public void TestSaveException()
        {
            //arrange
            var exceptionMessage = "exceptionMessage";

            _updateManagerMock.Setup(it => it.Save(It.IsAny <IDbSource>())).Throws(new Exception(exceptionMessage));

            //act
            _targetUpdateManagerAggregatorDbSource.Save();

            //assert
            Assert.AreEqual(exceptionMessage, _targetUpdateManagerAggregatorDbSource.TestMessage);
            Assert.IsTrue(_targetUpdateManagerAggregatorDbSource.TestFailed);
            Assert.IsFalse(_targetUpdateManagerAggregatorDbSource.TestPassed);
        }