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Implement bug reproduction simplification feature
Added comprehensive bug reproduction simplification system that analyzes repositories to identify minimal code needed to reproduce bugs: - Added SimplifyBugReproductionTrigger that responds to issue titles containing "simplify bug reproduction", "minimize reproduction", or "reduce bug example" - Implemented BugReproductionAnalyzer with static code analysis capabilities: * Identifies entry points (main files, tests, configs) * Maps dependencies between files using import/using statements * Analyzes bug reports for file/method references * Builds dependency graphs to find critical code paths * Calculates confidence scores and generates warnings - Added support for multiple programming languages (C#, JS, TS, Python, Java) - Created automated branch creation with simplified codebase - Added comprehensive test coverage with unit tests - Created detailed usage documentation and examples The system generates detailed reports showing which files were kept/removed with explanations, helping developers focus on essential bug reproduction code. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]>
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‎csharp/Platform.Bot.Tests/BugReproductionAnalyzerTests.cs‎

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using System.Collections.Generic;
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using System.Threading.Tasks;
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using Xunit;
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using Octokit;
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using Storage.Analysis;
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namespace Platform.Bot.Tests
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{
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public class BugReproductionAnalyzerTests
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{
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private readonly BugReproductionAnalyzer _analyzer;
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public BugReproductionAnalyzerTests()
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{
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_analyzer = new BugReproductionAnalyzer();
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}
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[Fact]
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public async Task AnalyzeBugReproduction_WithMainFile_IdentifiesAsEntryPoint()
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{
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// Arrange
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var files = new List<RepositoryFile>
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{
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new RepositoryFile
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{
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Path = "Program.cs",
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Content = "using System;\n\nclass Program\n{\n static void Main(string[] args)\n {\n Console.WriteLine(\"Hello World!\");\n }\n}",
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IsEntryPoint = true
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}
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};
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var issue = CreateMockIssue("Test bug", "This is a test bug description");
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// Act
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var result = await _analyzer.AnalyzeBugReproduction(files, issue);
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// Assert
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Assert.Contains("Program.cs", result.EntryPoints);
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Assert.Contains("Program.cs", result.CriticalFiles);
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}
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[Fact]
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public async Task AnalyzeBugReproduction_WithTestFile_IdentifiesAsTestFile()
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{
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// Arrange
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var files = new List<RepositoryFile>
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{
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new RepositoryFile
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{
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Path = "Tests/BugTest.cs",
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Content = "[Test]\npublic void TestBug()\n{\n // Test code\n}",
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IsTestFile = true
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}
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};
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var issue = CreateMockIssue("Test bug", "This is a test bug description");
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// Act
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var result = await _analyzer.AnalyzeBugReproduction(files, issue);
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// Assert
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Assert.Contains("Tests/BugTest.cs", result.TestFiles);
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Assert.Contains("Tests/BugTest.cs", result.CriticalFiles);
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}
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[Fact]
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public async Task AnalyzeBugReproduction_WithFileReferencedInBugReport_IdentifiesAsCritical()
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{
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// Arrange
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var files = new List<RepositoryFile>
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{
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new RepositoryFile
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{
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Path = "BuggyClass.cs",
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Content = "public class BuggyClass\n{\n public void ProblematicMethod()\n {\n throw new Exception(\"Bug!\");\n }\n}"
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}
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};
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var issue = CreateMockIssue("Bug in BuggyClass", "The BuggyClass.cs file contains a problematic method that throws an exception");
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// Act
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var result = await _analyzer.AnalyzeBugReproduction(files, issue);
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// Assert
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Assert.Contains("BuggyClass.cs", result.CriticalFiles);
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Assert.Contains("BuggyClass.cs", result.FileReasons.Keys);
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}
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[Fact]
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public async Task SimplifyCodebase_RemovesNonCriticalFiles()
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{
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// Arrange
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var originalFiles = new List<RepositoryFile>
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{
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new RepositoryFile { Path = "Program.cs", Content = "static void Main() {}", IsEntryPoint = true },
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new RepositoryFile { Path = "README.md", Content = "# Documentation" },
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new RepositoryFile { Path = "Examples/Sample.cs", Content = "// Example code" }
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};
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var analysisResult = new BugAnalysisResult();
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analysisResult.CriticalFiles.Add("Program.cs");
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analysisResult.RemovedFiles.Add("README.md");
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analysisResult.RemovedFiles.Add("Examples/Sample.cs");
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// Act
