public void ModelChangesFlowToProperties()
{
// Test ViewModel returns current value from model
Email em = new Email { Address = "EMAIL" };
EmailViewModel vm = new EmailViewModel(em);
em.Address = "NEW_EMAIL";
Assert.AreEqual("NEW_EMAIL", vm.Address, "Address property is not fetching the value from the model.");
}
public void PropertyGetAndSet()
{
// Test initial properties are surfaced in ViewModel
Email em = new Email { Address = "EMAIL" };
EmailViewModel vm = new EmailViewModel(em);
Assert.AreEqual(em, vm.Model, "Bound object property did not return object from model.");
Assert.AreEqual(em.ValidUsageValues, vm.ValidUsageValues, "ValidUsageValues property did not return value from model.");
Assert.AreEqual("EMAIL", vm.Address, "Address 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.Address = "NEW_EMAIL";
Assert.AreEqual("Address", lastProperty, "Setting Address property did not raise correct PropertyChanged event.");
Assert.AreEqual("NEW_EMAIL", em.Address, "Setting Address property did not update model.");
}
public void PropertyGetAndSet()
{
// 测试初始属性显示在 ViewModel 中
Email em = new Email { Address = "EMAIL" };
EmailViewModel vm = new EmailViewModel(em);
Assert.AreEqual(em, vm.Model, "Bound object property did not return object from model.");
Assert.AreEqual(em.ValidUsageValues, vm.ValidUsageValues, "ValidUsageValues property did not return value from model.");
Assert.AreEqual("EMAIL", vm.Address, "Address property did not return value from model.");
// 更改属性的测试将更新模型并引发 PropertyChanged
string lastProperty;
vm.PropertyChanged += (sender, e) => { lastProperty = e.PropertyName; };
lastProperty = null;
vm.Address = "NEW_EMAIL";
Assert.AreEqual("Address", lastProperty, "Setting Address property did not raise correct PropertyChanged event.");
Assert.AreEqual("NEW_EMAIL", em.Address, "Setting Address property did not update model.");
}