mirror of
https://github.com/GeWuYou/GFramework.git
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- 实现 CqrsHandlerRegistryGenerator 源代码生成器 - 为 CQRS 请求处理器、通知处理器和流请求处理器生成注册代码 - 减少运行时程序集反射扫描开销 - 支持直接类型引用和反射加载两种注册方式 - 提供完整的单元测试验证生成器功能 - 实现对私有嵌套类型的反射注册支持
622 lines
39 KiB
C#
622 lines
39 KiB
C#
using System.Reflection;
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using GFramework.SourceGenerators.Cqrs;
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using GFramework.SourceGenerators.Tests.Core;
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namespace GFramework.SourceGenerators.Tests.Cqrs;
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/// <summary>
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/// 验证 CQRS 处理器注册生成器的输出与回退边界。
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/// </summary>
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[TestFixture]
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public class CqrsHandlerRegistryGeneratorTests
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{
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private const string HiddenNestedHandlerSelfRegistrationExpected = """
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// <auto-generated />
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#nullable enable
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[assembly: global::GFramework.Cqrs.CqrsHandlerRegistryAttribute(typeof(global::GFramework.Generated.Cqrs.__GFrameworkGeneratedCqrsHandlerRegistry))]
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namespace GFramework.Generated.Cqrs;
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internal sealed class __GFrameworkGeneratedCqrsHandlerRegistry : global::GFramework.Cqrs.ICqrsHandlerRegistry
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{
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public void Register(global::Microsoft.Extensions.DependencyInjection.IServiceCollection services, global::GFramework.Core.Abstractions.Logging.ILogger logger)
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{
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if (services is null)
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throw new global::System.ArgumentNullException(nameof(services));
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if (logger is null)
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throw new global::System.ArgumentNullException(nameof(logger));
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var registryAssembly = typeof(global::GFramework.Generated.Cqrs.__GFrameworkGeneratedCqrsHandlerRegistry).Assembly;
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RegisterReflectedHandler(services, logger, registryAssembly, "TestApp.Container+HiddenHandler");
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global::Microsoft.Extensions.DependencyInjection.ServiceCollectionServiceExtensions.AddTransient(
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services,
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typeof(global::GFramework.Cqrs.Abstractions.Cqrs.IRequestHandler<global::TestApp.VisibleRequest, string>),
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typeof(global::TestApp.VisibleHandler));
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logger.Debug("Registered CQRS handler TestApp.VisibleHandler as GFramework.Cqrs.Abstractions.Cqrs.IRequestHandler<TestApp.VisibleRequest, string>.");
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}
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private static void RegisterReflectedHandler(global::Microsoft.Extensions.DependencyInjection.IServiceCollection services, global::GFramework.Core.Abstractions.Logging.ILogger logger, global::System.Reflection.Assembly registryAssembly, string implementationTypeMetadataName)
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{
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var implementationType = registryAssembly.GetType(implementationTypeMetadataName, throwOnError: false, ignoreCase: false);
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if (implementationType is null)
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return;
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var handlerInterfaces = implementationType.GetInterfaces();
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global::System.Array.Sort(handlerInterfaces, CompareTypes);
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foreach (var handlerInterface in handlerInterfaces)
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{
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if (!IsSupportedHandlerInterface(handlerInterface))
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continue;
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global::Microsoft.Extensions.DependencyInjection.ServiceCollectionServiceExtensions.AddTransient(
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services,
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handlerInterface,
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implementationType);
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logger.Debug($"Registered CQRS handler {GetRuntimeTypeDisplayName(implementationType)} as {GetRuntimeTypeDisplayName(handlerInterface)}.");
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}
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}
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private static int CompareTypes(global::System.Type left, global::System.Type right)
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{
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return global::System.StringComparer.Ordinal.Compare(GetRuntimeTypeDisplayName(left), GetRuntimeTypeDisplayName(right));
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}
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private static bool IsSupportedHandlerInterface(global::System.Type interfaceType)
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{
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if (!interfaceType.IsGenericType)
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return false;
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var definitionFullName = interfaceType.GetGenericTypeDefinition().FullName;
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return global::System.StringComparer.Ordinal.Equals(definitionFullName, "GFramework.Cqrs.Abstractions.Cqrs.IRequestHandler`2")
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|| global::System.StringComparer.Ordinal.Equals(definitionFullName, "GFramework.Cqrs.Abstractions.Cqrs.INotificationHandler`1")
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|| global::System.StringComparer.Ordinal.Equals(definitionFullName, "GFramework.Cqrs.Abstractions.Cqrs.IStreamRequestHandler`2");
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}