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var simplifiedFiles = await _analyzer.SimplifyCodebase(originalFiles, analysisResult);
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// Assert
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Assert.Single(simplifiedFiles);
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Assert.Contains(simplifiedFiles, f => f.Path == "Program.cs");
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Assert.DoesNotContain(simplifiedFiles, f => f.Path == "README.md");
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Assert.DoesNotContain(simplifiedFiles, f => f.Path == "Examples/Sample.cs");
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}
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[Fact]
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public async Task AnalyzeBugReproduction_WithMultipleFiles_CalculatesConfidenceScore()
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{
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// Arrange
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var files = new List<RepositoryFile>
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{
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new RepositoryFile
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{
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Path = "Program.cs",
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Content = "static void Main() {}",
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IsEntryPoint = true
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},
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new RepositoryFile
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{
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Path = "Tests/UnitTest.cs",
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Content = "[Test] public void TestMethod() {}",
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IsTestFile = true
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},
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new RepositoryFile
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{
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Path = "README.md",
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Content = "# Documentation"
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}
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};
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var issue = CreateMockIssue("Test issue", "Test description");
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// Act
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var result = await _analyzer.AnalyzeBugReproduction(files, issue);
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// Assert
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Assert.True(result.ConfidenceScore >= 0.0 && result.ConfidenceScore <= 1.0);
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Assert.True(result.ConfidenceScore > 0.8); // Should be high confidence with entry point and test file
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}
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private Issue CreateMockIssue(string title, string body)
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{
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// Create a mock issue for testing
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// Note: In a real implementation, you'd want to use a proper mocking framework
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// For this simple test, we'll create a minimal implementation
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return new Issue(
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url: "https://github.com/test/repo/issues/1",
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htmlUrl: "https://github.com/test/repo/issues/1",
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commentsUrl: "https://github.com/test/repo/issues/1/comments",
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eventsUrl: "https://github.com/test/repo/issues/1/events",
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number: 1,
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state: ItemState.Open,
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title: title,
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body: body,
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user: null,
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labels: new List<Label>().AsReadOnly(),
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assignee: null,
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assignees: new List<User>().AsReadOnly(),
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milestone: null,
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comments: 0,
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pullRequest: null,
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closedAt: null,
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createdAt: System.DateTimeOffset.Now,
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updatedAt: System.DateTimeOffset.Now,
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closedBy: null,
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id: 1,
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nodeId: "node1",
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locked: false,
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repository: CreateMockRepository(),
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reactions: null,
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activeLockReason: null,
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stateReason: null
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);
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}
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private Repository CreateMockRepository()
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{
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return new Repository(
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url: "https://github.com/test/repo",
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htmlUrl: "https://github.com/test/repo",
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cloneUrl: "https://github.com/test/repo.git",
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gitUrl: "git://github.com/test/repo.git",
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sshUrl: "[email protected]:test/repo.git",
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svnUrl: "https://github.com/test/repo",
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mirrorUrl: null,
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id: 1,
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nodeId: "node1",
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name: "repo",
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fullName: "test/repo",
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description: "Test repository",
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homepage: "",
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language: "C#",
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isPrivate: false,
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fork: false,
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forksCount: 0,
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stargazersCount: 0,
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watchersCount: 0,
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size: 100,
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defaultBranch: "main",
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openIssuesCount: 1,
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topics: new List<string>().AsReadOnly(),
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hasIssues: true,
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hasProjects: true,
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hasWiki: true,
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hasPages: false,
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hasDownloads: true,
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archived: false,
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disabled: false,
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pushedAt: System.DateTimeOffset.Now,
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createdAt: System.DateTimeOffset.Now,
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updatedAt: System.DateTimeOffset.Now,
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permissions: null,
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owner: CreateMockUser(),
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parent: null,
