Make ember route expectations smarter

spec/support/route_helpers.rb

@@ -15,13 +15,26 @@ module SpecRouteHelpers
   end
 
   def ember_route_should_be(route_def)
-    ember_route.should == route_def
+    max_wait = 4
+    time = 0.0
+    time_step = 0.25
+    while time < max_wait && ember_route != route_def
+      time += time_step
+      sleep time_step
+    end
+    ember_route(omit_should_raise: true).should == route_def
   end
 
-  def ember_route
+  def ember_route(omit_should_raise: nil)
     # currentRouteName does not include model information: /list/123 => currentRouteName == 'list'
     # page.evaluate_script %|App.__container__.lookup('controller:application').get('currentRouteName')|
     # page.evaluate_script %|App.__container__.lookup('router:main').location.lastSetURL| # not working for direct path supplier#/settings
-    page.evaluate_script %{App.__container__ && (window.location.hash || "#/").substr(1)}
+    route = page.evaluate_script %{App.__container__ && (window.location.hash || "#/").substr(1)}
+    unless omit_should_raise
+      def route.should(*)
+        raise "Cannot call should on ember route. Use ember_route_should_be instead"
+      end
+    end
+    route
   end
 end