我正在嘗試AutoFixture.ISpecimenBuilder為此類創建一個：
public class DiscosObjectRelationship<T> where T : DiscosModelBase
{
private readonly string _linkAddress;
private readonly IDiscosClient _client;
private T? _relatedObject;
public async Task<T?> GetRelatedObject()
{
return _relatedObject ?? await LazyLoad();
}
internal DiscosObjectRelationship(string linkAddress, IDiscosClient client)
{
_linkAddress = linkAddress;
_client = client;
}
private async Task<T?> LazyLoad()
{
_relatedObject = (await _client.Get<T>(_linkAddress))?.Attributes;
return _relatedObject;
}
}
本質上，我想要它做的就是將 設定_linkAddress為一個隨機 URL fromFaker.Net和_client一個模擬 from NSubstitute。我試過這樣做：
public class DiscosRelationshipSpecimenBuilder: ISpecimenBuilder
{
public object Create(object request, ISpecimenContext context)
{
if (request is Type {IsGenericType: true} type && type.GetGenericTypeDefinition() == typeof(DiscosObjectRelationship<>))
{
return Activator.CreateInstance(type, Faker.Internet.Url(), Substitute.For<IDiscosClient>()) ?? new NoSpecimen();
}
return new NoSpecimen();
}
}
但是，它會拋出一個關于無法找到該型別的建構式的錯誤。這讓我感到困惑（據我所知）我提供了正確的論點（string和IDiscosClient分別）。
完整的例外是：
System.MissingMethodException: Constructor on type 'DISCOSweb_Sdk.Models.Relationships.DiscosObjectRelationship`1[[DISCOSweb_Sdk.Models.ResponseModels.Reentries.Reentry, DISCOSweb-Sdk, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]' not found.
at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture)
at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
at System.Activator.CreateInstance(Type type, Object[] args)
at DISCOSweb_Sdk.Tests.Fixtures.AutoFixture.DiscosRelationshipSpecimenBuilder.Create(Object request, ISpecimenContext context) in /home/james/repos/DISOSweb-sdk/src/DISCOSweb-Sdk/DISCOSweb-Sdk.Tests/Fixtures/AutoFixture/DiscosRelationshipSpecimenBuilder.cs:line 17
at AutoFixture.Kernel.CompositeSpecimenBuilder.Create(Object request, ISpecimenContext context)
at AutoFixture.CustomizationNode.Create(Object request, ISpecimenContext context)
at AutoFixture.Kernel.CompositeSpecimenBuilder.Create(Object request, ISpecimenContext context)
at AutoFixture.Kernel.TerminatingWithPathSpecimenBuilder.Create(Object request, ISpecimenContext context)
我究竟做錯了什么？
uj5u.com熱心網友回復：
據我所知，如果您在此處使用激活反射呼叫，則不能將建構式設為內部，除非您提供正確的標志。我相信，通常情況下，它只適用于公共建構式。
轉載請註明出處，本文鏈接：https://www.uj5u.com/houduan/449170.html