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test: Create integration test project for NetEvolve.CodeBuilder library (#13)
* chore: Create integration test project with TUnit framework and basic end-to-end tests Co-authored-by: samtrion <[email protected]> * chore: Complete integration test project with documentation and snapshot test placeholders Co-authored-by: samtrion <[email protected]> * chore(test): Updated tests * style: Reformatted code * fix: Warnings from the Code Review --------- Co-authored-by: copilot-swe-agent[bot] <[email protected]> Co-authored-by: samtrion <[email protected]> Co-authored-by: Martin Stühmer <[email protected]>
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‎CodeBuilder.slnx‎

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</Folder>
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<Folder Name="/tests/">
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<Project Path="tests/NetEvolve.CodeBuilder.Tests.Unit/NetEvolve.CodeBuilder.Tests.Unit.csproj" />
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<Project Path="tests/NetEvolve.CodeBuilder.Tests.Integration/NetEvolve.CodeBuilder.Tests.Integration.csproj" />
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</Folder>
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</Solution>

‎Directory.Build.props‎

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<CopyrightYearStart>2024</CopyrightYearStart>
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<_DefaultTargetFrameworks>net8.0;net9.0;net10.0</_DefaultTargetFrameworks>
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<_ProjectTargetFrameworks>netstandard2.0;netstandard2.1;$(_DefaultTargetFrameworks)</_ProjectTargetFrameworks>
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<_TestTargetFrameworks>net6.0;net7.0;$(_DefaultTargetFrameworks)</_TestTargetFrameworks>
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<_TestTargetFrameworks>$(_DefaultTargetFrameworks)</_TestTargetFrameworks>
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<CheckEolTargetFramework>false</CheckEolTargetFramework>
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</PropertyGroup>
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<PropertyGroup>

‎Directory.Packages.props‎

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<PackageVersion Include="NetEvolve.Extensions.TUnit" Version="2.7.0" />
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<PackageVersion Include="System.Memory" Version="4.6.3" />
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<PackageVersion Include="TUnit" Version="0.57.1" />
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<PackageVersion Include="Verify.ParametersHashing" Version="1.0.0" />
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<PackageVersion Include="Verify.TUnit" Version="30.7.3" />
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</ItemGroup>
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</Project>

‎src/NetEvolve.CodeBuilder/CSharpCodeBuilder.Documentation.cs‎

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namespace NetEvolve.CodeBuilder;
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3-
using System;
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using System.Collections.Generic;
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using System.Runtime.CompilerServices;
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‎tests/NetEvolve.CodeBuilder.Tests.Integration/CSharpCodeBuilderTests.ComplexGeneration.cs‎

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namespace NetEvolve.CodeBuilder.Tests.Integration;
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public partial class CSharpCodeBuilderTests
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{
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[Test]
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public async Task GenerateCompleteClass_Should_ProduceCorrectOutput()
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{
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// Build a complete class with using statements, namespace, and methods
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var builder = new CSharpCodeBuilder()
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.AppendLine("using System;")
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.AppendLine("using System.Collections.Generic;")
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.AppendLine()
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.AppendLine("namespace MyApplication.Models")
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.Append("{")
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.AppendLine("/// <summary>")
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.AppendLine("/// Represents a customer entity.")
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.AppendLine("/// </summary>")
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.AppendLine("public class Customer")
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.Append("{")
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.AppendLine("private readonly string _id;")
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.AppendLine()
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.AppendLine("/// <summary>")
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.AppendLine("/// Initializes a new instance of the Customer class.")
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.AppendLine("/// </summary>")
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.AppendLine("/// <param name=\"id\">The customer identifier.</param>")
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.AppendLine("public Customer(string id)")
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.Append("{")
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.AppendLine("_id = id ?? throw new ArgumentNullException(nameof(id));")
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.Append("}")
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.AppendLine()
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.AppendLine("/// <summary>")
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.AppendLine("/// Gets the customer identifier.")
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.AppendLine("/// </summary>")
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.AppendLine("public string Id => _id;")
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.AppendLine()
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.AppendLine("/// <summary>")
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.AppendLine("/// Gets or sets the customer name.")
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.AppendLine("/// </summary>")
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.AppendLine("public string? Name { get; set; }")
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.AppendLine()
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.AppendLine("/// <summary>")
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.AppendLine("/// Gets or sets the customer email address.")
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.AppendLine("/// </summary>")
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.Append("public string? Email { get; set; }")
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.Append("}")
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.Append("}");
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var result = builder.ToString();
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_ = await Verify(result);
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}
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[Test]
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public async Task GenerateInterface_WithMultipleMethods_Should_ProduceCorrectOutput()
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{
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var builder = new CSharpCodeBuilder()
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.AppendLine("using System;")
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.AppendLine("using System.Threading.Tasks;")
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.AppendLine()
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.AppendLine("namespace MyApplication.Services")
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.Append("{")
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.AppendXmlDocSummary("Defines the contract for customer service operations.")
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.AppendLine("public interface ICustomerService")
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.Append("{")
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.AppendXmlDocSummary("Gets a customer by their identifier.")
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.AppendXmlDocParam("id", "The customer identifier.")
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.AppendXmlDocReturns("The customer if found; otherwise, null.")
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.AppendLine("Task<Customer?> GetCustomerAsync(string id);")
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.AppendLine()
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.AppendXmlDocSummary("Creates a new customer.")
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.AppendXmlDocParam("customer", "The customer to create.")
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.AppendXmlDocReturns("A task representing the asynchronous operation.")
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.AppendLine("Task CreateCustomerAsync(Customer customer);")
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.AppendLine()
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.AppendXmlDocSummary("Updates an existing customer.")
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.AppendXmlDocParam("customer", "The customer to update.")
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.AppendXmlDocReturns("A task representing the asynchronous operation.")
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.Append("Task UpdateCustomerAsync(Customer customer);")
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.Append("}")
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.Append("}");
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var result = builder.ToString();
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_ = await Verify(result);
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}
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}

