lib: add fetch

Fixes: https://github.com/nodejs/node/issues/19393

PR-URL: https://github.com/nodejs/node/pull/41749
Refs: https://github.com/nodejs/undici/pull/1183
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Robert Nagy <ronagy@icloud.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Mestery <mestery@protonmail.com>
Reviewed-By: Mohammed Keyvanzadeh <mohammadkeyvanzade94@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Myles Borins <myles.borins@gmail.com>

2 files changed, 44 insertions, 3 deletions

diff --git a/test/common/index.js b/test/common/index.js
index a1744836887..fdffecb9af1 100644
--- a/test/common/index.js
+++ b/test/common/index.js
@@ -68,12 +68,12 @@ if (process.argv.length === 2 &&
     !process.env.NODE_SKIP_FLAG_CHECK &&
     isMainThread &&
     hasCrypto &&
-    require.main &&
-    require('cluster').isPrimary) {
+    require('cluster').isPrimary &&
+    fs.existsSync(process.argv[1])) {
   // The copyright notice is relatively big and the flags could come afterwards.
   const bytesToRead = 1500;
   const buffer = Buffer.allocUnsafe(bytesToRead);
-  const fd = fs.openSync(require.main.filename, 'r');
+  const fd = fs.openSync(process.argv[1], 'r');
   const bytesRead = fs.readSync(fd, buffer, 0, bytesToRead);
   fs.closeSync(fd);
   const source = buffer.toString('utf8', 0, bytesRead);
@@ -300,6 +300,15 @@ if (global.structuredClone) {
   knownGlobals.push(global.structuredClone);
 }
 
+if (global.fetch) {
+  knownGlobals.push(
+    global.fetch,
+    global.Request,
+    global.Response,
+    global.Headers,
+  );
+}
+
 function allowGlobals(...allowlist) {
   knownGlobals = knownGlobals.concat(allowlist);
 }
diff --git a/test/parallel/test-fetch.mjs b/test/parallel/test-fetch.mjs
new file mode 100644
index 00000000000..fa433c78fc7
--- /dev/null
+++ b/test/parallel/test-fetch.mjs
@@ -0,0 +1,32 @@
+// Flags: --experimental-fetch --no-warnings
+
+import '../common/index.mjs';
+
+import assert from 'assert';
+import events from 'events';
+import http from 'http';
+
+assert.strictEqual(typeof globalThis.fetch, 'function');
+assert.strictEqual(typeof globalThis.Headers, 'function');
+assert.strictEqual(typeof globalThis.Request, 'function');
+assert.strictEqual(typeof globalThis.Response, 'function');
+
+const server = http.createServer((req, res) => {
+  // TODO: Remove this once keep-alive behavior can be disabled from the client
+  // side.
+  res.setHeader('Keep-Alive', 'timeout=0, max=0');
+  res.end('Hello world');
+});
+server.listen(0);
+await events.once(server, 'listening');
+const port = server.address().port;
+
+const response = await fetch(`http://localhost:${port}`);
+
+assert(response instanceof Response);
+assert.strictEqual(response.status, 200);
+assert.strictEqual(response.statusText, 'OK');
+const body = await response.text();
+assert.strictEqual(body, 'Hello world');
+
+server.close();