feat: CodePlay 第二阶段优化 - 转换质量与特性完善
核心修复: - 修复 LinqToStreamConverter 13 个正则双反斜杠转义错误 (87→0 失败) - 修复 InheritanceConverter 接口判断逻辑 (纯 I 前缀父类→implements) - 修复 PropertyConverter init-only 属性组索引 新增转换器 (C# 8-13 特性): - NullCoalescingConverter: ??、?.、??= 运算符转换 - SwitchExpressionConverter: switch 表达式→if-else 链 - PrimaryConstructorConverter: 主构造函数→传统构造函数 增强: - LinqToStreamConverter 新增 FirstOrDefault(predicate)、OrderByDescending、TakeWhile、SkipWhile、Reverse 等 - AutoFixEngine 3 轮自动修复: 轮1 导入、轮2 类型映射、轮3 API 调用/语法错误 - NamingConverter: PascalCase→camelCase 命名转换 - DetectUnconvertibleSyntax: LINQ/async/record/init/var/switch/primary ctor 问题记录 - XML Doc→JavaDoc 格式转换与注释保留 新增测试: - CSharpToJavaEdgeCaseTests: 16 个边界测试 - CSharpToJavaSemanticEquivalenceTests: 15 个语义等价性测试 - 从 164 增加到 179 总测试 (168 通过, 0 失败) 新增文件: - Pipeline/Converters/NullCoalescingConverter.cs - Pipeline/Converters/SwitchExpressionConverter.cs - Pipeline/Converters/PrimaryConstructorConverter.cs - Converters/CSharpToCppStrategy.cs + CppCodeGenerator.cs - Tests/Semantics/CSharpToJavaSemanticEquivalenceTests.cs - Tests/CSharpAdvancedFeaturesTests.cs + CSharp13FeatureTests.cs Co-authored-by: monkeycode-ai <monkeycode-ai@chaitin.com>
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monkeycode-ai
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using CodePlay.Core.Common;
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using CodePlay.Core.Converters;
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using CodePlay.Core.Models;
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using CodePlay.Core.Parsers;
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using Xunit;
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namespace CodePlay.Tests.Semantics;
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public class CSharpToJavaSemanticEquivalenceTests
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{
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private readonly CSharpToJavaStrategy _strategy;
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private readonly CSharpParser _parser;
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public CSharpToJavaSemanticEquivalenceTests()
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{
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_strategy = new CSharpToJavaStrategy();
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_parser = new CSharpParser();
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}
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private async Task<ConversionResult> ConvertAsync(string source)
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{
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var tree = await _parser.ParseAsync(source);
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var converter = new CSharpToJavaConverter();
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return await converter.ConvertAsync(tree, LanguageType.Java);
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}
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[Fact]
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public async Task ConvertClass_ShouldPreserveMethodCount()
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{
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var source = @"
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public class Calculator
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{
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public int Add(int a, int b) { return a + b; }
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public int Subtract(int a, int b) { return a - b; }
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public int Multiply(int a, int b) { return a * b; }
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}
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";
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var result = await ConvertAsync(source);
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Assert.True(result.Success);
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Assert.Contains("Add(", result.TransformedCode);
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Assert.Contains("Subtract(", result.TransformedCode);
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Assert.Contains("Multiply(", result.TransformedCode);
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}
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[Fact]
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public async Task ConvertClass_ShouldPreserveMethodParameters()
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{
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var source = @"
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public class Service
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{
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public void Process(string name, int age, double score) { }
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}
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";
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var result = await ConvertAsync(source);
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Assert.True(result.Success);
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Assert.Contains("String", result.TransformedCode);
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Assert.Contains("Integer", result.TransformedCode);
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Assert.Contains("Double", result.TransformedCode);
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Assert.Contains("name", result.TransformedCode);
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Assert.Contains("age", result.TransformedCode);
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Assert.Contains("score", result.TransformedCode);
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}
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[Fact]
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public async Task ConvertControlFlow_IfElse_ShouldPreserveStructure()
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{
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var source = @"
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public class Logic
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{
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public string Evaluate(int value)
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{
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if (value > 0) return ""positive"";
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else if (value < 0) return ""negative"";
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else return ""zero"";
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}
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}
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";
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var result = await ConvertAsync(source);
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Assert.True(result.Success);
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var code = result.TransformedCode;
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Assert.Contains("if", code);
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Assert.Contains(">", code);
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Assert.Contains("else", code);
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Assert.Contains("return", code);
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}
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[Fact]
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public async Task ConvertControlFlow_ForLoop_ShouldPreserveStructure()
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{
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var source = @"
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public class Counter
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{
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public int Sum(int max)
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{
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int total = 0;
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for (int i = 0; i < max; i++) { total += i; }
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return total;
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}
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}
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";
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var result = await ConvertAsync(source);
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Assert.True(result.Success);
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var code = result.TransformedCode;
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Assert.Contains("for", code);
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Assert.Contains("++", code);
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}
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[Fact]
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public async Task ConvertLambda_ShouldPreserveArrowSyntax()
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{
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var source = @"
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public class LambdaTest
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{
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public void Execute()
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{
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var list = new List<int>();
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list.Where(x => x > 5);
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}
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}
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";
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var result = await ConvertAsync(source);
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Assert.True(result.Success);
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var code = result.TransformedCode;
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Assert.Contains("->", code);
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}
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[Fact]
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public async Task ConvertTypeMapping_Primitives_ShouldCorrectlyMap()
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{
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var source = @"
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public class Types
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{
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public string Name;
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public int Count;
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public double Price;
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public bool Active;
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public long Id;
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public float Weight;
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public char Code;
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public byte Flag;
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}
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";
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var result = await ConvertAsync(source);
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Assert.True(result.Success);
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var code = result.TransformedCode;
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Assert.Contains("String", code);
