private/Test-Command.ps1
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function Test-Command { param([string]$Command) if ([string]::IsNullOrWhiteSpace($Command)) { Write-PSFMessage -Level Verbose -Message "Command parameter is null or empty" return $false } Write-PSFMessage -Level Verbose -Message "Testing if command exists: $Command" $cmd = Get-Command $Command -ErrorAction SilentlyContinue if ($null -eq $cmd) { Write-PSFMessage -Level Verbose -Message "Command '$Command' not found" return $false } # For script/batch files, verify they can actually execute # by checking their dependencies (like node for npm-installed tools) if ($cmd.CommandType -in 'Application', 'ExternalScript') { # Try to get version or help to verify it works # Use timeout to prevent hanging try { $result = & $Command --version 2>&1 | Select-Object -First 1 Write-PSFMessage -Level Verbose -Message "Command '$Command' version check: $($result.Substring(0, [Math]::Min(100, $result.Length)))" # Check for common error patterns if ($result -match 'not found|command not found|cannot find|no such file') { Write-PSFMessage -Level Verbose -Message "Command '$Command' exists but has missing dependencies" return $false } Write-PSFMessage -Level Verbose -Message "Command '$Command' exists and is functional" return $true } catch { Write-PSFMessage -Level Verbose -Message "Command '$Command' exists but failed to execute: $_" return $false } } Write-PSFMessage -Level Verbose -Message "Command '$Command' exists: $true" return $true } |