enqueue-with-detached-buffer.any.js

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// META: global=window,worker,shadowrealm

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.

      structuredClone(buffer, { transfer: [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');