Training Solutions (Part 1 & 2 complete)

DesignPatternsSolution/Execise.Tests/UnitTests.cs

@@ -12,18 +12,30 @@ public void LibraryShouldBeSingleton()
         {
             //check that when you create a Library instance second time, 
             //you get exactly the same instance as for a very first time
+            var L1 = Library.getInstance();
+            var L2 = Library.getInstance();
+
+            Assert.AreEqual(L1, L2);
         }
 
         //test that an book was registered successfully by checking the returned Id value is not -1
         [TestMethod]
         public void BookShouldRegister()
         {
+            Book B1 = new Book("Hello", "World", 2017, 10);
+            int result = RegistrationRepository.Register(B1);
+
+            Assert.AreNotEqual(-1, result);
         }
 
         //test that an customer was registered successfully by checking the returned Id value is not -1
         [TestMethod]
         public void CustomerShouldRegister()
         {
+            Customer C1 = new Customer("Troy", "Winnipeg");
+            int result = RegistrationRepository.Register(C1);
+
+            Assert.AreNotEqual(-1, result);
         }
 
         //test that a book can be borrowed

DesignPatternsSolution/Exercise/BookBorrowable.cs

@@ -1,7 +1,12 @@
 namespace Exercise
 {
-    public class BookBorrowable 
+    public class BookBorrowable
     {
-
+        BookBorrowable borrowable;
+
+        public void BorrowOne()
+        {
+
+        }
     }
 }

DesignPatternsSolution/Exercise/Item.cs

@@ -12,6 +12,7 @@ public Item(int amount, int year)
 
     public class Book : Item
     {
+
         public Book(string author, string title, int year, int amount) : base(amount, year)
         {
             NameOrTitle = title;

DesignPatternsSolution/Exercise/LibObject.cs

@@ -1,17 +1,29 @@
 namespace Exercise
 {
-    public abstract class LibObject
+    public abstract class LibObject : IRegistarable
     {
         public int ObjectId { get; set; }
         public int AvailableAmount { get; set; }
         public string NameOrTitle { get; set; }
         public ObjectType ObjType { get; set; }
         public int YearCreated { get; set; }
+
+        public RegisteredObject GetRegistrationInfo()
+        {
+            return new RegisteredObject()
+                { 
+                     Info = NameOrTitle,
+                     AvailableAmount = AvailableAmount,
+                     Id = ObjectId
+                };
+        }
     }
 
     public enum ObjectType
     {
         Person,
         Item
     }
+
+
 }

DesignPatternsSolution/Exercise/Library.cs

@@ -3,16 +3,15 @@
     public class Library
     {
         //implement Singleton to make sure only one library will exist
+        static Library instance = new Library();
 
-
+        private Library() { }
 
+        public static Library getInstance() { return instance; }
         //Implement Register method by utilizing RegistrationRepository (complete missing parts)
-        public int Register()
+        public int Register(IRegistarable registarable)
         {
-            // return RegistrationRepository.Register();
-
-            //dummy, just to compile
-            return 0;
+             return RegistrationRepository.Register(registarable);
         }
     }
 }