Testing Castle windsor Component with PerWebRequest lifestyle

Question

I\'m trying to do some testing with castle windsor involved, in one of my tests I want to check the windsor installers, so I check that the container can resolve my componen

Answer 1

I ended up implementing this extension. ATTN: Must call before loading components with the PerWebRequest lifestyle:

public static class WindsorContainerExtensions
{
    public static IWindsorContainer OverridePerWebRequestLifestyle(this IWindsorContainer container)
    {
        container.Kernel.ComponentModelCreated += model =>
        {
            if (model.IsPerWebRequestLifestyle())
            {
                model.LifestyleType = LifestyleType.Transient;
            }
        };

        return container;
    }

    private static bool IsPerWebRequestLifestyle(this ComponentModel model)
    {
        return model.LifestyleType == LifestyleType.Scoped
            && model.HasAccessorType(typeof(WebRequestScopeAccessor));
    }

    private static bool HasAccessorType(this ComponentModel model, Type type)
        => model.HasExtendedProperty("castle.scope-accessor-type", type);

    private static bool HasExtendedProperty<T>(this ComponentModel model, object key, T expected)
    {
        return model.ExtendedProperties[key] is T actual
            && EqualityComparer<T>.Default.Equals(actual, expected);
    }
}

Requires these imports:

using System;
using System.Collections.Generic;
using Castle.Core;
using Castle.Facilities.AspNet.SystemWeb;
using Castle.Windsor;

Answer 2

In your test you could subscribe to the ComponentModelCreated event and change the lifestyle of your per-web-request components to something else. (example).

If you're writing an integration test with the scope of a single request, singleton should do.

If you're writing an integration test that spans multiple requests, you could use a contextual lifestyle to simulate the scope of requests.

Edit: including code from example (which is no longer available):

container.Kernel.ComponentModelCreated += Kernel_ComponentModelCreated;

…

void Kernel_ComponentModelCreated(Castle.Core.ComponentModel model)
{
    if (model.LifestyleType == LifestyleType.Undefined)
        model.LifestyleType = LifestyleType.Transient;
}

Answer 3

From version 5 of Windsor the accepted answer doesn't work if you are using Castle.Facilities.AspNet.SystemWeb.WebRequestScopeAccessor because the PerWebRequest lifestyle is already a scoped lifestyle.

I got it to work by changing the the ComponentModelCreated delegate to the following:

void Kernel_ComponentModelCreated(Castle.Core.ComponentModel model)
{
    const string CastleScopeAccessorType = "castle.scope-accessor-type";

    if (model.ExtendedProperties.Contains(CastleScopeAccessorType))
    {
        model.ExtendedProperties.Remove(CastleScopeAccessorType);
    }
}

Answer 4

If you also want to check if the type of scope is per web request you could also do this

var isPerWebRequestScope = JsonConvert.SerializeObject(model.ExtendedProperties).Contains("Castle.Facilities.AspNet.SystemWeb.WebRequestScopeAccessor")