public void GetValue_CallingGetValueWithinValueInitializer_DoesNotCallValueInitializerAgain()
{
PropertyStub <object> property = null;
Func <IBehaviorContext, object> provideValueFunction = ctx => {
return(new Object());
};
var behavior = new TestBehavior(provideValueFunction);
var valueInitializerWasAlreadyInvoked = false;
Action <IBehaviorContext> initializeValueAction = ctx => {
Assert.IsFalse(valueInitializerWasAlreadyInvoked);
valueInitializerWasAlreadyInvoked = true;
property.Behaviors.GetValueNext <object>(ctx);
};
property = PropertyStub
.WithBehaviors(behavior, new TestValueInitializerBehavior(initializeValueAction))
.Build();
var context = ViewModelStub
.WithProperties(property)
.BuildContext();
behavior.GetValue(context);
Assert.IsTrue(valueInitializerWasAlreadyInvoked);
}
public void GetValue_CallingGetValueWithinProvideValue_ThrowsException()
{
PropertyStub <object> property = null;
var provideValueWasAlreadyCalled = false;
Func <IBehaviorContext, object> provideValueFunction = ctx => {
Assert.IsFalse(provideValueWasAlreadyCalled);
provideValueWasAlreadyCalled = true;
property.Behaviors.GetValueNext <object>(ctx);
return(new Object());
};
var behavior = new TestBehavior(provideValueFunction);
property = PropertyStub
.WithBehaviors(behavior)
.Build();
var context = ViewModelStub
.WithProperties(property)
.BuildContext();
AssertHelper.Throws <InvalidOperationException>(() =>
behavior.GetValue(context)
).WithMessage(EViewModels.ValueAccessedWithinProvideValue);
Assert.IsTrue(provideValueWasAlreadyCalled);
}
private void SetupForProperty(ValueStage stage)
{
var behavior = new TestBehavior(stage);
Property = PropertyStub.WithBehaviors(behavior).Of <object>();
VM = ViewModelStub.WithProperties(Property).Build();
Manager = behavior.Manager;
Context = new BehaviorContextStub(VM);
}
public void Setup()
{
Behavior = new CommandAccessorMock();
OwnerProperty = PropertyStub
.WithBehaviors(Behavior)
.Build();
OwnerVM = ViewModelStub
.WithProperties(OwnerProperty)
.Build();
}
public void Setup()
{
Behavior = new RefreshablePropertyChangedNotifierBehavior <object>();
Property = PropertyStub
.WithBehaviors(Behavior)
.Build();
Context = ViewModelStub
.WithProperties(Property)
.BuildContext();
}
public void Setup()
{
ValueAccessor = new ValueAccessorStub <ChildVM>();
Behavior = new DelegateViewModelAccessorBehavior <ChildVM>();
Property = PropertyStub
.WithBehaviors(Behavior, ValueAccessor)
.Build();
Context = ViewModelStub
.WithProperties(Property)
.BuildContext();
}
public void Setup()
{
Handler = new HandlerMock();
OwnerProperty = PropertyStub
.WithBehaviors(Handler)
.Build();
OwnerVM = ViewModelStub
.WithProperties(OwnerProperty)
.Build();
Command = new ViewModelCommand(OwnerVM, OwnerProperty);
}
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 Setup()
{
ValidationResult = CreateValidationResult("Error");
Behavior = new TestValidationSourceBehavior(ValidationStep.Value);
Property = PropertyStub.WithBehaviors(Behavior).Of <string>();
Executor = new ValidationExecutorStub();
var vm = ViewModelStub
.WithProperties(Property)
.WithBehaviors(Executor)
.Build();
Context = new BehaviorContextStub(vm);
}
protected void SetupFixture(
ICollectionChangeHandlerBehavior <TItemVM> behavior,
params IBehavior[] additionalBehaviors
)
{
Behavior = behavior;
CollectionOwner = ViewModelStub
.WithProperties(PropertyStub
.WithBehaviors(behavior)
.WithBehaviors(additionalBehaviors)
.Build())
.Build();
Context = BehaviorContextStub
.DecoratingContextOf(CollectionOwner)
.Build();
}
public void Setup()
{
Behavior = new ValidationResultAggregatorBehavior();
var propertyBehavior = new ValidationResultProviderStub {
ReturnedResult = PropertyResult,
ReturnedDescendantsResult = DescendantResult
};
var viewModelBehavior = new ValidationResultProviderStub {
ReturnedResult = ViewModelResult
};
var property = PropertyStub
.WithBehaviors(propertyBehavior)
.Of <ViewModelStub>();
Context = ViewModelStub
.WithProperties(property)
.WithBehaviors(Behavior, viewModelBehavior)
.BuildContext();
}
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);
}
protected BehaviorContextStub CreateBehaviorContextFor(IVMPropertyDescriptor configuredProperty)
{
return(ViewModelStub
.WithProperties(configuredProperty)
.BuildContext());
}