mozilla-release/testing/web-platform/tests/webrtc-quic/RTCQuicStream.https.html

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<title>RTCQuicStream.https.html</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../webrtc/RTCIceTransport-extension-helper.js"></script>
<script src="RTCQuicTransport-helper.js"></script>
<script src="RTCQuicStream-helper.js"></script>
<script>
'use strict';

// These tests are based on the following specification:
// https://w3c.github.io/webrtc-quic/

// The following helper functions are called from RTCQuicTransport-helper.js:
//   makeStandaloneQuicTransport
//   makeTwoConnectedQuicTransports
// The following helper functions are called from RTCQuicStream-helper.js:
//   closed_stream_test

promise_test(async t => {
  const [ quicTransport, ] = await makeTwoConnectedQuicTransports(t);
  const quicStream = quicTransport.createStream();
  assert_equals(quicStream.transport, quicTransport,
      'Expect transport to be set to the creating RTCQuicTransport.');
  assert_equals(quicStream.state, 'open', `Expect state to be 'open'.`);
  assert_equals(quicStream.readBufferedAmount, 0,
      'Expect read buffered amount to be 0.');
  assert_equals(quicStream.writeBufferedAmount, 0,
      'Expect write buffered amount to be 0.');
  assert_greater_than(quicStream.maxWriteBufferedAmount, 0,
      'Expect max write buffered amount to be greater than 0.');
}, 'createStream() returns an RTCQuicStream with initial properties set.');

promise_test(async t => {
  const quicTransport = await makeStandaloneQuicTransport(t);
  assert_throws_dom('InvalidStateError', () => quicTransport.createStream());
}, 'createStream() throws if the transport is not connected.');

promise_test(async t => {
  const quicTransport = await makeStandaloneQuicTransport(t);
  quicTransport.stop();
  assert_throws_dom('InvalidStateError', () => quicTransport.createStream());
}, 'createStream() throws if the transport is closed.');

promise_test(async t => {
  const [ quicTransport, ] = await makeTwoConnectedQuicTransports(t);
  const firstQuicStream = quicTransport.createStream();
  const secondQuicStream = quicTransport.createStream();
  quicTransport.stop();
  assert_equals(firstQuicStream.state, 'closed');
  assert_equals(secondQuicStream.state, 'closed');
}, 'RTCQuicTransport.stop() closes all local streams.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  localQuicTransport.createStream().write({ data: new Uint8Array([42]) });
  localQuicTransport.createStream().write({ data: new Uint8Array([42]) });
  const remoteWatcher =
      new EventWatcher(t, remoteQuicTransport, [ 'quicstream', 'statechange' ]);
  const { stream: firstRemoteStream } =
      await remoteWatcher.wait_for('quicstream');
  const { stream: secondRemoteStream } =
      await remoteWatcher.wait_for('quicstream');
  localQuicTransport.stop();
  await remoteWatcher.wait_for('statechange');
  assert_equals(firstRemoteStream.state, 'closed');
  assert_equals(secondRemoteStream.state, 'closed');
}, 'RTCQuicTransport.stop() closes all remote streams.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ finish: true });
  assert_equals(localStream.state, 'closing');
}, `write() with a finish changes state to 'closing'.`);

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ data: new Uint8Array(), finish: true });
  assert_equals(localStream.state, 'closing');
}, 'write() with a finish and an empty array changes state ' +
    `to 'closing'.`);

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ finish: true });
  assert_throws_dom('InvalidStateError', () => {
    localStream.write({ finish: true });
  });
}, `write() with finish twice throws InvalidStateError.`);

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.reset();
  assert_equals(localStream.state, 'closed');
}, `reset() changes state to 'closed'.`);

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ finish: true });
  localStream.reset();
  assert_equals(localStream.state, 'closed');
}, `reset() following write with finish changes state to 'closed'.`);

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.reset();
  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
  const { stream: remoteStream } = await remoteWatcher.wait_for('quicstream');
  assert_equals(remoteStream.state, 'open');
  const remoteStreamWatcher = new EventWatcher(t, remoteStream, 'statechange');
  await remoteStreamWatcher.wait_for('statechange');
  assert_equals(remoteStream.state, 'closed');
}, 'createStream() followed by reset() fires a quicstream event followed ' +
    `by a statechange event to 'closed' on the remote side.`);