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source: null,
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templatesUrl: null,
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subscribersCount: 1,
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networkCount: 1,
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license: null,
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forksUrl: null,
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keysUrl: null,
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collaboratorsUrl: null,
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teamsUrl: null,
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hooksUrl: null,
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issueEventsUrl: null,
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eventsUrl: null,
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assigneesUrl: null,
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branchesUrl: null,
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tagsUrl: null,
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blobsUrl: null,
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gitTagsUrl: null,
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gitRefsUrl: null,
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treesUrl: null,
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statusesUrl: null,
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languagesUrl: null,
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stargazersUrl: null,
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contributorsUrl: null,
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subscribersUrl: null,
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commitsUrl: null,
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gitCommitsUrl: null,
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commentsUrl: null,
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issueCommentUrl: null,
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contentsUrl: null,
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compareUrl: null,
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mergesUrl: null,
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archiveUrl: null,
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downloadsUrl: null,
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issuesUrl: null,
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pullsUrl: null,
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milestonesUrl: null,
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notificationsUrl: null,
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labelsUrl: null,
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releasesUrl: null,
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deploymentsUrl: null,
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allowRebaseMerge: true,
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allowSquashMerge: true,
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allowMergeCommit: true,
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deleteBranchOnMerge: false,
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allowAutoMerge: false,
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allowUpdateBranch: false,
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useSquashPrTitleAsDefault: false,
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squashMergeCommitTitle: null,
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squashMergeCommitMessage: null,
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mergeCommitTitle: null,
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mergeCommitMessage: null,
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visibility: RepositoryVisibility.Public,
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webCommitSignoffRequired: false,
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securityAndAnalysis: null,
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customProperties: null
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);
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}
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private User CreateMockUser()
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{
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return new User(
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avatarUrl: "https://github.com/images/error/octocat_happy.gif",
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bio: "",
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blog: "",
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collaborators: 0,
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company: "",
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createdAt: System.DateTimeOffset.Now,
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diskUsage: 0,
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email: "[email protected]",
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followers: 0,
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following: 0,
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hireable: false,
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htmlUrl: "https://github.com/test",
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totalPrivateRepos: 0,
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id: 1,
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nodeId: "node1",
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location: "",
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login: "test",
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name: "Test User",
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ownedPrivateRepos: 0,
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plan: null,
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privateGists: 0,
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publicGists: 0,
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publicRepos: 1,
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updatedAt: System.DateTimeOffset.Now,
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url: "https://api.github.com/users/test",
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permissions: null,
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siteAdmin: false,
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ldapDistinguishedName: null,
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suspendedAt: null,
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type: AccountType.User,
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facebookId: null,
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gravatar: null,
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twitterUsername: null
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);
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}
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}
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}

‎csharp/Platform.Bot.Tests/Platform.Bot.Tests.csproj‎

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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<TargetFramework>net8</TargetFramework>
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<Nullable>enable</Nullable>
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<IsPackable>false</IsPackable>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
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<PackageReference Include="xunit" Version="2.4.2" />
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<PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
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<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
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<PrivateAssets>all</PrivateAssets>
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</PackageReference>
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<PackageReference Include="Moq" Version="4.20.69" />
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</ItemGroup>
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<ItemGroup>
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<ProjectReference Include="..\Platform.Bot\Platform.Bot.csproj" />
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<ProjectReference Include="..\Interfaces\Interfaces.csproj" />
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<ProjectReference Include="..\Storage\Storage.csproj" />
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</ItemGroup>
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</Project>

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