feat(ui): helper de thème dark/light persisté (TDD)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-05 05:26:00 +02:00
parent d3bf4a9fd2
commit b9699bfb8f
3 changed files with 51 additions and 1 deletions
@@ -0,0 +1,25 @@
+import { describe, it, expect, beforeEach } from "vitest";
+import { nextTheme, getInitialTheme } from "./theme.js";
+
+describe("nextTheme", () => {
+  it("bascule dark <-> light", () => {
+    expect(nextTheme("dark")).toBe("light");
+    expect(nextTheme("light")).toBe("dark");
+  });
+});
+
+describe("getInitialTheme", () => {
+  beforeEach(() => {
+    // @ts-expect-error - environnement node sans localStorage
+    delete globalThis.localStorage;
+  });
+  it("retombe sur dark sans localStorage", () => {
+    expect(getInitialTheme()).toBe("dark");
+  });
+  it("lit la valeur persistée si présente", () => {
+    const store: Record<string, string> = { "su-theme": "light" };
+    // @ts-expect-error - stub minimal
+    globalThis.localStorage = { getItem: (k: string) => store[k] ?? null };
+    expect(getInitialTheme()).toBe("light");
+  });
+});