public void RaisesActiveChangedWhenActiveAssigned()
{
var connected1 = new object();
var connected2 = new object();
IItemsPlacementConnector connector = this.CreateTestObject();
connector.Connect(connected1);
connector.Connect(connected2);
ActiveChangedEventArgs args = null;
connector.ActiveChanged += (sender, e) => args = e;
connector.Active = connected1;
Assert.IsNull(args.OldValue);
Assert.AreEqual(connected1, args.NewValue);
connector.Active = connected2;
Assert.AreEqual(connected1, args.OldValue);
Assert.AreEqual(connected2, args.NewValue);
connector.Active = null;
Assert.AreEqual(connected2, args.OldValue);
Assert.IsNull(args.NewValue);
}
/// <summary>
/// Raises the event <see cref="ActiveChanged"/>.
/// </summary>
/// <param name="e">The object with event's arguments.</param>
private void OnActiveChanged(ActiveChangedEventArgs e)
{
var activeChanged = this.ActiveChanged;
if (activeChanged != null)
{
activeChanged(this, e);
}
}
public void MakesActiveNullWhenActiveIsSingleAndHaveDisconnected()
{
var connected = new object();
IItemsPlacementConnector connector = this.CreateTestObject();
connector.Connect(connected);
connector.Active = connected;
ActiveChangedEventArgs args = null;
connector.ActiveChanged += (sender, e) => args = e;
connector.Disconnect(connected);
Assert.IsNull(connector.Active);
Assert.AreEqual(connected, args.OldValue);
Assert.IsNull(args.NewValue);
}
public void ActivatesConnectedWhenViewsCurrentChanged()
{
var connected1 = new object();
var connected2 = new object();
var view1 = new object();
var view2 = new object();
var match1 = Substitute.For <IViewModelViewMatch>();
var match2 = Substitute.For <IViewModelViewMatch>();
match1.View.Returns(view1);
match2.View.Returns(view2);
this._viewMatcher.Match(connected1).Returns(match1);
this._viewMatcher.Match(connected2).Returns(match2);
IItemsPlacementConnector connector = this.CreateTestObject();
connector.Connect(connected1);
connector.Connect(connected2);
ActiveChangedEventArgs args = null;
connector.ActiveChanged += (sender, e) => args = e;
connector.Views.MoveCurrentTo(view2);
Assert.AreEqual(connected2, connector.Active);
Assert.IsNull(args.OldValue);
Assert.AreEqual(connected2, args.NewValue);
connector.Views.MoveCurrentTo(view1);
Assert.AreEqual(connected1, connector.Active);
Assert.AreEqual(connected2, args.OldValue);
Assert.AreEqual(connected1, args.NewValue);
connector.Views.MoveCurrentTo(null);
Assert.IsNull(connector.Active);
Assert.AreEqual(connected1, args.OldValue);
Assert.IsNull(args.NewValue);
}
public void ActivatesPreviousWhenActiveIsLastAndHaveDisconnected()
{
var connected1 = new object();
var connected2 = new object();
var connected3 = new object();
IItemsPlacementConnector connector = this.CreateTestObject();
connector.Connect(connected1);
connector.Connect(connected2);
connector.Connect(connected3);
connector.Active = connected3;
ActiveChangedEventArgs args = null;
connector.ActiveChanged += (sender, e) => args = e;
connector.Disconnect(connected3);
Assert.AreEqual(connected2, connector.Active);
Assert.AreEqual(connected3, args.OldValue);
Assert.AreEqual(connected2, args.NewValue);
}
