text: // Copyright (C) 2020 Rick Waldron. All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  /*---
  esid: sec-atomics.waitasync
  description: >
    Returns "not-equal" when value arg does not match an index in the typedArray
  info: |
    Atomics.waitAsync( typedArray, index, value, timeout )
  
    1. Return DoWait(async, typedArray, index, value, timeout).
  
    DoWait ( mode, typedArray, index, value, timeout )
  
    16. Let w be ! AtomicLoad(typedArray, i).
    17. If v is not equal to w, then
      a. Perform LeaveCriticalSection(WL).
      b. If mode is sync, then
        i. Return the String "not-equal".
      c. Perform ! Call(capability.[[Resolve]], undefined, « "not-equal" »).
      d. Return promiseCapability.[[Promise]].
  
  flags: [async]
  includes: [atomicsHelper.js]
  features: [Atomics.waitAsync, SharedArrayBuffer, TypedArray, Atomics, BigInt, arrow-function, async-functions]
  ---*/
  assert.sameValue(typeof Atomics.waitAsync, 'function', 'The value of `typeof Atomics.waitAsync` is "function"');
  const RUNNING = 1;
  const value = 42n;
  
  $262.agent.start(`
    $262.agent.receiveBroadcast(function(sab) {
      const i64a = new BigInt64Array(sab);
      Atomics.add(i64a, ${RUNNING}, 1n);
      $262.agent.report(Atomics.store(i64a, 0, 42n));
      $262.agent.report(Atomics.waitAsync(i64a, 0, 0n).value);
      $262.agent.leaving();
    });
  `);
  
  const i64a = new BigInt64Array(new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 4));
  
  $262.agent.safeBroadcastAsync(i64a, RUNNING, 1n).then(async agentCount => {
    assert.sameValue(agentCount, 1n, 'The value of `agentCount` is 1n');
  
    assert.sameValue(
      await $262.agent.getReportAsync(),
      value.toString(),
      '(await $262.agent.getReportAsync()) must return the same value returned by value.toString()'
    );
  
    assert.sameValue(
      await $262.agent.getReportAsync(),
      'not-equal',
      '(await $262.agent.getReportAsync()) resolves to the value "not-equal"'
    );
  
    assert.sameValue(
      Atomics.notify(i64a, 0, 1),
      0,
      'Atomics.notify(new BigInt64Array(new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 4)), 0, 1) must return 0'
    );
  }).then($DONE, $DONE);
  