diff --git a/src/tests/tasktest.cpp b/src/tests/tasktest.cpp
index ba75956..7460c30 100644
--- a/src/tests/tasktest.cpp
+++ b/src/tests/tasktest.cpp
@@ -1,116 +1,116 @@
 /*
  * Copyright (c) 2019 Alexander Potashev <aspotashev@gmail.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation; either version 2 of
  * the License or (at your option) version 3 or any later version
  * accepted by the membership of KDE e.V. (or its successor approved
  * by the membership of KDE e.V.), which shall act as a proxy
  * defined in Section 14 of version 3 of the license.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #include <QTest>
 
 #include "dialogs/historydialog.h"
 #include "model/eventsmodel.h"
 #include "model/task.h"
 #include "model/tasksmodel.h"
 #include "taskview.h"
 
 #include "helpers.h"
 
 class TaskTest : public QObject
 {
     Q_OBJECT
 
 private Q_SLOTS:
     void testProperties();
     void testRefreshTimes();
     void testDurationFromEvent();
     void testDeleteRunning();
 };
 
 void TaskTest::testProperties()
 {
     auto *taskView = createTaskView(this, false);
     QVERIFY(taskView);
 
     auto *task1 = taskView->addTask("1");
     QVERIFY(task1);
     QVERIFY(task1->isRoot());
     QCOMPARE(task1->depth(), 0);
 
     auto *task2 = taskView->addTask("2", QString(), 0, 0, QVector<int>(0, 0), task1);
     QVERIFY(task2);
     QVERIFY(!task2->isRoot());
     QCOMPARE(task2->depth(), 1);
 }
 
 void TaskTest::testRefreshTimes()
 {
     auto *taskView = createTaskView(this, false);
     QVERIFY(taskView);
 
     auto *task1 = taskView->addTask("1");
     auto *task2 = taskView->addTask("2", QString(), 0, 0, QVector<int>(0, 0), task1);
     task2->changeTime(5, taskView->storage()->eventsModel());
 
     QCOMPARE(5, task2->time());
     QCOMPARE(5, task2->sessionTime());
 
-    taskView->save();
+    QCOMPARE(taskView->storage()->save(), "");
 
     // Open saved file again
     auto *taskView2 = new TaskView();
     taskView2->load(taskView->storage()->fileUrl());
 
     taskView2->reFreshTimes();
 
     auto *task2Mirror = taskView2->storage()->tasksModel()->taskByUID(task2->uid());
     QCOMPARE(5, task2Mirror->time());
     QCOMPARE(5, task2Mirror->sessionTime());
 }
 
 void TaskTest::testDurationFromEvent()
 {
     auto *taskView = createTaskView(this, false);
     QVERIFY(taskView);
 
     auto *task = taskView->addTask("1");
     task->changeTime(1, taskView->storage()->eventsModel());
     QCOMPARE(task->time(), 1);
 
     // Simulate increment of the hour number of event in "Edit History" dialog.
     // Such editing operation loses sub-second precision.
     auto *event = taskView->storage()->eventsModel()->eventsForTask(task)[0];
     QString endDateString = event->dtEnd().addSecs(3600).toString(HistoryDialog::dateTimeFormat);
     event->setDtEnd(QDateTime::fromString(endDateString, HistoryDialog::dateTimeFormat));
 
     // Duration must become 61 minutes
     taskView->reFreshTimes();
     QCOMPARE(task->time(), 61);
 }
 
 void TaskTest::testDeleteRunning()
 {
     auto *taskView = createTaskView(this, false);
     QVERIFY(taskView);
 
     auto *task = taskView->addTask("1");
     taskView->startTimerForNow(task);
 
     taskView->deleteTaskBatch(task);
 }
 
 QTEST_MAIN(TaskTest)
 
 #include "tasktest.moc"