gesture binding fixed + test

apps/ui-tests-app/pages/gesture-binding.ts

@@ -0,0 +1,16 @@
+import observable = require("data/observable");
+import gestures = require("ui/gestures");
+import pages = require("ui/page");
+
+export function pageLoaded(args: observable.EventData) {
+    var page = <pages.Page>args.object;
+    page.bindingContext = { tapAction: tapAction, doubleTapAction: doubleTapAction };
+}
+
+export function tapAction(args: gestures.GestureEventData) {
+    console.log("tapAction")
+}
+
+export function doubleTapAction(args: gestures.GestureEventData) {
+    console.log("doubleTapAction")
+}

apps/ui-tests-app/pages/gesture-binding.xml

@@ -0,0 +1,6 @@
+<Page loaded="pageLoaded">
+  <StackLayout>
+    <Label text="Handlers as exports" tap="tapAction" doubleTap="doubleTapAction" />
+    <Label text="Bound handlers" tap="{{ tapAction }}" doubleTap="{{ doubleTapAction }}" />
+  </StackLayout>
+</Page>