Fix some sonar issues in drools-applications

Added coverage to:
- feature-controlloop-management

Fixed sonar issues, but didn't add coverage to:
- feature-controlloop-trans
- eventmanager
- guard

Change-Id: I12f09c4a533e838c6fb9762ba56194e51ce864eb
Issue-ID: POLICY-1791
Signed-off-by: Jim Hahn <jrh3@att.com>

7 files changed, 132 insertions, 114 deletions

diff --git a/controlloop/common/guard/src/test/java/org/onap/policy/guard/GuardUtilTest.java b/controlloop/common/guard/src/test/java/org/onap/policy/guard/GuardUtilTest.java
index 0738ad180..e17207634 100644
--- a/controlloop/common/guard/src/test/java/org/onap/policy/guard/GuardUtilTest.java
+++ b/controlloop/common/guard/src/test/java/org/onap/policy/guard/GuardUtilTest.java
@@ -38,6 +38,7 @@ public class GuardUtilTest {
     @Test
     public void testLoadYamlOk() throws IOException {
         File tempYamlFile = File.createTempFile("ONAPPF", "yaml");
+        tempYamlFile.deleteOnExit();
 
         ControlLoopPolicy clPolicy = new ControlLoopPolicy();
 
@@ -50,23 +51,21 @@ public class GuardUtilTest {
 
         assertEquals(clPolicy, result.parameterA);
         assertEquals(clYamlString, result.parameterB);
-
-        tempYamlFile.delete();
     }
 
     @Test
     public void testLoadYamlError() throws IOException {
         File tempDir = Files.createTempDir();
+        tempDir.deleteOnExit();
 
         // Read from a directory forces an IO exception
         assertNull(Util.loadYaml(tempDir.getCanonicalPath()));
-
-        tempDir.delete();
     }
 
     @Test
     public void testLoadGuardYamlOk() throws IOException {
         File tempYamlFile = File.createTempFile("ONAPPF", "yaml");
+        tempYamlFile.deleteOnExit();
 
         ControlLoopGuard clGuardPolicy = new ControlLoopGuard();
 
@@ -78,18 +77,15 @@ public class GuardUtilTest {
         ControlLoopGuard result = Util.loadYamlGuard(tempYamlFile.getCanonicalPath());
 
         assertEquals(clGuardPolicy, result);
-
-        tempYamlFile.delete();
     }
 
     @Test
     public void testLoadGuardYamlError() throws IOException {
         File tempDir = Files.createTempDir();
+        tempDir.deleteOnExit();
 
         // Read from a directory forces an IO exception
         assertNull(Util.loadYamlGuard(tempDir.getCanonicalPath()));
-
-        tempDir.delete();
     }
 
     @Test
diff --git a/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardRequestTest.java b/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardRequestTest.java
index 3b0441fc2..2be0e06ec 100644
--- a/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardRequestTest.java
+++ b/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardRequestTest.java
@@ -31,25 +31,29 @@ import org.junit.Test;
 
 public class PolicyGuardRequestTest {
 
+    private static final String KANSAS = "Kansas";
+    private static final String GET_BACK_HOME = "GetBackHome";
+    private static final String DOROTHY = "Dorothy";
+
     @Test
     public void policyGuardRequestTest() {
         UUID requestId = UUID.randomUUID();
 
         assertNotNull(new PolicyGuardRequest(null, null, null, null));
 
-        PolicyGuardRequest request = new PolicyGuardRequest("Dorothy", "Kansas", requestId, "GetBackHome");
+        PolicyGuardRequest request = new PolicyGuardRequest(DOROTHY, KANSAS, requestId, GET_BACK_HOME);
 
         request.setRequestId(requestId);
         assertEquals(requestId, request.getRequestId());
 
-        request.setActor("Dorothy");
-        assertEquals("Dorothy", request.getActor());
+        request.setActor(DOROTHY);
+        assertEquals(DOROTHY, request.getActor());
 
