Function to convert an object into HashTable PowerShell code, with name values optionally anonymized. This was written to quickly create the contents of Pester Mocks, by taking real output and converting it to Hashtables or PsCustomObject output for declaring within the Mock in Pester. The function can anonymize the name strings in the objects a…

Format-HashTable.ps1

function Format-HashTable {
    [CmdletBinding()]
    param(
        [parameter(, ValueFromPipeline)]
        $InputObject,

        [switch]
        $AnonymizeNames,

        [switch]
        $AsPSCustomObject
    )

    Begin {
        filter isNumeric($x) {
            return $x -is [byte]  -or $x -is [int16]  -or $x -is [int32]  -or $x -is [int64]  `
               -or $x -is [sbyte] -or $x -is [uint16] -or $x -is [uint32] -or $x -is [uint64] `
               -or $x -is [float] -or $x -is [double] -or $x -is [decimal]
        }

        $i = 1
    }
    process {

        if ($AsPSCustomObject) { 
            "[pscustomobject]@{"
        }
        else {
            "@{"
        }
        
        $Properties = ($InputObject | Get-Member -MemberType Property).Name

        $NameProperties = $Properties | Where-Object { $_ -match 'Name' }

        foreach ($Property in $Properties) {
            
            $Value = $InputObject.$Property

            $PropertyValue = switch ($Value) {
                { $_ -eq $null } { '$null' }
                { $_ -is [string] } { "'" + $Value + "'" }
                { $_ | IsNumeric } { $Value }
            }

            if ($AnonymizeNames) {
                foreach ($NameProperty in $NameProperties) {
                    $PropertyValue = $PropertyValue -replace $InputObject.$NameProperty,('somerandomname' + $i)
                }
            }

            if ($PropertyValue) {
                "    " + $Property + " = " + $PropertyValue
            }
        }

        $i++

        "}"
    }
}