public void Bind_Can_Bind_One_OutArgument_Multiple_Times()
        {
            MockNonGenericProcessor p1 = new MockNonGenericProcessor();
            p1.SetOutputArguments(new ProcessorArgument("p1Out1", typeof(string)));

            MockNonGenericProcessor p2 = new MockNonGenericProcessor();
            p2.SetInputArguments(new ProcessorArgument("p2In1", typeof(string)));

            MockNonGenericProcessor p3 = new MockNonGenericProcessor();
            p3.SetInputArguments(new ProcessorArgument("p3In1", typeof(string)));

            ProcessorCollection collection = new ProcessorCollection(new MockNonGenericProcessor(), p1, p2, p3);
            PipelineBindingCollection bindings = new PipelineBindingCollection(collection);

            bindings.BindArguments(p1.OutArguments[0], p2.InArguments[0]);
            bindings.BindArguments(p1.OutArguments[0], p3.InArguments[0]);
            Assert.AreEqual(2, bindings.GetBoundToArguments(p1.OutArguments[0]).Count(), "Processor1 OutArgument1 should have been bound to two other arguments.");
            Assert.AreSame(p2.InArguments[0], bindings.GetBoundToArguments(p1.OutArguments[0]).First(), "Processor1 OutArgument1 should have been bound to Processor2 InArgument1.");
            Assert.AreSame(p3.InArguments[0], bindings.GetBoundToArguments(p1.OutArguments[0]).Skip(1).First(), "Processor1 OutArgument1 should have been bound to Processor3 InArgument1.");
            Assert.AreSame(p1.OutArguments[0], bindings.GetBoundToArguments(p2.InArguments[0]).Single(), "Processor2 InArgument1 should have been bound to Processor1 OutArgument1.");
            Assert.AreSame(p1.OutArguments[0], bindings.GetBoundToArguments(p3.InArguments[0]).Single(), "Processor3 InArgument1 should have been bound to Processor1 OutArgument1.");
        }
        public void Bind_Is_Idempotent()
        {
            MockNonGenericProcessor p1 = new MockNonGenericProcessor();
            p1.SetOutputArguments(new ProcessorArgument("p1Out1", typeof(string)));

            MockNonGenericProcessor p2 = new MockNonGenericProcessor();
            p2.SetInputArguments(new ProcessorArgument("p2In1", typeof(string)));

            ProcessorCollection collection = new ProcessorCollection(new MockNonGenericProcessor(), p1, p2);
            PipelineBindingCollection bindings = new PipelineBindingCollection(collection);

            bindings.BindArguments(p1.OutArguments[0], p2.InArguments[0]);
            Assert.AreEqual(1, bindings.GetBoundToArguments(p2.InArguments[0]).Count(), "Processor2 InArgument1 should have been bound to one other argument.");
            Assert.AreEqual(1, bindings.GetBoundToArguments(p1.OutArguments[0]).Count(), "Processor1 OutArgument1 should have been bound to one other argument.");
            Assert.AreSame(p1.OutArguments[0], bindings.GetBoundToArguments(p2.InArguments[0]).First(), "Processor2 InArgument1 should have been bound to Processor1 OutArgument1.");
            Assert.AreSame(p2.InArguments[0], bindings.GetBoundToArguments(p1.OutArguments[0]).First(), "Processor1 OutArgument1 should have been bound to Processor2 InArgument1.");

            bindings.BindArguments(p1.OutArguments[0], p2.InArguments[0]);
            Assert.AreEqual(1, bindings.GetBoundToArguments(p2.InArguments[0]).Count(), "Processor2 InArgument1 should have been bound to one other argument.");
            Assert.AreEqual(1, bindings.GetBoundToArguments(p1.OutArguments[0]).Count(), "Processor1 OutArgument1 should have been bound to one other argument.");
            Assert.AreSame(p1.OutArguments[0], bindings.GetBoundToArguments(p2.InArguments[0]).First(), "Processor2 InArgument1 should have been bound to Processor1 OutArgument1.");
            Assert.AreSame(p2.InArguments[0], bindings.GetBoundToArguments(p1.OutArguments[0]).First(), "Processor1 OutArgument1 should have been bound to Processor2 InArgument1.");
        }
        public void UnBind_Removes_The_Binding_If_Arguments_Are_Bound()
        {
            MockNonGenericProcessor p1 = new MockNonGenericProcessor();
            p1.SetOutputArguments(new ProcessorArgument("p1Out1", typeof(string)));

            MockNonGenericProcessor p2 = new MockNonGenericProcessor();
            p2.SetInputArguments(new ProcessorArgument("p2In1", typeof(string)));

