using System.Threading;
using System.Windows.Data;
using Caliburn.Events.Brokering;
using Caliburn.MarkupExtensions;
using Caliburn.Messaging;
using MbUnit.Framework;

namespace Tests.Caliburn.The_MarkupExtension_for
{
    [TestFixture(ApartmentState = ApartmentState.STA)]
    public class messages
    {
        [Test]
        public void defaults_to_providing_an_ActionMessage_based_on_a_string()
        {
            string actionName = "TheAction";
            MessageExtension extension = new MessageExtension(actionName);

            ActionMessage result = extension.ProvideValue(null) as ActionMessage;

            Assert.IsNotNull(result);
            Assert.AreEqual(actionName, result.Action);
        }

        [Test]
        public void can_provide_an_ActionMessage_based_on_various_properties()
        {
            string actionName = "TheAction";
            string trigger = "Click";
            Binding paramBinding = new Binding("some.path");
            Binding returnBinding = new Binding("some.path");

            MessageExtension extension = new MessageExtension();
            extension.Action = actionName;
            extension.Trigger = trigger;
            extension.ParamBinding = paramBinding;
            extension.Return = returnBinding;

            ActionMessage result = extension.ProvideValue(null) as ActionMessage;

            Assert.IsNotNull(result);
            Assert.AreEqual(actionName, result.Action);
            Assert.AreEqual(trigger, result.Trigger);
            Assert.AreEqual(paramBinding,
                            BindingOperations.GetBinding(result.Parameters[0], Parameter.ValueProperty));
            Assert.AreEqual(returnBinding, result.Return);
        }

        [Test]
        public void can_provide_an_EventMessage_based_on_various_properties()
        {
            Publication publication = new Publication("event://test/event");
            string trigger = "Click";
            Binding paramBinding = new Binding("some.path");
            Binding returnBinding = new Binding("some.path");

            MessageExtension extension = new MessageExtension();
            extension.Publication = publication;
            extension.Trigger = trigger;
            extension.ParamBinding = paramBinding;

            EventMessage result = extension.ProvideValue(null) as EventMessage;
            
            Assert.IsNotNull(result);
            Assert.AreEqual(publication, result.Publication);
            Assert.AreEqual(trigger, result.Trigger);
            Assert.AreEqual(paramBinding,
                            BindingOperations.GetBinding(result.Parameters[0], Parameter.ValueProperty));
        }
    }
}