microsoft/TypeAgent
Publicmirrored fromhttps://github.com/microsoft/TypeAgentAvailable
dotnet/autoShell.Tests/AutoShellProcess.cs
150lines · modecode
| 1 | // Copyright (c) Microsoft Corporation. |
| 2 | // Licensed under the MIT License. |
| 3 | |
| 4 | using System.Diagnostics; |
| 5 | |
| 6 | namespace autoShell.Tests; |
| 7 | |
| 8 | /// <summary> |
| 9 | /// Manages an autoShell.exe child process with redirected stdin/stdout |
| 10 | /// for end-to-end testing of the JSON command protocol. |
| 11 | /// </summary> |
| 12 | internal sealed class AutoShellProcess : IDisposable |
| 13 | { |
| 14 | private static readonly string s_exePath = Path.Combine(AppContext.BaseDirectory, "autoShell.exe"); |
| 15 | |
| 16 | private readonly Process _process; |
| 17 | |
| 18 | private AutoShellProcess(Process process) |
| 19 | { |
| 20 | _process = process; |
| 21 | } |
| 22 | |
| 23 | /// <summary> |
| 24 | /// Starts autoShell.exe in interactive (stdin) mode with redirected I/O. |
| 25 | /// </summary> |
| 26 | public static AutoShellProcess StartInteractive() |
| 27 | { |
| 28 | var psi = new ProcessStartInfo |
| 29 | { |
| 30 | FileName = s_exePath, |
| 31 | RedirectStandardInput = true, |
| 32 | RedirectStandardOutput = true, |
| 33 | RedirectStandardError = true, |
| 34 | UseShellExecute = false, |
| 35 | CreateNoWindow = true, |
| 36 | }; |
| 37 | |
| 38 | var process = Process.Start(psi) |
| 39 | ?? throw new InvalidOperationException("Failed to start autoShell.exe"); |
| 40 | |
| 41 | return new AutoShellProcess(process); |
| 42 | } |
| 43 | |
| 44 | /// <summary> |
| 45 | /// Starts autoShell.exe with command-line arguments (non-interactive mode). |
| 46 | /// Returns stdout content and exit code after the process completes. |
| 47 | /// </summary> |
| 48 | public static (string Output, int ExitCode) RunWithArgs(string args, int timeoutMs = 10000) |
| 49 | { |
| 50 | var psi = new ProcessStartInfo |
| 51 | { |
| 52 | FileName = s_exePath, |
| 53 | Arguments = args, |
| 54 | RedirectStandardOutput = true, |
| 55 | RedirectStandardError = true, |
| 56 | UseShellExecute = false, |
| 57 | CreateNoWindow = true, |
| 58 | }; |
| 59 | |
| 60 | using var process = Process.Start(psi)!; |
| 61 | string output = process.StandardOutput.ReadToEnd(); |
| 62 | bool exited = process.WaitForExit(timeoutMs); |
| 63 | |
| 64 | if (!exited) |
| 65 | { |
| 66 | process.Kill(); |
| 67 | throw new TimeoutException($"autoShell.exe did not exit within {timeoutMs}ms"); |
| 68 | } |
| 69 | |
| 70 | return (output, process.ExitCode); |
| 71 | } |
| 72 | |
| 73 | /// <summary> |
| 74 | /// Sends a JSON command string to stdin, terminated with \r\n. |
| 75 | /// </summary> |
| 76 | public void SendCommand(string json) |
| 77 | { |
| 78 | _process.StandardInput.WriteLine(json); |
| 79 | _process.StandardInput.Flush(); |
| 80 | } |
| 81 | |
| 82 | /// <summary> |
| 83 | /// Reads a single line of stdout with a timeout. |
| 84 | /// Returns null if the timeout expires before a line is available. |
| 85 | /// Uses a lock to prevent concurrent reads on the same stream. |
| 86 | /// </summary> |
| 87 | private readonly SemaphoreSlim _readLock = new(1, 1); |
| 88 | |
| 89 | public async Task<string?> ReadLineAsync(int timeoutMs = 5000) |
| 90 | { |
| 91 | await _readLock.WaitAsync(); |
| 92 | try |
| 93 | { |
| 94 | using var cts = new CancellationTokenSource(timeoutMs); |
| 95 | return await _process.StandardOutput.ReadLineAsync(cts.Token).AsTask(); |
| 96 | } |
| 97 | catch (OperationCanceledException) |
| 98 | { |
| 99 | return null; |
| 100 | } |
| 101 | finally |
| 102 | { |
| 103 | _readLock.Release(); |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | /// <summary> |
| 108 | /// Sends a quit command and waits for the process to exit. |
| 109 | /// </summary> |
| 110 | public void SendQuit(int timeoutMs = 5000) |
| 111 | { |
| 112 | SendCommand("""{"actionName":"quit","parameters":{}}"""); |
| 113 | _process.WaitForExit(timeoutMs); |
| 114 | } |
| 115 | |
| 116 | /// <summary> |
| 117 | /// Returns true if the process has exited. |
| 118 | /// </summary> |
| 119 | public bool HasExited => _process.HasExited; |
| 120 | |
| 121 | /// <summary> |
| 122 | /// Closes the stdin stream (sends EOF). |
| 123 | /// </summary> |
| 124 | public void CloseStdin() |
| 125 | { |
| 126 | _process.StandardInput.Close(); |
| 127 | } |
| 128 | |
| 129 | /// <summary> |
| 130 | /// Waits for the process to exit within the given timeout. |
| 131 | /// </summary> |
| 132 | public bool WaitForExit(int timeoutMs) |
| 133 | { |
| 134 | return _process.WaitForExit(timeoutMs); |
| 135 | } |
| 136 | |
| 137 | public void Dispose() |
| 138 | { |
| 139 | try |
| 140 | { |
| 141 | if (!_process.HasExited) |
| 142 | { |
| 143 | _process.Kill(); |
| 144 | _process.WaitForExit(3000); |
| 145 | } |
| 146 | } |
| 147 | catch { } |
| 148 | _process.Dispose(); |
| 149 | } |
| 150 | } |
| 151 | |