public void ConnectAndDisconnectFireAppropriateNumberOfTimes()
{
HandlerStub handlerStub = new HandlerStub();
handlerStub.SetVirtualView(new Maui.Controls.Button());
Assert.Equal(1, handlerStub.ConnectHandlerCount);
Assert.Equal(0, handlerStub.DisconnectHandlerCount);
handlerStub.SetVirtualView(new Maui.Controls.Button());
handlerStub.SetVirtualView(new Maui.Controls.Button());
handlerStub.SetVirtualView(new Maui.Controls.Button());
Assert.Equal(1, handlerStub.ConnectHandlerCount);
Assert.Equal(0, handlerStub.DisconnectHandlerCount);
(handlerStub as IViewHandler).DisconnectHandler();
Assert.Equal(1, handlerStub.ConnectHandlerCount);
Assert.Equal(1, handlerStub.DisconnectHandlerCount);
(handlerStub as IViewHandler).DisconnectHandler();
Assert.Equal(1, handlerStub.ConnectHandlerCount);
Assert.Equal(1, handlerStub.DisconnectHandlerCount);
handlerStub.SetVirtualView(new Maui.Controls.Button());
Assert.Equal(2, handlerStub.ConnectHandlerCount);
Assert.Equal(1, handlerStub.DisconnectHandlerCount);
(handlerStub as IViewHandler).DisconnectHandler();
Assert.Equal(2, handlerStub.ConnectHandlerCount);
Assert.Equal(2, handlerStub.DisconnectHandlerCount);
}
public void SettingVirtualViewOnHandlerRemovesHandlerFromPreviousVirtualView()
{
HandlerStub handlerStub = new HandlerStub();
var button1 = new Maui.Controls.Button();
var button2 = new Maui.Controls.Button();
handlerStub.SetVirtualView(button1);
handlerStub.SetVirtualView(button2);
Assert.Null(button1.Handler);
}
public void CanUseFactoryForAlternateType()
{
HandlerStub.PlatformViewFactory = (h) => { return(new CustomNativeButton()); };
HandlerStub handlerStub = new HandlerStub();
handlerStub.SetVirtualView(new Maui.Controls.Button());
Assert.True(handlerStub.PlatformView is CustomNativeButton);
}
public void FactoryCanPuntAndUseOriginalType()
{
HandlerStub.PlatformViewFactory = (h) => { return(null); };
HandlerStub handlerStub = new HandlerStub();
handlerStub.SetVirtualView(new Maui.Controls.Button());
Assert.NotNull(handlerStub.PlatformView);
Assert.False(handlerStub.PlatformView is CustomNativeButton);
Assert.True(handlerStub.PlatformView is object);
}
public void ChainingToLessTypedParentWorks()
{
bool wasMapper1Called = false;
bool wasMapper2Called = false;
var mapper1 = new PropertyMapper <IView, HandlerStub>
{
[nameof(IView.Background)] = (r, v) => wasMapper1Called = true
};
var mapper2 = new PropertyMapper <Button, HandlerStub>(mapper1)
{
[nameof(IView.Background)] = (r, v) => wasMapper2Called = true
};
HandlerStub handlerStub = new HandlerStub(mapper2);
handlerStub.SetVirtualView(new ButtonStub());
handlerStub.UpdateValue(nameof(IView.Background));
Assert.True(wasMapper1Called);
Assert.False(wasMapper2Called);
}
public void FactoryCanCustomizeBasedOnVirtualView()
{
HandlerStub.PlatformViewFactory = (h) =>
{
if (h.VirtualView is CustomButton)
{
return(new CustomNativeButton());
}
return(null);
};
HandlerStub handlerStub = new HandlerStub();
handlerStub.SetVirtualView(new CustomButton());
Assert.True(handlerStub.PlatformView is CustomNativeButton);
HandlerStub handlerStub2 = new HandlerStub();
handlerStub2.SetVirtualView(new Maui.Controls.Button());
Assert.True(handlerStub2.PlatformView is object);
}
