1 files changed, 15 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webtransport/datagram-bad-chunk.https.any.js b/testing/web-platform/tests/webtransport/datagram-bad-chunk.https.any.js
new file mode 100644
index 0000000000..92601dec9a
--- /dev/null
+++ b/testing/web-platform/tests/webtransport/datagram-bad-chunk.https.any.js
@@ -0,0 +1,15 @@
+// META: global=window,worker
+// META: script=/common/get-host-info.sub.js
+// META: script=resources/webtransport-test-helpers.sub.js
+// META: script=/common/utils.js
+
+promise_test(async t => {
+  // Establish a WebTransport session.
+  const wt = new WebTransport(webtransport_url('echo.py'));
+  t.add_cleanup(() => wt.close());
+  await wt.ready;
+
+  const writer = wt.datagrams.writable.getWriter();
+  await promise_rejects_js(t, TypeError, writer.write("foo"));
+  await promise_rejects_js(t, TypeError, writer.write(new Uint8Array(0)));
+}, 'Datagram should reject when non-buffer-source data is written');