Migrate to JUnit5

mutex/src/test/java/com/iluwatar/mutex/AppTest.java

@@ -22,7 +22,8 @@
  */
 package com.iluwatar.mutex;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
+
 import java.io.IOException;
 
 /**

mutex/src/test/java/com/iluwatar/mutex/JarTest.java

@@ -22,8 +22,10 @@
  */
 package com.iluwatar.mutex;
 
-import org.junit.Test;
-import static org.junit.Assert.*;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 /**
  * Test case for taking beans from a Jar

mutex/src/test/java/com/iluwatar/mutex/MutexTest.java

@@ -22,8 +22,11 @@
  */
 package com.iluwatar.mutex;
 
-import org.junit.Test;
-import static org.junit.Assert.*;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.fail;
 
 /**
  * Test case for acquiring and releasing a Mutex