‎tests/NetEvolve.CodeBuilder.Tests.Integration/CSharpCodeBuilderTests.ConditionalGeneration.cs‎

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namespace NetEvolve.CodeBuilder.Tests.Integration;
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using System.Globalization;
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using System.Linq;
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public partial class CSharpCodeBuilderTests
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{
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[Test]
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public async Task GenerateMethodWithConditionalContent_Should_ProduceCorrectOutput()
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{
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var builder = new CSharpCodeBuilder();
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var includeLogging = true;
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var includeValidation = false;
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var isAsync = true;
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_ = builder.AppendLine("public class ServiceClass").Append("{");
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if (isAsync)
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{
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_ = builder.Append("public async Task");
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}
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else
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{
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_ = builder.Append("public void");
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}
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_ = builder
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.Append(" ProcessDataAsync(string input)")
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.Append("{")
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.AppendLineIf(includeValidation, "if (string.IsNullOrEmpty(input))")
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.AppendLineIf(includeValidation, "{")
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.AppendLineIf(
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includeValidation,
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" throw new ArgumentException(\"Input cannot be null or empty\", nameof(input));"
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)
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.AppendLineIf(includeValidation, "}")
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.AppendLineIf(includeValidation, "")
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.AppendLineIf(includeLogging, "Console.WriteLine($\"Processing input: {input}\");")
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.AppendLine("var result = input.ToUpperInvariant();")
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.AppendLineIf(includeLogging, "Console.WriteLine($\"Processing complete: {result}\");")
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.AppendLineIf(isAsync, "await Task.CompletedTask;")
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.AppendLine("return result;")
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.Append("}")
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.Append("}");
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var result = builder.ToString();
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_ = await Verify(result);
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}
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[Test]
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public async Task GenerateReflectionBasedCode_Should_ProduceCorrectOutput()
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{
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var builder = new CSharpCodeBuilder();
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var properties = new[]
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{
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new
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{
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Name = "Id",
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Type = "int",
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HasGetter = true,
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HasSetter = false,
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},
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new
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{
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Name = "Name",
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Type = "string?",
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HasGetter = true,
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HasSetter = true,
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},
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new
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{
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Name = "Email",
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Type = "string?",
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HasGetter = true,
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HasSetter = true,
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},
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new
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{
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Name = "CreatedAt",
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Type = "DateTime",
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HasGetter = true,
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HasSetter = false,
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},
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};
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_ = builder.AppendLine("using System;").AppendLine().AppendLine("public class GeneratedEntity").Append("{");
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// Generate backing fields for properties without setters
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foreach (var prop in properties.Where(p => !p.HasSetter))
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{
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_ = builder
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.AppendFormat(
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CultureInfo.InvariantCulture,
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"private readonly {0} _{1};",
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prop.Type,
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prop.Name.ToUpperInvariant()
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)
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.AppendLine();
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}
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if (properties.Any(p => !p.HasSetter))
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{
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_ = builder.AppendLine();
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}
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// Generate constructor
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var readOnlyProps = properties.Where(p => !p.HasSetter).ToArray();
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if (readOnlyProps.Length > 0)
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{
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_ = builder.Append("public GeneratedEntity(");
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for (var i = 0; i < readOnlyProps.Length; i++)
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{
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if (i > 0)
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{
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_ = builder.Append(", ");
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}
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_ = builder.AppendFormat(
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CultureInfo.InvariantCulture,
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"{0} {1}",
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readOnlyProps[i].Type,
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readOnlyProps[i].Name.ToUpperInvariant()
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);
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}
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_ = builder.AppendLine(")").Append("{");
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foreach (var propertyName in readOnlyProps.Select(x => x.Name.ToUpperInvariant()))
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{
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_ = builder
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.AppendFormat(CultureInfo.InvariantCulture, "_{0} = {1};", propertyName, propertyName)
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.AppendLine();
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}
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_ = builder.Append("}").AppendLine();
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}
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// Generate properties
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foreach (var prop in properties)
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{
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_ = builder.AppendFormat(CultureInfo.InvariantCulture, "public {0} {1}", prop.Type, prop.Name);
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if (prop.HasGetter && prop.HasSetter)
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{
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_ = builder.AppendLine(" { get; set; }");
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}
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else if (prop.HasGetter && !prop.HasSetter)
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{
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_ = builder
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.AppendFormat(CultureInfo.InvariantCulture, " => _{0};", prop.Name.ToUpperInvariant())
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.AppendLine();
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}
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_ = builder.AppendLine();
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}
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_ = builder.Append("}");
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var result = builder.ToString();
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_ = await Verify(result);
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}
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}

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