implement phase 4

addin/src/test/httpMock.ts

@@ -0,0 +1,46 @@
+/**
+ * Mock response แบบ duck-typing แทน `Response` จริง (jsdom ไม่มี Response/fetch global)
+ * service ที่ถูก test ใช้แค่ ok / status / json() / text() / blob()
+ */
+
+export interface MockHttpResponse {
+  ok: boolean;
+  status: number;
+  json: () => Promise<unknown>;
+  text: () => Promise<string>;
+  blob?: () => Promise<Blob>;
+}
+
+export function mockResponse(
+  options: { status?: number; body?: unknown; text?: string; blob?: Blob } = {}
+): MockHttpResponse {
+  const status = options.status ?? 200;
+  const text = options.text ?? (options.body !== undefined ? JSON.stringify(options.body) : "");
+  return {
+    ok: status >= 200 && status < 300,
+    status,
+    json: async () => JSON.parse(text),
+    text: async () => text,
+    ...(options.blob !== undefined ? { blob: async () => options.blob as Blob } : {}),
+  };
+}
+
+/** แทน globalThis.fetch ด้วย mock — คืนตัวจับ call กลับไปให้ assert */
+export function installFetchMock(
+  implementation?: (...args: unknown[]) => Promise<MockHttpResponse>
+): jest.Mock {
+  const fetchMock = jest.fn(
+    implementation ?? (async () => mockResponse({ status: 200, body: {} }))
+  );
+  (globalThis as unknown as Record<string, unknown>).fetch = fetchMock;
+  return fetchMock;
+}
+
+/** JWT ปลอมเพื่อ seed session — service อ่านแค่ claim `exp` */
+export function makeFakeJwt(expiresAtMs: number, subject = "user-1"): string {
+  const encode = (value: string): string =>
+    btoa(value).replace(/\+/g, "-").replace(/\//g, "_").replace(/=+$/, "");
+  const header = encode(JSON.stringify({ alg: "RS256", typ: "JWT" }));
+  const payload = encode(JSON.stringify({ sub: subject, exp: Math.floor(expiresAtMs / 1000) }));
+  return `${header}.${payload}.${encode("fake-signature")}`;
+}