Fix for #136 (cross domain requests)

As far as I can tell the hack originally suggested by @dcneiner is the best way to do this. The problem is that we still pass our mock XHR object to jQuery and it still sees the mismatched domains and forces an actual HTTP request using a script tag. Instead, we have to explicitly tell jQuery not to do so. We can safely set this all the time, because if we're mocking, we never want to send a cross-domain request.

Thanks to @LeopoldoFu and @r4j4h for keeping on this one.

src/jquery.mockjax.js

@@ -585,7 +585,11 @@
 				}
 			}
 
-
+            // We are mocking, so there will be no cross domain request, however, jQuery
+            // aggressively pursues this if the domains don't match, so we need to 
+            // explicitly disallow it. (See #136) 
+            origSettings.crossDomain = false;            
+
 			// Removed to fix #54 - keep the mocking data object intact
 			//mockHandler.data = requestSettings.data;
 

test/test.js

@@ -5,8 +5,8 @@
 
 	qunit.begin(function() {
 
-		qunit.noErrorCallbackExpected = function noErrorCallbackExpected() {
-			qunit.assert.ok(false, 'Error callback executed');
+		qunit.noErrorCallbackExpected = function noErrorCallbackExpected(xhr) {
+			qunit.assert.ok(false, 'Error callback executed: ' + xhr.status, xhr.responseText);
 		};
 
 		// Speed up our tests
@@ -2443,6 +2443,48 @@
 		});
 	});
 
+    t('Bug #136: cross domain script requests - GET', function(assert) {
+        var done = assert.async();
+
+        $.mockjax({
+            type: 'GET',
+            url: 'http://jquery-mockjax-foobar.com/somefile.js',
+            responseText: '(window.mockjaxCrossDomain=true)'
+        });
+
+        $.ajax({
+            type: 'GET',
+            dataType: 'script',
+            url: 'http://jquery-mockjax-foobar.com/somefile.js',
+            error: qunit.noErrorCallbackExpected,
+            success: function(data) {
+                assert.strictEqual(window.mockjaxCrossDomain, true, 'mockjax call for script was mocked');
+            },
+            complete: done
+        });
+    });
+
+    t('Bug #136: cross domain script requests - POST', function(assert) {
+        var done = assert.async();
+
+        $.mockjax({
+            type: 'POST',
+            url: 'http://jquery-mockjax-foobar.com/somefile.js',
+            responseText: '(window.mockjaxCrossDomain=true)'
+        });
+
+        $.ajax({
+            type: 'POST',
+            dataType: 'script',
+            url: 'http://jquery-mockjax-foobar.com/somefile.js',
+            error: qunit.noErrorCallbackExpected,
+            success: function(data) {
+                assert.strictEqual(window.mockjaxCrossDomain, true, 'mockjax call for script was mocked');
+            },
+            complete: done
+        });
+    });
+
 
 	/* -------------------- */
 	qunit.module('namespace');