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WoofWare.NUnitTestRunner/Consumer/RunSubProcess.fs

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namespace Consumer
open System
open System.Diagnostics
open System.IO
open System.IO.Compression
open System.Text
open NUnit.Framework
open FsUnitTyped
[<TestFixture>]
module RunSubProcess =
[<Test>]
let ``Run a subprocess`` () =
let exe = "/bin/bash"
let args = [ "-c" ; "echo hi >&2 && echo bye" ]
let workingDir = None
let psi =
ProcessStartInfo (
exe,
UseShellExecute = false,
RedirectStandardError = true,
RedirectStandardOutput = true,
WorkingDirectory = Option.toObj workingDir
)
for arg in args do
psi.ArgumentList.Add arg
psi.EnvironmentVariables.Add ("THING", Path.Combine (AppDomain.CurrentDomain.BaseDirectory, "hi"))
let stderr = StringBuilder ()
use proc = new Process (StartInfo = psi)
proc.OutputDataReceived.Add (fun e -> printfn $"%s{e.Data}")
proc.ErrorDataReceived.Add (fun e ->
eprintfn $"%s{e.Data}"
stderr.AppendLine e.Data |> ignore
)
proc.Start () |> shouldEqual true
proc.BeginOutputReadLine ()
proc.BeginErrorReadLine ()
proc.WaitForExit ()