-        request.setTarget("Kansas");
-        assertEquals("Kansas", request.getTarget());
+        request.setTarget(KANSAS);
+        assertEquals(KANSAS, request.getTarget());
 
-        request.setOperation("GetBackHome");
-        assertEquals("GetBackHome", request.getOperation());
+        request.setOperation(GET_BACK_HOME);
+        assertEquals(GET_BACK_HOME, request.getOperation());
 
         assertEquals("PolicyGuardRequest [actor=Dorothy", request.toString().substring(0, 33));
     }
diff --git a/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardResponseTest.java b/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardResponseTest.java
index b30ae0210..14e7a3ad0 100644
--- a/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardResponseTest.java
+++ b/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardResponseTest.java
@@ -31,22 +31,25 @@ import org.junit.Test;
 
 public class PolicyGuardResponseTest {
 
+    private static final String GET_BACK_HOME = "GetBackHome";
+    private static final String BACK_HOME = "BackHome";
+
     @Test
     public void policyGuardResponseTest() {
         UUID requestId = UUID.randomUUID();
 
         assertNotNull(new PolicyGuardResponse(null, null, null));
 
-        PolicyGuardResponse response = new PolicyGuardResponse("BackHome", requestId, "GetBackHome");
+        PolicyGuardResponse response = new PolicyGuardResponse(BACK_HOME, requestId, GET_BACK_HOME);
 
         response.setRequestId(requestId);
         assertEquals(requestId, response.getRequestId());
 
-        response.setResult("BackHome");
-        assertEquals("BackHome", response.getResult());
+        response.setResult(BACK_HOME);
+        assertEquals(BACK_HOME, response.getResult());
 
-        response.setOperation("GetBackHome");
-        assertEquals("GetBackHome", response.getOperation());
+        response.setOperation(GET_BACK_HOME);
+        assertEquals(GET_BACK_HOME, response.getOperation());
 
         assertEquals("PolicyGuardResponse [requestId=", response.toString().substring(0, 31));
     }
diff --git a/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardTest.java b/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardTest.java
index 87303623c..5f77d0331 100644
--- a/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardTest.java
+++ b/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardTest.java
@@ -46,9 +46,9 @@ import org.onap.policy.guard.impl.VnfTargetLock;
 public class PolicyGuardTest {
     private static final String INSTANCENAME = "targetInstance";
     private static final int LOCK_SEC = 10;
-    
+
     private static Factory saveFactory;
-    
+
     private Factory factory;
     private PolicyResourceLockManager mgr;
     private UUID uuid;
@@ -69,12 +69,12 @@ public class PolicyGuardTest {
     private class DummyTargetLock implements TargetLock {
         private TargetType type;
         private UUID reqid;
-        
+
         public DummyTargetLock(TargetType type, UUID reqid) {
             this.type = type;
             this.reqid = reqid;
         }
-        
+
         @Override
         public UUID getLockId() {
             return null;
@@ -95,17 +95,17 @@ public class PolicyGuardTest {
             return reqid;
         }
     }
-    
+
     @BeforeClass
     public static void setUpBeforeClass() {
         saveFactory = PolicyGuard.getFactory();
     }
-    
+
     @AfterClass
     public static void tearDownAfterClass() {
         PolicyGuard.setFactory(saveFactory);
     }
-    
+
     /**
      * Setup method.
      */
@@ -117,10 +117,10 @@ public class PolicyGuardTest {
              * manager is protected; this gets around that
              */
         });
-        
+
         factory = mock(Factory.class);
         when(factory.getManager()).thenReturn(mgr);
-        
+
         uuid = UUID.randomUUID();
         dlcb = new DummyLockCallback();
 
@@ -279,7 +279,7 @@ public class PolicyGuardTest {
     }
 
     @Test
-    public void testLockTargetTargetTypeStringUuidLockCallbackInt() throws Exception {
+    public void testLockTargetTargetTypeStringUuidLockCallbackInt() {
         TargetType type = TargetType.VM;
 
