Test class were added from the Check and CreditCard class

src/main/java/com/zipcoder/payment/Check.java

@@ -0,0 +1,69 @@
+package com.zipcoder.payment;
+
+public class Check implements Payment {
+
+    private long id;
+    private String payerName;
+    private String routingNumber;
+    private String accountNumber;
+
+    public Check(){};
+
+    public Check(long id, String payerName, String routingNumber, String accountNumber){
+        this.id = id;
+        this.payerName = payerName;
+        this.routingNumber = routingNumber;
+        this.accountNumber = accountNumber;
+    }
+
+    public long getId() {
+        return this.id;
+    }
+
+    public String getPayerName() {
+        return this.payerName;
+    }
+
+    public String getShortDescription() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("Check ");
+        sb.append(this.payerName + " ");
+        sb.append("****");
+        sb.append(lastFourDigits());
+        return sb.toString();
+    }
+
+    public int lastFourDigits(){
+        //String numToString = new StringBuilder(Long.toString(this.number)).reverse().toString();
+        char[] numToChar = this.accountNumber.toCharArray();
+        String lastFourString = "";
+        for(int i = numToChar.length - 4; i < numToChar.length; i++){
+            lastFourString += Character.toString(numToChar[i]);
+        }
+        return Integer.parseInt(lastFourString);
+    }
+
+    public String getRoutingNumber() {
+        return routingNumber;
+    }
+
+    public void setRoutingNumber(String routingNumber) {
+        this.routingNumber = routingNumber;
+    }
+
+    public void setAccountNumber(String accountNumber) {
+        this.accountNumber = accountNumber;
+    }
+
+    public void setPayerName(String payerName) {
+        this.payerName = payerName;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+    public String getAccountNumber(){
+        return this.accountNumber;
+    }
+
+}

src/main/java/com/zipcoder/payment/CreditCard.java

@@ -10,9 +10,7 @@ public class CreditCard implements Payment {
     private int expiredMonth;
     private int expiredYear;
 
-    public CreditCard() {
-
-    }
+    public CreditCard() { }
 
     public CreditCard(int id, long number, String payerName, int expiredMonth, int expiredYear ) {
         this.id = id;
@@ -22,11 +20,6 @@ public class CreditCard implements Payment {
         this.expiredYear = expiredYear;
     }
 
-    public static void main(String[] args){
-       // this(12,"Nicholas Maidanos", 4, 11);
-
-    }
-
     public void setId(long id){
         this.id = id;
     }
@@ -78,7 +71,7 @@ public class CreditCard implements Payment {
         return sb.toString();
     }
 
-    private int lastFourDigits(){
+    public int lastFourDigits(){
         //String numToString = new StringBuilder(Long.toString(this.number)).reverse().toString();
         char[] numToChar = Long.toString(this.number).toCharArray();
         String lastFourString = "";

src/main/java/com/zipcoder/payment/Paypal.java

@@ -0,0 +1,11 @@
+package com.zipcoder.payment;
+
+public class Paypal implements Payment {
+
+    private long id;
+    private String payerName;
+    private String email;
+    public Paypal(){};
+
+
+}

src/test/java/com/zipcoder/payment/CheckTest.java

@@ -0,0 +1,144 @@
+package com.zipcoder.payment;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertThat;
+import static org.junit.jupiter.api.Assertions.*;
+
+class CheckTest {
+
+    @Test
+    void getId() {
+        //When
+        Check ck = new Check();
+        ck.setId(4456);
+
+        //Expect
+        long expected = 4456;
+
+        //Actual
+        long actual =  ck.getId();
+
+        assertEquals(expected, actual);
+    }
+
+    @Test
+    void getPayerName() {
+        //When
+        Check ck = new Check();
+        ck.setPayerName("Nicholas");
+
+        //Expect
+        String expected = "Nicholas";
+
+        //Actual
+        String acual = ck.getPayerName();
+        assertEquals(expected, acual);
+    }
+
+    @Test
+    void getShortDescription() {
+    }
+
+
+    @Test
+    void getRoutingNumber() {
+        //When
+        Check ck = new Check();
+        ck.setRoutingNumber("4532353");
+
+        //Expect
+        String expected = "4532353";
+
+        //Actual
+        String actual = ck.getRoutingNumber();
+        assertEquals(expected,actual);
+
+    }
+
+    @Test
+    void setRoutingNumber() {
+        //When
+        Check ck = new Check();
+        ck.setRoutingNumber("4532353");
+
+        //Expect
+        String expected = "4532353";
+
+        //Actual
+        String actual = ck.getRoutingNumber();
+        assertEquals(expected,actual);
+    }
+
+    @Test
+    void setAccountNumber() {
+        //When
+        Check ck = new Check();
+        ck.setAccountNumber("4532353");
+
+        //Expect
+        String expected = "4532353";
+
+        //Actual
+        String actual = ck.getAccountNumber();
+        assertEquals(expected,actual);
+    }
+
+    @Test
+    void setPayerName() {
+        //When
+        Check ck = new Check();
+        ck.setPayerName("Nick M");
+
+        //Expect
+        String expected = "Nick M";
+
+        //Actual
+        String actual = ck.getPayerName();
+        assertEquals(expected,actual);
+    }
+
+    @Test
+    void setId() {
+        //When
+        Check ck = new Check();
+        ck.setId(3423);
+
+        //Expect
+        long expected = 3423;
+
+        //Actual
+        long actual =  ck.getId();
+
+        assertEquals(expected, actual);
+    }
+
+    @Test
+    void getAccountNumber() {
+        //When
+        Check ck = new Check();
+        ck.setAccountNumber("893456");
+        //Expect
+        String expected = "893456";
+
+        //Actual
+        String actual = ck.getAccountNumber();
+
+        assertEquals(expected, actual);
+
+    }
+
+    @Test
+    void getShortDescription1() {
+        //When
+        Check ck = new Check(4563, "Nicholas Maidanos", "45335665", "444545");
+
+        //Expect
+        String expected = "Check Nicholas Maidanos ****4545";
+
+        //Actual
+        String actual = ck.getShortDescription();
+        assertEquals(expected, actual);
+    }
+}

