Tests: Take development jQuery versions from releases.jquery.com

code.jquery.com is now used just for the specific versions.

CONTRIBUTING.md

@@ -47,7 +47,7 @@ Make sure you have reproduced the bug with all browser extensions and add-ons di
 
 ### Try the latest version of jQuery
 
-Bugs in old versions of jQuery may have already been fixed. In order to avoid reporting known issues, make sure you are always testing against the [latest build](http://code.jquery.com/jquery.js).
+Bugs in old versions of jQuery may have already been fixed. In order to avoid reporting known issues, make sure you are always testing against the [latest jQuery version](https://releases.jquery.com/jquery/).
 
 ### Try an older version of jQuery
 
@@ -188,7 +188,7 @@ $ git checkout main
 
 ### Test Suite Tips...
 
-By default the plugin runs against the current (jquery-3.x-git WIP) version of jQuery. You can select a different version by specifying it in the URL. Files are always retrieved from code.jquery.com.
+By default the plugin runs against the current (jquery-3.x-git WIP) version of jQuery. You can select a different version by specifying it in the URL. Files are always retrieved from code.jquery.com or releases.jquery.com (the latter for development versions).
 
 Example:
 

Gruntfile.js

@@ -169,7 +169,7 @@ module.exports = function( grunt ) {
 				},
 				frameworks: [ "qunit" ],
 				files: [
-					"https://code.jquery.com/jquery-3.x-git.min.js",
+					"https://releases.jquery.com/git/jquery-3.x-git.min.js",
 					...karmaFilesExceptJQuery
 				],
 				client: {
@@ -194,7 +194,7 @@ module.exports = function( grunt ) {
 
 				options: {
 					files: [
-						"https://code.jquery.com/jquery-3.x-git.slim.min.js",
+						"https://releases.jquery.com/git/jquery-3.x-git.slim.min.js",
 						...karmaFilesExceptJQuery
 					]
 				}

README.md

@@ -27,7 +27,7 @@ The production build is minified and does not generate console warnings. It will
 | Debugging enabled | <p align="center">✓</p> |  |
 | Minified |  | <p align="center">✓</p> |
 | Latest release (*may be hotlinked if desired*) | [jquery-migrate-3.3.2.js](https://code.jquery.com/jquery-migrate-3.3.2.js) | [jquery-migrate-3.3.2.min.js](https://code.jquery.com/jquery-migrate-3.3.2.min.js) |
-| \* Latest work-in-progress build | [jquery-migrate-git.js](https://code.jquery.com/jquery-migrate-git.js) | [jquery-migrate-git.min.js](https://code.jquery.com/jquery-migrate-git.min.js) |
+| \* Latest work-in-progress build | [jquery-migrate-git.js](https://releases.jquery.com/git/jquery-migrate-git.js) | [jquery-migrate-git.min.js](https://releases.jquery.com/git/jquery-migrate-git.min.js) |
 
 
 \* **Work-in-progress build:** Although this file represents the most recent updates to the plugin, it may not have been thoroughly tested. We do not recommend using this file on production sites since it may be unstable; use the released production version instead.

test/testinit.js

@@ -46,6 +46,9 @@ TestManager = {
 			file = projectRoot + "/dist/" + projectName + ".js";
 		} else if ( version === "min" ) {
 			file = projectRoot + "/dist/" + projectName + ".min.js";
+		} else if ( version.indexOf( "git" ) === 0 ||
+			version.indexOf( "3.x-git" ) === 0 ) {
+			file = "https://releases.jquery.com/git/" + projectName + "-" + version + ".js";
 		} else if ( /^[\w\.\-]+$/.test( version ) ) {
 			file = "https://code.jquery.com/" + projectName + "-" + version + ".js";
 		} else {