refactor(source-generators): 优化ContextAware生成器实现并添加快照测试

- 为ContextAwareGenerator添加详细的XML文档注释
- 简化接口验证逻辑，合并条件判断语句
- 修正特性数据参数命名，统一使用attr命名
- 为接口实现方法添加global::前缀以确保类型解析正确
- 移除未使用的回退方法体，简化方法实现逻辑
- 新增GeneratorSnapshotTest通用快照测试类
- 添加ContextAwareGeneratorSnapshotTests快照测试
- 移除原有的硬编码期望值测试方法
- 修正接口实现中的全局命名空间前缀格式

GFramework.SourceGenerators.Tests/GFramework.SourceGenerators.Tests.csproj

@@ -22,4 +22,8 @@
         <ProjectReference Include="..\GFramework.SourceGenerators\GFramework.SourceGenerators.csproj"/>
     </ItemGroup>
 
+    <ItemGroup>
+        <Folder Include="rule\snapshots\ContextAwareGenerator\"/>
+    </ItemGroup>
+
 </Project>

GFramework.SourceGenerators.Tests/core/GeneratorSnapshotTest.cs

@@ -0,0 +1,70 @@
+using Microsoft.CodeAnalysis.CSharp.Testing;
+using Microsoft.CodeAnalysis.Testing;
+using NUnit.Framework;
+
+namespace GFramework.SourceGenerators.Tests.core;
+
+/// <summary>
+/// 用于测试源代码生成器的快照测试类
+/// </summary>
+/// <typeparam name="TGenerator">要测试的源代码生成器类型</typeparam>
+public static class GeneratorSnapshotTest<TGenerator>
+    where TGenerator : new()
+{
+    /// <summary>
+    /// 运行源代码生成器的快照测试
+    /// </summary>
+    /// <param name="source">输入的源代码字符串</param>
+    /// <param name="snapshotFolder">快照文件存储的文件夹路径</param>
+    /// <returns>异步任务</returns>
+    public static async Task RunAsync(
+        string source,
+        string snapshotFolder)
+    {
+        var test = new CSharpSourceGeneratorTest<TGenerator, DefaultVerifier>
+        {
+            TestState =
+            {
+                Sources = { source }
+            },
+            TestBehaviors = TestBehaviors.SkipGeneratedSourcesCheck,
+            DisabledDiagnostics = { "GF_Common_Trace_001" }
+        };
+
+        await test.RunAsync();
+
+        var generated = test.TestState.GeneratedSources;
+
+        foreach (var (filename, content) in generated)
+        {
+            var path = Path.Combine(
+                snapshotFolder,
+                filename);
+
+            if (!File.Exists(path))
+            {
+                // 第一次运行：生成 snapshot
+                Directory.CreateDirectory(Path.GetDirectoryName(path)!);
+                await File.WriteAllTextAsync(path, content.ToString());
+
+                Assert.Fail(
+                    $"Snapshot not found. Generated new snapshot at:\n{path}");
+            }
+
+            var expected = await File.ReadAllTextAsync(path);
+
+            Assert.That(
+                Normalize(expected),
+                Is.EqualTo(Normalize(content.ToString())),
+                $"Snapshot mismatch: {filename}");
+        }
+    }
+
+    /// <summary>
+    /// 标准化文本内容，将换行符统一为\n并去除首尾空白
+    /// </summary>
+    /// <param name="text">要标准化的文本</param>
+    /// <returns>标准化后的文本</returns>
+    private static string Normalize(string text)
+        => text.Replace("\r\n", "\n").Trim();
+}

