Merge pull request #726 from n1k0/resource-error-event

Trigger a "resource-error" event on resource loading failure

@@ -349,6 +349,16 @@ Emitted when a remote `window.callPhantom(data) <https://github.com/ariya/phanto
 
 Emitted when any remote console logging call has been performed.
 
+``resource.error``
+~~~~~~~~~~~~~~~~~~~~~
+
+**Arguments:** ``resourceError``
+
+Emitted when any requested resource fails to load properly. The received ``resourceError`` object has the following properties:
+
+- ``errorCode``: HTTP status code received
+- ``url``: resource url
+
 ``resource.received``
 ~~~~~~~~~~~~~~~~~~~~~
 

@@ -2558,6 +2558,9 @@ function createPage(casper) {
             casper.options.onResourceRequested.call(casper, casper, requestData, request);
         }
     };
+    page.onResourceError = function onResourceError(resourceError) {
+        casper.emit('resource.error', resourceError);
+    };
     page.onUrlChanged = function onUrlChanged(url) {
         casper.log(f('url changed to "%s"', url), "debug");
         casper.navigationRequested = false;

@@ -20,3 +20,16 @@ casper.test.begin("Basic resources tests", 5, function(test) {
     test.done();
   });
 });
+
+casper.test.begin('"resource.error" event', 3, function(test) {
+    casper.on("resource.error", function(error) {
+        test.assertType(error, "object", '"resource.error" triggered error information');
+        test.assert(error.errorCode === 203, '"resource.error" error code is correct');
+        test.assertMatch(error.url, /non-existant\.html$/, '"resource.error" url is correct');
+    });
+
+    casper.start('tests/site/non-existant.html').run(function() {
+        casper.removeAllListeners("resource.error");
+        test.done();
+    });
+});