test: add frontend test suite

src/resourceTypeLabels.test.ts

@@ -0,0 +1,33 @@
+import { describe, expect, it } from "vitest";
+import {
+  resourceLanguageLabel,
+  resourceTypeDisplay,
+  resourceTypeLabel,
+  typeFilterLabel,
+} from "./resourceTypeLabels";
+
+const t = (key: string) =>
+  ({
+    filterAll: "全部",
+    type_image: "圖片",
+    type_video: "影片",
+    lang_zh_TW: "繁中",
+    lang_zh_CN: "簡中",
+    lang_en: "英文",
+  })[key] ?? key;
+
+describe("resource labels", () => {
+  it("localizes known resource types and falls back to raw type", () => {
+    expect(typeFilterLabel(t, "all")).toBe("全部");
+    expect(resourceTypeLabel(t, "image")).toBe("圖片");
+    expect(resourceTypeDisplay(t, "video")).toBe("影片");
+    expect(resourceTypeLabel(t, "unknown")).toBe("unknown");
+  });
+
+  it("normalizes resource language codes", () => {
+    expect(resourceLanguageLabel(t, "zh-TW")).toBe("繁中");
+    expect(resourceLanguageLabel(t, "zh-hans")).toBe("簡中");
+    expect(resourceLanguageLabel(t, "EN")).toBe("英文");
+    expect(resourceLanguageLabel(t, "ja")).toBe("ja");
+  });
+});