Add rulesCount method in Rules API

Issue #283
j-easy · May 31, 2020 · 8748d60 · 8748d60
1 parent 68a509e
commit 8748d60
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diff --git a/easy-rules-core/src/main/java/org/jeasy/rules/api/Rules.java b/easy-rules-core/src/main/java/org/jeasy/rules/api/Rules.java
@@ -119,6 +119,15 @@ public void clear() {
         rules.clear();
     }
 
+    /**
+     * Check how many rules are currently registered
+     *
+     * @return the number of rules currently registered
+     */
+    public int rulesCount() {
+        return rules.size();
+    }
+
     /**
      * Return an iterator on the rules set. It is not intended to remove rules
      * using this iterator.

diff --git a/easy-rules-core/src/test/java/org/jeasy/rules/api/RulesTest.java b/easy-rules-core/src/test/java/org/jeasy/rules/api/RulesTest.java
@@ -118,6 +118,17 @@ public void sort() {
         assertThat(rules).startsWith(r1).endsWith(r2);
     }
 
+    @Test
+    public void rulesCount() {
+        assertThat(rules.rulesCount()).isEqualTo(0);
+
+        rules.register(new DummyRule());
+        assertThat(rules.rulesCount()).isEqualTo(1);
+
+        rules.unregister(new DummyRule());
+        assertThat(rules.rulesCount()).isEqualTo(0);
+    }
+
     @Test(expected = NullPointerException.class)
     public void whenRegisterNullRule_thenShouldThrowNullPointerException() {
         rules.register(null);