[IndexedDB] Propogating changes to observers : Renderer

third_party/WebKit/LayoutTests/storage/indexeddb/resources/generic-idb-operations.js

+if (this.importScripts) {
+    importScripts('../../../resources/testharness.js');
+}
+
+function compareChanges(actual, expected) {
+  assert_equals(actual.database.name, expected.dbName, 'The change record database should be the same as the database being acted on');
+  assert_equals(actual.records.size, expected.records.size, 'Incorrect number of objectStores recorded by observer');
+  expected.records.forEach(function(obsv, key) {
+    assert_true(actual.records.has(key));
+    var actual_obsv = actual.records.get(key);
+    assert_equals(actual_obsv.length, obsv.length, 'Number of observations recorded for objectStore '+key+ 'should match observed operations');
+    for (i in obsv)
+      compareObservations(actual_obsv[i], obsv[i]);
+  });
+}
+
+function compareObservations(actual, expected) {
+  assert_equals(actual.type, expected.type);
+  if (actual.type == 'clear') {
+    assert_equals(actual.key, undefined, 'clear operation has no key');
+    assert_equals(actual.value, null, 'clear operation has no value');
+    return;
+  }
+  // TODO(palakj): Type should return 'delete' instead of 'kDelete', once fixed.
+  if (actual.type == 'kDelete') {
+    assert_equals(actual.key.lower, expected.key.lower, 'Observed operation key lower bound should match operation performed');
+    assert_equals(actual.key.upper, expected.key.upper, 'Observed operation key upper bound should match operation performed');
+    assert_equals(actual.key.lower_open, expected.key.lower_open, 'Observed operation key lower open should match operation performed');
+    assert_equals(actual.key.upper_open, expected.key.upper_open, 'Observed operation key upper open should match operation performed');
+    // TODO(palakj): Value needs to be updated, once returned correctly.
+    assert_equals(actual.value, null, 'Delete operation has no value');
+    return;
+  }
+  assert_equals(actual.key.lower, expected.key, 'Observed operation key lower bound should match operation performed');
+  assert_equals(actual.key.upper, expected.key, 'Observed operation key upper bound should match operation performed');
+  // TODO(palakj): Value needs to be updated, once returned correctly.
+  assert_equals(actual.value, null, 'Put/Add operation value does not match');
+}
+
+function countCallbacks(actual, expected){
+  for(var i in actual){
+    assert_equals(actual[i], expected[i], 'Number of callbacks fired for observer '+(i+1) + ' should match transactions it observed')
+  }
+}
+
+function createDatabase(db, stores) {
+  for (i in stores)
+    db.createObjectStore(stores[i]);
+}
+
+function operateOnDbName(dbName, stores, operations) {
+  var openRequest = indexedDB.open(dbname);
+  openRequest.onsuccess = function() {
+    var db = openRequest.result;
+    operateOnDb(db, stores, operations);
+  }
+}
+
+function operateOnDb(db, stores, operations) {
+  var tx  = db.transaction(stores, 'readwrite');
+  for(var i in stores){
+    var store = tx.objectStore(stores[i]);
+    operateOnStore(store, operations);
+  }
+}
+
+function operateOnStore(store, operations) {
+  for (i in operations ) {
+    var op = operations[i];
+    assert_in_array(op.type, ['put', 'add', 'delete', 'clear', 'get'], 'Operation type not defined');
+    if (op.type == 'put')
+      store.put(op.value, op.key);
+    else if (op.type == 'add')
+      store.add(op.value, op.key);
+    else if (op.type == 'delete')
+      store.delete(IDBKeyRange.bound(op.key.lower, op.key.upper));
+    else if (op.type == 'clear')
+      store.clear();
+    else
+      store.get(op.key)
+  }
+}