public static void AddBinding(this IMvxBindingContextOwner view, object target,
                               MvxBindingDescription bindingDescription, object clearKey = null)
 {
     var descriptions = new[] { bindingDescription };
     view.AddBindings(target, descriptions, clearKey);
 }
        private void TestCommon(MvxBindingMode bindingMode, bool expectSourceBinding, bool expectTargetBinding)
        {
            ClearAll();
            MvxBindingSingletonCache.Initialize();
            Ioc.RegisterSingleton<IMvxMainThreadDispatcher>(new InlineMockMainThreadDispatcher());

            var mockSourceBindingFactory = new Mock<IMvxSourceBindingFactory>();
            Ioc.RegisterSingleton(mockSourceBindingFactory.Object);

            var mockTargetBindingFactory = new Mock<IMvxTargetBindingFactory>();
            Ioc.RegisterSingleton(mockTargetBindingFactory.Object);

            var realSourceStepFactory = new MvxSourceStepFactory();
            realSourceStepFactory.AddOrOverwrite(typeof(MvxPathSourceStepDescription), new MvxPathSourceStepFactory());
            Ioc.RegisterSingleton<IMvxSourceStepFactory>(realSourceStepFactory);

            var sourceText = "sourceText";
            var targetName = "targetName";
            var source = new { Value = 1 };
            var target = new { Value = 2 };
            var converterParameter = new { Value = 3 };
            var fallbackValue = new { Value = 4 };
            var converter = new Mock<IMvxValueConverter>();
            var bindingDescription = new MvxBindingDescription
            {
                Source = new MvxPathSourceStepDescription()
                {
                    Converter = converter.Object,
                    ConverterParameter = converterParameter,
                    FallbackValue = fallbackValue,
                    SourcePropertyPath = sourceText,
                },
                Mode = bindingMode,
                TargetName = targetName
            };

            var mockSourceBinding = new Mock<IMvxSourceBinding>();
            var mockTargetBinding = new Mock<IMvxTargetBinding>();

            mockSourceBindingFactory
                .Setup(x => x.CreateBinding(It.Is<object>(s => s == source), It.Is<string>(s => s == sourceText)))
                .Returns((object a, string b) => mockSourceBinding.Object);
            mockTargetBindingFactory
                .Setup(x => x.CreateBinding(It.Is<object>(s => s == target), It.Is<string>(s => s == targetName)))
                .Returns((object a, string b) => mockTargetBinding.Object);

            var request = new MvxBindingRequest(source, target, bindingDescription);

            var toTest = new MvxFullBinding(request);

            //var sourceBindingTimes = expectSourceBinding ? Times.Once() : Times.Never();
            //mockSourceBinding.Verify(x => x.Changed += It.IsAny<EventHandler<MvxSourcePropertyBindingEventArgs>>(), sourceBindingTimes);
            mockSourceBindingFactory
                .Verify(x => x.CreateBinding(It.Is<object>(s => s == source), It.Is<string>(s => s == sourceText)),
                        Times.Once());

            //var targetBindingTimes = expectSourceBinding ? Times.Once() : Times.Never();
            //mockTargetBinding.Verify(x => x.ValueChanged += It.IsAny<EventHandler<MvxTargetChangedEventArgs>>(), targetBindingTimes);
            mockTargetBindingFactory
                .Verify(x => x.CreateBinding(It.Is<object>(s => s == target), It.Is<string>(s => s == targetName)),
                        Times.Once());
        }