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ finish: true });
  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
  const { stream: remoteStream } = await remoteWatcher.wait_for('quicstream');
  assert_equals(remoteStream.state, 'open');
  const remoteStreamWatcher = new EventWatcher(t, remoteStream, 'statechange');
  await remoteStream.waitForReadable(remoteStream.maxReadBufferedAmount);
  assert_object_equals(
      remoteStream.readInto(new Uint8Array(10)),
      { amount: 0, finished: true } );
  assert_equals(remoteStream.state, 'closing');
}, 'waitForReadable() promise resolves with remote finish');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ finish: true });
  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
  const { stream: remoteStream } = await remoteWatcher.wait_for('quicstream');
  await remoteStream.waitForReadable(remoteStream.maxReadBufferedAmount);
  assert_object_equals(
      remoteStream.readInto(new Uint8Array(10)),
      { amount: 0, finished: true } );
  assert_equals(remoteStream.state, 'closing');
  remoteStream.write({ finish: true });
  assert_equals(remoteStream.state, 'closed');
}, 'write() with a finish on a stream that has already read out finish ' +
    `changes state to 'closed'.`);

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ finish: true });
  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
  const { stream: remoteStream } = await remoteWatcher.wait_for('quicstream');
  remoteStream.write({ finish: true });
  assert_equals(localStream.state, 'closing');
  await localStream.waitForReadable(localStream.maxReadBufferedAmount);
  assert_object_equals(
      localStream.readInto(new Uint8Array(10)),
      { amount: 0, finished: true } );
  assert_equals(localStream.state, 'closed');
}, 'Reading out finish on stream that has already called write() with a ' +
    `finish  state to 'closed'.`);

promise_test(async t => {
    const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ finish: true });
  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
  const { stream: remoteStream } = await remoteWatcher.wait_for('quicstream');
  await remoteStream.waitForReadable(remoteStream.maxReadBufferedAmount);
  assert_object_equals(
      remoteStream.readInto(new Uint8Array(10)),
      { amount: 0, finished: true } );
  assert_equals(remoteStream.state, 'closing');
  localStream.reset();
  const remoteStreamWatcher = new EventWatcher(t, remoteStream, 'statechange');
  await remoteStreamWatcher.wait_for('statechange');
  assert_equals(remoteStream.state, 'closed');
}, 'Reading out finish then a getting a remote reset fires a statechange event ' +
    `to 'closed'.`);

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
    await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  assert_throws_dom('NotSupportedError', () =>
      localStream.write({ data: new Uint8Array() }));
}, 'write() without finish and an empty array throws NotSupportedError.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
    await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  assert_throws_dom('NotSupportedError', () =>
      localStream.write({}));
}, 'write() without finish and no data throws NotSupportedError.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
    await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ data: new Uint8Array([65]) });
  assert_equals(localStream.writeBufferedAmount, 1);
  localStream.write({ data: new Uint8Array([66, 67]) });
  assert_equals(localStream.writeBufferedAmount, 3);
  localStream.write({ data: new Uint8Array([68, 69, 70]) });
  assert_equals(localStream.writeBufferedAmount, 6);
}, 'write() adds to writeBufferedAmount each call.');


promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ data: new Uint8Array([42, 43]), finish: true });
  assert_equals(localStream.writeBufferedAmount, 2);
}, `write() data with a finish adds to writeBufferedAmount.`);

