fix(Transition): Reject Transition promise when onBefore error

closes #2561

src/transition/transitionHook.ts

@@ -93,7 +93,7 @@ export class TransitionHook {
       try {
         results.push(hooks[i].invokeStep(locals));
       } catch (exception) {
-        if (!swallowExceptions) throw exception;
+        if (!swallowExceptions) return REJECT.aborted(exception);
         console.log("Swallowed exception during synchronous hook handler: " + exception); // TODO: What to do here?
       }
     }

test/transitionSpec.ts

@@ -123,6 +123,23 @@ describe('transition', function () {
         expect(result.get().reject.message).toEqual("transition failed");
       }));
 
+      it('$transition$.promise should reject on error in synchronous hooks', inject(function($transitions, $q) {
+        var result = new PromiseResult();
+
+        transitionProvider.onBefore({ from: "*", to: "third" }, function($transition$) {
+          result.setPromise($transition$.promise);
+          throw new Error("transition failed");
+        });
+
+        try {
+          makeTransition("", "third").run();
+        } catch (e) {}
+        $q.flush();
+
+        expect(result.called()).toEqual({ resolve: false, reject: true, complete: true });
+        expect(result.get().reject.detail.message).toEqual("transition failed");
+      }));
+
       it('should inject $transition$', inject(function($transitions, $q) {
         var t = null;