feat($q): add shorthand for defining promise error handlers

Now we can instead this

    promise.then(null, errorHandler)

with this

    promise.catch(errorhandler)

Closes #2048
Closes #3476

1 files changed, 12 insertions, 0 deletions

diff --git a/test/ng/qSpec.js b/test/ng/qSpec.js
index 6d08cb15..4f2492fb 100644
--- a/test/ng/qSpec.js
+++ b/test/ng/qSpec.js
@@ -516,6 +516,10 @@ describe('q', function() {
         expect(typeof promise.then).toBe('function');
       });
 
+      it('should have a catch method', function() {
+        expect(typeof promise['catch']).toBe('function');
+      });
+
       it('should have a always method', function() {
         expect(typeof promise.always).toBe('function');
       });
@@ -881,6 +885,14 @@ describe('q', function() {
 
         });
       });
+
+      describe('catch', function() {
+        it('should be a shorthand for defining promise error handlers', function() {
+          promise['catch'](error(1)).then(null, error(2))
+          syncReject(deferred, 'foo');
+          expect(logStr()).toBe('error1(foo)->reject(foo); error2(foo)->reject(foo)');
+        });
+      });
     });
   });