type FetchModule = typeof import("./fetch.js");

type ReadRemoteMediaBuffer = FetchModule["readRemoteMediaBuffer"];

type SaveRemoteMedia = FetchModule["saveRemoteMedia"];

type SaveResponseMedia = FetchModule["saveResponseMedia"];

type LookupFn = NonNullable<Parameters<ReadRemoteMediaBuffer>[0]["lookupFn"]>;

let readRemoteMediaBuffer: ReadRemoteMediaBuffer;

let saveRemoteMedia: SaveRemoteMedia;

let saveResponseMedia: SaveResponseMedia;

let defaultFetchMediaMaxBytes: number;

let tempHome: TempHomeEnv;

const fetchModule = await import("./fetch.js");

readRemoteMediaBuffer = fetchModule.readRemoteMediaBuffer;

saveRemoteMedia = fetchModule.saveRemoteMedia;

saveResponseMedia = fetchModule.saveResponseMedia;

defaultFetchMediaMaxBytes = fetchModule.DEFAULT_FETCH_MEDIA_MAX_BYTES;

});

await expect(fs.readFile(saved.path)).resolves.toStrictEqual(Buffer.from([1, 2, 3, 4]));

});

it("saves bodyless successful responses without unbounded buffering", async () => {

const saved = await saveResponseMedia(new Response(null, { status: 204 }), {

sourceUrl: "https://example.com/empty",

fallbackContentType: "application/octet-stream",

maxBytes: 8,

});

expect(saved.size).toBe(0);

await expect(fs.readFile(saved.path)).resolves.toStrictEqual(Buffer.alloc(0));

});

it("uses caller filename hints for MIME detection without preserving storage basenames", async () => {

const contentType = "application/vnd.openxmlformats-officedocument.wordprocessingml.document";

const fetchImpl = vi.fn(