private RemoteTestExecution StartTraceeProcess(string loggerCategory, string transportName = null)
{
_outputHelper.WriteLine("Starting tracee.");
string exePath = CommonHelper.GetTraceePathWithArgs("EventPipeTracee", targetFramework: "net5.0");
return(RemoteTestExecution.StartProcess(exePath + " " + loggerCategory, _outputHelper, transportName));
}
public static RemoteTestExecution StartRemoteProcess(Func <string, int> testEntry, string loggerCategory, ITestOutputHelper outputHelper)
{
var options = new RemoteInvokeOptions()
{
Start = true,
ExpectedExitCode = 0,
CheckExitCode = true,
StartInfo = new ProcessStartInfo {
RedirectStandardError = true, RedirectStandardOutput = true, RedirectStandardInput = true
},
};
var testExecution = new RemoteTestExecution();
//Note lambdas may not work here since closures cannot be properly serialized across process boundaries.
testExecution.RemoteProcess = RemoteExecutor.Invoke(testEntry, loggerCategory, options);
try
{
Task <string> stdOutputTask = testExecution.RemoteProcess.Process.StandardOutput.ReadToEndAsync();
Task <string> stdErrorTask = testExecution.RemoteProcess.Process.StandardError.ReadToEndAsync();
Task.Run(async() =>
{
try
{
string result = await stdOutputTask;
outputHelper.WriteLine("Stdout:");
if (result != null)
{
outputHelper.WriteLine(result);
}
result = await stdErrorTask;
outputHelper.WriteLine("Stderr:");
if (result != null)
{
outputHelper.WriteLine(result);
}
}
catch (Exception e)
{
outputHelper.WriteLine(e.ToString());
throw;
}
});
}
catch (ObjectDisposedException)
{
outputHelper.WriteLine("Failed to collect remote process's output");
}
return(testExecution);
}
public async Task TestDiagnosticsEventPipeProcessorLogs()
{
var outputStream = new MemoryStream();
await using (var testExecution = RemoteTestExecution.StartRemoteProcess("LoggerRemoteTest", _output))
{
//TestRunner should account for start delay to make sure that the diagnostic pipe is available.
var loggerFactory = new LoggerFactory(new[] { new StreamingLoggerProvider(outputStream, LogFormat.Json) });
DiagnosticsEventPipeProcessor diagnosticsEventPipeProcessor = new DiagnosticsEventPipeProcessor(
PipeMode.Logs,
loggerFactory,
Enumerable.Empty <IMetricsLogger>());
var processingTask = diagnosticsEventPipeProcessor.Process(testExecution.TestRunner.Pid, TimeSpan.FromSeconds(10), CancellationToken.None);
//Add a small delay to make sure diagnostic processor had a chance to initialize
await Task.Delay(1000);
//Send signal to proceed with event collection
testExecution.Start();
await processingTask;
await diagnosticsEventPipeProcessor.DisposeAsync();
loggerFactory.Dispose();
}
outputStream.Position = 0L;
Assert.True(outputStream.Length > 0, "No data written by logging process.");
using var reader = new StreamReader(outputStream);
string firstMessage = reader.ReadLine();
Assert.NotNull(firstMessage);
LoggerTestResult result = JsonSerializer.Deserialize <LoggerTestResult>(firstMessage);
Assert.Equal("Some warning message with 6", result.Message);
Assert.Equal("LoggerRemoteTest", result.Category);
Assert.Equal("Warning", result.LogLevel);
Assert.Equal("0", result.EventId);
Validate(result.Scopes, ("BoolValue", "true"), ("StringValue", "test"), ("IntValue", "5"));
Validate(result.Arguments, ("arg", "6"));
string secondMessage = reader.ReadLine();
Assert.NotNull(secondMessage);
result = JsonSerializer.Deserialize <LoggerTestResult>(secondMessage);
Assert.Equal("Another message", result.Message);
Assert.Equal("LoggerRemoteTest", result.Category);
Assert.Equal("Warning", result.LogLevel);
Assert.Equal("0", result.EventId);
Assert.Equal(0, result.Scopes.Count);
//We are expecting only the original format
Assert.Equal(1, result.Arguments.Count);
}
