tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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symbol-for-value-throws-agent.js (2852B)

      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 /*---
      6 esid: sec-atomics.waitasync
      7 description: >
      8  Throws a TypeError if value arg is a Symbol
      9 info: |
     10  Atomics.waitAsync( typedArray, index, value, timeout )
     11 
     12  1. Return DoWait(async, typedArray, index, value, timeout).
     13 
     14  DoWait ( mode, typedArray, index, value, timeout )
     15 
     16  5. Otherwise, let v be ? ToInt32(value).
     17 
     18  ToInt32(value)
     19 
     20  1.Let number be ? ToNumber(argument).
     21 
     22    Symbol --> Throw a TypeError exception.
     23 
     24 flags: [async]
     25 includes: [atomicsHelper.js]
     26 features: [Atomics.waitAsync, SharedArrayBuffer, Symbol, Symbol.toPrimitive, TypedArray, Atomics, arrow-function, async-functions]
     27 ---*/
     28 assert.sameValue(typeof Atomics.waitAsync, 'function', 'The value of `typeof Atomics.waitAsync` is "function"');
     29 
     30 const RUNNING = 1;
     31 
     32 $262.agent.start(`
     33  const poisonedValueOf = {
     34    valueOf: function() {
     35      throw new Test262Error('should not evaluate this code');
     36    }
     37  };
     38 
     39  const poisonedToPrimitive = {
     40    [Symbol.toPrimitive]: function() {
     41      throw new Test262Error("passing a poisoned object using @@ToPrimitive");
     42    }
     43  };
     44 
     45  $262.agent.receiveBroadcast(function(sab) {
     46    const i32a = new Int32Array(sab);
     47    Atomics.add(i32a, ${RUNNING}, 1);
     48 
     49    let status1 = "";
     50    let status2 = "";
     51 
     52    try {
     53      Atomics.waitAsync(i32a, 0, Symbol("1"), poisonedValueOf);
     54    } catch (error) {
     55      status1 = 'A ' + error.name;
     56    }
     57    try {
     58      Atomics.waitAsync(i32a, 0, Symbol("2"), poisonedToPrimitive);
     59    } catch (error) {
     60      status2 = 'B ' + error.name;
     61    }
     62 
     63    $262.agent.report(status1);
     64    $262.agent.report(status2);
     65    $262.agent.leaving();
     66  });
     67 `);
     68 
     69 const i32a = new Int32Array(
     70  new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4)
     71 );
     72 
     73 $262.agent.safeBroadcastAsync(i32a, RUNNING, 1).then(async (agentCount) => {
     74 
     75  assert.sameValue(agentCount, 1, 'The value of `agentCount` is 1');
     76 
     77  assert.sameValue(
     78    await $262.agent.getReportAsync(),
     79    'A TypeError',
     80    '(await $262.agent.getReportAsync()) resolves to the value "A TypeError"'
     81  );
     82 
     83  assert.sameValue(
     84    await $262.agent.getReportAsync(),
     85    'B TypeError',
     86    '(await $262.agent.getReportAsync()) resolves to the value "B TypeError"'
     87  );
     88 
     89  assert.sameValue(Atomics.notify(i32a, 0), 0, 'Atomics.notify(new Int32Array(new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4)), 0) must return 0');
     90 
     91 }).then($DONE, $DONE);