Have Deferred.always return the object onto which it is currently attached to enable true chainability. Fixes #10723. Unit tests added.

1 files changed, 13 insertions, 0 deletions

diff --git a/test/unit/deferred.js b/test/unit/deferred.js
index eab14da2d..4a50da2c1 100644
--- a/test/unit/deferred.js
+++ b/test/unit/deferred.js
@@ -56,6 +56,19 @@ jQuery.each( [ "", " - new operator" ], function( _, withNew ) {
 	});
 } );
 
+test( "jQuery.Deferred - chainability", function() {
+
+	var methods = "resolve reject notify resolveWith rejectWith notifyWith done fail progress then always".split( " " ),
+		defer = jQuery.Deferred();
+
+	expect( methods.length );
+
+	jQuery.each( methods, function( _, method ) {
+		var object = { m: defer[ method ] };
+		strictEqual( object.m(), object, method + " is chainable" );
+	});
+});
+
 test( "jQuery.Deferred.pipe - filtering (done)", function() {
 
 	expect(4);