tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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Map-surfaces-2.js (840B)

      1 // Map methods throw when passed a this-value that isn't a Map.
      2 
      3 load(libdir + "asserts.js");
      4 
      5 function testcase(obj, fn, ...args) {
      6    assertEq(typeof fn, "function");
      7    assertThrowsInstanceOf(function () { fn.apply(obj, args); }, TypeError);
      8 }
      9 
     10 var Map_size_getter = Object.getOwnPropertyDescriptor(Map.prototype, "size").get;
     11 
     12 function test(obj) {
     13    testcase(obj, Map.prototype.get, "x");
     14    testcase(obj, Map.prototype.has, "x");
     15    testcase(obj, Map.prototype.set, "x", 1);
     16    testcase(obj, Map.prototype.delete, "x");
     17    testcase(obj, Map.prototype.clear);
     18    testcase(obj, Map.prototype.keys);
     19    testcase(obj, Map.prototype.values);
     20    testcase(obj, Map.prototype.entries);
     21    testcase(obj, Map_size_getter);
     22 }
     23 
     24 test(Map.prototype);
     25 test(Object.create(new Map));
     26 test(new Set());
     27 test({});
     28 test(null);
     29 test(undefined);