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fix: replace network-dependent image tests with local HTTP server
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Use Bun.serve to create a local test server instead of hitting
external URLs. Fixes flaky test in CI environments without
network access.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Jean-Luc Makiola
2026-04-03 14:07:16 +02:00
parent 9191f0fe24
commit be168c8329
1 changed files with 48 additions and 4 deletions
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52
tests/services/image.service.test.ts
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@@ -1,9 +1,48 @@
import { afterEach, describe, expect, it } from "bun:test";
import { afterAll, afterEach, beforeAll, describe, expect, it } from "bun:test";
import { existsSync, rmSync } from "node:fs";
import type { Server } from "bun";
import { fetchImageFromUrl } from "../../src/server/services/image.service.ts";
const TEST_UPLOADS_DIR = "test-uploads";
// 1x1 transparent PNG (smallest valid PNG)
const TINY_PNG = new Uint8Array([
0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d, 0x49,
0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x08, 0x06,
0x00, 0x00, 0x00, 0x1f, 0x15, 0xc4, 0x89, 0x00, 0x00, 0x00, 0x0a, 0x49, 0x44,
0x41, 0x54, 0x78, 0x9c, 0x62, 0x00, 0x00, 0x00, 0x02, 0x00, 0x01, 0xe2, 0x21,
0xbc, 0x33, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4e, 0x44, 0xae, 0x42, 0x60,
0x82,
]);
let server: Server;
let baseUrl: string;
beforeAll(() => {
server = Bun.serve({
port: 0,
fetch(req) {
const url = new URL(req.url);
if (url.pathname === "/image.png") {
return new Response(TINY_PNG, {
headers: { "Content-Type": "image/png" },
});
}
if (url.pathname === "/page.html") {
return new Response("<html></html>", {
headers: { "Content-Type": "text/html" },
});
}
return new Response("Not found", { status: 404 });
},
});
baseUrl = `http://localhost:${server.port}`;
});
afterAll(() => {
server.stop(true);
});
describe("Image Service", () => {
afterEach(() => {
if (existsSync(TEST_UPLOADS_DIR)) {
@@ -13,8 +52,7 @@ describe("Image Service", () => {
describe("fetchImageFromUrl", () => {
it("fetches a valid image URL and saves to disk", async () => {
const imageUrl =
"https://www.google.com/images/branding/googlelogo/1x/googlelogo_color_272x92dp.png";
const imageUrl = `${baseUrl}/image.png`;
const result = await fetchImageFromUrl(imageUrl, TEST_UPLOADS_DIR);
expect(result.filename).toMatch(/^\d+-[\w-]+\.png$/);
@@ -26,7 +64,7 @@ describe("Image Service", () => {
it("rejects non-image content type", async () => {
await expect(
fetchImageFromUrl("https://example.com/", TEST_UPLOADS_DIR),
fetchImageFromUrl(`${baseUrl}/page.html`, TEST_UPLOADS_DIR),
).rejects.toThrow("Invalid content type");
});
@@ -41,5 +79,11 @@ describe("Image Service", () => {
fetchImageFromUrl("ftp://example.com/image.png", TEST_UPLOADS_DIR),
).rejects.toThrow("URL must use HTTP or HTTPS");
});
it("rejects 404 responses", async () => {
await expect(
fetchImageFromUrl(`${baseUrl}/missing.jpg`, TEST_UPLOADS_DIR),
).rejects.toThrow("HTTP 404");
});
});
});