public void RegionDoesNotGetAddedTwiceWhenUpdatingRegions()
{
var regionManager = new MockRegionManager();
var control = new MockFrameworkElement();
var regionScopeControl = new ContentControl();
var accessor = new MockRegionManagerAccessor
{
GetRegionManager = d => d == regionScopeControl ? regionManager : null
};
var behavior = new RegionManagerRegistrationBehavior()
{
RegionManagerAccessor = accessor,
Region = new MockPresentationRegion()
{
Name = "myRegionName"
},
HostControl = control
};
behavior.Attach();
Assert.IsFalse(regionManager.MockRegionCollection.AddCalled);
regionScopeControl.Content = control;
accessor.UpdateRegions();
Assert.IsTrue(regionManager.MockRegionCollection.AddCalled);
regionManager.MockRegionCollection.AddCalled = false;
accessor.UpdateRegions();
Assert.IsFalse(regionManager.MockRegionCollection.AddCalled);
}
public void BehaviorDoesNotPreventRegionManagerFromBeingGarbageCollected()
{
var control = new MockFrameworkElement();
var regionManager = new MockRegionManager();
var regionManagerWeakReference = new WeakReference(regionManager);
var accessor = new MockRegionManagerAccessor
{
GetRegionName = d => "myRegionName",
GetRegionManager = d => regionManager
};
var behavior = new RegionManagerRegistrationBehavior()
{
RegionManagerAccessor = accessor,
Region = new MockPresentationRegion(),
HostControl = control
};
behavior.Attach();
Assert.IsTrue(regionManagerWeakReference.IsAlive);
GC.KeepAlive(regionManager);
regionManager = null;
GC.Collect();
Assert.IsFalse(regionManagerWeakReference.IsAlive);
}
public void RegionWillNotGetCreatedTwiceWhenThereAreMoreRegions()
{
var control1 = new MockFrameworkElement();
var control2 = new MockFrameworkElement();
var accessor = new MockRegionManagerAccessor
{
GetRegionName = d => d == control1 ? "Region1" : "Region2"
};
var adapter = new MockRegionAdapter();
adapter.Accessor = accessor;
var behavior1 = this.GetBehavior(control1, accessor, adapter);
var behavior2 = this.GetBehavior(control2, accessor, adapter);
behavior1.Attach();
behavior2.Attach();
accessor.UpdateRegions();
Assert.IsTrue(adapter.CreatedRegions.Contains("Region1"));
Assert.IsTrue(adapter.CreatedRegions.Contains("Region2"));
Assert.AreEqual(1, adapter.CreatedRegions.Count((name) => name == "Region2"));
}
public void CanAttachBeforeSettingName()
{
var control = new ItemsControl();
var regionManager = new MockRegionManager();
var accessor = new MockRegionManagerAccessor
{
GetRegionManager = d => regionManager
};
var region = new MockPresentationRegion()
{
Name = null
};
var behavior = new RegionManagerRegistrationBehavior()
{
RegionManagerAccessor = accessor,
Region = region,
HostControl = control
};
behavior.Attach();
Assert.IsFalse(regionManager.MockRegionCollection.AddCalled);
region.Name = "myRegionName";
Assert.IsTrue(regionManager.MockRegionCollection.AddCalled);
Assert.AreSame(region, regionManager.MockRegionCollection.AddArgument);
}
public void RegionGetsRemovedFromRegionManagerWhenRemovedFromScope()
{
var regionManager = new MockRegionManager();
var control = new MockFrameworkElement();
var regionScopeControl = new ContentControl();
var accessor = new MockRegionManagerAccessor
{
GetRegionManager = d => d == regionScopeControl ? regionManager : null
};
var region = new MockPresentationRegion()
{
Name = "myRegionName"
};
var behavior = new RegionManagerRegistrationBehavior()
{
RegionManagerAccessor = accessor,
Region = region,
HostControl = control
};
behavior.Attach();
regionScopeControl.Content = control;
accessor.UpdateRegions();
Assert.IsTrue(regionManager.MockRegionCollection.AddCalled);
Assert.AreSame(region, regionManager.MockRegionCollection.AddArgument);
regionScopeControl.Content = null;
accessor.UpdateRegions();
Assert.IsTrue(regionManager.MockRegionCollection.RemoveCalled);
}
private DelayedRegionCreationBehavior GetBehavior(DependencyObject control, MockRegionManagerAccessor accessor, MockRegionAdapter adapter)
{
var mappings = new RegionAdapterMappings();
mappings.RegisterMapping(control.GetType(), adapter);
var behavior = new DelayedRegionCreationBehavior(mappings);
behavior.RegionManagerAccessor = accessor;
behavior.TargetElement = control;
return(behavior);
}
public void InvalidControlThrowsDuringAttach()
{
var control = new DependencyObject();
