<!DOCTYPE html>
<meta charset="utf-8">
<title>ReadableStream disturbed tests, via Response's bodyUsed property</title>
<link rel="author" title="Domenic Denicola" href="mailto:d@domenic.me">
<link rel="author" title="Takeshi Yoshino" href="mailto:tyoshino@chromium.org">

<link rel="help" href="https://streams.spec.whatwg.org/#is-readable-stream-disturbed">
<link rel="help" href="https://fetch.spec.whatwg.org/#dom-body-bodyused">

<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<script>
"use strict";

test(() => {
  const stream = new ReadableStream();
  const response = new Response(stream);
  assert_false(response.bodyUsed, "On construction");

  const reader = stream.getReader();
  assert_false(response.bodyUsed, "After getting a reader");

  reader.read();
  assert_true(response.bodyUsed, "After calling stream.read()");
}, "A non-closed stream on which read() has been called");

test(() => {
  const stream = new ReadableStream();
  const response = new Response(stream);
  assert_false(response.bodyUsed, "On construction");

  const reader = stream.getReader();
  assert_false(response.bodyUsed, "After getting a reader");

  reader.cancel();
  assert_true(response.bodyUsed, "After calling stream.cancel()");
}, "A non-closed stream on which cancel() has been called");

test(() => {
  const stream = new ReadableStream({
    start(c) {
      c.close();
    }
  });
  const response = new Response(stream);
  assert_false(response.bodyUsed, "On construction");

  const reader = stream.getReader();
  assert_false(response.bodyUsed, "After getting a reader");

  reader.read();
  assert_true(response.bodyUsed, "After calling stream.read()");
}, "A closed stream on which read() has been called");

test(() => {
  const stream = new ReadableStream({
    start(c) {
      c.error(new Error("some error"));
    }
  });
  const response = new Response(stream);
  assert_false(response.bodyUsed, "On construction");

  const reader = stream.getReader();
  assert_false(response.bodyUsed, "After getting a reader");

  reader.read().then(() => { }, () => { });
  assert_true(response.bodyUsed, "After calling stream.read()");
}, "An errored stream on which read() has been called");

test(() => {
  const stream = new ReadableStream({
    start(c) {
      c.error(new Error("some error"));
    }
  });
  const response = new Response(stream);
  assert_false(response.bodyUsed, "On construction");

  const reader = stream.getReader();
  assert_false(response.bodyUsed, "After getting a reader");

  reader.cancel().then(() => { }, () => { });
  assert_true(response.bodyUsed, "After calling stream.cancel()");
}, "An errored stream on which cancel() has been called");

</script>