[IndexedDB] Add Observer Tests

third_party/WebKit/LayoutTests/storage/indexeddb/resources/observer-changes.js

+if (this.importScripts) {
+    importScripts('../../../resources/testharness.js');
+    importScripts('../../../resources/generic-idb-operations.js');
+}
+
+(function() {
+  var pathname = location.pathname + ' - ' + 'changes';
+  var callback_count = Array(6).fill(0);
+  var dbname = [];
+  for(var i = 1; i <= 6; i++)
+      dbname.push(pathname + i.toString());
+
+  callback_count.fill(0);
+  var putOps = [{type: 'put', key : 1, value: 1 },
+                {type: 'put', key : 2, value: 2 },
+                {type: 'put', key : 3, value: 3 },];
+  var deleteOps = [ {type: 'kDelete', key: {lower : 1, upper : 2} }, {type: 'kDelete', key: {lower : 3, upper : 3} }];
+  var addOps = [ {type: 'add', key : 3, value: 3 } ];
+  var clearOps = [ {type: 'clear'} ];
+  var put_records = { 'store': putOps };
+
+  var ops0 = putOps.concat(deleteOps, addOps, clearOps);
+  var records0 = { 'store' : ops0 };
+  var observed_records0 = { 'store' : ops0 };
+  var observed_changes0 = { dbName: dbname[0], records: observed_records0 };
+
+  function callback0(changes) {
+    compareChanges(changes, observed_changes0);
+    callback_count[0]++;
+  };
+
+  async_test(function(t) {
+    var openRequest = indexedDB.open(dbname[0]);
+    // TODO(palakj): operationType should be 'delete' instead of 'kDelete', once fixed. Issue crbug.com/609934.
+    var obs = new IDBObserver(t.step_func(callback0), { operationTypes: [ 'clear', 'put', 'add', 'kDelete' ] });
+    openRequest.onupgradeneeded = t.step_func(function() {
+      createDatabase(openRequest.result, ['store']);
+    });
+    openRequest.onsuccess = t.step_func(function() {

[cmumford, 2016/07/21 15:00:55]

Add onerror to avoid having to wait for test to timeout.

+      var db = openRequest.result;
+      var tx1 = db.transaction('store', 'readwrite');
+      var tx2 = db.transaction('store', 'readwrite');
+      obs.observe(db, tx1);
+      operateOnTx(tx2, records0);
+
+      tx1.oncomplete = t.step_func(function() {
+        countCallbacks(callback_count[0], 0);
+      });
+      tx1.onerror = t.unreached_func('transaction 1 should not fail')
+      tx2.oncomplete = t.step_func(function() {
+        countCallbacks(callback_count[0], 1);
+        t.done();
+      });
+      tx2.onerror = t.unreached_func('transaction 2 should not fail')
+    });
+  }, 'Observer: Record all operations');
+
+  var ops1 = putOps.concat(deleteOps, addOps, clearOps);
+  var records1 = { 'store' : ops1 };
+  var observed_ops1 = putOps.concat(clearOps);
+  var observed_records1 = { 'store' : observed_ops1 };
+  var observed_changes1 = { dbName: dbname[1], records: observed_records1 };
+  
+  function callback1(changes) {
+    compareChanges(changes, observed_changes1);
+    callback_count[1]++;
+  };
+
+  async_test(function(t) {
+    var openRequest = indexedDB.open(dbname[1]);
+    var cnt2 = 0;
+    var obs1 = new IDBObserver(t.step_func(callback1), { operationTypes: ['clear', 'put'] });
+    var obs2 = new IDBObserver(t.step_func(function(){
+      cnt2++;
+    }));
+
+    openRequest.onupgradeneeded = t.step_func(function() {
+      createDatabase(openRequest.result, ['store']);

[cmumford, 2016/07/21 15:00:55]

I know |createDatabase| landed in a prior CL, but it has an odd name. It doesn't
actually create a database. Maybe "createObjectStores" or "createStores".

