1 files changed, 19 insertions, 0 deletions
diff --git a/testing/web-platform/tests/streams/readable-byte-streams/enqueue-with-detached-buffer.window.js b/testing/web-platform/tests/streams/readable-byte-streams/enqueue-with-detached-buffer.window.js
new file mode 100644
index 0000000000..15400f6934
--- /dev/null
+++ b/testing/web-platform/tests/streams/readable-byte-streams/enqueue-with-detached-buffer.window.js
@@ -0,0 +1,19 @@
+promise_test(async t => {
+  const error = new Error('cannot proceed');
+  const rs = new ReadableStream({
+    type: 'bytes',
+    pull: t.step_func((controller) => {
+      const buffer = controller.byobRequest.view.buffer;
+      // Detach the buffer.
+      postMessage(buffer, '*', [buffer]);
+
+      // Try to enqueue with a new buffer.
+      assert_throws_js(TypeError, () => controller.enqueue(new Uint8Array([42])));
+
+      // If we got here the test passed.
+      controller.error(error);
+    })
+  });
+  const reader = rs.getReader({ mode: 'byob' });
+  await promise_rejects_exactly(t, error, reader.read(new Uint8Array(1)));
+}, 'enqueue after detaching byobRequest.view.buffer should throw');