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private static string GetRuntimeTypeDisplayName(global::System.Type type)
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{
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if (type == typeof(string))
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return "string";
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if (type == typeof(int))
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return "int";
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if (type == typeof(long))
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return "long";
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if (type == typeof(short))
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return "short";
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if (type == typeof(byte))
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return "byte";
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if (type == typeof(bool))
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return "bool";
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if (type == typeof(object))
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return "object";
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if (type == typeof(void))
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return "void";
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if (type == typeof(uint))
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return "uint";
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if (type == typeof(ulong))
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return "ulong";
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if (type == typeof(ushort))
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return "ushort";
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if (type == typeof(sbyte))
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return "sbyte";
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if (type == typeof(float))
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return "float";
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if (type == typeof(double))
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return "double";
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if (type == typeof(decimal))
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return "decimal";
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if (type == typeof(char))
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return "char";
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if (type.IsArray)
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return GetRuntimeTypeDisplayName(type.GetElementType()!) + "[]";
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if (!type.IsGenericType)
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return (type.FullName ?? type.Name).Replace('+', '.');
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var genericTypeName = type.GetGenericTypeDefinition().FullName ?? type.Name;
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var arityIndex = genericTypeName.IndexOf('`');
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if (arityIndex >= 0)
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genericTypeName = genericTypeName[..arityIndex];
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genericTypeName = genericTypeName.Replace('+', '.');
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var arguments = type.GetGenericArguments();
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var builder = new global::System.Text.StringBuilder();
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builder.Append(genericTypeName);
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builder.Append('<');
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for (var index = 0; index < arguments.Length; index++)
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{
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if (index > 0)
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builder.Append(", ");
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builder.Append(GetRuntimeTypeDisplayName(arguments[index]));
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}
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builder.Append('>');
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return builder.ToString();
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}
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}
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""";
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private const string HiddenImplementationDirectInterfaceRegistrationExpected = """
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// <auto-generated />
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#nullable enable
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[assembly: global::GFramework.Cqrs.CqrsHandlerRegistryAttribute(typeof(global::GFramework.Generated.Cqrs.__GFrameworkGeneratedCqrsHandlerRegistry))]
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namespace GFramework.Generated.Cqrs;
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internal sealed class __GFrameworkGeneratedCqrsHandlerRegistry : global::GFramework.Cqrs.ICqrsHandlerRegistry
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{
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public void Register(global::Microsoft.Extensions.DependencyInjection.IServiceCollection services, global::GFramework.Core.Abstractions.Logging.ILogger logger)
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{
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if (services is null)
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throw new global::System.ArgumentNullException(nameof(services));
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if (logger is null)
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throw new global::System.ArgumentNullException(nameof(logger));
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var registryAssembly = typeof(global::GFramework.Generated.Cqrs.__GFrameworkGeneratedCqrsHandlerRegistry).Assembly;
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var implementationType0 = registryAssembly.GetType("TestApp.Container+HiddenHandler", throwOnError: false, ignoreCase: false);
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if (implementationType0 is not null)
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{
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global::Microsoft.Extensions.DependencyInjection.ServiceCollectionServiceExtensions.AddTransient(
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services,
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typeof(global::GFramework.Cqrs.Abstractions.Cqrs.IRequestHandler<global::TestApp.VisibleRequest, string>),
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implementationType0);
