public void OneWayBindingTest()
{
ObservableNode sourceRoot = new ObservableNode();
ObservableNode source = new ObservableNode {
Value = 1
};
DependencyObjectNode target = new DependencyObjectNode();
int sourcePropertyChangedCount = 0;
int targetPropertyChangedCount = 0;
source.PropertyChanged += (sender, e) => sourcePropertyChangedCount++;
target.PropertyChanged += (sender, e) => targetPropertyChangedCount++;
ConversionCounter conversionCounter = new ConversionCounter();
Binding binding = new Binding {
Source = sourceRoot, Path = PropertyPath.Parse("Child.Value"), Mode = BindingMode.OneWay, Converter = conversionCounter
};
target.SetValue(DependencyObjectNode.ValueProperty, binding);
Assert.AreEqual(0, target.Value_ClrWrapper);
Assert.AreEqual(0, conversionCounter.ConvertedCount);
Assert.AreEqual(0, conversionCounter.ConvertedBackCount);
sourceRoot.Child = source;
Assert.AreEqual(1, target.Value_ClrWrapper);
Assert.AreEqual(1, targetPropertyChangedCount);
Assert.AreEqual(1, conversionCounter.ConvertedCount);
Assert.AreEqual(0, conversionCounter.ConvertedBackCount);
source.Value = 2;
Assert.AreEqual(2, target.Value_ClrWrapper);
Assert.AreEqual(1, sourcePropertyChangedCount);
Assert.AreEqual(2, targetPropertyChangedCount);
Assert.AreEqual(2, conversionCounter.ConvertedCount);
Assert.AreEqual(0, conversionCounter.ConvertedBackCount);
target.Value_ClrWrapper = 3;
Assert.AreEqual(2, source.Value);
Assert.AreEqual(1, sourcePropertyChangedCount);
Assert.AreEqual(3, targetPropertyChangedCount);
Assert.AreEqual(2, conversionCounter.ConvertedCount);
Assert.AreEqual(0, conversionCounter.ConvertedBackCount);
sourceRoot.Child = null;
Assert.AreEqual(0, target.Value_ClrWrapper);
Assert.AreEqual(4, targetPropertyChangedCount);
Assert.AreEqual(2, conversionCounter.ConvertedCount);
Assert.AreEqual(0, conversionCounter.ConvertedBackCount);
}
public void OneWayBindingTest()
{
ObservableNode sourceRoot = new ObservableNode();
ObservableNode source = new ObservableNode { Value = 1 };
DependencyObjectNode target = new DependencyObjectNode();
int sourcePropertyChangedCount = 0;
int targetPropertyChangedCount = 0;
source.PropertyChanged += (sender, e) => sourcePropertyChangedCount++;
target.PropertyChanged += (sender, e) => targetPropertyChangedCount++;
ConversionCounter conversionCounter = new ConversionCounter();
Binding binding = new Binding { Source = sourceRoot, Path = PropertyPath.Parse("Child.Value"), Mode = BindingMode.OneWay, Converter = conversionCounter };
target.SetValue(DependencyObjectNode.ValueProperty, binding);
Assert.AreEqual(0, target.Value_ClrWrapper);
Assert.AreEqual(0, conversionCounter.ConvertedCount);
Assert.AreEqual(0, conversionCounter.ConvertedBackCount);
sourceRoot.Child = source;
Assert.AreEqual(1, target.Value_ClrWrapper);
Assert.AreEqual(1, targetPropertyChangedCount);
Assert.AreEqual(1, conversionCounter.ConvertedCount);
Assert.AreEqual(0, conversionCounter.ConvertedBackCount);
source.Value = 2;
Assert.AreEqual(2, target.Value_ClrWrapper);
Assert.AreEqual(1, sourcePropertyChangedCount);
Assert.AreEqual(2, targetPropertyChangedCount);
Assert.AreEqual(2, conversionCounter.ConvertedCount);
Assert.AreEqual(0, conversionCounter.ConvertedBackCount);
target.Value_ClrWrapper = 3;
Assert.AreEqual(2, source.Value);
Assert.AreEqual(1, sourcePropertyChangedCount);
Assert.AreEqual(3, targetPropertyChangedCount);
Assert.AreEqual(2, conversionCounter.ConvertedCount);
Assert.AreEqual(0, conversionCounter.ConvertedBackCount);
sourceRoot.Child = null;
Assert.AreEqual(0, target.Value_ClrWrapper);
Assert.AreEqual(4, targetPropertyChangedCount);
Assert.AreEqual(2, conversionCounter.ConvertedCount);
Assert.AreEqual(0, conversionCounter.ConvertedBackCount);
}