Add TraceParserGen.Tests project and fix code generation bugs #2308
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,297 @@ | ||
| using System; | ||
| using System.Diagnostics; | ||
| using System.IO; | ||
| using System.Runtime.InteropServices; | ||
| using System.Text; | ||
| using Xunit; | ||
| using Xunit.Abstractions; | ||
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| namespace TraceParserGen.Tests | ||
| { | ||
| /// <summary> | ||
| /// Tests for TraceParserGen.exe that validate it can generate parsers from manifests | ||
| /// </summary> | ||
| public class ParserGenerationTests : TestBase | ||
| { | ||
| public ParserGenerationTests(ITestOutputHelper output) : base(output) | ||
| { | ||
| } | ||
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| [Fact] | ||
| public void CanGenerateParserFromManifest() | ||
| { | ||
| // Skip on non-Windows platforms since TraceParserGen.exe is a .NET Framework app | ||
| // In a real environment, this would run on Windows with proper .NET Framework support | ||
| if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) | ||
| { | ||
| Output.WriteLine("Skipping test on non-Windows platform. TraceParserGen.exe requires .NET Framework."); | ||
| return; | ||
| } | ||
|
|
||
| // Arrange | ||
| string manifestPath = Path.Combine(TestDataDir, "SimpleTest.manifest.xml"); | ||
| string outputCsPath = Path.Combine(OutputDir, "SimpleTestParser.cs"); | ||
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| Output.WriteLine($"Manifest: {manifestPath}"); | ||
| Output.WriteLine($"Output: {outputCsPath}"); | ||
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| Assert.True(File.Exists(manifestPath), $"Manifest file not found: {manifestPath}"); | ||
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| // Act - Step 1: Run TraceParserGen.exe | ||
| string traceParserGenPath = GetTraceParserGenExePath(); | ||
| Output.WriteLine($"TraceParserGen.exe: {traceParserGenPath}"); | ||
|
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| var exitCode = RunTraceParserGen(traceParserGenPath, manifestPath, outputCsPath); | ||
|
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| // Assert - Step 1: Verify TraceParserGen succeeded | ||
| Assert.Equal(0, exitCode); | ||
| Assert.True(File.Exists(outputCsPath), $"Generated C# file not found: {outputCsPath}"); | ||
|
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| // Verify the generated file has expected content | ||
| string generatedContent = File.ReadAllText(outputCsPath); | ||
| Assert.Contains("class", generatedContent); | ||
| Assert.Contains("TraceEventParser", generatedContent); | ||
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| Output.WriteLine("Successfully generated parser from manifest"); | ||
|
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| // Act - Step 2: Create and build a test console application | ||
| string testProjectDir = Path.Combine(OutputDir, "TestApp"); | ||
| Directory.CreateDirectory(testProjectDir); | ||
|
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| CreateTestConsoleApp(testProjectDir, outputCsPath); | ||
|
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| // Act - Step 3: Build the test application | ||
| var buildExitCode = BuildTestApp(testProjectDir); | ||
| Assert.Equal(0, buildExitCode); | ||
|
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| // Act - Step 4: Run the test application | ||
| var runExitCode = RunTestApp(testProjectDir); | ||
|
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| // Assert - Step 4: Verify test app ran successfully (no crashes, no asserts) | ||
| Assert.Equal(0, runExitCode); | ||
|
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| Output.WriteLine("Test completed successfully"); | ||
| } | ||
|
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| private int RunTraceParserGen(string exePath, string manifestPath, string outputPath) | ||
| { | ||
| var startInfo = new ProcessStartInfo | ||
| { | ||
| FileName = exePath, | ||
| Arguments = $"\"{manifestPath}\" \"{outputPath}\"", | ||
| UseShellExecute = false, | ||
| RedirectStandardOutput = true, | ||
| RedirectStandardError = true, | ||
| CreateNoWindow = true | ||
| }; | ||
|
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| Output.WriteLine($"Running: {startInfo.FileName} {startInfo.Arguments}"); | ||
