From 85e687e29c0d22893af2ed587d4abe0d3dc1aa8e Mon Sep 17 00:00:00 2001
From: Mike Gerwitz <mike@mikegerwitz.com>
Date: Thu, 3 Mar 2011 23:59:37 -0500
Subject: [PATCH] Added Interface.isInterface()

---
 lib/interface.js              | 20 ++++++++++++++++++++
 test/test-interface-extend.js |  6 ++++++
 2 files changed, 26 insertions(+)

diff --git a/lib/interface.js b/lib/interface.js
index f9098f4..8cba127 100644
--- a/lib/interface.js
+++ b/lib/interface.js
@@ -75,6 +75,26 @@ module.exports.extend = function()
 };
 
 
+/**
+ * Determines whether the provided object is an interface created through
+ * ease.js
+ *
+ * @param  {Object}  obj  object to test
+ *
+ * @return  {boolean}  true if interface (created through ease.js), otherwise
+ *                     false
+ */
+module.exports.isInterface = function( obj )
+{
+    obj = obj || {};
+
+    return ( obj.prototype instanceof Interface )
+        ? true
+        : false
+    ;
+};
+
+
 /**
  * Default interface implementation
  *
diff --git a/test/test-interface-extend.js b/test/test-interface-extend.js
index 06d68e7..2e542c7 100644
--- a/test/test-interface-extend.js
+++ b/test/test-interface-extend.js
@@ -105,6 +105,12 @@ for ( var i = 0; i < base_types.length; i++ )
         "Interface contains defined abstract methods"
     );
 
+    assert.equal(
+        Interface.isInterface( BaseType ),
+        true,
+        "Interface is considered to be an interface"
+    );
+
 
     var SubType = Interface.extend( BaseType,
     {