var accessor = new MockRegionManagerAccessor
{
GetRegionName = d => "myRegionName"
};
var behavior = this.GetBehavior(control, accessor);
behavior.Attach();
}
public void DoesNotFailIfRegionManagerIsNotSet()
{
var control = new ItemsControl();
var accessor = new MockRegionManagerAccessor();
var behavior = new RegionManagerRegistrationBehavior()
{
RegionManagerAccessor = accessor,
Region = new MockPresentationRegion()
{
Name = "myRegionWithoutManager"
},
HostControl = control
};
behavior.Attach();
}
public void BehaviorShouldUnhookEventWhenDetaching()
{
var control = new MockFrameworkElement();
var accessor = new MockRegionManagerAccessor
{
GetRegionName = d => "myRegionName",
};
var behavior = this.GetBehavior(control, accessor);
behavior.Attach();
int startingCount = accessor.GetSubscribersCount();
behavior.Detach();
Assert.AreEqual <int>(startingCount - 1, accessor.GetSubscribersCount());
}
public void RegionGetsCreatedWhenAccessingRegions()
{
var control = new MockFrameworkElement();
var accessor = new MockRegionManagerAccessor
{
GetRegionName = d => "myRegionName"
};
var behavior = this.GetBehavior(control, accessor);
behavior.Attach();
accessor.UpdateRegions();
Assert.IsNotNull(RegionManager.GetObservableRegion(control).Value);
Assert.IsInstanceOfType(RegionManager.GetObservableRegion(control).Value, typeof(IRegion));
}
public void RegionDoesNotGetCreatedTwiceWhenUpdatingRegions()
{
var control = new MockFrameworkElement();
var accessor = new MockRegionManagerAccessor
{
GetRegionName = d => "myRegionName"
};
var behavior = this.GetBehavior(control, accessor);
behavior.Attach();
accessor.UpdateRegions();
IRegion region = RegionManager.GetObservableRegion(control).Value;
accessor.UpdateRegions();
Assert.AreSame(region, RegionManager.GetObservableRegion(control).Value);
}
public void BehaviorDoesNotPreventControlFromBeingGarbageCollected()
{
var control = new MockFrameworkElement();
WeakReference controlWeakReference = new WeakReference(control);
var accessor = new MockRegionManagerAccessor
{
GetRegionName = d => "myRegionName"
};
var behavior = this.GetBehavior(control, accessor);
behavior.Attach();
Assert.IsTrue(controlWeakReference.IsAlive);
GC.KeepAlive(control);
control = null;
GC.Collect();
Assert.IsFalse(controlWeakReference.IsAlive);
}
public void ShouldCleanupBehaviorOnceRegionIsCreated()
{
var control = new MockFrameworkElement();
var accessor = new MockRegionManagerAccessor
{
GetRegionName = d => "myRegionName"
};
var behavior = this.GetBehavior(control, accessor);
WeakReference behaviorWeakReference = new WeakReference(behavior);
behavior.Attach();
accessor.UpdateRegions();
Assert.IsTrue(behaviorWeakReference.IsAlive);
GC.KeepAlive(behavior);
behavior = null;
GC.Collect();
Assert.IsFalse(behaviorWeakReference.IsAlive);
}
public void ShouldRegisterRegionIfRegionManagerIsSet()
{
var control = new ItemsControl();
var regionManager = new MockRegionManager();
var accessor = new MockRegionManagerAccessor
{
GetRegionManager = d => regionManager
};
var region = new MockPresentationRegion()
{
Name = "myRegionName"
};
var behavior = new RegionManagerRegistrationBehavior()
{
RegionManagerAccessor = accessor,
Region = region,
HostControl = control
};
behavior.Attach();
Assert.IsTrue(regionManager.MockRegionCollection.AddCalled);
Assert.AreSame(region, regionManager.MockRegionCollection.AddArgument);
}
public void RegionGetsCreatedWhenAccessingRegions()
{
var control1 = new MockFrameworkElement();
var control2 = new MockFrameworkContentElement();
var accessor = new MockRegionManagerAccessor
{
GetRegionName = d => "myRegionName"
};
var behavior1 = this.GetBehavior(control1, accessor);
behavior1.Attach();
var behavior2 = this.GetBehavior(control2, accessor);
behavior2.Attach();
accessor.UpdateRegions();
Assert.NotNull(RegionManager.GetObservableRegion(control1).Value);
Assert.IsAssignableFrom <IRegion>(RegionManager.GetObservableRegion(control1).Value);
Assert.NotNull(RegionManager.GetObservableRegion(control2).Value);
Assert.IsAssignableFrom <IRegion>(RegionManager.GetObservableRegion(control2).Value);
}
private DelayedRegionCreationBehavior GetBehavior(DependencyObject control, MockRegionManagerAccessor accessor)
{
return(GetBehavior(control, accessor, new MockRegionAdapter()));
}
