LayoutTests/perf/table-rows-length-caching.html

   1 <!DOCTYPE html>
   2 <html>
   3 <body>
   4 <div id='sandbox'></div>
   5 <div id="console"></div>
   6 <script src="../resources/magnitude-perf.js"></script>
   7 <script>
   8
   9 if (window.layoutTestController)
  10     layoutTestController.dumpAsText();
  11
  12 var table;
  13 var sandbox = document.getElementById('sandbox');
  14
  15 // Check that table.rows.length is properly cached.
  16
  17 function setupTableRows(magnitude)
  18 {
  19     if (sandbox.firstChild)
  20         sandbox.removeChild(sandbox.firstChild);
  21     table = document.createElement('table');
  22
  23     for (var i = 0; i < magnitude; ++i) {
  24         var tr = document.createElement('tr');
  25         table.appendChild(tr);
  26     }
  27     sandbox.appendChild(table);
  28
  29     // Make sure we have cached the length before testing!
  30     table.rows.length;
  31 }
  32
  33 function testTableRows(magnitude)
  34 {
  35     table.rows.length;
  36 }
  37
  38 Magnitude.description('Tests that check that table.row.length is properly cached');
  39 Magnitude.run(setupTableRows, testTableRows, Magnitude.CONSTANT);
  40 sandbox.removeChild(sandbox.firstChild);
  41 </script>
  42 </body>
  43 </html>