<!doctype html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Consuming Request body with non BufferSource ReadableStream chunks</title>
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
  </head>
  <body>
    <script>
promise_test(test => {
    var stream = new ReadableStream({start: controller => {
        controller.enqueue("This is not a buffer");
        controller.close();
    }});
    var request = new Request("", {body: stream, method: "POST"});
    return promise_rejects_js(test, TypeError, request.text());
}, "Request body should only contain BufferSource chunks");
    </script>
  </body>
</html>