Commit ba82974

@@ -88,7 +88,9 @@ namespace MVPtoMVVM.presenters
         {
             view.SaveButtonEnabled = IsDirty && IsDescriptionValid() && IsDueDateValid();
             view.DescriptionHasValidationErrors = !IsDescriptionValid();
+            view.DescriptionValidationMessage = GetDescriptionValidationMessage();
             view.DueDateHasValidationErrors = !IsDueDateValid();
+            view.DueDateValidationMessage = GetDueDateValidationMessage();
             view.IsDueSoon = IsDueSoon();
         }
 
@@ -106,5 +108,15 @@ namespace MVPtoMVVM.presenters
         {
             return dueDate <= DateTime.Today.AddDays(1);
         }
+
+        private string GetDescriptionValidationMessage()
+        {
+            return IsDescriptionValid() ? null : "You must enter a description";
+        }
+
+        private string GetDueDateValidationMessage()
+        {
+            return IsDueDateValid() ? null : "Due Date must be today or later";
+        }
     }
 }
\ No newline at end of file

@@ -14,6 +14,8 @@ namespace MVPtoMVVM.views
         bool DescriptionHasValidationErrors { set; }
         bool DueDateHasValidationErrors { set; }
         bool IsDueSoon { set; }
+        string DescriptionValidationMessage { set; }
+        string DueDateValidationMessage { set; }
         void Remove(int itemId);
     }
 }
\ No newline at end of file

@@ -1,4 +1,5 @@
 using MVPtoMVVM.domain;
+using MVPtoMVVM.presenters;
 using StructureMap;
 
 namespace MVPtoMVVM.mvp
@@ -11,6 +12,7 @@ namespace MVPtoMVVM.mvp
                 x.Scan(scanner =>
                 {
                     scanner.AssemblyContainingType(typeof(TodoItem));
+                    scanner.AssemblyContainingType(typeof(TodoItemPresenter));
                     scanner.WithDefaultConventions();
                 })
             );

@@ -1,6 +1,5 @@
 using System;
 using System.Windows;
-using System.Windows.Controls;
 using System.Windows.Media;
 using MVPtoMVVM.presenters;
 using MVPtoMVVM.views;
@@ -91,6 +90,16 @@ namespace MVPtoMVVM.mvp
             set { dueSoonAlert.Visibility = value ? Visibility.Visible : Visibility.Hidden; }
         }
 
+        public string DescriptionValidationMessage
+        {
+            set { description.ToolTip = value; }
+        }
+
+        public string DueDateValidationMessage
+        {
+            set { dueDate.ToolTip = value; }
+        }
+
         public void Remove(int itemId)
         {
             parent.Remove(itemId);

@@ -1,3 +1,4 @@
+using System;
 using MVPtoMVVM.mvp;
 using MVPtoMVVM.repositories;
 using NUnit.Framework;
@@ -18,7 +19,7 @@ namespace MVPtoMVVM.test.mvp
         [Test]
         public void it_should_register_the_repository()
         {
-            ObjectFactory.WhatDoIHave();
+            Console.Out.WriteLine(ObjectFactory.WhatDoIHave());
             Assert.That(ObjectFactory.GetInstance<ITodoItemRepository>(), Is.TypeOf<TodoItemRepository>());
         }
     }