            ProcessorCollection collection = new ProcessorCollection(new MockNonGenericProcessor(), p1, p2);
            PipelineBindingCollection bindings = new PipelineBindingCollection(collection);

            bindings.BindArguments(p1.OutArguments[0], p2.InArguments[0]);
            Assert.AreEqual(1, bindings.GetBoundToArguments(p2.InArguments[0]).Count(), "Processor2 InArgument1 should have been bound to one other argument.");
            Assert.AreEqual(1, bindings.GetBoundToArguments(p1.OutArguments[0]).Count(), "Processor1 OutArgument1 should have been bound to one other argument.");
            Assert.AreSame(p1.OutArguments[0], bindings.GetBoundToArguments(p2.InArguments[0]).Single(), "Processor2 InArgument1 should have been bound to Processor1 OutArgument1.");
            Assert.AreSame(p2.InArguments[0], bindings.GetBoundToArguments(p1.OutArguments[0]).Single(), "Processor1 OutArgument1 should have been bound to Processor2 InArgument1.");

            bindings.UnbindArguments(p1.OutArguments[0], p2.InArguments[0]);
            Assert.AreEqual(0, bindings.GetBoundToArguments(p2.InArguments[0]).Count(), "Processor2 InArgument1 should not have been bound to any other arguments.");
            Assert.AreEqual(0, bindings.GetBoundToArguments(p1.OutArguments[0]).Count(), "Processor1 OutArgument1 should not have been bound to any other arguments.");
        }
        public void UnBind_Does_Not_Remove_Other_Bindings_On_An_InArgument()
        {
            MockNonGenericProcessor p1 = new MockNonGenericProcessor();
            p1.SetOutputArguments(new ProcessorArgument("p1Out1", typeof(string)));

            MockNonGenericProcessor p2 = new MockNonGenericProcessor();
            p2.SetOutputArguments(new ProcessorArgument("p2Out1", typeof(string)));

            MockNonGenericProcessor p3 = new MockNonGenericProcessor();
            p3.SetInputArguments(new ProcessorArgument("p3In1", typeof(string)));

            ProcessorCollection collection = new ProcessorCollection(new MockNonGenericProcessor(), p1, p2, p3);
            PipelineBindingCollection bindings = new PipelineBindingCollection(collection);

            bindings.BindArguments(p1.OutArguments[0], p3.InArguments[0]);
            bindings.BindArguments(p2.OutArguments[0], p3.InArguments[0]);

            bindings.UnbindArguments(p1.OutArguments[0], p3.InArguments[0]);
            Assert.AreEqual(1, bindings.GetBoundToArguments(p2.OutArguments[0]).Count(), "Processor2 OutArgument1 should not have been bound to any other arguments.");
            Assert.AreEqual(1, bindings.GetBoundToArguments(p3.InArguments[0]).Count(), "Processor3 InArgument1 should not have been bound to any other arguments.");
            Assert.AreSame(p2.OutArguments[0], bindings.GetBoundToArguments(p3.InArguments[0]).Single(), "Processor3 InArgument1 should have been bound to Processor2 OutArgument1.");
            Assert.AreSame(p3.InArguments[0], bindings.GetBoundToArguments(p2.OutArguments[0]).Single(), "Processor2 OutArgument1 should have been bound to Processor3 InArgument1.");
        }
        public void GetBoundToArguments_Never_Returns_Null()
        {
            MockNonGenericProcessor p1 = new MockNonGenericProcessor();
            p1.SetOutputArguments(new ProcessorArgument("p1Out1", typeof(string)));

            ProcessorArgument arg2 = new ProcessorArgument("arg1", typeof(string));

            ProcessorCollection collection = new ProcessorCollection(new MockNonGenericProcessor(), p1);
            PipelineBindingCollection bindings = new PipelineBindingCollection(collection);

            IEnumerable<ProcessorArgument> boundArguments = bindings.GetBoundToArguments(p1.OutArguments[0]);
            Assert.IsNotNull(boundArguments, "ProcessorBindingCollection.GetBoundArguments should never return null.");
            Assert.AreEqual(0, boundArguments.Count(), "ProcessorBindingCollection.GetBoundArguments should have returned an empty collection.");

            boundArguments = bindings.GetBoundToArguments(arg2);
            Assert.IsNotNull(boundArguments, "ProcessorBindingCollection.GetBoundArguments should never return null.");
            Assert.AreEqual(0, boundArguments.Count(), "ProcessorBindingCollection.GetBoundArguments should have returned an empty collection.");
        }