From 1400431fc3f0d36ba71961acdbf18b0199ba295e Mon Sep 17 00:00:00 2001
From: Mahmoud Ben Hassine <mahmoud.benhassine@icloud.com>
Date: Thu, 12 May 2016 22:49:08 +0200
Subject: [PATCH] issue #39: add method to get registered listeners

---
 .../main/java/org/easyrules/api/RulesEngine.java   |  8 ++++++++
 .../org/easyrules/core/DefaultRulesEngine.java     |  5 +++++
 .../org/easyrules/core/DefaultRulesEngineTest.java | 14 ++++++++++++++
 3 files changed, 27 insertions(+)

diff --git a/easyrules-core/src/main/java/org/easyrules/api/RulesEngine.java b/easyrules-core/src/main/java/org/easyrules/api/RulesEngine.java
index 41eb059..c6169fd 100644
--- a/easyrules-core/src/main/java/org/easyrules/api/RulesEngine.java
+++ b/easyrules-core/src/main/java/org/easyrules/api/RulesEngine.java
@@ -24,6 +24,7 @@
 
 package org.easyrules.api;
 
+import java.util.List;
 import java.util.Set;
 import org.easyrules.core.RulesEngineParameters;
 
@@ -62,6 +63,13 @@ public interface RulesEngine {
      */
     Set<Rule> getRules();
 
+    /**
+     * Return the list of registered rule listeners.
+     *
+     * @return the list of registered rule listeners
+     */
+    List<RuleListener> getRuleListeners();
+
     /**
      * Fire all registered rules.
      */
diff --git a/easyrules-core/src/main/java/org/easyrules/core/DefaultRulesEngine.java b/easyrules-core/src/main/java/org/easyrules/core/DefaultRulesEngine.java
index a4093e7..f0f44c1 100644
--- a/easyrules-core/src/main/java/org/easyrules/core/DefaultRulesEngine.java
+++ b/easyrules-core/src/main/java/org/easyrules/core/DefaultRulesEngine.java
@@ -94,6 +94,11 @@ class DefaultRulesEngine implements RulesEngine {
         return rules;
     }
 
+    @Override
+    public List<RuleListener> getRuleListeners() {
+        return ruleListeners;
+    }
+
     @Override
     public void clearRules() {
         rules.clear();
diff --git a/easyrules-core/src/test/java/org/easyrules/core/DefaultRulesEngineTest.java b/easyrules-core/src/test/java/org/easyrules/core/DefaultRulesEngineTest.java
index 09a939f..ecd7f5c 100644
--- a/easyrules-core/src/test/java/org/easyrules/core/DefaultRulesEngineTest.java
+++ b/easyrules-core/src/test/java/org/easyrules/core/DefaultRulesEngineTest.java
@@ -4,6 +4,7 @@ import org.easyrules.annotation.Action;
 import org.easyrules.annotation.Condition;
 import org.easyrules.annotation.Priority;
 import org.easyrules.annotation.Rule;
+import org.easyrules.api.RuleListener;
 import org.easyrules.api.RulesEngine;
 import org.junit.After;
 import org.junit.Before;
@@ -29,6 +30,9 @@ public class DefaultRulesEngineTest {
     @Mock
     private BasicRule rule, anotherRule;
 
+    @Mock
+    private RuleListener ruleListener;
+
     private AnnotatedRule annotatedRule;
 
     private RulesEngine rulesEngine;
@@ -124,6 +128,16 @@ public class DefaultRulesEngineTest {
                 .containsExactly(rule, anotherRule);
     }
 
+    @Test
+    public void testGetRuleListeners() throws Exception {
+        rulesEngine = aNewRulesEngine()
+                .withRuleListener(ruleListener)
+                .build();
+
+        assertThat(rulesEngine.getRuleListeners())
+                .containsExactly(ruleListener);
+    }
+
     @After
     public void clearRules() {
         rulesEngine.clearRules();