public void AddShortcuts_WhenCalled_FillsCommands() { //Arrange var vm = new MainViewModel { EventAggregator = CreateEventAggregator() }; var cmd1 = Mock.Create<ITitledCommand>(); var cmd2 = Mock.Create<ITitledCommand>(); var cmd3 = Mock.Create<ITitledCommand>(); //Act vm.AddShortcuts(new List<ITitledCommand>{cmd1, cmd2, cmd3}); //Assert Assert.AreEqual(3, vm.Commands.Count); }