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Readarr/NzbDrone.Core.Test/Ninject.Moq/MockProvider.cs

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2.0 KiB

using System;
using System.Collections.Generic;
using Moq;
using Ninject.Activation;
using Ninject.Injection;
namespace Ninject.Moq
{
/// <summary>
/// Creates mocked instances via Moq.
/// </summary>
public class MockProvider : IProvider
{
private static readonly Dictionary<Type, ConstructorInjector> _injectors = new Dictionary<Type, ConstructorInjector>();
/// <summary>
/// Gets the type (or prototype) of instances the provider creates.
/// </summary>
public Type Type
{
get { return typeof(Mock<>); }
}
/// <summary>
/// Gets the injector factory component.
/// </summary>
public IInjectorFactory InjectorFactory { get; private set; }
/// <summary>
/// Initializes a new instance of the <see cref="MockProvider"/> class.
/// </summary>
/// <param name="injectorFactory">The injector factory component.</param>
public MockProvider(IInjectorFactory injectorFactory)
{
InjectorFactory = injectorFactory;
}
/// <summary>
/// Creates an instance within the specified context.
/// </summary>
/// <param name="context">The context.</param>
/// <returns>The created instance.</returns>
public object Create(IContext context)
{
ConstructorInjector injector = GetInjector(context.Request.Service);
var mock = injector.Invoke() as Mock;
return mock.Object;
}
private ConstructorInjector GetInjector(Type service)
{
lock (_injectors)
{
Type mockType = typeof(Mock<>).MakeGenericType(service);
if (_injectors.ContainsKey(mockType))
return _injectors[mockType];
ConstructorInjector injector = InjectorFactory.Create(mockType.GetConstructor(Type.EmptyTypes));
_injectors[mockType] = injector;
return injector;
}
}
/// <summary>
/// Gets a callback that creates an instance of the <see cref="MockProvider"/>.
/// </summary>
/// <returns>The created callback.</returns>
public static Func<IContext, IProvider> GetCreationCallback()
{
return ctx => new MockProvider(ctx.Kernel.Components.Get<IInjectorFactory>());
}
}
}