tests/Test-ManagedApprovedPublicGroups.ps1

function Test-ManagedApprovedPublicGroups {
    [CmdletBinding()]
    [OutputType([CISAuditResult])]
    param (
        # Aligned
        # Parameters can be added if needed
    )

    begin {
        # Dot source the class script if necessary
        #. .\source\Classes\CISAuditResult.ps1
        # Initialization code, if needed
        $recnum = "1.2.1"
    }

    process {
        try {
            # 1.2.1 (L2) Ensure that only organizationally managed/approved public groups exist (Automated)

            # Retrieve all public groups
            $allGroups = Get-MgGroup -All | Where-Object { $_.Visibility -eq "Public" } | Select-Object DisplayName, Visibility

            # Prepare failure reasons and details based on compliance
            $failureReasons = if ($null -ne $allGroups -and $allGroups.Count -gt 0) {
                "There are public groups present that are not organizationally managed/approved."
            }
            else {
                "N/A"
            }

            $details = if ($null -eq $allGroups -or $allGroups.Count -eq 0) {
                "No public groups found."
            }
            else {
                $groupDetails = $allGroups | ForEach-Object { $_.DisplayName + " (" + $_.Visibility + ")" }
                "Public groups found: $($groupDetails -join ', ')"
            }

            # Create and populate the CISAuditResult object
            $params = @{
                Rec           = $recnum
                Result        = $null -eq $allGroups -or $allGroups.Count -eq 0
                Status        = if ($null -eq $allGroups -or $allGroups.Count -eq 0) { "Pass" } else { "Fail" }
                Details       = $details
                FailureReason = $failureReasons
            }
            $auditResult = Initialize-CISAuditResult @params
        }
        catch {
            Write-Error "An error occurred during the test: $_"

            # Retrieve the description from the test definitions
            $testDefinition = $script:TestDefinitionsObject | Where-Object { $_.Rec -eq $recnum }
            $description = if ($testDefinition) { $testDefinition.RecDescription } else { "Description not found" }

            $script:FailedTests.Add([PSCustomObject]@{ Rec = $recnum; Description = $description; Error = $_ })

            # Call Initialize-CISAuditResult with error parameters
            $auditResult = Initialize-CISAuditResult -Rec $recnum -Failure
        }
    }

    end {
        # Return auditResults
        return $auditResult
    }
}