Convenciones de Ninject con la extensión de fábrica de Ninject para enlazar varios tipos a una interfaz
Estoy tratando de ampliar el escenario planteado en la pregunta SO tituladaLa extensión de la fábrica de Ninject une varios tipos de concreto a una interfaz mediante el uso de Convenciones Ninject para el enlace basado en convenciones de laICar
implementaciones
Estoy trabajandoLa respuesta aceptada escrita por Akim. ysu esencia Esbozando el ejemplo completo.
La diferencia es que he sustituido lo explícito.ICar
enlaces con enlaces basados en convenciones (o un intento de hacerlo, al menos;)
public class CarModule : NinjectModule
{
public override void Load()
{
Bind<ICarFactory>()
.ToFactory(() => new UseFirstArgumentAsNameInstanceProvider());
// my unsuccessful binding
Kernel.Bind(scanner => scanner
.FromThisAssembly()
.SelectAllClasses()
.InheritedFrom<ICar>()
.BindAllInterfaces());
//Bind<ICar>()
// .To<Mercedes>()
// .Named("Mercedes");
//Bind<ICar>()
// .To<Ferrari>()
// .Named("Ferrari");
}
}
Cuando intento crear una instancia de lacar
variable en la prueba, me sale unActivationException
:
Ninject.ActivationException was unhandled by user code
Message=Error activating ICar
No matching bindings are available, and the type is not self-bindable.
Activation path:
1) Request for ICar
Suggestions:
1) Ensure that you have defined a binding for ICar.
2) If the binding was defined in a module, ensure that the module has been loaded into the kernel.
3) Ensure you have not accidentally created more than one kernel.
4) If you are using constructor arguments, ensure that the parameter name matches the constructors parameter name.
5) If you are using automatic module loading, ensure the search path and filters are correct.
Source=Ninject
StackTrace:
at Ninject.KernelBase.Resolve(IRequest request) in c:\Projects\Ninject\ninject\src\Ninject\KernelBase.cs:line 362
at Ninject.ResolutionExtensions.GetResolutionIterator(IResolutionRoot root, Type service, Func`2 constraint, IEnumerable`1 parameters, Boolean isOptional, Boolean isUnique) in c:\Projects\Ninject\ninject\src\Ninject\Syntax\ResolutionExtensions.cs:line 263
at Ninject.ResolutionExtensions.Get(IResolutionRoot root, Type service, String name, IParameter[] parameters) in c:\Projects\Ninject\ninject\src\Ninject\Syntax\ResolutionExtensions.cs:line 164
at Ninject.Extensions.Factory.Factory.InstanceResolver.Get(Type type, String name, Func`2 constraint, ConstructorArgument[] constructorArguments, Boolean fallback) in c:\Projects\Ninject\ninject.extensions.factory\src\Ninject.Extensions.Factory\Factory\InstanceResolver.cs:line 75
at Ninject.Extensions.Factory.StandardInstanceProvider.GetInstance(IInstanceResolver instanceResolver, MethodInfo methodInfo, Object[] arguments) in c:\Projects\Ninject\ninject.extensions.factory\src\Ninject.Extensions.Factory\Factory\StandardInstanceProvider.cs:line 78
at Ninject.Extensions.Factory.FactoryInterceptor.Intercept(IInvocation invocation) in c:\Projects\Ninject\ninject.extensions.factory\src\Ninject.Extensions.Factory\Factory\FactoryInterceptor.cs:line 57
at Castle.DynamicProxy.AbstractInvocation.Proceed()
at Castle.Proxies.ICarFactoryProxy.CreateCar(String carType)
at Ninject.Extensions.Conventions.Tests.NinjectFactoryTests.A_Car_Factory_Creates_A_Car_Whose_Type_Name_Equals_Factory_Method_String_Argument() in C:\Programming\Ninject.Extensions.Conventions.Tests\NinjectFactoryTests.cs:line 33
InnerException:
¿Cómo puedo obtener esta prueba para pasar?
[Fact]
public void A_Car_Factory_Creates_A_Car_Whose_Type_Name_Equals_Factory_Method_String_Argument()
{
// auto-module loading is picking up my CarModule - otherwise, use:
// using (StandardKernel kernel = new StandardKernel(new CarModule()))
using (StandardKernel kernel = new StandardKernel())
{
// arrange
string carTypeArgument = "Mercedes";
ICarFactory factory = kernel.Get<ICarFactory>();
// act
var car = factory.CreateCar(carTypeArgument);
// assert
Assert.Equal(carTypeArgument, car.GetType().Name);
}
}
Aquí está el resto del código, lo más condensado posible, para que no tenga que referirse a lapregunta original
public interface ICarFactory { ICar CreateCar(string carType); }
public interface ICar { void Drive(); void Stop(); }
public class Mercedes : ICar {
public void Drive() { /* mercedes drives */ }
public void Stop() { /* mercedes stops */ }
}
public class Ferrari : ICar {
public void Drive() { /* ferrari drives */ }
public void Stop() { /* ferrari stops */ }
}
public class UseFirstArgumentAsNameInstanceProvider : StandardInstanceProvider
{
protected override string GetName(MethodInfo methodInfo, object[] arguments)
{
return (string) arguments[0];
}
protected override ConstructorArgument[] GetConstructorArguments(MethodInfo methodInfo, object[] arguments)
{
return base.GetConstructorArguments(methodInfo, arguments).Skip(1).ToArray();
}
}