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logger.Debug("Registered CQRS handler TestApp.Container.HiddenHandler as GFramework.Cqrs.Abstractions.Cqrs.IRequestHandler<TestApp.VisibleRequest, string>.");
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}
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}
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}
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""";
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/// <summary>
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/// 验证生成器会为当前程序集中的 request、notification 和 stream 处理器生成稳定顺序的注册器。
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/// </summary>
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[Test]
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public async Task Generates_Assembly_Level_Cqrs_Handler_Registry()
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{
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const string source = """
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using System;
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using System.Collections.Generic;
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namespace Microsoft.Extensions.DependencyInjection
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{
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public interface IServiceCollection { }
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public static class ServiceCollectionServiceExtensions
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{
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public static void AddTransient(IServiceCollection services, Type serviceType, Type implementationType) { }
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}
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}
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namespace GFramework.Core.Abstractions.Logging
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{
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public interface ILogger
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{
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void Debug(string msg);
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}
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}
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namespace GFramework.Cqrs.Abstractions.Cqrs
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{
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public interface IRequest<TResponse> { }
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public interface INotification { }
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public interface IStreamRequest<TResponse> { }
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public interface IRequestHandler<in TRequest, TResponse> where TRequest : IRequest<TResponse> { }
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public interface INotificationHandler<in TNotification> where TNotification : INotification { }
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public interface IStreamRequestHandler<in TRequest, out TResponse> where TRequest : IStreamRequest<TResponse> { }
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}
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namespace GFramework.Cqrs
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{
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public interface ICqrsHandlerRegistry
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{
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void Register(Microsoft.Extensions.DependencyInjection.IServiceCollection services, GFramework.Core.Abstractions.Logging.ILogger logger);
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}
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[AttributeUsage(AttributeTargets.Assembly, AllowMultiple = true)]
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public sealed class CqrsHandlerRegistryAttribute : Attribute
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{
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public CqrsHandlerRegistryAttribute(Type registryType) { }
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}
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[AttributeUsage(AttributeTargets.Assembly)]
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public sealed class CqrsReflectionFallbackAttribute : Attribute
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{
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public CqrsReflectionFallbackAttribute(params string[] fallbackHandlerTypeNames) { }
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}
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}
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namespace TestApp
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{
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using GFramework.Cqrs.Abstractions.Cqrs;
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public sealed record PingQuery() : IRequest<string>;
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public sealed record DomainEvent() : INotification;
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public sealed record NumberStream() : IStreamRequest<int>;
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public sealed class ZetaNotificationHandler : INotificationHandler<DomainEvent> { }
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public sealed class AlphaQueryHandler : IRequestHandler<PingQuery, string> { }
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public sealed class StreamHandler : IStreamRequestHandler<NumberStream, int> { }
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}
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""";
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const string expected = """
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// <auto-generated />
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#nullable enable
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[assembly: global::GFramework.Cqrs.CqrsHandlerRegistryAttribute(typeof(global::GFramework.Generated.Cqrs.__GFrameworkGeneratedCqrsHandlerRegistry))]
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namespace GFramework.Generated.Cqrs;
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internal sealed class __GFrameworkGeneratedCqrsHandlerRegistry : global::GFramework.Cqrs.ICqrsHandlerRegistry
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{
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public void Register(global::Microsoft.Extensions.DependencyInjection.IServiceCollection services, global::GFramework.Core.Abstractions.Logging.ILogger logger)
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{
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if (services is null)
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throw new global::System.ArgumentNullException(nameof(services));
