public void TestSelect()
{
int eventCount = 0;
viewModel.PropertyChanged += (sender, e) => eventCount++;
viewModel.Select(model [0]);
Assert.AreEqual(1, eventCount);
Assert.AreEqual(1, viewModel.Selection.Count);
Assert.AreSame(model [0], viewModel.Selection [0].Model);
viewModel.Select(viewModel.ViewModels [1]);
Assert.AreEqual(2, eventCount);
Assert.AreEqual(1, viewModel.Selection.Count);
Assert.AreSame(viewModel.ViewModels [1], viewModel.Selection [0]);
}