|
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| using (var process = Process.Start(startInfo)) | ||
| { | ||
| var output = process.StandardOutput.ReadToEnd(); | ||
| var error = process.StandardError.ReadToEnd(); | ||
|
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| process.WaitForExit(); | ||
|
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| if (!string.IsNullOrWhiteSpace(output)) | ||
| { | ||
| Output.WriteLine("STDOUT:"); | ||
| Output.WriteLine(output); | ||
| } | ||
|
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| if (!string.IsNullOrWhiteSpace(error)) | ||
| { | ||
| Output.WriteLine("STDERR:"); | ||
| Output.WriteLine(error); | ||
| } | ||
|
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| return process.ExitCode; | ||
| } | ||
| } | ||
|
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| private void CreateTestConsoleApp(string projectDir, string generatedParserPath) | ||
| { | ||
| // Get the path to TraceEvent assembly - it's in the test project's output directory | ||
| // since we have a ProjectReference | ||
| string traceEventAssembly = Path.Combine(Environment.CurrentDirectory, "Microsoft.Diagnostics.Tracing.TraceEvent.dll"); | ||
|
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| // Create the .csproj file | ||
| string csprojContent = $@"<Project Sdk=""Microsoft.NET.Sdk""> | ||
| <PropertyGroup> | ||
| <OutputType>Exe</OutputType> | ||
| <TargetFramework>net462</TargetFramework> | ||
| <AllowUnsafeBlocks>true</AllowUnsafeBlocks> | ||
| </PropertyGroup> | ||
| <ItemGroup> | ||
| <Reference Include=""Microsoft.Diagnostics.Tracing.TraceEvent""> | ||
|
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||
| <HintPath>{traceEventAssembly}</HintPath> | ||
| </Reference> | ||
| </ItemGroup> | ||
| </Project>"; | ||
|
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| File.WriteAllText(Path.Combine(projectDir, "TestApp.csproj"), csprojContent); | ||
|
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| // Copy the generated parser file | ||
| string destParserPath = Path.Combine(projectDir, Path.GetFileName(generatedParserPath)); | ||
| File.Copy(generatedParserPath, destParserPath, true); | ||
|
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| // Create a simple trace file to use for testing | ||
| // We'll use one of the existing test trace files | ||
| string sampleTracePath = Path.Combine(TestDataDir, "..", "..", "TraceEvent", "TraceEvent.Tests", "inputs", "net.4.5.x86.etl.zip"); | ||
|
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| // Create Program.cs that uses the generated parser with a real trace file | ||
| string programContent = $@"using System; | ||
| using System.Linq; | ||
| using System.Reflection; | ||
| using Microsoft.Diagnostics.Tracing; | ||
|
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| class Program | ||
| {{ | ||
| static int Main(string[] args) | ||
| {{ | ||
| try | ||
| {{ | ||
| Console.WriteLine(""Starting parser test...""); | ||
|
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| // Find all TraceEventParser-derived types in the current assembly | ||
| var assembly = Assembly.GetExecutingAssembly(); | ||
| var parserTypes = assembly.GetTypes() | ||
| .Where(t => typeof(TraceEventParser).IsAssignableFrom(t) && !t.IsAbstract) | ||
| .ToList(); | ||
|
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| Console.WriteLine($""Found {{parserTypes.Count}} parser type(s)""); | ||
|
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| if (parserTypes.Count == 0) | ||
| {{ | ||
| Console.WriteLine(""ERROR: No parser types found""); | ||
| return 1; | ||
| }} | ||
|
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| // Get trace file path (from args or use default) | ||
| string traceFilePath = args.Length > 0 ? args[0] : ""{sampleTracePath.Replace("\\", "\\\\")}""; | ||
|
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| if (!System.IO.File.Exists(traceFilePath)) | ||
| {{ | ||
| Console.WriteLine($""ERROR: Trace file not found: {{traceFilePath}}""); | ||
| return 1; | ||
| }} | ||
|
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| Console.WriteLine($""Using trace file: {{traceFilePath}}""); | ||
|
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| using (var source = TraceEventDispatcher.GetDispatcherFromFileName(traceFilePath)) | ||
