Bug 1248550 - Part 7: Improve the test for idle maintenance to trigger interference between database maintenance and normal database operations; r=khuey

dom/indexedDB/test/unit/test_idle_maintenance.js

@@ -35,6 +35,35 @@ function testSteps()
   let quotaManagerService = Cc["@mozilla.org/dom/quota-manager-service;1"].
                             getService(Ci.nsIQuotaManagerService);
 
+  // Keep at least one database open.
+  let req = indexedDB.open("foo-a", 1);
+  req.onerror = errorHandler;
+  req.onsuccess = grabEventAndContinueHandler;
+  let event = yield undefined;
+
+  let dbA = event.target.result;
+
+  // Keep at least one factory operation alive by deleting a database that is
+  // stil open.
+  req = indexedDB.open("foo-b", 1);
+  req.onerror = errorHandler;
+  req.onsuccess = grabEventAndContinueHandler;
+  event = yield undefined;
+
+  let dbB = event.target.result;
+
+  indexedDB.deleteDatabase("foo-b");
+
+  // Create a database which we will later try to open while maintenance is
+  // performed.
+  req = indexedDB.open("foo-c", 1);
+  req.onerror = errorHandler;
+  req.onsuccess = grabEventAndContinueHandler;
+  event = yield undefined;
+
+  let dbC = event.target.result;
+  dbC.close();
+
   let dbCount = 0;
 
   for (let persistence of ["persistent", "temporary", "default"]) {
@@ -104,6 +133,13 @@ function testSteps()
   let observer = quotaManagerService.QueryInterface(Ci.nsIObserver);
   observer.observe(null, "idle-daily", "");
 
+  info("Opening database while maintenance is performed");
+
+  req = indexedDB.open("foo-c", 1);
+  req.onerror = errorHandler;
+  req.onsuccess = grabEventAndContinueHandler;
+  yield undefined;
+
   info("Waiting for maintenance to start");
 
   // This time is totally arbitrary. Most likely directory scanning will have