third_party/web_platform_tests/fetch/api/response/response-idl.html

<!doctype html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Response idl interface</title>
    <meta name="help" href="https://fetch.spec.whatwg.org/#response">
    <meta name="author" title="Canon Research France" href="https://www.crf.canon.fr">
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
    <script src="/resources/WebIDLParser.js"></script>
    <script src="/resources/idlharness.js"></script>
  </head>
  <body>
    <script id="body-idl" type="text/plain">
      typedef any JSON;
      typedef (Blob or BufferSource or FormData or URLSearchParams or USVString) BodyInit;

      [NoInterfaceObject,
      Exposed=(Window,Worker)]
      interface Body {
        readonly attribute ReadableStream? body;
        readonly attribute boolean bodyUsed;
        [NewObject] Promise<ArrayBuffer> arrayBuffer();
        [NewObject] Promise<Blob> blob();
        [NewObject] Promise<FormData> formData();
        [NewObject] Promise<JSON> json();
        [NewObject] Promise<USVString> text();
      };
    </script>
    <script id="response-idl" type="text/plain">
      [Constructor(optional BodyInit body, optional ResponseInit init),
      Exposed=(Window,Worker)]
      interface Response {
        [NewObject] static Response error();
        [NewObject] static Response redirect(USVString url, optional unsigned short status = 302);

        readonly attribute ResponseType type;

        readonly attribute USVString url;
        readonly attribute unsigned short status;
        readonly attribute boolean ok;
        readonly attribute ByteString statusText;
        [SameObject] readonly attribute Headers headers;
        readonly attribute Promise<Headers> trailer;

        [NewObject] Response clone();
      };
      Response implements Body;

      dictionary ResponseInit {
        unsigned short status = 200;
        ByteString statusText = "OK";
        HeadersInit headers;
      };

      enum ResponseType { "basic", "cors", "default", "error", "opaque", "opaqueredirect" };
    </script>
    <script>
      var idlsArray = new IdlArray();
      var idl = document.getElementById("body-idl").textContent
      idl += document.getElementById("response-idl").textContent

      idlsArray.add_idls(idl);
      idlsArray.add_untested_idls("interface Headers {};");
      idlsArray.add_untested_idls("interface ReadableStream {};");
      idlsArray.add_objects({ Response: ['new Response()'] });
      idlsArray.test();
    </script>
  </body>
</html>