mcs/class/Mono.Profiler.Log/Test/ProfilerTestRun.cs

   1 // Licensed to the .NET Foundation under one or more agreements.
   2 // The .NET Foundation licenses this file to you under the MIT license.
   3 // See the LICENSE file in the project root for more information.
   4
   5 using System;
   6 using System.Collections.Generic;
   7 using System.Diagnostics;
   8 using System.IO;
   9 using Mono.Profiler.Log;
  10
  11 namespace MonoTests.Mono.Profiler.Log {
  12
  13         sealed class ProfilerTestRun {
  14
  15                 sealed class ProfilerTestVisitor : LogEventVisitor {
  16
  17                         public ProfilerTestRun Run { get; }
  18
  19                         public List<LogEvent> Events { get; } = new List<LogEvent> ();
  20
  21                         public ProfilerTestVisitor (ProfilerTestRun run)
  22                         {
  23                                 Run = run;
  24                         }
  25
  26                         public override void VisitBefore (LogEvent ev)
  27                         {
  28                                 Events.Add (ev);
  29                         }
  30                 }
  31
  32                 public string Name { get; }
  33
  34                 public string Options { get; }
  35
  36                 readonly string _output;
  37
  38                 static volatile int _id;
  39
  40                 static string _testAssemblyPath;
  41                 static Process _currentProcess;
  42
  43                 public ProfilerTestRun (string name, string options)
  44                 {
  45                         _testAssemblyPath = Path.Combine (Path.GetDirectoryName (System.Reflection.Assembly.GetExecutingAssembly ().Location), "log-profiler-test.exe");
  46                         _currentProcess = Process.GetCurrentProcess();
  47                         Name = name;
  48                         Options = options;
  49                         _output = $"test-{_id++}.mlpd";
  50                 }
  51
  52                 public void Run (Action<IReadOnlyList<LogEvent>> action)
  53                 {
  54                         RunTest ();
  55                         var events = ParseFile ();
  56
  57                         action (events);
  58                 }
  59
  60                 void RunTest ()
  61                 {
  62                         using (var proc = new Process ()) {
  63                                 proc.StartInfo = new ProcessStartInfo {
  64                                         UseShellExecute = false,
  65                                         FileName = _currentProcess.MainModule.FileName,
  66                                         Arguments = $"--debug --profile=log:nodefaults,output=\"{_output}\",{Options} {_testAssemblyPath} {Name}",
  67                                 };
  68
  69                                 proc.Start ();
  70                                 proc.WaitForExit ();
  71
  72                                 if (proc.ExitCode != 0)
  73                                         throw new Exception ($"Profiler test process exited with code: {proc.ExitCode}");
  74                         }
  75                 }
  76
  77                 IReadOnlyList<LogEvent> ParseFile ()
  78                 {
  79                         var visitor = new ProfilerTestVisitor (this);
  80
  81                         using (var stream = new LogStream (File.OpenRead (_output)))
  82                                 new LogProcessor (stream, null, visitor).Process ();
  83
  84                         return visitor.Events;
  85                 }
  86         }
  87 }