[ADD] Data and Coupon Tests

app/src/test/java/com/a1/nextlocation/CouponTestClass.java

@@ -0,0 +1,32 @@
+package com.a1.nextlocation;
+
+import com.a1.nextlocation.data.Coupon;
+
+import org.junit.Before;
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+
+public class CouponTestClass {
+    private Coupon testCoupon;
+
+    @Before
+    public void init(){
+        testCoupon = new Coupon("TESTCODE", "REWARDISTRUE");
+    }
+
+    @Test
+    public void testSetCode() {
+        testCoupon.setCode("testing");
+        String expected = "testing";
+        assertEquals(expected, testCoupon.getCode());
+    }
+
+    @Test
+    public void testSetReward() {
+        testCoupon.setReward("testreward");
+        String expected = "testreward";
+        assertNotNull(testCoupon.getReward());
+        assertEquals(expected, testCoupon.getReward());
+    }
+}