         LockResult<GuardResult, TargetLock> result;
@@ -299,7 +299,7 @@ public class PolicyGuardTest {
     }
 
     @Test
-    public void testLockTargetTargetLockInt() throws Exception {
+    public void testLockTargetTargetLockInt() {
         TargetType type = TargetType.VM;
 
         LockResult<GuardResult, TargetLock> result;
@@ -309,16 +309,16 @@ public class PolicyGuardTest {
         verify(mgr).lock(INSTANCENAME, type + ":" + uuid, LOCK_SEC);
         assertEquals(GuardResult.LOCK_ACQUIRED, result.getA());
         assertEquals(VmTargetLock.class, result.getB().getClass());
-        
+
         TargetLock lock = result.getB();
-        
+
         // refresh - re-acquired
         assertEquals(GuardResult.LOCK_ACQUIRED, PolicyGuard.lockTarget(lock, LOCK_SEC + 1));
         verify(mgr).refresh(INSTANCENAME, type + ":" + uuid, LOCK_SEC + 1);
-        
+
         // unlock
         PolicyGuard.unlockTarget(lock);
-        
+
         // refresh - denied, as we no longer own the lock
         assertEquals(GuardResult.LOCK_DENIED, PolicyGuard.lockTarget(lock, LOCK_SEC + 2));
     }
diff --git a/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardXacmlHelperTest.java b/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardXacmlHelperTest.java
index 2418ac663..19fed30a0 100644
--- a/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardXacmlHelperTest.java
+++ b/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardXacmlHelperTest.java
@@ -22,10 +22,8 @@ package org.onap.policy.guard;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.fail;
 
 import java.util.Properties;
-
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
 import org.junit.Test;
@@ -35,21 +33,24 @@ import org.onap.policy.drools.utils.logging.LoggerUtil;
 
 public class PolicyGuardXacmlHelperTest {
 
+    private static final String TARGET = "target";
+    private static final String REQUEST_ID = "requestId";
+    private static final String RECIPE = "recipe";
+    private static final String GUARD_URL = "guard.url";
+    private static final String ACTOR = "actor";
     private static final Integer VF_COUNT = 100;
 
     /**
      * Set up test class.
      */
     @BeforeClass
-    public static void setupSimulator() {
+    public static void setupSimulator() throws Exception {
         LoggerUtil.setLevel("ROOT", "INFO");
         LoggerUtil.setLevel("org.eclipse.jetty", "WARN");
-        try {
-            HttpServletServer.factory.destroy();
-            org.onap.policy.simulators.Util.buildGuardSim();
-        } catch (Exception e) {
-            fail(e.getMessage());
-        }
+
+        HttpServletServer.factory.destroy();
+        org.onap.policy.simulators.Util.buildGuardSim();
+
         //
         // Set guard properties
         //
@@ -65,8 +66,8 @@ public class PolicyGuardXacmlHelperTest {
 
         // Null/ Bad Connection Case
         PolicyGuardXacmlRequestAttributes xacmlReq = new PolicyGuardXacmlRequestAttributes(
-                        org.onap.policy.simulators.GuardSimulatorJaxRs.DENY_CLNAME, "actor", "recipe", "target",
-                        "requestId", VF_COUNT);
+                        org.onap.policy.simulators.GuardSimulatorJaxRs.DENY_CLNAME, ACTOR, RECIPE, TARGET,
+                        REQUEST_ID, VF_COUNT);
         String rawDecision = new PolicyGuardXacmlHelper().callPdp(xacmlReq);
         assertNotNull(rawDecision);
         assertEquals(Util.DENY, rawDecision);
@@ -88,14 +89,14 @@ public class PolicyGuardXacmlHelperTest {
     public void testCallPdp() {
         // Deny Case
         PolicyGuardXacmlRequestAttributes xacmlReq = new PolicyGuardXacmlRequestAttributes(
-                        org.onap.policy.simulators.GuardSimulatorJaxRs.DENY_CLNAME, "actor", "recipe", "target",
-                        "requestId", VF_COUNT);
+                        org.onap.policy.simulators.GuardSimulatorJaxRs.DENY_CLNAME, ACTOR, RECIPE, TARGET,
+                        REQUEST_ID, VF_COUNT);
         String rawDecision = new PolicyGuardXacmlHelper().callPdp(xacmlReq);
         assertNotNull(rawDecision);
         assertEquals(Util.DENY, rawDecision);
 
