Update to JUnit5 across all modules (#1668)

* Updated saga to JUnit 5

* Update fix for CI job in trampoline module

* Updated update-method module to JUnit 5

* Upgraded to latest JUnit Jupiter
JUnit 4 is not needed when using JUnit-Vintage

* Reverted change to access modifier on Trampoline

* Cleanup to resolve code smells

* Formatting

* Formatting

* Migrating to JUnit5 and updating some Mockito patterns

* Migrating to JUnit5

* Migrating to JUnit5

* Migrating to JUnit 5

* Formatting cleanup

* Added missing scope for junit

* Fixed tests that were not running previously.

Co-authored-by: Subhrodip Mohanta <hello@subho.xyz>

singleton/pom.xml

@@ -38,10 +38,6 @@
       <artifactId>junit-jupiter-engine</artifactId>
       <scope>test</scope>
     </dependency>
-    <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
-    </dependency>
   </dependencies>
   <build>
     <plugins>

singleton/src/test/java/com/iluwatar/singleton/ThreadSafeDoubleCheckLockingTest.java

@@ -23,15 +23,17 @@
 
 package com.iluwatar.singleton;
 
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
 import java.lang.reflect.InvocationTargetException;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 /**
  * Date: 12/29/15 - 19:26 PM.
  *
  * @author Jeroen Meulemeester
  */
-public class ThreadSafeDoubleCheckLockingTest extends SingletonTest<ThreadSafeDoubleCheckLocking> {
+class ThreadSafeDoubleCheckLockingTest extends SingletonTest<ThreadSafeDoubleCheckLocking> {
 
   /**
    * Create a new singleton test instance using the given 'getInstance' method.
@@ -43,12 +45,12 @@ public class ThreadSafeDoubleCheckLockingTest extends SingletonTest<ThreadSafeDo
   /**
    * Test creating new instance by refection.
    */
-  @Test(expected = InvocationTargetException.class)
-  public void testCreatingNewInstanceByRefection() throws Exception {
+  @Test
+  void testCreatingNewInstanceByRefection() throws Exception {
     ThreadSafeDoubleCheckLocking.getInstance();
     var constructor = ThreadSafeDoubleCheckLocking.class.getDeclaredConstructor();
     constructor.setAccessible(true);
-    constructor.newInstance((Object[]) null);
+    assertThrows(InvocationTargetException.class, () -> constructor.newInstance((Object[]) null));
   }
 
 }