JUnit test file is added

Author: Rupa-Rd

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

@@ -0,0 +1,17 @@
+package com.thealgorithms.dynamicprogramming;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.junit.jupiter.api.Test;
+public class SubsetSumSpaceOptimized {
+    @Test
+    void basicCheck() {
+        assertTrue(SubsetSumSpaceOptimized.isSubsetSum(new int[] {7, 3, 2, 5, 8}, 14));
+        assertTrue(SubsetSumSpaceOptimized.isSubsetSum(new int[] {4, 3, 2, 1}, 5));
+        assertTrue(SubsetSumSpaceOptimized.isSubsetSum(new int[] {1, 7, 2, 9, 10}, 13));
+        assertFalse(SubsetSumSpaceOptimized.isSubsetSum(new int[] {1, 2, 7, 10, 9}, 14));
+        assertFalse(SubsetSumSpaceOptimized.isSubsetSum(new int[] {2, 15, 1, 6, 7}, 4));
+        
+    }
+}