Public/Get-InternalsVisibleToAttribute.ps1
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function Get-InternalsVisibleToAttribute { <# .SYNOPSIS Retrieves InternalsVisibleTo attributes from a .NET assembly. .DESCRIPTION Loads the specified .NET assembly and inspects its System.Runtime.CompilerServices.InternalsVisibleToAttribute custom attributes, returning those whose friend assembly name matches the supplied pattern. .PARAMETER Path The file system path to the .NET assembly (.dll or .exe) to inspect. .PARAMETER FriendAssemblyNamePattern A wildcard pattern used to filter the InternalsVisibleTo friend assembly names (matched with the -like operator). .EXAMPLE Get-InternalsVisibleToAttribute.ps1 -Path .\MyLibrary.dll -FriendAssemblyNamePattern '*Tests*' Returns the InternalsVisibleTo attributes of MyLibrary.dll whose friend assembly name contains "Tests". #> [CmdletBinding()] param( [Parameter(Mandatory = $true)][string]$Path, [Parameter(Mandatory = $true)][string]$FriendAssemblyNamePattern ) try { $assembly = [System.Reflection.Assembly]::LoadFrom((Resolve-Path $Path)) $attributes = $assembly.GetCustomAttributes([System.Runtime.CompilerServices.InternalsVisibleToAttribute], $false) if ($attributes) { $attributes | Where-Object { $_.AssemblyName -like $FriendAssemblyNamePattern } } } catch { Write-Error "Failed to load or inspect the assembly '$Path'. Error: $($_.Exception.Message)" } } |