tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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array-iterator-surfaces-1.js (583B)

      1 // Superficial tests of the Array.prototype[@@iterator] builtin function and its workalikes.
      2 
      3 load(libdir + "iteration.js");
      4 
      5 var constructors = [Array, String, Uint8Array, Uint8ClampedArray];
      6 for (var c of constructors) {
      7    assertEq(c.prototype[Symbol.iterator].length, 0);
      8 
      9    var loc = (c === Array || c === String)
     10            ? c.prototype
     11            : Object.getPrototypeOf(c.prototype);
     12 
     13    var desc = Object.getOwnPropertyDescriptor(loc, Symbol.iterator);
     14    assertEq(desc.configurable, true);
     15    assertEq(desc.enumerable, false);
     16    assertEq(desc.writable, true);
     17 }