quic: add test for no onstream crash

Signed-off-by: Efe Karasakal <hi@efe.dev>

Author: efekrskl

test/parallel/test-quic-stream-uni-no-onstream.mjs

@@ -0,0 +1,47 @@
+// Flags: --experimental-quic --no-warnings
+// Test: client-initiated unidirectional stream with no onstream
+// The client creates a uni stream with no onstream.
+// Verify that this causes no crash.
+
+import {hasQuic, skip, mustCall} from '../common/index.mjs';
+import {createPrivateKey} from 'node:crypto';
+import * as fixtures from '../common/fixtures.mjs';
+
+const {readKey} = fixtures;
+
+if (!hasQuic) {
+  skip('QUIC is not enabled');
+}
+
+const {listen, connect} = await import('../common/quic.mjs');
+
+const serverKey = createPrivateKey(readKey('agent1-key.pem'));
+const serverCert = readKey('agent1-cert.pem');
+
+const done = Promise.withResolvers();
+
+const serverEndpoint = await listen(mustCall(async (session) => {
+  await session.opened;
+  done.resolve();
+}), {
+  sni: { '*': { keys: [serverKey], certs: [serverCert] } },
+  alpn: ['repro'],
+});
+
+const clientSession = await connect(serverEndpoint.address, {
+  servername: 'localhost',
+  alpn: 'repro',
+  ca: serverCert,
+});
+
+await clientSession.opened;
+
+await clientSession.createUnidirectionalStream({
+  body: 'something something darkside',
+});
+
+await done.promise;
+
+await clientSession.close();
+
+await serverEndpoint.close();