test: share msteams safe fetch assertions

extensions/msteams/src/attachments/shared.test.ts

@@ -31,6 +31,23 @@ function mockFetchWithRedirect(redirectMap: Record<string, string>, finalBody =
   });
 }
 
+async function expectSafeFetchStatus(params: {
+  fetchMock: ReturnType<typeof vi.fn>;
+  url: string;
+  allowHosts: string[];
+  expectedStatus: number;
+  resolveFn?: typeof publicResolve;
+}) {
+  const res = await safeFetch({
+    url: params.url,
+    allowHosts: params.allowHosts,
+    fetchFn: params.fetchMock as unknown as typeof fetch,
+    resolveFn: params.resolveFn ?? publicResolve,
+  });
+  expect(res.status).toBe(params.expectedStatus);
+  return res;
+}
+
 describe("msteams attachment allowlists", () => {
   it("normalizes wildcard host lists", () => {
     expect(resolveAllowedHosts(["*", "graph.microsoft.com"])).toEqual(["*"]);
@@ -121,13 +138,12 @@ describe("safeFetch", () => {
     const fetchMock = vi.fn(async (_url: string, _init?: RequestInit) => {
       return new Response("ok", { status: 200 });
     });
-    const res = await safeFetch({
+    await expectSafeFetchStatus({
+      fetchMock,
       url: "https://teams.sharepoint.com/file.pdf",
       allowHosts: ["sharepoint.com"],
-      fetchFn: fetchMock as unknown as typeof fetch,
-      resolveFn: publicResolve,
+      expectedStatus: 200,
     });
-    expect(res.status).toBe(200);
     expect(fetchMock).toHaveBeenCalledOnce();
     // Should have used redirect: "manual"
     expect(fetchMock.mock.calls[0][1]).toHaveProperty("redirect", "manual");
@@ -137,13 +153,12 @@ describe("safeFetch", () => {
     const fetchMock = mockFetchWithRedirect({
       "https://teams.sharepoint.com/file.pdf": "https://cdn.sharepoint.com/storage/file.pdf",
     });
-    const res = await safeFetch({
+    await expectSafeFetchStatus({
+      fetchMock,
       url: "https://teams.sharepoint.com/file.pdf",
       allowHosts: ["sharepoint.com"],
-      fetchFn: fetchMock as unknown as typeof fetch,
-      resolveFn: publicResolve,
+      expectedStatus: 200,
     });
-    expect(res.status).toBe(200);
     expect(fetchMock).toHaveBeenCalledTimes(2);
   });