Finished with tests

src/main/java/com/dtcc/projects/PhoneBook.java

@@ -1,4 +1,64 @@
 package com.dtcc.projects;
 
+import java.util.*;
+
 public class PhoneBook {
-}
+
+        //Phone number no hyphens please
+        public Map<String, List<String> > PhoneBook;
+
+        public PhoneBook(){
+            this(new LinkedHashMap<String, List<String>>());
+        }
+
+        public PhoneBook(Map<String, List<String>> map){
+            this.PhoneBook = map;
+        }
+
+        public void add(String name, String phoneNumber){
+            List<String> phoneNumberList = PhoneBook.get(name);
+            if(phoneNumberList != null){
+                phoneNumberList.add(phoneNumber);
+            }else{
+                //Singleton -> adds the phone number to names List of numbers
+                //Doing multiple things at once
+                PhoneBook.put(name, Collections.singletonList(phoneNumber));
+            }
+        }
+
+        public void addAll(String name, String[] phoneNumbers){
+            PhoneBook.put(name, Arrays.asList(phoneNumbers));
+        }
+
+        public void remove(String name){
+            PhoneBook.remove(name);
+        }
+
+        public boolean hasEntry(String name){
+           return PhoneBook.containsKey(name);
+        }
+
+        public List<String> lookup(String name){
+            return PhoneBook.get(name);
+        }
+
+        public String reverseLookup(String phoneNumber){
+            String tempString ="";
+            for(Map.Entry m: PhoneBook.entrySet()){
+                if((m.getValue().equals(Arrays.asList(phoneNumber)))){
+                    tempString += (String)m.getKey();
+                }
+            }
+            return tempString;
+        }
+
+        public List<String> getAllContactNames(){
+            List<String> temp = new ArrayList<>();
+            //Entries, each entry
+            for(Map.Entry m: PhoneBook.entrySet()){
+                temp.add((String)m.getKey());
+            }
+            return temp;
+        }
+    }
+

src/test/java/com/dtcc/projects/PhoneBookTest.java

@@ -1,4 +1,53 @@
 package com.dtcc.projects;
 
-public class PhoneBookTest {
+import junit.framework.Assert;
+import org.junit.Test;
+
+import java.util.HashMap;
+import java.util.List;
+
+public class PhoneBookTest extends PhoneBook{
+
+    @Test
+    public void addTest(){
+        add("Cedric", "3023007497");
+        add("Emergency","911");
+
+        Assert.assertEquals("3023007497", PhoneBook.get("Cedric"));
+        Assert.assertEquals("911", PhoneBook.get("Emergency"));
+    }
+
+    @Test
+    public void addAllTest(){
+        String[] temp = {"911", "3023007497"};
+        addAll("Cedric", temp);
+        Assert.assertEquals("3023007497", PhoneBook.get("Cedric"));
+    }
+
+    @Test
+    public void removeTest(){
+        add("Cedric", "3023007497");
+        add("Emergency","911");
+        remove("Emergency");
+        Assert.assertEquals(false, PhoneBook.containsKey("Emergency"));
+        Assert.assertEquals(true, PhoneBook.containsKey("Cedric"));
+    }
+
+    @Test
+    public void hasEntryTest(){
+        add("Cedric", "3023007497");
+        Assert.assertEquals(true, hasEntry("Cedric"));
+    }
+
+    @Test
+    public void lookupTest(){
+        add("Cedric", "3023007497");
+        List<String> temp = lookup("Cedric");
+        Assert.assertEquals("3023007497", temp.get(0));
+    }
+
+    @Test
+    public void getAllContactNamesTest(){
+
+    }
 }