tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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testDirectProxyHasOwnProperty.js (1210B)

      1 // Forward to the target if the trap is not defined
      2 var proto = Object.create(null, {
      3    'foo': {
      4        configurable: true
      5    }
      6 });
      7 var descs = {
      8    'bar': {
      9        configurable: true
     10    }
     11 };
     12 descs[Symbol.for("quux")] = {configurable: true};
     13 var target = Object.create(proto, descs);
     14 
     15 for (let p of [new Proxy(target, {}), Proxy.revocable(target, {}).proxy]) {
     16    assertEq(({}).hasOwnProperty.call(p, 'foo'), false);
     17    assertEq(({}).hasOwnProperty.call(p, 'bar'), true);
     18    assertEq(({}).hasOwnProperty.call(p, 'quux'), false);
     19    assertEq(({}).hasOwnProperty.call(p, Symbol('quux')), false);
     20    assertEq(({}).hasOwnProperty.call(p, 'Symbol(quux)'), false);
     21    assertEq(({}).hasOwnProperty.call(p, Symbol.for('quux')), true);
     22 }
     23 
     24 // Make sure only the getOwnPropertyDescriptor trap is called, and not the has
     25 // trap.
     26 var called;
     27 var handler = { getOwnPropertyDescriptor: function () { called = true; },
     28                has: function () { assertEq(false, true, "has trap must not be called"); }
     29              }
     30 
     31 for (let p of [new Proxy({}, handler), Proxy.revocable({}, handler).proxy]) {
     32    called = false;
     33    assertEq(({}).hasOwnProperty.call(p, 'foo'), false);
     34    assertEq(called, true);
     35 }