catched up

tdd-oop-inheritance.CSharp.Main/Article.cs

@@ -6,37 +6,12 @@
 
 namespace tdd_oop_inheritance.CSharp.Main
 {
-    public class Article {
-        public string title;
-
-        bool onLoan = false;
-
+    public class Article : LibraryItem {
+
         public Article(string title) {
             this.title = title;
         }
 
-        public bool isOnLoan()  {
-            return onLoan;
-        }
-
-        public string checkIn() {
-            if (!this.isOnLoan()) {
-                return "item is not currently on loan";
-            }
-
-            this.onLoan = false;
-
-            return "item has been checked in";
-        }
-
-        public string checkOut() {
-            if (this.isOnLoan()) {
-                return "item is currently on loan";
-            }
-
-            this.onLoan = true;
-
-            return "item has been checked out";
-        }
+
     }
 }

tdd-oop-inheritance.CSharp.Main/Book.cs

@@ -6,37 +6,11 @@
 
 namespace tdd_oop_inheritance.CSharp.Main
 {
-    public class Book {
-        public string title;
-
-        bool onLoan = false;
-
-        public Book(string title) {
-            this.title = title;
-        }
-
-        public bool isOnLoan() {
-            return onLoan;
-        }
-
-        public string checkIn() {
-            if (!this.isOnLoan()) {
-                return "item is not currently on loan";
-            }
-
-            this.onLoan = false;
-
-            return "item has been checked in";
-        }
-
-        public string checkOut() {
-            if (this.isOnLoan()) {
-                return "item is currently on loan";
-            }
-
-            this.onLoan = true;
-
-            return "item has been checked out";
-        }
+    public class Book : LibraryItem
+    {
+       public Book(string name)
+       {
+            this.title = name;
+       }
     }
 }

tdd-oop-inheritance.CSharp.Main/LibraryItem.cs

@@ -0,0 +1,46 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace tdd_oop_inheritance.CSharp.Main
+{
+    public abstract class LibraryItem
+    {
+        public string title;
+
+        bool onLoan = false;
+
+
+
+        public bool isOnLoan()
+        {
+            return onLoan;
+        }
+
+        public virtual string checkIn()
+        {
+            if (!this.isOnLoan())
+            {
+                return "item is not currently on loan";
+            }
+
+            this.onLoan = false;
+
+            return "item has been checked in";
+        }
+
+        public virtual string checkOut()
+        {
+            if (this.isOnLoan())
+            {
+                return "item is currently on loan";
+            }
+
+            this.onLoan = true;
+
+            return "item has been checked out";
+        }
+    }
+}

tdd-oop-inheritance.CSharp.Main/Newspaper.cs

@@ -6,25 +6,23 @@
 
 namespace tdd_oop_inheritance.CSharp.Main
 {
-    public class Newspaper
+    public class Newspaper : LibraryItem
     {
-        public string title;
-
-        Boolean onLoan = false;
-
+
         public Newspaper(string title) {
             this.title = title;
         }
 
-        public bool isOnLoan() {
-            return onLoan;
-        }
+
+
 
-        public string checkIn() {
+
+        public override string checkIn() {
             return "newspapers are not available for loan";
         }
 
-        public string checkOut() {
+
+        public override string checkOut() {
             return "newspapers are not available for loan";
         }
     }