third_party/WebKit/LayoutTests/netinfo/unregister-during-event.html

   1 <!DOCTYPE html>
   2 <head>
   3 <script src="../resources/js-test.js"></script>
   4 <script src="resources/netinfo_common.js"></script>
   5 </head>
   6 <body>
   7 <script>
   8
   9 description("Tests that it's okay to unregister the event listener while handling the event.");
  10
  11 shouldBe('typeof window.internals.observeGC', '"function"',
  12 'this test requires window.internals');
  13
  14 var otherHandler = function(e) {
  15     shouldBe('connection.type', 'initialType');
  16     shouldBe('connection.downlinkMax', 'initialDownlinkMax');
  17
  18     finishJSTest();
  19 };
  20
  21 var handler = function(e) {
  22     shouldBe('connection.type', 'newConnectionType');
  23     shouldBe('connection.downlinkMax', 'newDownlinkMax');
  24     connection.removeEventListener('change', handler);
  25     connection.addEventListener('change', otherHandler);
  26     internals.setNetworkConnectionInfo(initialType, initialDownlinkMax);
  27 };
  28
  29 connection.addEventListener('change', handler);
  30 internals.setNetworkConnectionInfo(newConnectionType, newDownlinkMax);
  31
  32 </script>
  33 </body>
  34 </html>