         // Permit Case
-        xacmlReq = new PolicyGuardXacmlRequestAttributes("clname", "actor", "recipe", "target", "requestId", VF_COUNT);
+        xacmlReq = new PolicyGuardXacmlRequestAttributes("clname", ACTOR, RECIPE, TARGET, REQUEST_ID, VF_COUNT);
         rawDecision = new PolicyGuardXacmlHelper().callPdp(xacmlReq);
         assertNotNull(rawDecision);
         assertEquals(Util.PERMIT, rawDecision);
@@ -109,15 +110,15 @@ public class PolicyGuardXacmlHelperTest {
 
         assertNotNull(new PolicyGuardXacmlHelper());
 
-        PolicyEngine.manager.getEnvironment().setProperty("guard.url",
+        PolicyEngine.manager.getEnvironment().setProperty(GUARD_URL,
                 "http://localhost:6669/pdp/api/getDecision,Dorothy");
         assertNotNull(new PolicyGuardXacmlHelper());
 
-        PolicyEngine.manager.getEnvironment().setProperty("guard.url",
+        PolicyEngine.manager.getEnvironment().setProperty(GUARD_URL,
                 "http://localhost:6669/pdp/api/getDecision,Dorothy,Toto");
         assertNotNull(new PolicyGuardXacmlHelper());
 
-        PolicyEngine.manager.getEnvironment().setProperty("guard.url",
+        PolicyEngine.manager.getEnvironment().setProperty(GUARD_URL,
                 "http://localhost:6969/policy/pdpx/v1/decision");
 
         PolicyEngine.manager.getEnvironment().setProperty("pdpx.timeout", "thisIsNotANumber");
@@ -132,7 +133,7 @@ public class PolicyGuardXacmlHelperTest {
         PolicyEngine.manager.getEnvironment().setProperty("pdpx.username", "python");
         assertNotNull(new PolicyGuardXacmlHelper());
 
-        PolicyEngine.manager.getEnvironment().setProperty("guard.url", "///");
+        PolicyEngine.manager.getEnvironment().setProperty(GUARD_URL, "///");
         assertNotNull(new PolicyGuardXacmlHelper());
 
         PolicyEngine.manager.getEnvironment().setProperty("guard.disabled", "");
diff --git a/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardYamlToXacmlTest.java b/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardYamlToXacmlTest.java
index a35696dec..75dc73c27 100644
--- a/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardYamlToXacmlTest.java
+++ b/controlloop/common/guard/src/test/java/org/onap/policy/guard/PolicyGuardYamlToXacmlTest.java
@@ -2,7 +2,7 @@
  * ============LICENSE_START=======================================================
  * guard
  * ================================================================================
- * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2017-2019 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.
@@ -41,6 +41,16 @@ import org.yaml.snakeyaml.Yaml;
 import org.yaml.snakeyaml.constructor.Constructor;
 
 public class PolicyGuardYamlToXacmlTest {
+    private static final String SOME_START_TIME = "someStartTime";
+    private static final String SOME_END_TIME = "someEndTime";
+    private static final String HOURS = "hours";
+    private static final String TARGET2 = "WickedWitchOfTheWest";
+    private static final String TARGET1 = "Wizard";
+    private static final String ONAPPF_FILE = "ONAPPF";
+    private static final String RECIPE = "GoToOz";
+    private static final String TEXT1 = "WestWitches";
+    private static final String TEXT2 = "EastWitches";
+    private static final String OUT_XACML = ".out.xacml";
     private ControlLoopGuard clGuard;
 
