tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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immutable-array-buffers-transferable.js (929B)

      1 // |jit-test| --enable-arraybuffer-immutable; skip-if: !ArrayBuffer.prototype.transferToImmutable
      2 
      3 load(libdir + "asserts.js");
      4 
      5 const scopes = [
      6  "SameProcess",
      7  "DifferentProcess",
      8  "DifferentProcessForIndexedDB",
      9 ];
     10 
     11 function testArrayBufferTransferable(scope) {
     12  var length = 4;
     13  var byteLength = length * Uint8Array.BYTES_PER_ELEMENT;
     14 
     15  var ab = new ArrayBuffer(byteLength);
     16  assertEq(ab.immutable, false);
     17  assertEq(ab.byteLength, byteLength);
     18 
     19  var ta = new Uint8Array(ab);
     20  ta.set([33, 44, 55, 66]);
     21 
     22  var iab = ab.transferToImmutable();
     23  var ita = new Uint8Array(iab);
     24 
     25  assertEq(ab.detached, true);
     26  assertEq(iab.detached, false);
     27  assertEq(ita.toString(), "33,44,55,66");
     28 
     29  assertThrowsInstanceOf(() => serialize(iab, [iab], {scope}), TypeError);
     30 
     31  assertEq(ab.detached, true);
     32  assertEq(iab.detached, false);
     33  assertEq(ita.toString(), "33,44,55,66");
     34 }
     35 scopes.forEach(testArrayBufferTransferable);