src/test/java/com/zipcoder/payment/CreditCardTest.java

@@ -8,7 +8,7 @@ import org.junit.Test;
 public class CreditCardTest {
 
     @Test
-    public void getAndSetIdTest(){
+    public void getIdTest(){
         //When
         CreditCard cc = new CreditCard();
         cc.setId(100);
@@ -22,10 +22,24 @@ public class CreditCardTest {
         assertEquals(expected, actual);
     }
 
+    @Test
+    public void setIdTest(){
+        //When
+        CreditCard cc = new CreditCard();
+        cc.setId(100);
+
+        //Expect
+        long expected = 100;
+
+        //Actual
+        long actual =  cc.getId();
+
+        assertEquals(expected, actual);
+    }
 
 
     @Test
-    public void getAndSetPayerNameTest(){
+    public void getNameTest(){
         //When
         CreditCard cc = new CreditCard();
         cc.setPayerName("Nicholas Maidanos");
@@ -40,7 +54,7 @@ public class CreditCardTest {
     }
 
     @Test
-    public void getAndSetNum(){
+    public void SetNumTest(){
         //When
         CreditCard cc = new CreditCard();
         cc.setNumber(411111111);
@@ -55,7 +69,22 @@ public class CreditCardTest {
     }
 
     @Test
-    public void getAndSetExMonth(){
+    public void getMonthTest(){
+        //When
+        CreditCard cc = new CreditCard();
+        cc.setExpiredMonth(12);
+
+        //Expect
+        int expected = 12;
+
+        //Actual
+        int actual =  cc.getExpiredMonth();
+
+        assertEquals(expected, actual);
+    }
+
+    @Test
+    public void setMonthTest(){
         //When
         CreditCard cc = new CreditCard();
         cc.setExpiredMonth(12);
@@ -70,7 +99,22 @@ public class CreditCardTest {
     }
 
     @Test
-    public void getAndSetExYear(){
+    public void setYearTest(){
+        //When
+        CreditCard cc = new CreditCard();
+        cc.setExpiredYear(1989);
+
+        //Expect
+        int expected = 1989;
+
+        //Actual
+        int actual =  cc.getExpiredYear();
+
+        assertEquals(expected, actual);
+    }
+
+    @Test
+    public void getYearTest(){
         //When
         CreditCard cc = new CreditCard();
         cc.setExpiredYear(1989);
@@ -90,25 +134,24 @@ public class CreditCardTest {
         CreditCard cc = new CreditCard(12, 4111131,"Nicholas Maidanos", 4, 11);
 
         //Expect
-        String expected = "";
+        String expected = "CC Nicholas Maidanos 1131 4/11";
 
         //Actual
         String actual = cc.getShortDescription();
         assertEquals(expected, actual);
     }
 
-//    @Test
-//    public void getAndSetPayerShortDescriptionTest(){
-//        //When
-//        CreditCard cc = new CreditCard();
-//        cc.setShortDescription("This is a Credit Card");
-//
-//
-//
-//        //Actual
-//        String actual =  cc.getShortDescription();
-//
-//        assertEquals(expected, actual);
-//    }
+    @Test
+    public void testGetLastFourDigits(){
+        //Given
+        CreditCard cc = new CreditCard();
+        cc.setNumber(888999);
+        Integer expected = 8999;
+
+        //When
+        Integer actual = cc.lastFourDigits();
+        assertEquals(expected, actual);
+
+    }
 
 }