     /**
@@ -52,10 +62,10 @@ public class PolicyGuardYamlToXacmlTest {
         MatchParameters matchParameters = new MatchParameters();
         matchParameters.setControlLoopName("WizardOfOz");
         matchParameters.setActor("Dorothy");
-        matchParameters.setRecipe("GoToOz");
+        matchParameters.setRecipe(RECIPE);
         List<String> targets = new ArrayList<>();
-        targets.add("Wizard");
-        targets.add("WickedWitchOfTheWest");
+        targets.add(TARGET1);
+        targets.add(TARGET2);
         matchParameters.setTargets(targets);
         GuardPolicy guardPolicy = new GuardPolicy();
         guardPolicy.setMatch_parameters(matchParameters);
@@ -63,11 +73,11 @@ public class PolicyGuardYamlToXacmlTest {
         limitConstraint.setFreq_limit_per_target(5);
         Map<String, String> timeWindow = new HashMap<>();
         timeWindow.put("value", "10");
-        timeWindow.put("units", "hours");
+        timeWindow.put("units", HOURS);
         limitConstraint.setTime_window(timeWindow);
         Map<String, String> activeTimeRange = new HashMap<>();
-        activeTimeRange.put("start", "someStartTime");
-        activeTimeRange.put("end", "someEndTime");
+        activeTimeRange.put("start", SOME_START_TIME);
+        activeTimeRange.put("end", SOME_END_TIME);
         limitConstraint.setActive_time_range(activeTimeRange);
         LinkedList<Constraint> limitConstraints = new LinkedList<>();
         limitConstraints.add(limitConstraint);
@@ -79,9 +89,13 @@ public class PolicyGuardYamlToXacmlTest {
 
     @Test
     public void testGenerateXacmlGuardFull() throws IOException {
-        File tempYamlFile = File.createTempFile("ONAPPF", "yaml");
+        File tempYamlFile = File.createTempFile(ONAPPF_FILE, "yaml");
+        tempYamlFile.deleteOnExit();
+
         File tempXacmlTemplateFile = new File("src/test/resources/frequency_limiter_template.xml");
-        File tempXacmlOutputFile = File.createTempFile("ONAPPF", ".out.xacml");
+
+        File tempXacmlOutputFile = File.createTempFile(ONAPPF_FILE, OUT_XACML);
+        tempXacmlOutputFile.deleteOnExit();
 
         Yaml clYaml = new Yaml(new Constructor(ControlLoopGuard.class));
         String clYamlString = clYaml.dump(clGuard);
@@ -98,23 +112,24 @@ public class PolicyGuardYamlToXacmlTest {
         // Assert all substitutions are made
         assertTrue(result.contains("cl"));
         assertTrue(result.contains("actor"));
-        assertTrue(result.contains("GoToOz"));
-        assertTrue(result.contains("Wizard"));
-        assertTrue(result.contains("WickedWitchOfTheWest"));
+        assertTrue(result.contains(RECIPE));
+        assertTrue(result.contains(TARGET1));
+        assertTrue(result.contains(TARGET2));
         assertTrue(result.contains("10"));
-        assertTrue(result.contains("hours"));
-        assertTrue(result.contains("someStartTime"));
-        assertTrue(result.contains("someEndTime"));
-
-        tempYamlFile.delete();
-        tempXacmlOutputFile.delete();
+        assertTrue(result.contains(HOURS));
+        assertTrue(result.contains(SOME_START_TIME));
+        assertTrue(result.contains(SOME_END_TIME));
     }
 
     @Test
     public void testGenerateXacmlGuardPartial() throws IOException {
-        final File tempYamlFile = File.createTempFile("ONAPPF", "yaml");
+        final File tempYamlFile = File.createTempFile(ONAPPF_FILE, "yaml");
+        tempYamlFile.deleteOnExit();
+
         final File tempXacmlTemplateFile = new File("src/test/resources/frequency_limiter_template.xml");
-        final File tempXacmlOutputFile = File.createTempFile("ONAPPF", ".out.xacml");
+
+        final File tempXacmlOutputFile = File.createTempFile(ONAPPF_FILE, OUT_XACML);
+        tempXacmlOutputFile.deleteOnExit();
 
