mirror of
https://github.com/MadsLorentzen/ai-job-search.git
synced 2026-09-17 16:46:24 +00:00
90 lines
3.0 KiB
TypeScript
90 lines
3.0 KiB
TypeScript
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import { afterEach, describe, expect, test } from "bun:test";
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import { apiFetch, htmlFetch } from "../src/helpers";
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// The portal contract requires backoff on 429/5xx. These tests pin the retry
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// loop offline: a stubbed fetch counts attempts, and a stubbed setTimeout
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// fires immediately so the exhaustion case does not sleep through the real
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// 500ms -> 5s backoff schedule. apiFetch and htmlFetch carry separate copies
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// of the loop, so both are exercised to keep them from drifting apart.
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const originalFetch = globalThis.fetch;
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const originalSetTimeout = globalThis.setTimeout;
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afterEach(() => {
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globalThis.fetch = originalFetch;
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globalThis.setTimeout = originalSetTimeout;
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});
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function instantTimers() {
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globalThis.setTimeout = ((fn: () => void) =>
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originalSetTimeout(fn, 0)) as unknown as typeof setTimeout;
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}
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function stubFetch(responses: Array<() => Response>): { calls: number } {
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const state = { calls: 0 };
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globalThis.fetch = (async () => {
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const i = Math.min(state.calls, responses.length - 1);
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state.calls++;
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return responses[i]();
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}) as unknown as typeof fetch;
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return state;
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}
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describe("htmlFetch retry/backoff", () => {
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test("retries a 429 and succeeds on the next attempt", async () => {
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instantTimers();
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const state = stubFetch([
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() => new Response("", { status: 429 }),
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() => new Response("<html>ok</html>", { status: 200 }),
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]);
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const html = await htmlFetch("https://www.jobindex.dk/x");
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expect(html).toContain("ok");
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expect(state.calls).toBe(2);
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});
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test("does not retry a plain 4xx", async () => {
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const state = stubFetch([() => new Response("", { status: 400 })]);
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await expect(htmlFetch("https://www.jobindex.dk/x")).rejects.toThrow(/400/);
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expect(state.calls).toBe(1);
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});
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test("gives up after the initial attempt plus six retries on persistent 5xx", async () => {
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instantTimers();
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const state = stubFetch([() => new Response("", { status: 500 })]);
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await expect(htmlFetch("https://www.jobindex.dk/x")).rejects.toThrow(/500/);
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expect(state.calls).toBe(7);
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});
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});
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describe("apiFetch retry/backoff", () => {
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test("retries a 429 and succeeds on the next attempt", async () => {
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instantTimers();
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const state = stubFetch([
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() => new Response("", { status: 429 }),
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() => new Response('{"ok":true}', { status: 200 }),
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]);
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const data = await apiFetch<{ ok: boolean }>("/x");
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expect(data.ok).toBe(true);
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expect(state.calls).toBe(2);
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});
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test("does not retry a plain 4xx", async () => {
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const state = stubFetch([() => new Response("", { status: 400 })]);
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await expect(apiFetch("/x")).rejects.toThrow(/400/);
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expect(state.calls).toBe(1);
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});
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test("gives up after the initial attempt plus six retries on persistent 5xx", async () => {
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instantTimers();
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const state = stubFetch([() => new Response("", { status: 500 })]);
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await expect(apiFetch("/x")).rejects.toThrow(/500/);
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expect(state.calls).toBe(7);
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});
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});
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