public void TestCtor()
        {
            var dataSource = _dataSources.AddFile(@"F:\logs\foo.log");

            _settings.DataSources.SelectedItem = dataSource.Id;

            _mainWindow = new MainWindowViewModel(_services,
                                                  _settings,
                                                  _dataSources,
                                                  _quickFilters,
                                                  _actionCenter,
                                                  _updater.Object);

            _mainWindow.WindowTitle.Should().Be(string.Format(@"{0} - foo.log", Constants.MainWindowTitle));
            _mainWindow.WindowTitleSuffix.Should().Be(@"F:\logs\foo.log");
        }