part 1

src/main/java/com/zipcodewilmington/phonebook/PhoneBook.java

@@ -57,17 +57,30 @@ public class PhoneBook {
 
     public String listPhoneBook() {
 
+        StringBuilder printBook = new StringBuilder();
 
-        String allInfo = "";
+        for (Map.Entry<String, String> entry : myTree.entrySet()) {
+            String key = entry.getKey();
+            String value = entry.getValue();
 
-        for (Map.Entry<String, String> entry: myTree.entrySet()){
-            String getKeys = String.format("%1$-15s", entry.getKey());
-            String getValues = String.format("%1$-15s", entry.getValue());
+            printBook.append(key).append(" = ").append(value).append("\n");
 
-            allInfo += getKeys + getValues + "\n";
+//        String allInfo = "";
+//
+//        for (Map.Entry<String, String> entry: myTree.entrySet()){
+//            String getKeys = String.format("%1$-15s", entry.getKey());
+//            String getValues = String.format("%1$-15s", entry.getValue());
+//
+//            allInfo += getKeys + getValues + "\n";
         }
+        String result = printBook.toString();
 
-        return allInfo;
+        return result;
+    }
+
+    public String reverseLookup() {
+
+        return null;
     }
 
 

src/test/java/com/zipcodewilmington/phonebook/PhoneBookTest.java

@@ -59,7 +59,30 @@ public class PhoneBookTest {
 
     }
 
+    @Test
+    public void listNamesTest1() {
+        PhoneBook testBook = new PhoneBook();
+        testBook.addEntry("Kate", "4846569090");
+        testBook.addEntry("Adam", "4864569090");
+        testBook.addEntry("Zeke", "4787869090");
+        String actual = testBook.listNames();
+        String expected = "Adam\nKate\nZeke\n";
+        Assert.assertEquals(actual, expected);
 
-}
 
+    }
 
+    @Test
+    public void listPhonebookTest1() {
+        PhoneBook testBook = new PhoneBook();
+        testBook.addEntry("Kate", "4846569090");
+        testBook.addEntry("Adam", "4864569090");
+        testBook.addEntry("Zeke", "4787869090");
+        String actual = testBook.listPhoneBook();
+        String expected = "Adam = 4864569090\nKate = 4846569090\nZeke = 4787869090\n";
+        Assert.assertEquals(actual, expected);
+
+
+    }
+
+}