test: test streambase already has a consumer

nodejs · May 18, 2023 · ae09e10 · ae09e10
1 parent 05693ac
commit ae09e10
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/test/parallel/test-whatwg-webstreams-adapters-streambase.js b/test/parallel/test-whatwg-webstreams-adapters-streambase.js
@@ -65,3 +65,12 @@ const {
   const readable = newReadableStreamFromStreamBase(stream);
   readable.cancel().then(common.mustCall());
 }
+
+{
+  const stream = new JSStream();
+  stream.onread = () => {};
+  assert.throws(() => newReadableStreamFromStreamBase(stream), {
+    code: 'ERR_INVALID_STATE',
+    message: /StreamBase already has a consumer/
+  });
+}