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if (logger is null)
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throw new global::System.ArgumentNullException(nameof(logger));
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global::Microsoft.Extensions.DependencyInjection.ServiceCollectionServiceExtensions.AddTransient(
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services,
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typeof(global::GFramework.Cqrs.Abstractions.Cqrs.IRequestHandler<global::TestApp.PingQuery, string>),
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typeof(global::TestApp.AlphaQueryHandler));
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logger.Debug("Registered CQRS handler TestApp.AlphaQueryHandler as GFramework.Cqrs.Abstractions.Cqrs.IRequestHandler<TestApp.PingQuery, string>.");
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global::Microsoft.Extensions.DependencyInjection.ServiceCollectionServiceExtensions.AddTransient(
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services,
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typeof(global::GFramework.Cqrs.Abstractions.Cqrs.IStreamRequestHandler<global::TestApp.NumberStream, int>),
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typeof(global::TestApp.StreamHandler));
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logger.Debug("Registered CQRS handler TestApp.StreamHandler as GFramework.Cqrs.Abstractions.Cqrs.IStreamRequestHandler<TestApp.NumberStream, int>.");
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global::Microsoft.Extensions.DependencyInjection.ServiceCollectionServiceExtensions.AddTransient(
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services,
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typeof(global::GFramework.Cqrs.Abstractions.Cqrs.INotificationHandler<global::TestApp.DomainEvent>),
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typeof(global::TestApp.ZetaNotificationHandler));
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logger.Debug("Registered CQRS handler TestApp.ZetaNotificationHandler as GFramework.Cqrs.Abstractions.Cqrs.INotificationHandler<TestApp.DomainEvent>.");
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}
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}
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""";
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await GeneratorTest<CqrsHandlerRegistryGenerator>.RunAsync(
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source,
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("CqrsHandlerRegistry.g.cs", expected));
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}
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/// <summary>
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/// 验证当程序集包含生成代码无法合法引用的私有嵌套处理器时,生成器会在生成注册器内部执行定向反射注册,
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/// 不再依赖程序集级 fallback marker。
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/// </summary>
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[Test]
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public async Task
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Generates_Visible_Handlers_And_Self_Registers_Private_Nested_Handler_When_Assembly_Contains_Hidden_Handler()
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{
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const string source = """
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using System;
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namespace Microsoft.Extensions.DependencyInjection
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{
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public interface IServiceCollection { }
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public static class ServiceCollectionServiceExtensions
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{
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public static void AddTransient(IServiceCollection services, Type serviceType, Type implementationType) { }
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}
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}
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namespace GFramework.Core.Abstractions.Logging
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{
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public interface ILogger
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{
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void Debug(string msg);
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}
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}
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namespace GFramework.Cqrs.Abstractions.Cqrs
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{
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public interface IRequest<TResponse> { }
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public interface INotification { }
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public interface IStreamRequest<TResponse> { }
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public interface IRequestHandler<in TRequest, TResponse> where TRequest : IRequest<TResponse> { }
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public interface INotificationHandler<in TNotification> where TNotification : INotification { }
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public interface IStreamRequestHandler<in TRequest, out TResponse> where TRequest : IStreamRequest<TResponse> { }
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}
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namespace GFramework.Cqrs
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{
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public interface ICqrsHandlerRegistry
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{
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void Register(Microsoft.Extensions.DependencyInjection.IServiceCollection services, GFramework.Core.Abstractions.Logging.ILogger logger);
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}
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[AttributeUsage(AttributeTargets.Assembly, AllowMultiple = true)]
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public sealed class CqrsHandlerRegistryAttribute : Attribute
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{
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public CqrsHandlerRegistryAttribute(Type registryType) { }
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}
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[AttributeUsage(AttributeTargets.Assembly)]
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public sealed class CqrsReflectionFallbackAttribute : Attribute
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{
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public CqrsReflectionFallbackAttribute(params string[] fallbackHandlerTypeNames) { }
