feat(W4): 站点path全链路-portalUrlOf/previewPortalUrl纯函数,站点列/向导地址预览/预览frame sitePath,store携带path,mock嵌套路由,T-W4-16..18 绿51/51

src/utils/sitePath.spec.ts

@@ -0,0 +1,29 @@
+/**
+ * W4 嵌套路径：站点门户 URL 拼接纯函数（方案 §8.3 T-W4-16）。
+ * portalUrlOf：站点对象 → 门户地址（path 优先，尾斜杠；path 缺失回退 code 兼容历史数据）；
+ * previewPortalUrl：上级 path + 编码 → 子站门户地址（parentPath 空 → 单段）。
+ */
+import { describe, expect, it } from "vitest";
+import { portalUrlOf, previewPortalUrl } from "@/utils/sitePath";
+
+describe("portalUrlOf（T-W4-16）", () => {
+    it("path 优先：嵌套 path 拼单段门户地址 + 尾斜杠", () => {
+        expect(portalUrlOf({ path: "sch-3/jdxy", code: "jdxy" })).toBe("/portal/sch-3/jdxy/");
+    });
+
+    it("path 缺失回退 code（历史数据兼容）", () => {
+        expect(portalUrlOf({ code: "demo" })).toBe("/portal/demo/");
+        expect(portalUrlOf({ path: "", code: "demo" })).toBe("/portal/demo/");
+    });
+});
+
+describe("previewPortalUrl（T-W4-16）", () => {
+    it("上级 path 非空 → 两段嵌套 + 尾斜杠", () => {
+        expect(previewPortalUrl("sch-3", "jdxy")).toBe("/portal/sch-3/jdxy/");
+    });
+
+    it("上级 path 空 → 单段（顶层站）", () => {
+        expect(previewPortalUrl("", "sch-9")).toBe("/portal/sch-9/");
+        expect(previewPortalUrl(undefined, "sch-9")).toBe("/portal/sch-9/");
+    });
+});