How can test real access right for other User-Account in powershell

Question

I need to try if a specific user has read or write acces on DFS Folder (to validate my DFS).

I am Admin on the domain and I have the credential of this user in $Credentials but Test-Path, Get-Item, New-Item do not accept the credential

Answer 1

instead check acl recursively, i use real write access with Start-Process and specific credential (start-process is an alias of runas). the process write a new file with $(whoami) content after ending process check if file exist and his content.

function test-Write ($folder)
    $WinCredential = Get-Credential -UserName "Domain\User" -Message "Login"
    Start-Process -WindowStyle Hidden -Wait -Credential $WinCredential -FilePath "powershell.exe" -ArgumentList "whoami | out-file '$folder\test.txt'"
    if ((get-content "$folder\test.txt") -like "Domain\User") {
       return 'OK'
    }
    return 'Erreur NTFS Access'
}