third_party/WebKit/LayoutTests/fast/loader/stateobjects/state-attribute-only-one-deserialization.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4     <script src="../../../resources/js-test.js"></script>
   5 </head/>
   6 <body>
   7 <script>
   8     description("Make sure the same deserialization of the state object is used every time (both in the history object and popstate events).");
   9
  10     window.jsTestIsAsync = true;
  11     if (window.testRunner) {
  12         testRunner.clearBackForwardList();
  13         testRunner.waitUntilDone();
  14     }
  15
  16     shouldBeDefined("history.state");
  17
  18     // Create a new object.
  19     var stateObject = ["a"];
  20
  21     // Use it as the state object in a replaceState.  This clones the object.
  22     history.replaceState(stateObject, null, null);
  23
  24     shouldBeTrue("history.state === history.state");
  25
  26     // Since the actual history.state is a structured clone, it should not match our original object.
  27     shouldBeTrue("history.state !== stateObject");
  28
  29     // Now let's refetch a copy of history.state to store;
  30     stateObject = history.state;
  31
  32     // Our reference and the history.state itself should be the same.  This is now Adam's original assertion.
  33     shouldBeTrue("history.state === stateObject");
  34
  35     // Now let's do a pushstate to add a history entry.
  36     history.pushState(null, null, null);
  37
  38     // Now add a handler for the popstate event.
  39     var popStateEvent;
  40     window.onpopstate = function(e) {
  41         debug("\nInside popstate event\n");
  42         popStateEvent = e;
  43         // Our stored reference to stateObject will not match the current state object, as it is a structured clone of the history item's state object.
  44         shouldBeTrue("history.state !== stateObject");
  45         // Our stored reference to stateObject will not match the state object in this pop state event, as it is the same as history.state which is a structured clone of the history item's state object.
  46         shouldBeTrue("popStateEvent.state !== stateObject");
  47         // The event's state object and the current state object should match.
  48         shouldBeTrue("popStateEvent.state === history.state");
  49
  50         setTimeout(finishJSTest, 0);
  51     }
  52
  53     // Now let's go back to our original history entry which has a state object that we've stored a reference to already.
  54     // This will fire our popstate event handler above.
  55     window.onload = function() {
  56         history.back();
  57     };
  58 </script>
  59 </body>
  60 </html>