         MatchParameters matchParameters = clGuard.getGuards().get(0).getMatch_parameters();
         matchParameters.setControlLoopName(null);
@@ -137,16 +152,13 @@ public class PolicyGuardYamlToXacmlTest {
         // Assert all substitutions are made
         assertTrue(result.contains("cl"));
         assertTrue(result.contains("actor"));
-        assertFalse(result.contains("GoToOz"));
-        assertFalse(result.contains("Wizard"));
-        assertFalse(result.contains("WickedWitchOfTheWest"));
+        assertFalse(result.contains(RECIPE));
+        assertFalse(result.contains(TARGET1));
+        assertFalse(result.contains(TARGET2));
         assertTrue(result.contains("10"));
-        assertTrue(result.contains("hours"));
-        assertTrue(result.contains("someStartTime"));
-        assertTrue(result.contains("someEndTime"));
-
-        tempYamlFile.delete();
-        tempXacmlOutputFile.delete();
+        assertTrue(result.contains(HOURS));
+        assertTrue(result.contains(SOME_START_TIME));
+        assertTrue(result.contains(SOME_END_TIME));
     }
 
     @Test
@@ -173,13 +185,17 @@ public class PolicyGuardYamlToXacmlTest {
 
     @Test
     public void testGenerateXacmlGuardBlacklist() throws IOException {
-        final File tempYamlFile = File.createTempFile("ONAPPF", "yaml");
+        final File tempYamlFile = File.createTempFile(ONAPPF_FILE, "yaml");
+        tempYamlFile.deleteOnExit();
+
         final File tempXacmlTemplateFile = new File("src/test/resources/blacklist_template.xml");
-        final File tempXacmlOutputFile = File.createTempFile("ONAPPF", ".out.xacml");
+
+        final File tempXacmlOutputFile = File.createTempFile(ONAPPF_FILE, OUT_XACML);
+        tempXacmlOutputFile.deleteOnExit();
 
         List<String> blacklist = new ArrayList<>();
-        blacklist.add("WestWitches");
-        blacklist.add("EastWitches");
+        blacklist.add(TEXT1);
+        blacklist.add(TEXT2);
         clGuard.getGuards().get(0).getLimit_constraints().get(0).setBlacklist(blacklist);
 
         Yaml clYaml = new Yaml(new Constructor(ControlLoopGuard.class));
@@ -190,27 +206,27 @@ public class PolicyGuardYamlToXacmlTest {
                 tempXacmlTemplateFile.getCanonicalPath(), tempXacmlOutputFile.getCanonicalPath());
 
         String result = SupportTextFileUtils.getTextFileAsString(tempXacmlOutputFile.getCanonicalPath());
-        System.err.println(result);
         // Assert no mote "${}" are left
         assertFalse(result.contains("${"));
         assertFalse(result.contains("}"));
         // Assert all substitutions are made
-        assertTrue(result.contains("WestWitches"));
-        assertTrue(result.contains("EastWitches"));
-
-        tempYamlFile.delete();
-        tempXacmlOutputFile.delete();
+        assertTrue(result.contains(TEXT1));
+        assertTrue(result.contains(TEXT2));
     }
 
     @Test
     public void testGenerateXacmlGuardBlacklistPartial() throws IOException {
-        final File tempYamlFile = File.createTempFile("ONAPPF", "yaml");
+        final File tempYamlFile = File.createTempFile(ONAPPF_FILE, "yaml");
+        tempYamlFile.deleteOnExit();
+
         final File tempXacmlTemplateFile = new File("src/test/resources/blacklist_template.xml");
-        final File tempXacmlOutputFile = File.createTempFile("ONAPPF", ".out.xacml");
+
+        final File tempXacmlOutputFile = File.createTempFile(ONAPPF_FILE, OUT_XACML);
+        tempXacmlOutputFile.deleteOnExit();
 
