Add Junit tests to 'policy-core'

These tests focus on the following classes:
- PolicyContainer
- PolicySession
- PolicySessionFeatureAPI

'maven-invoker-plugin' was used to compile and install artifacts for
testing during the 'test-compile' phase. These aren't part of the
Maven project hierarchy, so they aren't visible to Sonar and SonarQube,
and they aren't deployed.

Change-Id: I67c122debbe5280f0153e7330248dc5d13c5b2c0
Issue-ID: POLICY-236
Signed-off-by: Ralph Straubs <rs8887@att.com>

3 files changed, 71 insertions, 0 deletions

diff --git a/policy-core/drools-artifact-1.1/pom.xml b/policy-core/drools-artifact-1.1/pom.xml
new file mode 100644
index 00000000..24a6d37d
--- /dev/null
+++ b/policy-core/drools-artifact-1.1/pom.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ============LICENSE_START=======================================================
+  ONAP Policy Engine - Drools PDP
+  ================================================================================
+  Copyright (C) 2017 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.
+  You may obtain a copy of the License at
+  
+       http://www.apache.org/licenses/LICENSE-2.0
+  
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  ============LICENSE_END=========================================================
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <artifactId>drools-artifact1</artifactId>
+  <version>17.1.0-SNAPSHOT</version>
+  <description>supports Junit tests in policy-core</description>
+
+  <parent>
+    <groupId>org.onap.policy.drools-pdp</groupId>
+    <artifactId>drools-pdp</artifactId>
+    <version>1.1.0-SNAPSHOT</version>
+  </parent>
+</project>
diff --git a/policy-core/drools-artifact-1.1/src/main/resources/META-INF/kmodule.xml b/policy-core/drools-artifact-1.1/src/main/resources/META-INF/kmodule.xml
new file mode 100644
index 00000000..22319689
--- /dev/null
+++ b/policy-core/drools-artifact-1.1/src/main/resources/META-INF/kmodule.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<kmodule xmlns="http://jboss.org/kie/6.0.0/kmodule">
+    <kbase name="rules">
+        <ksession name="session1"/>
+    </kbase>
+</kmodule>
diff --git a/policy-core/drools-artifact-1.1/src/main/resources/rules.drl b/policy-core/drools-artifact-1.1/src/main/resources/rules.drl
new file mode 100644
index 00000000..9dac208b
--- /dev/null
+++ b/policy-core/drools-artifact-1.1/src/main/resources/rules.drl
@@ -0,0 +1,30 @@
+package org.onap.policy.drools.core.test;
+
+rule "Initialization"
+	when
+	then
+	{
+	  System.out.println("Initialization rule running");
+	}
+end
+
+rule "Add elements of an int array"
+	when
+		$object : Object()
+	then
+	{
+	  if ($object instanceof int[])
+		{
+		  int[] array = (int[])($object);
+
+		  System.out.println("Received array of length " + array.length);
+		  int sum = 0;
+		  for (int i = 1 ; i < array.length ; i += 1)
+			{
+			  sum += array[i];
+			}
+		  array[0] = sum;
+		  retract($object);
+		}
+	}
+end