protected virtual ActionDescriptor FindAction(ControllerContext controllerContext, ControllerDescriptor controllerDescriptor, string actionName)
{
Contract.Assert(controllerContext != null);
Contract.Assert(controllerContext.RouteData != null);
Contract.Assert(controllerDescriptor != null);
if (controllerContext.RouteData.HasDirectRouteMatch())
{
List <DirectRouteCandidate> candidates = GetDirectRouteCandidates(controllerContext);
DirectRouteCandidate bestCandidate = DirectRouteCandidate.SelectBestCandidate(candidates, controllerContext);
if (bestCandidate == null)
{
return(null);
}
else
{
// We need to stash the RouteData of the matched route into the context, so it can be
// used for binding.
controllerContext.RouteData = bestCandidate.RouteData;
controllerContext.RequestContext.RouteData = bestCandidate.RouteData;
// We need to remove any optional parameters that haven't gotten a value (See MvcHandler)
bestCandidate.RouteData.Values.RemoveFromDictionary((entry) => entry.Value == UrlParameter.Optional);
return(bestCandidate.ActionDescriptor);
}
}
else
{
ActionDescriptor actionDescriptor = controllerDescriptor.FindAction(controllerContext, actionName);
return(actionDescriptor);
}
}
public void SelectBestCandidate_ChoosesByOrder()
{
// Arrange
Type controllerType = typeof(TestController);
ReflectedControllerDescriptor controllerDescriptor = new ReflectedControllerDescriptor(controllerType);
DirectRouteCandidate better = new DirectRouteCandidate()
{
ActionDescriptor = ActionDescriptorFrom <TestController>(c => c.Action1()),
ControllerDescriptor = controllerDescriptor,
Order = 0,
RouteData = new RouteData(),
};
DirectRouteCandidate worse = new DirectRouteCandidate()
{
ActionDescriptor = ActionDescriptorFrom <TestController>(c => c.Action1()),
ControllerDescriptor = controllerDescriptor,
Order = 1,
RouteData = new RouteData(),
};
List <DirectRouteCandidate> candidates = new List <DirectRouteCandidate>()
{
better,
worse,
};
// Act
DirectRouteCandidate actual = DirectRouteCandidate.SelectBestCandidate(candidates, new ControllerContext());
// Assert
Assert.Same(better, actual);
}
public void SelectBestCandidate_ReturnsNullOnEmptyList()
{
// Arrange & Act
DirectRouteCandidate actual = DirectRouteCandidate.SelectBestCandidate(new List <DirectRouteCandidate>(), new ControllerContext());
// Assert
Assert.Null(actual);
}
public void SelectBestCandidate_Ambiguity()
{
// Arrange
Type controllerType = typeof(TestController);
ReflectedControllerDescriptor controllerDescriptor = new ReflectedControllerDescriptor(
controllerType
);
DirectRouteCandidate candidate1 = new DirectRouteCandidate()
{
ActionDescriptor = new ReflectedActionDescriptor(
controllerType.GetMethod("Action1"),
"Action1",
controllerDescriptor
),
ActionSelectors = new ActionSelector[] { (context) => true },
ControllerDescriptor = controllerDescriptor,
Order = 0,
Precedence = 1,
RouteData = new RouteData(),
};
DirectRouteCandidate candidate2 = new DirectRouteCandidate()
{
ActionDescriptor = new ReflectedActionDescriptor(
controllerType.GetMethod("Action2"),
"Action2",
controllerDescriptor
),
ActionSelectors = new ActionSelector[] { (context) => true },
ControllerDescriptor = controllerDescriptor,
Order = 0,
Precedence = 1,
RouteData = new RouteData(),
};
List <DirectRouteCandidate> candidates = new List <DirectRouteCandidate>()
{
candidate1,
candidate2,
};
string message =
"The current request is ambiguous between the following action methods:"
+ Environment.NewLine
+ "Void Action1() on type System.Web.Mvc.Routing.Test.DirectRouteCandidateTest+TestController"
+ Environment.NewLine
+ "Void Action2() on type System.Web.Mvc.Routing.Test.DirectRouteCandidateTest+TestController";
// Act & Assert
Assert.Throws <AmbiguousMatchException>(
() => DirectRouteCandidate.SelectBestCandidate(candidates, new ControllerContext()),
message
);
}
public void SelectBestCandidate_SelectByActionNameSelector_UsesActionName()
{
// Arrange
Type controllerType = typeof(TestController);
ReflectedControllerDescriptor controllerDescriptor = new ReflectedControllerDescriptor(
controllerType
);
RouteData routeData = new RouteData();
routeData.Values["action"] = "Action1";
DirectRouteCandidate better = new DirectRouteCandidate()
{
ActionDescriptor = ActionDescriptorFrom <TestController>(c => c.Action1()),
ActionNameSelectors = new ActionNameSelector[]
{
(context, name) => name == "Action1"
},
ControllerDescriptor = controllerDescriptor,
RouteData = routeData,
};
DirectRouteCandidate worse = new DirectRouteCandidate()
{
ActionDescriptor = ActionDescriptorFrom <TestController>(c => c.Action2()),
ActionNameSelectors = new ActionNameSelector[]
{
(context, name) => name == "Action2"
},
ControllerDescriptor = controllerDescriptor,
RouteData = routeData,
};
List <DirectRouteCandidate> candidates = new List <DirectRouteCandidate>()
{
better,
worse,
};
// Act
DirectRouteCandidate actual = DirectRouteCandidate.SelectBestCandidate(
candidates,
new ControllerContext()
);
// Assert
Assert.Same(better, actual);
}
public void SelectBestCandidate_ExcludesFailedActionSelectors_NoneValid()
{
// Arrange
Type controllerType = typeof(TestController);
ReflectedControllerDescriptor controllerDescriptor = new ReflectedControllerDescriptor(
controllerType
);
DirectRouteCandidate better = new DirectRouteCandidate()
{
ActionDescriptor = ActionDescriptorFrom <TestController>(c => c.Action1()),
ActionSelectors = new ActionSelector[] { (context) => false, },
ControllerDescriptor = controllerDescriptor,
Order = 0,
RouteData = new RouteData(),
};
DirectRouteCandidate worse = new DirectRouteCandidate()
{
ActionDescriptor = ActionDescriptorFrom <TestController>(c => c.Action1()),
ActionSelectors = new ActionSelector[] { (context) => false, },
ControllerDescriptor = controllerDescriptor,
Order = 1,
RouteData = new RouteData(),
};
List <DirectRouteCandidate> candidates = new List <DirectRouteCandidate>()
{
better,
worse,
};
// Act
DirectRouteCandidate actual = DirectRouteCandidate.SelectBestCandidate(
candidates,
new ControllerContext()
);
// Assert
Assert.Null(actual);
}
