From 011e9c84fab865f4d5d0d55c3ba1d5d53100563a Mon Sep 17 00:00:00 2001
From: Artemy Tregubenko <atregoubenko@gmail.com>
Date: Fri, 3 Jan 2014 16:22:55 +0100
Subject: [PATCH] fix($httpBackend): cancelled JSONP requests will not print
 error in the console

When you cancel a JSONP request, angular deletes the callback for it. However the script still executes, and since the callback is now deleted and undefined, the script throws an exception visible in the console. The quick fix for this is not to delete the callback, but replace it with `angular.noop`.

Closes #5615
Closes #5616
---
 src/ng/httpBackend.js      | 2 +-
 test/ng/httpBackendSpec.js | 9 +++++++--
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/ng/httpBackend.js b/src/ng/httpBackend.js
index 29f390e0402b..565e1b126fd4 100644
--- a/src/ng/httpBackend.js
+++ b/src/ng/httpBackend.js
@@ -54,7 +54,7 @@ function createHttpBackend($browser, createXhr, $browserDefer, callbacks, rawDoc
         } else {
           completeRequest(callback, status || -2);
         }
-        delete callbacks[callbackId];
+        callbacks[callbackId] = angular.noop;
       });
     } else {
 
diff --git a/test/ng/httpBackendSpec.js b/test/ng/httpBackendSpec.js
index 1be31984d2f3..49514d8e3c75 100644
--- a/test/ng/httpBackendSpec.js
+++ b/test/ng/httpBackendSpec.js
@@ -330,7 +330,7 @@ describe('$httpBackend', function() {
         script.onload();
       }
 
-      expect(callbacks[callbackId]).toBeUndefined();
+      expect(callbacks[callbackId]).toBe(angular.noop);
       expect(fakeDocument.body.removeChild).toHaveBeenCalledOnceWith(script);
     });
 
@@ -397,7 +397,7 @@ describe('$httpBackend', function() {
     });
 
 
-    it('should abort request on timeout', function() {
+    it('should abort request on timeout and replace callback with noop', function() {
       callback.andCallFake(function(status, response) {
         expect(status).toBe(-1);
       });
@@ -406,9 +406,14 @@ describe('$httpBackend', function() {
       expect(fakeDocument.$$scripts.length).toBe(1);
       expect(fakeTimeout.delays[0]).toBe(2000);
 
+      var script = fakeDocument.$$scripts.shift(),
+        callbackId = script.src.match(SCRIPT_URL)[2];
+
       fakeTimeout.flush();
       expect(fakeDocument.$$scripts.length).toBe(0);
       expect(callback).toHaveBeenCalledOnce();
+
+      expect(callbacks[callbackId]).toBe(angular.noop);
     });