GFramework.SourceGenerators.Tests/rule/ContextAwareGeneratorSnapshotTests.cs

@@ -0,0 +1,69 @@
+using GFramework.SourceGenerators.rule;
+using GFramework.SourceGenerators.Tests.core;
+using NUnit.Framework;
+
+namespace GFramework.SourceGenerators.Tests.rule;
+
+/// <summary>
+/// 上下文感知生成器快照测试类
+/// 用于测试ContextAwareGenerator源代码生成器的输出快照
+/// </summary>
+[TestFixture]
+public class ContextAwareGeneratorSnapshotTests
+{
+    /// <summary>
+    /// 测试ContextAwareGenerator源代码生成器的快照功能
+    /// 验证生成器对带有ContextAware特性的类的处理结果
+    /// </summary>
+    /// <returns>异步任务，无返回值</returns>
+    [Test]
+    public async Task Snapshot_ContextAwareGenerator()
+    {
+        // 定义测试用的源代码，包含ContextAware特性和相关接口定义
+        const string source = """
+                              using System;
+
+                              namespace GFramework.SourceGenerators.Abstractions.rule
+                              {
+                                  [AttributeUsage(AttributeTargets.Class)]
+                                  public sealed class ContextAwareAttribute : Attribute { }
+                              }
+
+                              namespace GFramework.Core.Abstractions.rule
+                              {
+                                  public interface IContextAware
+                                  {
+                                      void SetContext(
+                                          GFramework.Core.Abstractions.architecture.IArchitectureContext context);
+
+                                      GFramework.Core.Abstractions.architecture.IArchitectureContext GetContext();
+                                  }
+                              }
+
+                              namespace GFramework.Core.Abstractions.architecture
+                              {
+                                  public interface IArchitectureContext { }
+                              }
+
+                              namespace TestApp
+                              {
+                                  using GFramework.SourceGenerators.Abstractions.rule;
+                                  using GFramework.Core.Abstractions.rule;
+
+                                  [ContextAware]
+                                  public partial class MyRule : IContextAware
+                                  {
+                                  }
+                              }
+                              """;
+
+        // 执行生成器快照测试，将生成的代码与预期快照进行比较
+        await GeneratorSnapshotTest<ContextAwareGenerator>.RunAsync(
+            source,
+            snapshotFolder: Path.Combine(
+                TestContext.CurrentContext.TestDirectory,
+                "rule",
+                "snapshots",
+                "ContextAwareGenerator"));
+    }
+}

GFramework.SourceGenerators.Tests/rule/ContextAwareGeneratorTests.cs

@@ -1,4 +1,4 @@
-using GFramework.SourceGenerators.rule;
+using GFramework.SourceGenerators.rule;
 using GFramework.SourceGenerators.Tests.core;
 using NUnit.Framework;
 
@@ -7,83 +7,6 @@ namespace GFramework.SourceGenerators.Tests.rule;
 [TestFixture]
 public class ContextAwareGeneratorTests
 {
-    [Test]
-    public async Task Generates_ContextAware_Code()
-    {
-        const string source = """
-                              using System;
-
-                              namespace GFramework.SourceGenerators.Abstractions.rule
-                              {
-                                  [AttributeUsage(AttributeTargets.Class)]
-                                  public sealed class ContextAwareAttribute : Attribute
-                                  {
-                                  }
-                              }
-
-                              namespace TestApp
-                              {
-                                  using GFramework.SourceGenerators.Abstractions.rule;
-
-                                  [ContextAware]
-                                  public partial class MyRule
-                                      : GFramework.Core.Abstractions.rule.IContextAware
-                                  {
-                                  }
-                              }
-                              """;
-
-        const string frameworkStub = """
-                                     namespace GFramework.Core.Abstractions.rule
-                                     {
-                                         public interface IContextAware
-                                         {
-                                             void SetContext(
-                                                 GFramework.Core.Abstractions.architecture.IArchitectureContext context);
-
-                                             GFramework.Core.Abstractions.architecture.IArchitectureContext GetContext();
-                                         }
-                                     }
-
-                                     namespace GFramework.Core.Abstractions.architecture
-                                     {
-                                         public interface IArchitectureContext {}
-                                     }
-                                     """;
-
-        const string expected = """
-                                // <auto-generated/>
-                                #nullable enable
-
-                                namespace TestApp;
-
-                                partial class MyRule
-                                {
-                                    /// <summary>
-                                    /// 自动注入的架构上下文
-                                    /// </summary>
-                                    protected GFramework.Core.Abstractions.architecture.IArchitectureContext Context { get; private set; } = null!;
-
-                                    void global::GFramework.Core.Abstractions.rule.IContextAware.SetContext(
-                                        global::GFramework.Core.Abstractions.architecture.IArchitectureContext context)
-                                    {
-                                        Context = context;
-                                    }
-
-                                    global::GFramework.Core.Abstractions.architecture.IArchitectureContext
-                                        global::GFramework.Core.Abstractions.rule.IContextAware.GetContext()
-                                    {
-                                        return Context;
-                                    }
-                                }
-                                """;
-
-        await GeneratorTest<ContextAwareGenerator>.RunAsync(
-            source + "\n" + frameworkStub,
-            ("MyRule.ContextAware.g.cs", expected)
-        );
-    }
-
     [Test]
     public async Task Generates_ContextAware_Code_When_Interface_Inherits_IContextAware()
     {
@@ -145,20 +68,20 @@ public class ContextAwareGeneratorTests
                                     /// </summary>
                                     protected GFramework.Core.Abstractions.architecture.IArchitectureContext Context { get; private set; } = null!;
 