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({
    data: new Uint8Array(localStream.maxWriteBufferedAmount)
  });
  assert_equals(localStream.writeBufferedAmount,
      localStream.maxWriteBufferedAmount);
}, 'write() can write exactly maxWriteBufferedAmount.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  assert_throws_dom('OperationError', () => localStream.write({
    data: new Uint8Array(localStream.maxWriteBufferedAmount + 1)
  }));
  assert_equals(localStream.writeBufferedAmount, 0);
}, 'write() throws if data longer than maxWriteBufferedAmount.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write(
      { data: new Uint8Array(10)});
  assert_throws_dom('OperationError', () => localStream.write({
    data: new Uint8Array(localStream.maxWriteBufferedAmount)
  }));
  assert_equals(localStream.writeBufferedAmount, 10);
}, 'write() throws if total write buffered amount would be greater than ' +
    'maxWriteBufferedAmount.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ data: new Uint8Array(10) });
  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
  await remoteWatcher.wait_for('quicstream');
}, 'write() causes quicstream event to fire on the remote transport.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ finish: true });;
  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
  await remoteWatcher.wait_for('quicstream');
}, 'write() with a finish causes quicstream event to fire on the ' +
    'remote transport.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ finish: true });
  assert_throws_dom('InvalidStateError',
      () => localStream.write({ data: new Uint8Array([65]) }));
}, 'write() throws InvalidStateError if write() with finish has been called.');

closed_stream_test(async (t, stream) => {
  assert_throws_dom('InvalidStateError',
  () => stream.write({ data: new Uint8Array([65]) }));
}, 'write() throws InvalidStateError.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ data: generateData(10) });
  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
  const { stream : remoteStream} = await remoteWatcher.wait_for('quicstream');
  await remoteStream.waitForReadable(10);
  assert_equals(10, remoteStream.readBufferedAmount);
  remoteStream.reset();
  assert_equals(0, remoteStream.readBufferedAmount);
}, 'readBufferedAmount set to 0 after local reset().');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ data: generateData(10) });
  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
  const { stream : remoteStream} = await remoteWatcher.wait_for('quicstream');
  await remoteStream.waitForReadable(10);
  assert_equals(10, remoteStream.readBufferedAmount);
  localStream.reset();
  const remoteStreamWatcher =
        new EventWatcher(t, remoteStream, 'statechange');
  await remoteStreamWatcher.wait_for('statechange');
  assert_equals(remoteStream.state, 'closed');
  assert_equals(0, remoteStream.readBufferedAmount);
}, 'readBufferedAmount set to 0 after remote reset().');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ data: new Uint8Array(10) });
  localStream.reset();
  assert_equals(localStream.writeBufferedAmount, 0);
}, 'writeBufferedAmount set to 0 after local reset().');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ finish: true });
  const remoteWatcher =
      new EventWatcher(t, remoteQuicTransport, 'quicstream');
  const { stream: remoteStream } = await remoteWatcher.wait_for('quicstream');
  await remoteStream.waitForReadable(10);
  assert_object_equals(
      remoteStream.readInto(new Uint8Array(10)),
      { amount: 0, finished: true });
  remoteStream.write({ data: new Uint8Array(10) });
  assert_equals(remoteStream.writeBufferedAmount, 10);
  remoteStream.write({ finish: true });
  assert_equals(remoteStream.writeBufferedAmount, 0);
}, 'writeBufferedAmount set to 0 after reading remote finish, followed ' +
    'by write() with finish.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ data: new Uint8Array(10) });
  localQuicTransport.stop();
  assert_equals(localStream.writeBufferedAmount, 0);
}, 'writeBufferedAmount set to 0 after local RTCQuicTransport stop().');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ data: new Uint8Array(10) });
  localStream.write({ finish: true });
  assert_equals(localStream.writeBufferedAmount, 10);
}, 'writeBufferedAmount maintained after write() with finish has been called.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  await localStream.waitForWriteBufferedAmountBelow(0);
}, 'waitForWriteBufferedAmountBelow(0) resolves immediately.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  await localStream.waitForWriteBufferedAmountBelow(
      localStream.maxWriteBufferedAmount);
}, 'waitForWriteBufferedAmountBelow(maxWriteBufferedAmount) resolves ' +
    'immediately.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({
    data: new Uint8Array(localStream.maxWriteBufferedAmount)
  });
  const promise1 = localStream.waitForWriteBufferedAmountBelow(0);
  const promise2 = localStream.waitForWriteBufferedAmountBelow(0);
  localStream.write({ finish: true });
  await Promise.all([
      promise_rejects_dom(t, 'InvalidStateError', promise1),
      promise_rejects_dom(t, 'InvalidStateError', promise2)]);
}, 'Pending waitForWriteBufferedAmountBelow() promises rejected after ' +
    'write() with finish.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({
    data: new Uint8Array(localStream.maxWriteBufferedAmount)
  });
  localStream.write({ finish: true });
  const promise1 = localStream.waitForWriteBufferedAmountBelow(0);
  const promise2 = localStream.waitForWriteBufferedAmountBelow(0);
  await Promise.all([
      promise_rejects_dom(t, 'InvalidStateError', promise1),
      promise_rejects_dom(t, 'InvalidStateError', promise2)]);
}, 'waitForWriteBufferedAmountBelow() promises immediately rejected after ' +
    'wrote finish.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({
    data: new Uint8Array(localStream.maxWriteBufferedAmount)
  });
  const promise1 = localStream.waitForWriteBufferedAmountBelow(0);
  const promise2 = localStream.waitForWriteBufferedAmountBelow(0);
  localStream.reset();
  await Promise.all([
      promise_rejects_dom(t, 'InvalidStateError', promise1),
      promise_rejects_dom(t, 'InvalidStateError', promise2)]);
}, 'Pending waitForWriteBufferedAmountBelow() promises rejected after ' +
    'reset().');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({
    data: new Uint8Array(localStream.maxWriteBufferedAmount)
  });
  const promise1 = localStream.waitForWriteBufferedAmountBelow(0);
  const promise2 = localStream.waitForWriteBufferedAmountBelow(0);
  localQuicTransport.stop();
  await Promise.all([
      promise_rejects_dom(t, 'InvalidStateError', promise1),
      promise_rejects_dom(t, 'InvalidStateError', promise2)]);
}, 'Pending waitForWriteBufferedAmountBelow() promises rejected after ' +
    'RTCQuicTransport stop().');