| {{ | ||
| foreach (var parserType in parserTypes) | ||
| {{ | ||
| Console.WriteLine($"" Testing parser: {{parserType.Name}}""); | ||
|
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| // Create an instance of the parser | ||
| var parser = (TraceEventParser)Activator.CreateInstance(parserType, source); | ||
|
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| int eventCount = 0; | ||
|
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| // Hook the All event to count events processed by this parser | ||
| parser.All += (TraceEvent data) => | ||
| {{ | ||
| eventCount++; | ||
| }}; | ||
|
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| // Process the trace (this will trigger events if any match) | ||
| source.Process(); | ||
|
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| Console.WriteLine($"" Processed {{eventCount}} event(s) from this parser""); | ||
| }} | ||
| }} | ||
|
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| Console.WriteLine(""Parser test completed successfully""); | ||
| return 0; | ||
| }} | ||
| catch (Exception ex) | ||
| {{ | ||
| Console.WriteLine($""ERROR: {{ex.Message}}""); | ||
| Console.WriteLine(ex.StackTrace); | ||
| return 1; | ||
| }} | ||
| }} | ||
| }}"; | ||
|
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| File.WriteAllText(Path.Combine(projectDir, "Program.cs"), programContent); | ||
| } | ||
|
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| private int BuildTestApp(string projectDir) | ||
| { | ||
| var startInfo = new ProcessStartInfo | ||
| { | ||
| FileName = "dotnet", | ||
| Arguments = "build -c Release", | ||
| WorkingDirectory = projectDir, | ||
| UseShellExecute = false, | ||
| RedirectStandardOutput = true, | ||
| RedirectStandardError = true, | ||
| CreateNoWindow = true | ||
| }; | ||
|
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| Output.WriteLine($"Building test app in: {projectDir}"); | ||
|
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| using (var process = Process.Start(startInfo)) | ||
| { | ||
| var output = process.StandardOutput.ReadToEnd(); | ||
| var error = process.StandardError.ReadToEnd(); | ||
|
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| process.WaitForExit(); | ||
|
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| if (!string.IsNullOrWhiteSpace(output)) | ||
| { | ||
| Output.WriteLine("Build STDOUT:"); | ||
| Output.WriteLine(output); | ||
| } | ||
|
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| if (!string.IsNullOrWhiteSpace(error)) | ||
| { | ||
| Output.WriteLine("Build STDERR:"); | ||
| Output.WriteLine(error); | ||
| } | ||
|
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| return process.ExitCode; | ||
| } | ||
| } | ||
|
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| private int RunTestApp(string projectDir) | ||
| { | ||
| var startInfo = new ProcessStartInfo | ||
| { | ||
| FileName = "dotnet", | ||
| Arguments = "run -c Release", | ||
| WorkingDirectory = projectDir, | ||
| UseShellExecute = false, | ||
| RedirectStandardOutput = true, | ||
| RedirectStandardError = true, | ||
| CreateNoWindow = true | ||
| }; | ||
|
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| Output.WriteLine($"Running test app in: {projectDir}"); | ||
|
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| using (var process = Process.Start(startInfo)) | ||
| { | ||
| var output = process.StandardOutput.ReadToEnd(); | ||
| var error = process.StandardError.ReadToEnd(); | ||
|
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| process.WaitForExit(); | ||
|
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| if (!string.IsNullOrWhiteSpace(output)) | ||
| { | ||
| Output.WriteLine("Run STDOUT:"); | ||
| Output.WriteLine(output); | ||
| } | ||
|
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| if (!string.IsNullOrWhiteSpace(error)) | ||
| { | ||
| Output.WriteLine("Run STDERR:"); | ||
| Output.WriteLine(error); | ||
| } | ||
|
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| return process.ExitCode; | ||
| } | ||
| } | ||
| } | ||
| } | ||
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Is this used anywhere?
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Yes,
CreateTestConsoleAppgets called inGenerator_CompilesAndInstantiatesto make sure that the type can be compiled and loaded.