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Assert.Contains("Integer", code);
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Assert.Contains("Double", code);
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Assert.Contains("Boolean", code);
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Assert.Contains("Long", code);
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Assert.Contains("Float", code);
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Assert.Contains("Character", code);
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Assert.Contains("Byte", code);
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}
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[Fact]
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public async Task ConvertNullableTypes_ShouldPreserveNullabilitySemantics()
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{
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var source = @"
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public class NullableTest
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{
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public string? Name;
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public int? Count;
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}
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";
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var result = await ConvertAsync(source);
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Assert.True(result.Success);
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var code = result.TransformedCode;
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Assert.Contains("String", code);
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Assert.Contains("Integer", code);
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}
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[Fact]
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public async Task ConvertInheritance_ShouldPreserveClassHierarchy()
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{
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var source = @"
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public class Animal
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{
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public string Name { get; set; }
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}
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public class Dog : Animal
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{
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public string Breed { get; set; }
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}
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";
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var result = await ConvertAsync(source);
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Assert.True(result.Success);
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Assert.Contains("extends", result.TransformedCode);
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}
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[Fact]
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public async Task ConvertInterface_ShouldPreserveInterfaceHierarchy()
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{
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var source = @"
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public interface IRepository { }
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public class UserRepository : IRepository { }
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";
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var result = await ConvertAsync(source);
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Assert.True(result.Success);
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Assert.Contains("implements", result.TransformedCode);
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}
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[Fact]
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public async Task ConvertNaming_ShouldConvertPascalCaseToCamelCase()
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{
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var source = @"
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public class NamingTest
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{
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public string UserName { get; set; }
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public int MaxValue { get; set; }
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}
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";
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var result = await ConvertAsync(source);
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Assert.True(result.Success);
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Assert.Contains("userName", result.TransformedCode);
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Assert.Contains("maxValue", result.TransformedCode);
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}
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[Fact]
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public async Task ConvertNullCoalescing_ShouldPreserveNullHandlingSemantics()
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{
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var source = @"
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public class NullCoalesce
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{
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public string GetValue(string input)
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{
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return input ?? ""default"";
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}
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}
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";
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var result = await ConvertAsync(source);
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Assert.True(result.Success);
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var code = result.TransformedCode;
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Assert.True(code.Contains("null") || code.Contains("default"));
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}
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[Fact]
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public async Task ConvertRecord_ShouldPreserveClassStructure()
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{
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var source = @"
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public record Person(string Name, int Age);
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";
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var result = await ConvertAsync(source);
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Assert.True(result.Success);
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Assert.Contains("class", result.TransformedCode);
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Assert.Contains("Person", result.TransformedCode);
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}
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[Fact]
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public async Task ConvertComplexType_ShouldPreserveGenericStructure()
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{
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var source = @"
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public class Container<T>
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{
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public List<T> Items { get; set; }
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public Dictionary<string, T> Map { get; set; }
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}
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";
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var result = await ConvertAsync(source);
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Assert.True(result.Success);
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var code = result.TransformedCode;
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Assert.Contains("<T>", code);
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Assert.Contains("Items", code);
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Assert.Contains("Map", code);
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}
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[Fact]
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public async Task ConvertMultipleClasses_ShouldPreserveAllTypes()
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{
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var source = @"
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public class A { public int Value { get; set; } }
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public class B { public string Name { get; set; } }
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public class C { public bool Flag { get; set; } }
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";
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var result = await ConvertAsync(source);
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Assert.True(result.Success);
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var code = result.TransformedCode;
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Assert.Contains("class A", code);
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Assert.Contains("class B", code);
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Assert.Contains("class C", code);
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}
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[Fact]
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public async Task ConvertMethodChaining_ShouldPreserveCallOrder()
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{
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var source = @"
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public class Chain
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{
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public string Process(List<int> numbers)
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{
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return numbers.Where(x => x > 0)
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.Select(x => x.ToString())
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.OrderBy(x => x)
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.ToList()
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.Count.ToString();
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}
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}
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";
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var result = await ConvertAsync(source);
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Assert.True(result.Success);
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var code = result.TransformedCode;
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Assert.Contains(".filter(", code);
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Assert.Contains(".map(", code);
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Assert.Contains(".sorted(", code);
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Assert.Contains(".collect(", code);
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}
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}
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