public void SelectDashboard_WhenCalled_SelectsFirstWindow()
{
//Arrange
var vm = new MainViewModel {EventAggregator = CreateEventAggregator()};
var window1 = Mock.Create<ITopLevelWindow>(Behavior.Loose);
var window2 = Mock.Create<ITopLevelWindow>(Behavior.Loose);
var window3 = Mock.Create<ITopLevelWindow>(Behavior.Loose);
vm.Windows.Add(window1);
vm.Windows.Add(window2);
vm.Windows.Add(window3);
vm.SelectedWindow = window2;
//Act
vm.SelectDashboard();
//Assert
Assert.AreSame(window1, vm.SelectedWindow);
}