From 802fa5e0bb0bded91fe2b4a3cef78efbfeac4570 Mon Sep 17 00:00:00 2001
From: Andrew Couch <github@couchand.com>
Date: Fri, 17 Jul 2015 11:14:17 -0400
Subject: [PATCH] Add respondsTo and satisfies as aliases

---
 lib/chai/core/assertions.js | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/lib/chai/core/assertions.js b/lib/chai/core/assertions.js
index dc5fc64..b9189b8 100644
--- a/lib/chai/core/assertions.js
+++ b/lib/chai/core/assertions.js
@@ -1368,12 +1368,13 @@ module.exports = function (chai, _) {
    *     expect(Klass).itself.to.respondTo('baz');
    *
    * @name respondTo
+   * @alias respondsTo
    * @param {String} method
    * @param {String} message _optional_
    * @api public
    */
 
-  Assertion.addMethod('respondTo', function (method, msg) {
+  function respondTo (method, msg) {
     if (msg) flag(this, 'message', msg);
     var obj = flag(this, 'object')
       , itself = flag(this, 'itself')
@@ -1386,7 +1387,10 @@ module.exports = function (chai, _) {
       , 'expected #{this} to respond to ' + _.inspect(method)
       , 'expected #{this} to not respond to ' + _.inspect(method)
     );
-  });
+  }
+
+  Assertion.addMethod('respondTo', respondTo);
+  Assertion.addMethod('respondsTo', respondTo);
 
   /**
    * ### .itself
@@ -1416,12 +1420,13 @@ module.exports = function (chai, _) {
    *     expect(1).to.satisfy(function(num) { return num > 0; });
    *
    * @name satisfy
+   * @alias satisfies
    * @param {Function} matcher
    * @param {String} message _optional_
    * @api public
    */
 
-  Assertion.addMethod('satisfy', function (matcher, msg) {
+  function satisfy (matcher, msg) {
     if (msg) flag(this, 'message', msg);
     var obj = flag(this, 'object');
     var result = matcher(obj);
@@ -1432,7 +1437,10 @@ module.exports = function (chai, _) {
       , this.negate ? false : true
       , result
     );
-  });
+  }
+  
+  Assertion.addMethod('satisfy', satisfy);
+  Assertion.addMethod('satisfies', satisfy);
 
   /**
    * ### .closeTo(expected, delta)