-                                    void GFramework.Core.Abstractions.rule.IContextAware.SetContext(
+                                    void global::GFramework.Core.Abstractions.rule.IContextAware.SetContext(global::GFramework.Core.Abstractions.architecture.IArchitectureContext context)
-                                        GFramework.Core.Abstractions.architecture.IArchitectureContext context)
                                     {
                                         Context = context;
                                     }
 
-                                    GFramework.Core.Abstractions.architecture.IArchitectureContext
+                                    global::GFramework.Core.Abstractions.architecture.IArchitectureContext global::GFramework.Core.Abstractions.rule.IContextAware.GetContext()
-                                        GFramework.Core.Abstractions.rule.IContextAware.GetContext()
                                     {
                                         return Context;
                                     }
+
                                 }
                                 """;
 
+
         await GeneratorTest<ContextAwareGenerator>.RunAsync(
             source + "\n" + frameworkStub,
             ("MyRule.ContextAware.g.cs", expected)

GFramework.SourceGenerators/rule/ContextAwareGenerator.cs

@@ -8,14 +8,32 @@ using Microsoft.CodeAnalysis.CSharp.Syntax;
 
 namespace GFramework.SourceGenerators.rule;
 
+/// <summary>
+/// 上下文感知生成器，用于为标记了ContextAware特性的类自动生成IContextAware接口实现
+/// </summary>
 [Generator]
 public sealed class ContextAwareGenerator : MetadataAttributeClassGeneratorBase
 {
+    /// <summary>
+    /// 获取特性的元数据名称
+    /// </summary>
     protected override string AttributeMetadataName =>
         $"{PathContests.SourceGeneratorsAbstractionsPath}.rule.ContextAwareAttribute";
 
+    /// <summary>
+    /// 获取特性的短名称（不包含后缀）
+    /// </summary>
     protected override string AttributeShortNameWithoutSuffix => "ContextAware";
 
+    /// <summary>
+    /// 验证符号是否符合生成条件
+    /// </summary>
+    /// <param name="context">源生产上下文</param>
+    /// <param name="compilation">编译对象</param>
+    /// <param name="syntax">类声明语法节点</param>
+    /// <param name="symbol">命名类型符号</param>
+    /// <param name="attr">特性数据</param>
+    /// <returns>验证是否通过</returns>
     protected override bool ValidateSymbol(
         SourceProductionContext context,
         Compilation compilation,
@@ -26,16 +44,8 @@ public sealed class ContextAwareGenerator : MetadataAttributeClassGeneratorBase
         var iContextAware = compilation.GetTypeByMetadataName(
             $"{PathContests.CoreAbstractionsNamespace}.rule.IContextAware");
 
-        if (iContextAware is null)
+        if (iContextAware is null ||
-        {
+            !symbol.AllInterfaces.Any(i =>
-            context.ReportDiagnostic(Diagnostic.Create(
-                ContextAwareDiagnostic.ClassMustImplementIContextAware,
-                syntax.Identifier.GetLocation(),
-                symbol.Name));
-            return false;
-        }
-
-        if (!symbol.AllInterfaces.Any(i =>
                 SymbolEqualityComparer.Default.Equals(i, iContextAware)))
         {
             context.ReportDiagnostic(Diagnostic.Create(
@@ -49,12 +59,12 @@ public sealed class ContextAwareGenerator : MetadataAttributeClassGeneratorBase
     }
 
     /// <summary>
-    ///     生成源代码
+    /// 生成源代码
     /// </summary>
     /// <param name="context">源生产上下文</param>
     /// <param name="compilation">编译对象</param>
     /// <param name="symbol">命名类型符号</param>
-    /// <param name="attr">属性数据</param>
+    /// <param name="attr">特性数据</param>
     /// <returns>生成的源代码字符串</returns>
     protected override string Generate(
         SourceProductionContext context,
@@ -65,8 +75,9 @@ public sealed class ContextAwareGenerator : MetadataAttributeClassGeneratorBase
         var ns = symbol.ContainingNamespace.IsGlobalNamespace
             ? null
             : symbol.ContainingNamespace.ToDisplayString();
+
         var iContextAware = compilation.GetTypeByMetadataName(
-            $"{PathContests.CoreAbstractionsNamespace}.rule.IContextAware");
+            $"{PathContests.CoreAbstractionsNamespace}.rule.IContextAware")!;
 
         var sb = new StringBuilder();
         sb.AppendLine("// <auto-generated/>");
@@ -83,18 +94,27 @@ public sealed class ContextAwareGenerator : MetadataAttributeClassGeneratorBase
         sb.AppendLine("{");
 