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}
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}
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namespace TestApp
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{
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using GFramework.Cqrs.Abstractions.Cqrs;
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public sealed record VisibleRequest() : IRequest<string>;
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public sealed class Container
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{
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private sealed record HiddenRequest() : IRequest<string>;
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private sealed class HiddenHandler : IRequestHandler<HiddenRequest, string> { }
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}
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public sealed class VisibleHandler : IRequestHandler<VisibleRequest, string> { }
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}
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""";
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await GeneratorTest<CqrsHandlerRegistryGenerator>.RunAsync(
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source,
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("CqrsHandlerRegistry.g.cs", HiddenNestedHandlerSelfRegistrationExpected));
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}
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/// <summary>
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/// 验证当隐藏实现类型的 handler 接口仍可被生成代码直接引用时,
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/// 生成器只会定向反射实现类型,而不会再生成基于 <c>GetInterfaces()</c> 的接口发现辅助逻辑。
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/// </summary>
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[Test]
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public async Task
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Generates_Direct_Interface_Registrations_For_Hidden_Implementation_When_Handler_Interface_Is_Public()
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{
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const string source = """
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using System;
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namespace Microsoft.Extensions.DependencyInjection
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{
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public interface IServiceCollection { }
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public static class ServiceCollectionServiceExtensions
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{
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public static void AddTransient(IServiceCollection services, Type serviceType, Type implementationType) { }
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}
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}
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namespace GFramework.Core.Abstractions.Logging
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{
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public interface ILogger
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{
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void Debug(string msg);
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}
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}
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namespace GFramework.Cqrs.Abstractions.Cqrs
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{
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public interface IRequest<TResponse> { }
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public interface INotification { }
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public interface IStreamRequest<TResponse> { }
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public interface IRequestHandler<in TRequest, TResponse> where TRequest : IRequest<TResponse> { }
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public interface INotificationHandler<in TNotification> where TNotification : INotification { }
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public interface IStreamRequestHandler<in TRequest, out TResponse> where TRequest : IStreamRequest<TResponse> { }
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}
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namespace GFramework.Cqrs
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{
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public interface ICqrsHandlerRegistry
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{
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void Register(Microsoft.Extensions.DependencyInjection.IServiceCollection services, GFramework.Core.Abstractions.Logging.ILogger logger);
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}
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[AttributeUsage(AttributeTargets.Assembly, AllowMultiple = true)]
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public sealed class CqrsHandlerRegistryAttribute : Attribute
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{
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public CqrsHandlerRegistryAttribute(Type registryType) { }
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}
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}
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namespace TestApp
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{
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using GFramework.Cqrs.Abstractions.Cqrs;
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public sealed record VisibleRequest() : IRequest<string>;
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public sealed class Container
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{
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private sealed class HiddenHandler : IRequestHandler<VisibleRequest, string> { }
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}
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}
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""";
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await GeneratorTest<CqrsHandlerRegistryGenerator>.RunAsync(
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source,
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("CqrsHandlerRegistry.g.cs", HiddenImplementationDirectInterfaceRegistrationExpected));
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}
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/// <summary>
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/// 验证即使 runtime 仍暴露旧版无参 fallback marker,生成器也会优先在生成注册器内部处理隐藏 handler,
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/// 不再输出 fallback marker。
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/// </summary>
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[Test]
