1using System;
 2using System.Collections.Generic;
 3using System.Linq;
 4using System.Reflection;
 5
 6namespace tests
 7{
 8    public delegate void after_the_sut_has_been_created();
 9
10    public abstract class runner<SUT> : test
11    {
12        static IDictionary<Type, object> dependencies = new Dictionary<Type, object>();
13        ConstructorInfo greediest_constructor;
14
15        static protected SUT sut { get; private set; }
16
17        public override void initialize()
18        {
19            auto_register_dependencies();
20
21            context();
22            sut = create_sut();
23            after_create_sut();
24            because();
25        }
26
27        protected virtual void after_create_sut()
28        {
29            GetType().run_stacked<after_the_sut_has_been_created>(this);
30        }
31
32        public virtual SUT create_sut()
33        {
34            return (SUT) greediest_constructor.Invoke(dependencies.Values.ToArray());
35        }
36
37        protected void it(string should, Action<SUT> test)
38        {
39            it(should, () =>
40            {
41                test(sut);
42            });
43        }
44
45        static protected T dependency<T>() where T : class
46        {
47            if (dependencies.ContainsKey(typeof (T)))
48            {
49                return (T) dependencies[typeof (T)];
50            }
51            return mock_factory.create<T>();
52        }
53
54        void auto_register_dependencies()
55        {
56            dependencies.Clear();
57            greediest_constructor = typeof (SUT).find_the_greediest_constructor();
58            if (null == greediest_constructor) return;
59            greediest_constructor.GetParameters().each(x => register_dependency(x.ParameterType));
60        }
61
62        void register_dependency(Type dependency)
63        {
64            if (dependency.IsValueType)
65                dependencies[dependency] = Activator.CreateInstance(dependency);
66            else
67                dependencies[dependency] = mock_factory.create(dependency);
68        }
69    }
70}