private static bool HandlePropertyChangedBehaviorWasCalled(ChangeArgs args)
{
var mock = new PropertyChangedMock();
var vm = ViewModelStub
.WithProperties(PropertyStub
.WithBehaviors(mock)
.Build())
.Build();
vm.GetContext().NotifyChange(args);
return(mock.PropertyChangedWasCalled);
}
public void Execute(string expectedPropertyName, Action <long> setter, Func <long> getter)
{
_callbackTriggered = 0;
_mock = new();
_mock.PropertyChanged += (sender, e) =>
{
_callbackTriggered++;
Assert.AreEqual(expectedPropertyName, e.PropertyName);
Assert.AreSame(_mock, sender);
};
Assert.AreEqual(0, getter());
Assert.AreEqual(0, _callbackTriggered);
setter(2);
Assert.AreEqual(2, getter());
Assert.AreEqual(1, _callbackTriggered);
setter(2);
Assert.AreEqual(2, getter());
Assert.AreEqual(1, _callbackTriggered);
setter(3);
Assert.AreEqual(3, getter());
Assert.AreEqual(2, _callbackTriggered);
}
public void NotifyChange_CallsHandlePropertyChangedBehaviorOnlyIfOwnPropertyHasChanged()
{
var mock = new PropertyChangedMock();
var property = PropertyStub
.WithBehaviors(mock)
.Build();
var vm = ViewModelStub
.WithProperties(property)
.Build();
var context = vm.GetContext();
var args = ChangeArgs.PropertyChanged(property, ValueStage.ValidatedValue);
context.NotifyChange(args);
Assert.IsTrue(mock.PropertyChangedWasCalled);
mock.PropertyChangedWasCalled = false;
args = ChangeArgs
.PropertyChanged(property, ValueStage.ValidatedValue)
.PrependViewModel(ViewModelStub.Build());
context.NotifyChange(args);
Assert.IsFalse(mock.PropertyChangedWasCalled);
mock.PropertyChangedWasCalled = false;
args = ChangeArgs.ValidationResultChanged(property, ValueStage.Value);
context.NotifyChange(args);
Assert.IsFalse(mock.PropertyChangedWasCalled);
mock.PropertyChangedWasCalled = false;
args = ChangeArgs.ItemsAdded(VMCollectionStub.Build(), new[] { ViewModelStub.Build() });
context.NotifyChange(args);
Assert.IsFalse(mock.PropertyChangedWasCalled);
}
