[IndexedDB] Add Observer Tests

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');
-  for (var key in expected.records) {
+  var stores = Object.keys(expected.records);
+  assert_equals(actual.records.size, stores.length, 'Incorrect number of objectStores recorded by observer');
+
+  for (var i in stores) {
+    var key = stores[i];
     assert_true(actual.records.has(key));
-    var actual_observation = actual.records.get(key);
-    var expected_observation = expected.records[key];
-    assert_equals(actual_observation.length, expected_observation.length, 'Number of observations recorded for objectStore '+key+ ' should match observed operations');
-    for (var i in expected_observation)
-      compareObservations(actual_observation[i], expected_observation[i]);
+    var actual_obsv = actual.records.get(key);
+    var expected_obsv = expected.records[key];
+    assert_equals(actual_obsv.length, expected_obsv.length, 'Number of observations recorded for objectStore '+ key + ' should match observed operations');
+    for (var j in expected_obsv)
+      compareObservations(actual_obsv[j], expected_obsv[j]);
   }
 }
 
 function compareObservations(actual, expected) {
   assert_equals(actual.type, expected.type);
+  assert_not_equals(actual.type, 'kDelete');
   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. Issue crbug.com/609934.
-  if (actual.type == 'kDelete') {
+  if (actual.type == 'delete') {
     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. Issue crbug.com/609934.
+    // TODO(dmurph): Value needs to be updated, once returned correctly. Issue crbug.com/609934.
     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. Issue crbug.com/609934.
-  assert_equals(actual.value, null, 'Put/Add operation value should be nil');
+  // TODO(dmurph): Value needs to be updated, once returned correctly. Issue crbug.com/609934.
+  assert_equals(actual.value, null, 'Put/Add operation value does not match');
 }
 
 function countCallbacks(actual, expected) {
   assert_equals(actual, expected, 'Number of callbacks fired for observer should match number of transactions it observed')
 }
-
-function createDatabase(db, stores) {
-  for (var i in stores)
-    db.createObjectStore(stores[i]);
-}
-
-function operateOnStore(store, operations) {
-  for (var 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)
-  }
-}