migrate _21 test to Junit5

fishercoder1534 · fishercoder1534 · commit e5f20acf827f · 2024-02-01T14:48:25.000-08:00
diff --git a/src/test/java/com/fishercoder/_21Test.java b/src/test/java/com/fishercoder/_21Test.java
@@ -3,21 +3,21 @@
 import com.fishercoder.common.classes.ListNode;
 import com.fishercoder.common.utils.LinkedListUtils;
 import com.fishercoder.solutions._21;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import java.util.Arrays;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
 public class _21Test {
     private static _21.Solution1 solution1;
     private static _21.Solution2 solution2;
     private static ListNode l1;
     private static ListNode l2;
 
-    @BeforeClass
-    public static void setup() {
+    @BeforeEach
+    public void setup() {
         solution1 = new _21.Solution1();
         solution2 = new _21.Solution2();
     }
