public void ModelChangesFlowToProperties()
{
// Test ViewModel returns current value from model
Employee em = new Employee
{
Title = "Title",
FirstName = "FirstName",
LastName = "LastName",
Position = "Position",
BirthDate = new DateTime(2000, 1, 1),
HireDate = new DateTime(2000, 2, 2)
};
BasicEmployeeViewModel vm = new BasicEmployeeViewModel(em);
em.Title = "NEW_Title";
Assert.AreEqual("NEW_Title", vm.Title, "Title property is not fetching the value from the model.");
em.FirstName = "NEW_FirstName";
Assert.AreEqual("NEW_FirstName", vm.FirstName, "FirstName property is not fetching the value from the model.");
em.LastName = "NEW_LastName";
Assert.AreEqual("NEW_LastName", vm.LastName, "LastName property is not fetching the value from the model.");
em.Position = "NEW_Position";
Assert.AreEqual("NEW_Position", vm.Position, "Position property is not fetching the value from the model.");
em.BirthDate = new DateTime(2001, 1, 1);
Assert.AreEqual(new DateTime(2001, 1, 1), vm.BirthDate, "BirthDate property is not fetching the value from the model.");
em.HireDate = new DateTime(2001, 2, 2);
Assert.AreEqual(new DateTime(2001, 2, 2), vm.HireDate, "HireDate property is not fetching the value from the model.");
em.TerminationDate = new DateTime(2001, 3, 3);
Assert.AreEqual(new DateTime(2001, 3, 3), vm.TerminationDate, "TerminationDate property is not fetching the value from the model.");
}
public void PropertyGetAndSet()
{
// Test initial properties are surfaced in ViewModel
Employee em = new Employee
{
Title = "Title",
FirstName = "FirstName",
LastName = "LastName",
Position = "Position",
BirthDate = new DateTime(2000, 1, 1),
HireDate = new DateTime(2000, 2, 2)
};
BasicEmployeeViewModel vm = new BasicEmployeeViewModel(em);
Assert.AreEqual(em, vm.Model, "Bound object property did not return object from model.");
Assert.AreEqual("Title", vm.Title, "Title property did not return value from model.");
Assert.AreEqual("FirstName", vm.FirstName, "FirstName property did not return value from model.");
Assert.AreEqual("LastName", vm.LastName, "LastName property did not return value from model.");
Assert.AreEqual("Position", vm.Position, "Position property did not return value from model.");
Assert.AreEqual(new DateTime(2000, 1, 1), vm.BirthDate, "BirthDate property did not return value from model.");
Assert.AreEqual(new DateTime(2000, 2, 2), vm.HireDate, "HireDate property did not return value from model.");
Assert.AreEqual(null, vm.TerminationDate, "TerminationDate property did not return value from model.");
// Test changing properties updates Model and raises PropertyChanged
string lastProperty;
vm.PropertyChanged += (sender, e) => { lastProperty = e.PropertyName; };
lastProperty = null;
vm.Title = "NEW_Title";
Assert.AreEqual("Title", lastProperty, "Setting Title property did not raise correct PropertyChanged event.");
Assert.AreEqual("NEW_Title", em.Title, "Setting Title property did not update model.");
lastProperty = null;
vm.FirstName = "NEW_FirstName";
Assert.AreEqual("FirstName", lastProperty, "Setting FirstName property did not raise correct PropertyChanged event.");
Assert.AreEqual("NEW_FirstName", em.FirstName, "Setting FirstName property did not update model.");
lastProperty = null;
vm.LastName = "NEW_LastName";
Assert.AreEqual("LastName", lastProperty, "Setting LastName property did not raise correct PropertyChanged event.");
Assert.AreEqual("NEW_LastName", em.LastName, "Setting LastName property did not update model.");
lastProperty = null;
vm.Position = "NEW_Position";
Assert.AreEqual("Position", lastProperty, "Setting Position property did not raise correct PropertyChanged event.");
Assert.AreEqual("NEW_Position", em.Position, "Setting Position property did not update model.");
lastProperty = null;
vm.BirthDate = new DateTime(2001, 1, 1);
Assert.AreEqual("BirthDate", lastProperty, "Setting BirthDate property did not raise correct PropertyChanged event.");
Assert.AreEqual(new DateTime(2001, 1, 1), em.BirthDate, "Setting BirthDate property did not update model.");
lastProperty = null;
vm.HireDate = new DateTime(2001, 2, 2);
Assert.AreEqual("HireDate", lastProperty, "Setting HireDate property did not raise correct PropertyChanged event.");
Assert.AreEqual(new DateTime(2001, 2, 2), em.HireDate, "Setting HireDate property did not update model.");
lastProperty = null;
vm.TerminationDate = new DateTime(2001, 3, 3);
Assert.AreEqual("TerminationDate", lastProperty, "Setting TerminationDate property did not raise correct PropertyChanged event.");
Assert.AreEqual(new DateTime(2001, 3, 3), em.TerminationDate, "Setting TerminationDate property did not update model.");
}