tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

symbol-for-value-throws-agent.js (2883B)

      1 // |reftest| shell-option(--setpref=atomics_wait_async) skip-if(!this.hasOwnProperty('SharedArrayBuffer')||!this.hasOwnProperty('Atomics')||(this.hasOwnProperty('getBuildConfiguration')&&getBuildConfiguration('arm64-simulator'))||!xulRuntime.shell) async -- SharedArrayBuffer,Atomics is not enabled unconditionally, ARM64 Simulator cannot emulate atomics, requires shell-options
      2 // Copyright (C) 2020 Rick Waldron. All rights reserved.
      3 // This code is governed by the BSD license found in the LICENSE file.
      4 /*---
      5 esid: sec-atomics.waitasync
      6 description: >
      7  Throws a TypeError if value arg is a Symbol
      8 info: |
      9  Atomics.waitAsync( typedArray, index, value, timeout )
     10 
     11  1. Return DoWait(async, typedArray, index, value, timeout).
     12 
     13  DoWait ( mode, typedArray, index, value, timeout )
     14 
     15  5. Otherwise, let v be ? ToInt32(value).
     16 
     17  ToInt32(value)
     18 
     19  1.Let number be ? ToNumber(argument).
     20 
     21    Symbol --> Throw a TypeError exception.
     22 
     23 flags: [async]
     24 includes: [atomicsHelper.js]
     25 features: [Atomics.waitAsync, SharedArrayBuffer, Symbol, Symbol.toPrimitive, TypedArray, Atomics, BigInt, arrow-function, async-functions]
     26 ---*/
     27 assert.sameValue(typeof Atomics.waitAsync, 'function', 'The value of `typeof Atomics.waitAsync` is "function"');
     28 const RUNNING = 1;
     29 
     30 $262.agent.start(`
     31  const poisonedValueOf = {
     32    valueOf: function() {
     33      throw new Test262Error('should not evaluate this code');
     34    }
     35  };
     36 
     37  const poisonedToPrimitive = {
     38    [Symbol.toPrimitive]: function() {
     39      throw new Test262Error("passing a poisoned object using @@ToPrimitive");
     40    }
     41  };
     42 
     43  $262.agent.receiveBroadcast(function(sab) {
     44    const i64a = new BigInt64Array(sab);
     45    Atomics.add(i64a, ${RUNNING}, 1n);
     46 
     47    let status1 = "";
     48    let status2 = "";
     49 
     50    try {
     51      Atomics.waitAsync(i64a, 0, Symbol("1"), poisonedValueOf);
     52    } catch (error) {
     53      status1 = 'A ' + error.name;
     54    }
     55    try {
     56      Atomics.waitAsync(i64a, 0, Symbol("2"), poisonedToPrimitive);
     57    } catch (error) {
     58      status2 = 'B ' + error.name;
     59    }
     60 
     61    $262.agent.report(status1);
     62    $262.agent.report(status2);
     63    $262.agent.leaving();
     64  });
     65 `);
     66 
     67 const i64a = new BigInt64Array(new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 4));
     68 
     69 $262.agent.safeBroadcastAsync(i64a, RUNNING, 1n).then(async agentCount => {
     70  assert.sameValue(agentCount, 1n, 'The value of `agentCount` is 1n');
     71 
     72  assert.sameValue(
     73    await $262.agent.getReportAsync(),
     74    'A TypeError',
     75    '(await $262.agent.getReportAsync()) resolves to the value "A TypeError"'
     76  );
     77 
     78  assert.sameValue(
     79    await $262.agent.getReportAsync(),
     80    'B TypeError',
     81    '(await $262.agent.getReportAsync()) resolves to the value "B TypeError"'
     82  );
     83 
     84  assert.sameValue(
     85    Atomics.notify(i64a, 0),
     86    0,
     87    'Atomics.notify(new BigInt64Array(new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 4)), 0) must return 0'
     88  );
     89 }).then($DONE, $DONE);