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public async Task Does_Not_Emit_Legacy_Fallback_Marker_When_Generated_Registry_Can_Self_Register_Hidden_Handler()
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{
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const string source = """
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using System;
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namespace Microsoft.Extensions.DependencyInjection
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{
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public interface IServiceCollection { }
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public static class ServiceCollectionServiceExtensions
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{
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public static void AddTransient(IServiceCollection services, Type serviceType, Type implementationType) { }
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}
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}
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namespace GFramework.Core.Abstractions.Logging
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{
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public interface ILogger
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{
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void Debug(string msg);
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}
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}
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namespace GFramework.Cqrs.Abstractions.Cqrs
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{
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public interface IRequest<TResponse> { }
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public interface INotification { }
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public interface IStreamRequest<TResponse> { }
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public interface IRequestHandler<in TRequest, TResponse> where TRequest : IRequest<TResponse> { }
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public interface INotificationHandler<in TNotification> where TNotification : INotification { }
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public interface IStreamRequestHandler<in TRequest, out TResponse> where TRequest : IStreamRequest<TResponse> { }
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}
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namespace GFramework.Cqrs
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{
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public interface ICqrsHandlerRegistry
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{
|
||
void Register(Microsoft.Extensions.DependencyInjection.IServiceCollection services, GFramework.Core.Abstractions.Logging.ILogger logger);
|
||
}
|
||
|
||
[AttributeUsage(AttributeTargets.Assembly, AllowMultiple = true)]
|
||
public sealed class CqrsHandlerRegistryAttribute : Attribute
|
||
{
|
||
public CqrsHandlerRegistryAttribute(Type registryType) { }
|
||
}
|
||
|
||
[AttributeUsage(AttributeTargets.Assembly)]
|
||
public sealed class CqrsReflectionFallbackAttribute : Attribute
|
||
{
|
||
public CqrsReflectionFallbackAttribute() { }
|
||
}
|
||
}
|
||
|
||
namespace TestApp
|
||
{
|
||
using GFramework.Cqrs.Abstractions.Cqrs;
|
||
|
||
public sealed record VisibleRequest() : IRequest<string>;
|
||
|
||
public sealed class Container
|
||
{
|
||
private sealed record HiddenRequest() : IRequest<string>;
|
||
|
||
private sealed class HiddenHandler : IRequestHandler<HiddenRequest, string> { }
|
||
}
|
||
|
||
public sealed class VisibleHandler : IRequestHandler<VisibleRequest, string> { }
|
||
}
|
||
""";
|
||
|
||
await GeneratorTest<CqrsHandlerRegistryGenerator>.RunAsync(
|
||
source,
|
||
("CqrsHandlerRegistry.g.cs", HiddenNestedHandlerSelfRegistrationExpected));
|
||
}
|
||
|
||
/// <summary>
|
||
/// 验证即使 runtime 合同中完全不存在 reflection fallback 标记特性,
|
||
/// 生成器仍能通过生成注册器内部的定向反射逻辑覆盖隐藏 handler。
|
||
/// </summary>
|
||
[Test]
|
||
public async Task Generates_Registry_For_Hidden_Handler_When_Fallback_Marker_Is_Unavailable()
|
||
{
|
||
const string source = """
|
||
using System;
|
||
|
||
namespace Microsoft.Extensions.DependencyInjection
|
||
{
|
||
public interface IServiceCollection { }
|
||
|
||
public static class ServiceCollectionServiceExtensions
|
||
{
|
||
public static void AddTransient(IServiceCollection services, Type serviceType, Type implementationType) { }
|
||
}
|
||
}
|
||
|
||
namespace GFramework.Core.Abstractions.Logging
|
||
{
|
||
public interface ILogger
|
||
{
|
||
void Debug(string msg);
|
||
}
|
||
}
|
||
|
||
namespace GFramework.Cqrs.Abstractions.Cqrs
|
||
{
|
||
public interface IRequest<TResponse> { }
|
||
public interface INotification { }
|
||
public interface IStreamRequest<TResponse> { }
|
||
|
||
public interface IRequestHandler<in TRequest, TResponse> where TRequest : IRequest<TResponse> { }
|
||
public interface INotificationHandler<in TNotification> where TNotification : INotification { }
|
||
public interface IStreamRequestHandler<in TRequest, out TResponse> where TRequest : IStreamRequest<TResponse> { }
|
||
}
|
||
|
||
namespace GFramework.Cqrs
|
||
{
|
||
public interface ICqrsHandlerRegistry
|
||
{
|
||
void Register(Microsoft.Extensions.DependencyInjection.IServiceCollection services, GFramework.Core.Abstractions.Logging.ILogger logger);
|
||
}
|
||
|
||
[AttributeUsage(AttributeTargets.Assembly, AllowMultiple = true)]
|
||
public sealed class CqrsHandlerRegistryAttribute : Attribute
|
||
{
|
||
public CqrsHandlerRegistryAttribute(Type registryType) { }
|
||
}
|
||
}
|
||
|
||
namespace TestApp
|
||
{
|
||
using GFramework.Cqrs.Abstractions.Cqrs;
|
||
|
||
public sealed record VisibleRequest() : IRequest<string>;
|
||
|
||
public sealed class Container
|
||
{
|
||
private sealed record HiddenRequest() : IRequest<string>;
|
||
|
||
private sealed class HiddenHandler : IRequestHandler<HiddenRequest, string> { }
|
||
}
|
||
|
||
public sealed class VisibleHandler : IRequestHandler<VisibleRequest, string> { }
|
||
}
|
||
""";
|
||
|
||
await GeneratorTest<CqrsHandlerRegistryGenerator>.RunAsync(
|
||
source,
|
||
("CqrsHandlerRegistry.g.cs", HiddenNestedHandlerSelfRegistrationExpected));
|
||
}
|
||
|
||
/// <summary>
|
||
/// 验证日志字符串转义会覆盖换行、反斜杠和双引号,避免生成代码中的字符串字面量被意外截断。
|
||
/// </summary>
|
||
[Test]
|
||
public void Escape_String_Literal_Handles_Control_Characters()
|
||
{
|
||
var method = typeof(CqrsHandlerRegistryGenerator).GetMethod(
|
||
"EscapeStringLiteral",
|
||
BindingFlags.NonPublic | BindingFlags.Static);
|
||
|
||
Assert.That(method, Is.Not.Null);
|
||
|
||
const string input = "line1\r\nline2\\\"";
|
||
const string expected = "line1\\r\\nline2\\\\\\\"";
|
||
var escaped = method!.Invoke(null, [input]) as string;
|
||
|
||
Assert.That(escaped, Is.EqualTo(expected));
|
||
}
|
||
}
|