         List<String> blacklist = new ArrayList<>();
-        blacklist.add("WestWitches");
-        blacklist.add("EastWitches");
+        blacklist.add(TEXT1);
+        blacklist.add(TEXT2);
         GuardPolicy guardPolicy = clGuard.getGuards().get(0);
         guardPolicy.getLimit_constraints().get(0).setBlacklist(blacklist);
 
@@ -228,15 +244,11 @@ public class PolicyGuardYamlToXacmlTest {
                 tempXacmlTemplateFile.getCanonicalPath(), tempXacmlOutputFile.getCanonicalPath());
 
         String result = SupportTextFileUtils.getTextFileAsString(tempXacmlOutputFile.getCanonicalPath());
-        System.err.println(result);
         // Assert no mote "${}" are left
         assertFalse(result.contains("${"));
         assertFalse(result.contains("}"));
         // Assert all substitutions are made
-        assertTrue(result.contains("WestWitches"));
-        assertTrue(result.contains("EastWitches"));
-
-        tempYamlFile.delete();
-        tempXacmlOutputFile.delete();
+        assertTrue(result.contains(TEXT1));
+        assertTrue(result.contains(TEXT2));
     }
 }
diff --git a/controlloop/common/guard/src/test/java/org/onap/policy/guard/SupportTextFileUtils.java b/controlloop/common/guard/src/test/java/org/onap/policy/guard/SupportTextFileUtils.java
index 03260ada9..98c33c761 100644
--- a/controlloop/common/guard/src/test/java/org/onap/policy/guard/SupportTextFileUtils.java
+++ b/controlloop/common/guard/src/test/java/org/onap/policy/guard/SupportTextFileUtils.java
@@ -3,6 +3,7 @@
  * guard
  * ================================================================================
  * Copyright (C) 2018 Ericsson. All rights reserved.
+ * Modifications Copyright (C) 2019 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.
@@ -21,9 +22,10 @@
 package org.onap.policy.guard;
 
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import org.drools.core.util.IoUtils;
 
 /**
  * The Class TextFileUtils is class that provides useful functions for handling text files.
@@ -31,7 +33,12 @@ import java.io.IOException;
  *
  * @author Liam Fallon (liam.fallon@ericsson.com)
  */
-public abstract class SupportTextFileUtils {
+public class SupportTextFileUtils {
+
+    private SupportTextFileUtils() {
+        // do nothing
+    }
+
     /**
      * Method to return the contents of a text file as a string.
      *
@@ -39,13 +46,8 @@ public abstract class SupportTextFileUtils {
      * @return A string containing the contents of the file
      * @throws IOException on errors reading text from the file
      */
-    public static String getTextFileAsString(final String textFilePath) throws IOException {
-        final File textFile = new File(textFilePath);
-        final FileInputStream textFileInputStream = new FileInputStream(textFile);
-        final byte[] textData = new byte[(int) textFile.length()];
-        textFileInputStream.read(textData);
-        textFileInputStream.close();
-        return new String(textData);
+    public static String getTextFileAsString(final String textFilePath) {
+        return IoUtils.readFileAsString(new File(textFilePath));
     }
 
     /**
@@ -56,8 +58,8 @@ public abstract class SupportTextFileUtils {
      * @throws IOException on errors reading text from the file
      */
     public static void putStringAsFile(final String outString, final File textFile) throws IOException {
-        final FileOutputStream textFileOutputStream = new FileOutputStream(textFile);
-        textFileOutputStream.write(outString.getBytes());
-        textFileOutputStream.close();
+        try (final FileOutputStream textFileOutputStream = new FileOutputStream(textFile)) {
+            textFileOutputStream.write(outString.getBytes(StandardCharsets.UTF_8));
+        }
     }
 }