80 lines
2.5 KiB
C#
80 lines
2.5 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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using Microsoft.Practices.ObjectBuilder2;
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using Microsoft.Practices.Unity;
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using Moq;
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namespace AutoMoq.Unity
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{
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internal class AutoMockingBuilderStrategy : BuilderStrategy
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{
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private readonly MockFactory mockFactory;
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private readonly IEnumerable<Type> registeredTypes;
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private readonly IUnityContainer container;
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public AutoMockingBuilderStrategy(IEnumerable<Type> registeredTypes, IUnityContainer container)
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{
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mockFactory = new MockFactory(MockBehavior.Loose);
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this.registeredTypes = registeredTypes;
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this.container = container;
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}
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public override void PreBuildUp(IBuilderContext context)
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{
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var autoMoqer = container.Resolve<AutoMoqer>();
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var type = GetTheTypeFromTheBuilderContext(context);
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if (AMockObjectShouldBeCreatedForThisType(type))
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{
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var mock = CreateAMockObject(type);
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context.Existing = mock.Object;
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autoMoqer.SetMock(type, mock);
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}
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}
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#region private methods
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private bool AMockObjectShouldBeCreatedForThisType(Type type)
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{
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return TypeIsNotRegistered(type) && type.IsInterface;
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}
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private static Type GetTheTypeFromTheBuilderContext(IBuilderContext context)
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{
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return ((NamedTypeBuildKey) context.OriginalBuildKey).Type;
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}
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private bool TypeIsNotRegistered(Type type)
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{
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return registeredTypes.Any(x => x.Equals(type)) == false;
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}
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private Mock CreateAMockObject(Type type)
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{
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var createMethod = GenerateAnInterfaceMockCreationMethod(type);
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return InvokeTheMockCreationMethod(createMethod);
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}
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private Mock InvokeTheMockCreationMethod(MethodInfo createMethod)
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{
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return (Mock) createMethod.Invoke(mockFactory, new object[] {new List<object>().ToArray()});
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}
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private MethodInfo GenerateAnInterfaceMockCreationMethod(Type type)
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{
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var createMethodWithNoParameters = mockFactory.GetType().GetMethod("Create", EmptyArgumentList());
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return createMethodWithNoParameters.MakeGenericMethod(new[] {type});
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}
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private static Type[] EmptyArgumentList()
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{
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return new[] {typeof (object[])};
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}
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#endregion
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}
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}
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