tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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testDirectProxySet9.js (610B)

      1 // Assigning to a proxy with no set handler calls the defineProperty handler
      2 // when an existing own data property already exists on the target.
      3 
      4 var t = {x: 1};
      5 var p = new Proxy(t, {
      6    defineProperty(t, id, desc) {
      7        hits++;
      8 
      9        // ES6 draft rev 28 (2014 Oct 14) 9.1.9 step 5.e.i.
     10        // Since the property already exists, the system only changes
     11        // the value. desc is otherwise empty.
     12        assertEq(Object.getOwnPropertyNames(desc).join(","), "value");
     13        assertEq(desc.value, 42);
     14        return true;
     15    }
     16 });
     17 var hits = 0;
     18 p.x = 42;
     19 assertEq(hits, 1);
     20 assertEq(t.x, 1);