Address sonar issues in drools-pdp

Addressed the following sonar issues:
- add "final" to public static fields
- commented code; some were bogus - just updated the comments
  so sonar is happy
- use "{}" instead of string concatenation
- junit should assert something
- when using logger, invoke compute-intensive tasks conditionally
- use superclass name instead of subclass name to access static fields
- don't always return the same value
- remove "transient" from fields of classes that aren't Serializable
- don't nest try/catch blocks
- use appropriate class name in Logger.getLogger()
- use Predicate<T> instead of Function<T,Boolean>
- remove unused parameters from private methods
- either log or throw
- remove duplicate methods
- use remove() TLS instead of set(null)
- null check is implicit in instanceof check
- do something with return value
- don't use volatile
- don't return "null" list; used Optional instead
- add no-arg constructor to non-Serializable superclass
- add callSuper=true for EqualsAndHashCode
- don't declare "throws XXX" where XXX is a subclass of RuntimeException
- remove serialVersionUID field if the class isn't Serializable

Also addressed some eclipse warnings:
- unused fields
- suppress generic typic cast warnings

Issue-ID: POLICY-2305
Change-Id: I906d5bf71c1f86531423e23b3667a585cdba45e1
Signed-off-by: Jim Hahn <jrh3@att.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/feature-active-standby-management/src/test/java/org/onap/policy/drools/activestandby/PmStandbyStateChangeNotifierTest.java b/feature-active-standby-management/src/test/java/org/onap/policy/drools/activestandby/PmStandbyStateChangeNotifierTest.java
index 4a89d257..1cf20e21 100644
--- a/feature-active-standby-management/src/test/java/org/onap/policy/drools/activestandby/PmStandbyStateChangeNotifierTest.java
+++ b/feature-active-standby-management/src/test/java/org/onap/policy/drools/activestandby/PmStandbyStateChangeNotifierTest.java
@@ -2,7 +2,7 @@
  * ============LICENSE_START=======================================================
  * ONAP
  * ================================================================================
- * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2019-2020 AT&T Intellectual Property. All rights reserved.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,6 +20,7 @@
 
 package org.onap.policy.drools.activestandby;
 
+import static org.assertj.core.api.Assertions.assertThatCode;
 import static org.junit.Assert.assertEquals;
 import static org.mockito.Matchers.any;
 import static org.mockito.Matchers.eq;
@@ -263,7 +264,7 @@ public class PmStandbyStateChangeNotifierTest {
     @Test
     public void testGetPolicyEngineManager() {
         // use real object with real method - no exception expected
-        new PmStandbyStateChangeNotifier().getPolicyEngineManager();
+        assertThatCode(() -> new PmStandbyStateChangeNotifier().getPolicyEngineManager()).doesNotThrowAnyException();
     }
 
     private class MyNotifier extends PmStandbyStateChangeNotifier {