         GenerateContextProperty(sb);
-        GenerateInterfaceImplementations(sb, iContextAware!);
+        GenerateInterfaceImplementations(sb, iContextAware);
 
         sb.AppendLine("}");
         return sb.ToString().TrimEnd();
     }
 
+    /// <summary>
+    /// 获取生成文件的提示名称
+    /// </summary>
+    /// <param name="symbol">命名类型符号</param>
+    /// <returns>生成文件的提示名称</returns>
     protected override string GetHintName(INamedTypeSymbol symbol)
         => $"{symbol.Name}.ContextAware.g.cs";
 
     // =========================
-    // 生成 Context 属性
+    // Context 属性（无 global::，与测试一致）
     // =========================
+    /// <summary>
+    /// 生成Context属性
+    /// </summary>
+    /// <param name="sb">字符串构建器</param>
     private static void GenerateContextProperty(StringBuilder sb)
     {
         sb.AppendLine("    /// <summary>");
@@ -106,28 +126,39 @@ public sealed class ContextAwareGenerator : MetadataAttributeClassGeneratorBase
     }
 
     // =========================
-    // 自动实现接口方法
+    // 显式接口实现（使用 global::）
     // =========================
+    /// <summary>
+    /// 生成接口实现
+    /// </summary>
+    /// <param name="sb">字符串构建器</param>
+    /// <param name="interfaceSymbol">接口符号</param>
     private static void GenerateInterfaceImplementations(
         StringBuilder sb,
         INamedTypeSymbol interfaceSymbol)
     {
-        var interfaceFullName = interfaceSymbol.ToDisplayString(
+        var interfaceName = interfaceSymbol.ToDisplayString(
             SymbolDisplayFormat.FullyQualifiedFormat);
 
-        foreach (var member in interfaceSymbol.GetMembers().OfType<IMethodSymbol>())
+        foreach (var method in interfaceSymbol.GetMembers().OfType<IMethodSymbol>())
         {
-            if (member.MethodKind != MethodKind.Ordinary)
+            if (method.MethodKind != MethodKind.Ordinary)
                 continue;
 
-            GenerateMethod(sb, interfaceFullName, member);
+            GenerateMethod(sb, interfaceName, method);
             sb.AppendLine();
         }
     }
 
+    /// <summary>
+    /// 生成方法实现
+    /// </summary>
+    /// <param name="sb">字符串构建器</param>
+    /// <param name="interfaceName">接口名称</param>
+    /// <param name="method">方法符号</param>
     private static void GenerateMethod(
         StringBuilder sb,
-        string interfaceFullName,
+        string interfaceName,
         IMethodSymbol method)
     {
         var returnType = method.ReturnType.ToDisplayString(
@@ -138,16 +169,19 @@ public sealed class ContextAwareGenerator : MetadataAttributeClassGeneratorBase
                 $"{p.Type.ToDisplayString(SymbolDisplayFormat.FullyQualifiedFormat)} {p.Name}"));
 
         sb.AppendLine(
-            $"    {returnType} {interfaceFullName}.{method.Name}({parameters})");
+            $"    {returnType} {interfaceName}.{method.Name}({parameters})");
-
         sb.AppendLine("    {");
+
         GenerateMethodBody(sb, method);
+
         sb.AppendLine("    }");
     }
 
-    // =========================
+    /// <summary>
-    // 方法语义策略
+    /// 生成方法体
-    // =========================
+    /// </summary>
+    /// <param name="sb">字符串构建器</param>
+    /// <param name="method">方法符号</param>
     private static void GenerateMethodBody(
         StringBuilder sb,
         IMethodSymbol method)
@@ -163,25 +197,13 @@ public sealed class ContextAwareGenerator : MetadataAttributeClassGeneratorBase
                 break;
 
             default:
-                GenerateFallbackBody(sb, method);
+                if (!method.ReturnsVoid)
+                {
+                    sb.AppendLine(
+                        $"        throw new System.NotImplementedException(\"Method '{method.Name}' is not supported.\");");
+                }
+
                 break;
         }
     }
-
-    private static void GenerateFallbackBody(
-        StringBuilder sb,
-        IMethodSymbol method)
-    {
-        if (method.ReturnsVoid)
-        {
-            sb.AppendLine("        // no-op");
-        }
-        else
-        {
-            sb.AppendLine(
-                $"        throw new System.NotImplementedException(");
-            sb.AppendLine(
-                $"            \"Method '{method.Name}' is not supported by ContextAwareGenerator.\");");
-        }
-    }
 }