update main and test

Author: bhishma620

src/main/java/com/thealgorithms/dynamicprogramming/Sum_Of_Subset.java renamed to src/main/java/com/thealgorithms/dynamicprogramming/SumOfSubset.java

@@ -2,17 +2,6 @@
 
 public class Sum_Of_Subset {
 
-    public static void main(String[] args) {
-        int[] arr = {7, 3, 2, 5, 8};
-        int Key = 14;
-
-        if (subsetSum(arr, arr.length - 1, Key)) {
-            System.out.print("Yes, that sum exists");
-        } else {
-            System.out.print("Nope, that number does not exist");
-        }
-    }
-
     public static boolean subsetSum(int[] arr, int num, int Key) {
         if (Key == 0) {
             return true;

src/test/java/com/thealgorithms/dynamicprogramming/SumOfSubsetTest.java

@@ -0,0 +1,21 @@
+package com.thealgorithms.dynamicprogramming;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+class SumOfSubsetTest {
+
+    @Test
+    void basicCheck() {
+        assertEquals(true, SumOfSubset.subsetSum(new int[] {7, 3, 2, 5, 8}, 4, 14));
+
+        assertEquals(true, SumOfSubset.subsetSum(new int[] {4, 3, 2, 1}, 3, 5));
+
+        assertEquals(false, SumOfSubset.subsetSum(new int[] {1, 2, 7, 10, 9}, 4, 14));
+
+        assertEquals(false, SumOfSubset.subsetSum(new int[] {2, 15, 1, 6, 7}, 4, 4));
+
+        assertEquals(true, SumOfSubset.subsetSum(new int[] {1, 7, 2, 9, 10}, 4, 13));
+    }
+}