+    });
+    openRequest.onsuccess = t.step_func(function() {
+      var db = openRequest.result;
+      var tx1 = db.transaction('store', 'readwrite');
+      var tx2 = db.transaction('store', 'readwrite');
+      obs1.observe(db, tx1);
+      obs2.observe(db, tx1);
+      operateOnTx(tx2, records1);
+
+      tx1.oncomplete = t.step_func(function() {
+        countCallbacks(callback_count[1], 0);
+        countCallbacks(cnt2, 0);
+
+      });
+      tx2.oncomplete = t.step_func(function() {
+        countCallbacks(callback_count[1], 1);
+        countCallbacks(cnt2, 0);
+        t.done();
+      });
+    });
+  }, 'Observer: Operation type filtering');
+
+  var records2 = { 'store' : putOps, 'store2' : addOps };
+  var observed_records2 = { 'store' : putOps };
+  var observed_changes2 = { dbName: dbname[2], records: observed_records2 };
+
+  function callback2(changes){
+    compareChanges(changes, observed_changes2);
+    callback_count[2]++;
+  }
+  var stores = ['store', 'store2']
+
+  async_test(function(t) {
+    var openRequest = indexedDB.open(dbname[2]);
+    var obs = new IDBObserver(t.step_func(callback2), { operationTypes: ['put', 'add'] });
+
+    openRequest.onupgradeneeded = t.step_func(function() {
+      createDatabase(openRequest.result, stores);
+    });
+    openRequest.onsuccess = t.step_func(function() {
+      var db = openRequest.result;
+      var tx1 = db.transaction(stores[0], 'readwrite');
+      var tx2 = db.transaction(stores, 'readwrite');
+      obs.observe(db, tx1);
+      operateOnTx(tx2, records2);
+
+      tx1.oncomplete = t.step_func(function() {
+        countCallbacks(callback_count[2], 0);
+      });
+      tx2.oncomplete = t.step_func(function() {
+        countCallbacks(callback_count[2], 1);
+        t.done();
+      });
+    });
+  }, 'Observer: ObjectStore filtering');
+
+  var records3 = { 'store' : putOps };
+  var put_records = { 'store' : putOps };
+  var observed_changes3 = { dbName: dbname[3], records: put_records };
+
+  function callback3(changes){
+    compareChanges(changes, observed_changes3);
+    callback_count[3]++;
+  }
+  async_test(function(t) {
+    var openRequest = indexedDB.open(dbname[3]);
+    var obs = new IDBObserver(t.step_func(callback3), { operationTypes: ['put'] });
+
+    openRequest.onupgradeneeded = t.step_func(function() {
+      createDatabase(openRequest.result, ['store']);
+    });
+    openRequest.onsuccess = t.step_func(function() {
+      var db = openRequest.result;
+      var tx1 = db.transaction('store', 'readwrite');
+      // External transaction on same database connection.
+      operateOnDb(db, records3);
+      var tx2 = db.transaction('store', 'readwrite');
+      operateOnTx(tx2, records3);
+      obs.observe(db, tx1);
+
+      tx1.oncomplete = t.step_func(function() {
+        countCallbacks(callback_count[3], 0);
+      });
+      tx2.oncomplete = t.step_func(function() {
+        countCallbacks(callback_count[3], 2);
+        t.done();
+      });
+      tx2.onerror = t.unreached_func('tx should not have error');
+    });
+  }, 'Observer : Records external transaction');
+
+  var observed_changes4 = { dbName: dbname[4], records: put_records };
+
+  function callback4(changes){
+    compareChanges(changes, observed_changes4);
+    callback_count[4]++;
+  }
+
+  async_test(function(t) {
+    var openRequest = indexedDB.open(dbname[4]);
+    var obs = new IDBObserver(t.step_func(callback4), { operationTypes: ['put'] });
+
+    openRequest.onupgradeneeded = t.step_func(function() {
+      createDatabase(openRequest.result, ['store']);
+    });
+    openRequest.onsuccess = t.step_func(function() {
+      var db = openRequest.result;
+      var tx1 = db.transaction('store', 'readwrite');
+      obs.observe(db, tx1);
+      tx1.oncomplete = t.step_func(function() {
+        countCallbacks(callback_count[4], 0);
+      });
+      tx1.onerror = t.unreached_func('transaction should not fail');
+ 
+      var openRequest2 = indexedDB.open(dbname[4]);
+      openRequest2.onsuccess = t.step_func(function(){
+         var db2 = openRequest2.result;
+         var tx2 = db2.transaction('store', 'readwrite');
+         operateOnTx(tx2, put_records);
+         tx2.oncomplete = function(){
+           countCallbacks(callback_count[4], 1);
+           t.done();
+         }
+         tx2.onerror = t.unreached_func('transaction should not fail');
+      });
+    });
+  }, 'Observer : Record changes on another connection');
+
+  var records5_2 = {'store2' : putOps}
+  var observed_changes5_1 = { dbName: dbname[5], records: put_records };
+  var observed_changes5_2 = { dbName: dbname[5], records: records5_2 };
+
+  function callback5(changes){
+    assert_true(callback_count[5] < 2);
+    if(callback_count[5] == 0)
+      compareChanges(changes, observed_changes5_1);
+    else
+      compareChanges(changes, observed_changes5_2);
+    callback_count[5]++;
+  }
+
+  async_test(function(t) {
+    var openRequest = indexedDB.open(dbname[5]);
+    var obs = new IDBObserver(t.step_func(callback5), { operationTypes: ['put'] });
+
+    openRequest.onupgradeneeded = t.step_func(function() {
+      createDatabase(openRequest.result, [ 'store', 'store2' ]);
+    });
+    openRequest.onsuccess = t.step_func(function() {
+      var db = openRequest.result;
+      var tx1 = db.transaction([ 'store', 'store2'], 'readwrite');
+      var tx2 = db.transaction('store', 'readwrite');
+
+      obs.observe(db, tx1);
+      tx1.objectStore('store').get(1);
+      t.step_func(operateOnTx(tx2, put_records));
+      
+      tx1.oncomplete = t.step_func(function() {
+        countCallbacks(callback_count[5], 0);
+      });
+      tx1.onerror = t.unreached_func('transaction should not fail');
+      tx2.oncomplete = t.step_func(function(){
+        countCallbacks(callback_count[5], 1);
+        var tx3 = db.transaction('store2', 'readwrite');
+        t.step_func(operateOnTx(tx3, records5_2));
+
+        tx3.oncomplete = t.step_func(function(){
+          countCallbacks(callback_count[5], 2);
+          t.done();
+        });
+        tx3.onerror = t.unreached_func('transaction should not fail');
+      });
+      tx2.onerror = t.unreached_func('transaction should not fail');
+
+    });
+  }, 'Observer : Record multiple transactions');
+
+  done();
+})();