closed_stream_test(async (t, stream) => {
  await promise_rejects_dom(t, 'InvalidStateError',
      stream.waitForWriteBufferedAmountBelow(0));
}, 'waitForWriteBufferedBelow() rejects with InvalidStateError.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  assert_object_equals(
      localStream.readInto(new Uint8Array(10)),
      { amount: 0, finished: false } );
}, 'readInto() on new local stream returns amount 0.');

closed_stream_test(async (t, stream) => {
  assert_throws_dom('InvalidStateError', () => stream.readInto(new Uint8Array(1)));
}, 'readInto() throws InvalidStateError.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ data: new Uint8Array([ 65 ]) });
  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
  const { stream: remoteStream } = await remoteWatcher.wait_for('quicstream');
  await remoteStream.waitForReadable(1);
  assert_equals(remoteStream.readBufferedAmount, 1);
  const readBuffer = new Uint8Array(3);
  assert_object_equals(
      remoteStream.readInto(readBuffer),
      { amount: 1, finished: false } );
  assert_array_equals(readBuffer, [ 65, 0, 0 ]);
  assert_equals(remoteStream.readBufferedAmount, 0);
}, 'Read 1 byte.');

// Returns a Uint8Array of length |amount| with generated data.
function generateData(amount) {
  const data = new Uint8Array(amount);
  for (let i = 0; i < data.length; i++) {
    data[i] = i % 256;
  }
  return data;
}

