public void ShouldRemoveContextToViewRemovedFromRegion()
{
var behavior = new BindRegionContextToDependencyObjectBehavior();
var region = new MockPresentationRegion();
var view = new MockDependencyObject();
region.Add(view);
behavior.Region = region;
region.Context = "MyContext";
behavior.Attach();
region.Remove(view);
var context = RegionContext.GetObservableContext(view);
Assert.IsNull(context.Value);
}
public void ShouldSetRegionContextOnAlreadyAddedViews()
{
var behavior = new BindRegionContextToDependencyObjectBehavior();
var region = new MockPresentationRegion();
var view = new MockDependencyObject();
region.Add(view);
behavior.Region = region;
region.Context = "MyContext";
behavior.Attach();
var context = RegionContext.GetObservableContext(view);
Assert.IsNotNull(context.Value);
Assert.AreEqual("MyContext", context.Value);
}
public void ShouldSetRegionContextOnContextChange()
{
var behavior = new BindRegionContextToDependencyObjectBehavior();
var region = new MockPresentationRegion();
var view = new MockDependencyObject();
region.Add(view);
behavior.Region = region;
region.Context = "MyContext";
behavior.Attach();
Assert.AreEqual("MyContext", RegionContext.GetObservableContext(view).Value);
region.Context = "MyNewContext";
region.OnPropertyChange("Context");
Assert.AreEqual("MyNewContext", RegionContext.GetObservableContext(view).Value);
}
public void WhenAViewIsRemovedFromARegion_ThenRegionContextIsNotClearedInRegion()
{
var behavior = new BindRegionContextToDependencyObjectBehavior();
var region = new MockPresentationRegion();
behavior.Region = region;
behavior.Attach();
var myView = new MockFrameworkElement();
region.Add(myView);
region.Context = "new context";
region.Remove(myView);
Assert.IsNotNull(region.Context);
}