third_party/WebKit/LayoutTests/storage/indexeddb/prefetch-invalidation.html

   1 <!DOCTYPE html>
   2 <script src="../../resources/js-test.js"></script>
   3 <script src="resources/shared.js"></script>
   4 <script>
   5
   6 description("Ensure IndexedDB's write operations invalidate cursor prefetch caches");
   7
   8 indexedDBTest(prepareDatabase, onOpenSuccess);
   9 function prepareDatabase(evt)
  10 {
  11     preamble(evt);
  12     evalAndLog("db = event.target.result");
  13     evalAndLog("store = db.createObjectStore('store')");
  14 }
  15
  16 function onOpenSuccess(evt)
  17 {
  18     preamble(evt);
  19     evalAndLog("db = event.target.result");
  20
  21     var steps = [
  22         deleteRange,
  23         clearStore
  24     ];
  25
  26     (function nextStep() {
  27         var step = steps.shift();
  28         if (step) {
  29             doPrefetchInvalidationTest(step, nextStep);
  30         } else {
  31             finishJSTest();
  32             return;
  33         }
  34     }());
  35 }
  36
  37 function doPrefetchInvalidationTest(operation, callback)
  38 {
  39     debug("");
  40     debug("-------------------------------------------");
  41     preamble();
  42     evalAndLog("store = db.transaction('store', 'readwrite').objectStore('store')");
  43     debug("Populate the store with 200 records.");
  44     for (var i = 0; i < 200; ++i)
  45         store.put(i, i);
  46     evalAndLog("cursorRequest = store.openCursor()");
  47     continue100Times(operation, callback);
  48 }
  49
  50 function continue100Times(operation, callback)
  51 {
  52     preamble();
  53     var count = 0;
  54
  55     cursorRequest.onsuccess = function() {
  56         var cursor = cursorRequest.result;
  57         ++count;
  58         if (count < 100) {
  59             cursor.continue();
  60             return;
  61         }
  62         shouldBeNonNull("cursorRequest.result");
  63         doOperationAndContinue(operation, callback);
  64     }
  65 }
  66
  67 function doOperationAndContinue(operation, callback)
  68 {
  69     preamble();
  70     operation();
  71     evalAndLog("cursor = cursorRequest.result");
  72     evalAndLog("cursor.continue()")
  73     cursorRequest.onsuccess = function onContinueSuccess() {
  74         preamble();
  75         shouldBeNull("cursorRequest.result");
  76         callback();
  77     };
  78 }
  79
  80 function deleteRange()
  81 {
  82     return evalAndLog("store.delete(IDBKeyRange.bound(-Infinity, +Infinity))");
  83 }
  84
  85 function clearStore()
  86 {
  87     return evalAndLog("store.clear()");
  88 }
  89
  90 </script>