Support Vitest 3 (#7923)

* Support Vitest 3

* no hangin timeout

* more changes

* faster tests?

* turbo

* update lockfile

* fix lockfile

* fix

* lint & windows

* fix lockfile

* lockfile

* fix lint

* Support v2 as well

* changeset

* lockfile

Author: penalosa

.changeset/hot-ravens-roll.md

@@ -0,0 +1,5 @@
+---
+"@cloudflare/vitest-pool-workers": minor
+---
+
+Support Vitest v3. While this drops testing for Vitest v2, we expect Vitest v2 will continue to work as well.

fixtures/additional-modules/test/index.test.ts

@@ -6,33 +6,19 @@ import os from "node:os";
 import path from "node:path";
 import { setTimeout } from "node:timers/promises";
 import { fetch } from "undici";
-import { afterAll, beforeAll, describe, expect, test } from "vitest";
-import {
-	runWranglerDev,
-	wranglerEntryPath,
-} from "../../shared/src/run-wrangler-long-lived";
+import { afterAll, beforeAll, describe, expect, test, vi } from "vitest";
+import { unstable_startWorker } from "wrangler";
+import { wranglerEntryPath } from "../../shared/src/run-wrangler-long-lived";
 
 async function getTmpDir() {
 	return fs.mkdtemp(path.join(os.tmpdir(), "wrangler-modules-"));
 }
 
-type WranglerDev = Awaited<ReturnType<typeof runWranglerDev>>;
+type WranglerDev = Awaited<ReturnType<typeof unstable_startWorker>>;
 function get(worker: WranglerDev, pathname: string) {
-	const url = `http://${worker.ip}:${worker.port}${pathname}`;
+	const url = `http://example.com${pathname}`;
 	// Disable Miniflare's pretty error page, so we can parse errors as JSON
-	return fetch(url, { headers: { "MF-Disable-Pretty-Error": "true" } });
-}
-
-async function retry<T>(closure: () => Promise<T>, max = 30): Promise<T> {
-	for (let attempt = 1; attempt <= max; attempt++) {
-		try {
-			return await closure();
-		} catch (e) {
-			if (attempt === max) throw e;
-		}
-		await setTimeout(1_000);
-	}
-	assert.fail("Unreachable");
+	return worker.fetch(url, { headers: { "MF-Disable-Pretty-Error": "true" } });
 }
 
 describe("find_additional_modules dev", () => {
@@ -52,10 +38,12 @@ describe("find_additional_modules dev", () => {
 			path.join(tmpDir, "wrangler.toml")
 		);
 
-		worker = await runWranglerDev(tmpDir, ["--port=0", "--inspector-port=0"]);
+		worker = await unstable_startWorker({
+			config: path.join(tmpDir, "wrangler.toml"),
+		});
 	});
 	afterAll(async () => {
-		await worker.stop();
+		await worker.dispose();
 		try {
 			await fs.rm(tmpDir, { recursive: true, force: true });
 		} catch (e) {
@@ -102,28 +90,27 @@ describe("find_additional_modules dev", () => {
 			path.join(srcDir, "dynamic.js"),
 			'export default "new dynamic";'
 		);
-		await retry(async () => {
+		await vi.waitFor(async () => {
 			const res = await get(worker, "/dynamic");
 			assert.strictEqual(await res.text(), "new dynamic");
 		});
 
 		// Delete dynamically imported file
 		await fs.rm(path.join(srcDir, "lang", "en.js"));
-		const res = await retry(async () => {
-			const res = await get(worker, "/lang/en");
-			assert.strictEqual(res.status, 500);
-			return res;
+
+		await vi.waitFor(async () => {
+			await expect(get(worker, "/lang/en")).rejects.toThrowError(
+				'No such module "lang/en.js".'
+			);
 		});
-		const error = (await res.json()) as { message?: string };
-		expect(error.message).toBe('No such module "lang/en.js".');
 
 		// Create new dynamically imported file in new directory
 		await fs.mkdir(path.join(srcDir, "lang", "en"));
 		await fs.writeFile(
 			path.join(srcDir, "lang", "en", "us.js"),
 			'export default { hello: "hey" };'
 		);
-		await retry(async () => {
+		await vi.waitFor(async () => {
 			const res = await get(worker, "/lang/en/us");
 			assert.strictEqual(await res.text(), "hey");
 		});
@@ -133,7 +120,7 @@ describe("find_additional_modules dev", () => {
 			path.join(srcDir, "lang", "en", "us.js"),
 			'export default { hello: "bye" };'
 		);
-		await retry(async () => {
+		await vi.waitFor(async () => {
 			const res = await get(worker, "/lang/en/us");
 			assert.strictEqual(await res.text(), "bye");
 		});

fixtures/asset-config/vitest.config.ts

@@ -33,7 +33,7 @@ export default defineWorkersConfig({
 		server: {
 			deps: {
 				// Vitest automatically adds `/^(?!.*node_modules).*\.mjs$/` as an
-				// `inline` RegExp: https://github.com/vitest-dev/vitest/blob/v2.1.1/packages/vitest/src/constants.ts#L9
+				// `inline` RegExp: https://github.com/vitest-dev/vitest/blob/v3.0.5/packages/vitest/src/constants.ts#L9
 				// We'd like `packages/vitest-pool-workers/dist/pool/index.mjs` to be
 				// externalised though. Unfortunately, `inline`s are checked before
 				// `external`s, so there's no nice way we can override this. Instead,