Utilities/Test-ExpressionCacheProviderSpec.ps1
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function Test-ExpressionCacheProviderSpec { param( [Parameter(Mandatory)] [object]$Spec ) # Accept hashtable or PSCustomObject; normalize to PSCustomObject if ($Spec -is [hashtable]) { $Spec = [pscustomobject]$Spec } $required = 'Name', 'GetOrCreate', 'Config' foreach ($r in $required) { if (-not ($Spec.PSObject.Properties.Name -contains $r) -or -not $Spec.$r) { throw "ExpressionCache: Provider spec missing required property '$r'." } } # Ensure command names resolve foreach ($cmdProp in 'GetOrCreate', 'Initialize') { $cmd = $Spec.$cmdProp if ($cmd) { if (-not (Get-Command $cmd -ErrorAction SilentlyContinue)) { throw "ExpressionCache: Provider spec '$($Spec.Name)': command '$cmd' (from '$cmdProp') not found." } } } # Ensure Config is an object (PSCO/hashtable ok). Coerce hashtable to PSCO for dot access. if ($Spec.Config -is [hashtable] -or $Spec.Config -is [System.Collections.IDictionary]) { Write-Verbose "ExpressionCache: Normalizing provider Config (hashtable -> PSCustomObject)." $Spec.Config = ConvertTo-PSCustomObjectDeep $Spec.Config } elseif ($Spec.Config -isnot [pscustomobject]) { throw "ExpressionCache: Provider '$($Spec.Name)': Config must be a hashtable or PSCustomObject." } # Optional InitializeArgs must be splattable (hashtable/IDictionary) if ($Spec.PSObject.Properties.Name -contains 'InitializeArgs' -and $Spec.InitializeArgs) { if ($Spec.InitializeArgs -isnot [System.Collections.IDictionary]) { throw "ExpressionCache: Provider spec '$($Spec.Name)': InitializeArgs must be a hashtable/IDictionary." } } return $Spec } |