add test case for JMX managed rule registration

easyrules-core/src/test/java/io/github/io/github/benas/easyrules/core/JmxRuleRegistrationTest.java

@@ -0,0 +1,48 @@
+package io.github.io.github.benas.easyrules.core;
+
+import io.github.benas.easyrules.api.JmxManagedRule;
+import io.github.benas.easyrules.api.RulesEngine;
+import io.github.benas.easyrules.core.BasicJmxManagedRule;
+import io.github.benas.easyrules.core.DefaultRulesEngine;
+import org.junit.Before;
+import org.junit.Test;
+
+import javax.management.*;
+
+import java.lang.management.ManagementFactory;
+
+import static org.junit.Assert.assertNotNull;
+
+/**
+ * Test class for JMX managed rule registration.
+ *
+ * @author Mahmoud Ben Hassine (md.benhassine@gmail.com)
+ */
+public class JmxRuleRegistrationTest {
+
+    private JmxManagedRule rule;
+
+    private RulesEngine rulesEngine;
+
+    @Before
+    public void setup(){
+
+        rule = new BasicJmxManagedRule("rule","description",1);
+
+        rulesEngine = new DefaultRulesEngine();
+    }
+
+    @Test
+    public void testRulePriorityThreshold() throws MalformedObjectNameException, IntrospectionException, InstanceNotFoundException, ReflectionException {
+
+        rulesEngine.registerJmxManagedRule(rule);
+
+        //assert that the rule has been successfully registered within JMX registry
+        MBeanServer mBeanServer = ManagementFactory.getPlatformMBeanServer();
+        ObjectName name = new ObjectName("io.github.benas.easyrules.jmx:type=" + JmxManagedRule.class.getSimpleName() + ",name=" + rule.getName());
+        MBeanInfo mBeanInfo = mBeanServer.getMBeanInfo(name);
+        assertNotNull(mBeanInfo);
+
+    }
+
+}