeypatch.setattr(runtime_version, "is_frozen", lambda: False)
+    monkeypatch.setattr(runtime_version, "is_windows", lambda: False)
+    monkeypatch.setattr(
+        runtime_version,
+        "get_runtime_setting",
+        lambda key: frontend_path if key == "FRONTEND_PATH" else tmp_path / "config",
+    )
+
+    assert runtime_version.get_frontend_version() == "v3.2.1"
+    assert SystemChain.get_frontend_version() == "v3.2.1"
+
+
+def test_installed_frontend_version_falls_back_to_release_declaration(
+    tmp_path: Path,
+    monkeypatch,
+) -> None:
+    monkeypatch.setattr(runtime_version, "is_frozen", lambda: False)
+    monkeypatch.setattr(runtime_version, "is_windows", lambda: False)
+    monkeypatch.setattr(runtime_version, "_FRONTEND_VERSION", "v3.0.0")
+    monkeypatch.setattr(
+        runtime_version,
+        "get_runtime_setting",
+        lambda key: tmp_path / key.lower(),
+    )
+
+    assert runtime_version.get_frontend_version() == "v3.0.0"
+    assert (
+        runtime_version.get_frontend_version(fallback_to_declared=False) is None
+    )