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  const data = generateData(10);
  localStream.write({ data: data, finish: true });
  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
  const { stream: remoteStream } = await remoteWatcher.wait_for('quicstream');
  await remoteStream.waitForReadable(data.length + 1);
  const readBuffer = new Uint8Array(5);
  assert_object_equals(
      remoteStream.readInto(readBuffer),
      { amount: 5, finished: false} );
  assert_array_equals(
      readBuffer, data.subarray(0, 5));
  const finReadBuffer = new Uint8Array(5);
  assert_object_equals(
      remoteStream.readInto(finReadBuffer),
      { amount: 5, finished: true} );
  assert_array_equals(
    finReadBuffer, data.subarray(5, data.length));
}, 'readInto() reads out finish after reading all data.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ finish: true });
  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
  const { stream: remoteStream } = await remoteWatcher.wait_for('quicstream');
  await remoteStream.waitForReadable(remoteStream.maxReadBufferedAmount);
  assert_object_equals(
      remoteStream.readInto(new Uint8Array(10)),
      { amount: 0, finished: true } );
}, 'waitForReadable() resolves with write() with finish.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  const writeData = generateData(10);
  localStream.write({ data: writeData });
  localStream.write({ finish: true });
  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
  const { stream: remoteStream } = await remoteWatcher.wait_for('quicstream');
  await remoteStream.waitForReadable(11);
  assert_equals(remoteStream.readBufferedAmount, 10);
  const readBuffer = new Uint8Array(10);
  assert_object_equals(
      remoteStream.readInto(readBuffer), { amount: 10, finished: true } );
  assert_array_equals(readBuffer, writeData);
}, 'waitForReadable() resolves early if remote finish is received.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  await promise_rejects_js(t, TypeError,
      localStream.waitForReadable(localStream.maxReadBufferedAmount + 1));
}, 'waitForReadable() rejects with TypeError if amount is more than ' +
    'maxReadBufferedAmount.');

promise_test(async t => {
    const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ finish: true });
  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
  const { stream: remoteStream } = await remoteWatcher.wait_for('quicstream');
  await remoteStream.waitForReadable(remoteStream.maxReadBufferedAmount);
  assert_object_equals(
      remoteStream.readInto(new Uint8Array(10)),
      { amount: 0, finished: true } );

  const promise1 = remoteStream.waitForReadable(10);
  const promise2 = remoteStream.waitForReadable(10);
  await Promise.all([
      promise_rejects_dom(t, 'InvalidStateError', promise1),
      promise_rejects_dom(t, 'InvalidStateError', promise2)]);
}, 'waitForReadable() promises immediately rejected with InvalidStateError ' +
    'after finish is read out.');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  const promise1 = localStream.waitForReadable(10);
  const promise2 = localStream.waitForReadable(10);
  localStream.reset();
  await Promise.all([
promise_rejects_dom(t, 'InvalidStateError', promise1),
      promise_rejects_dom(t, 'InvalidStateError', promise2)]);
}, 'Pending waitForReadable() promises rejected after reset().');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ data: new Uint8Array(1) });
  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
  const { stream : remoteStream} = await remoteWatcher.wait_for('quicstream');
  const promise1 = remoteStream.waitForReadable(10);
  const promise2 = remoteStream.waitForReadable(10);
  localStream.reset();
  await Promise.all([
      promise_rejects_dom(t, 'InvalidStateError', promise1),
      promise_rejects_dom(t, 'InvalidStateError', promise2)]);
}, 'Pending waitForReadable() promises rejected after remote reset().');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  const promise1 = localStream.waitForReadable(10);
  const promise2 = localStream.waitForReadable(10);
  localQuicTransport.stop();
  await Promise.all([
      promise_rejects_dom(t, 'InvalidStateError', promise1),
      promise_rejects_dom(t, 'InvalidStateError', promise2)]);
}, 'Pending waitForReadable() promises rejected after RTCQuicTransport ' +
   'stop().');

promise_test(async t => {
  const [ localQuicTransport, remoteQuicTransport ] =
      await makeTwoConnectedQuicTransports(t);
  const localStream = localQuicTransport.createStream();
  localStream.write({ data: new Uint8Array(1) });
  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
  const { stream : remoteStream} = await remoteWatcher.wait_for('quicstream');
  const promise1 = remoteStream.waitForReadable(10);
  const promise2 = remoteStream.waitForReadable(10);
  localQuicTransport.stop();
  await Promise.all([
      promise_rejects_dom(t, 'InvalidStateError', promise1),
      promise_rejects_dom(t, 'InvalidStateError', promise2)]);
}, 'Pending waitForReadable() promises rejected after remote RTCQuicTransport ' +
    'stop().');

closed_stream_test(async (t, stream) => {
  await promise_rejects_dom(t, 'InvalidStateError',
      stream.waitForReadable(1));
}, 'waitForReadable() rejects with InvalidStateError.');

</script>