get-childitem either subfolder or a "rbac.jsonc" file

I want to check if all folders contains either a subfolder or an rbac.jsonc file.

I want to iterate through a list of folder $topMgFolderPath being the root folder.
I want to go all the way down the tree in the folders
I am are looking to trigger a Pester test failure if there is anything that do not correspond to my condition.
I expect folders to have either a rbac.json file, in which case all the subfolders in that folder will be ignored from any further processing or at least 1 subfolder that will itself contains either a rbac.jsonc file or more subfolders that will lead down the line to such a file.
In all cases, .policy folder is to be ignored

is this somehow possible ?

Solution

Your question lack some clarity for me as it stand.

Based on your post, what I understand is:

You want to iterate through a list of folder $topMgFolderPath being the root folder.
You used -Recurse in your code sample so I assumed you want to go all the way down the tree
Based on your second code line ending of | should -BeNullOrEmpty, you are looking to trigger a Pester test failure if there is anything that do not correspond to your condition.
You expect folders to have either a rbac.json file, in which case all the subfolders in that folder will be ignored from any further processing or at least 1 subfolder that will itself contains either a rbac.json file or more subfolders that will lead down the line to such a file.
In all cases, .policy folder is to be ignored

Please update your question with additional details or clarify the situation if I didn't get the premise right.

In any case, what you seek to do is possible but not through a single Get-ChildItem statement.

The way I'd go about it, since you want a recurse operation with multiple checks that stop processing a folder once it has been validated, is an home-made -recurse done through a single-layer Get-ChildItem alongside a queue where the recursion is done "manually", one layer at a time within a while loop that persist until the queue is cleared out.

$topMgFolderPath = 'C:\temp\'

$queue = [System.Collections.Queue]::new()
$InvalidFolders = [System.Collections.Generic.List[PSobject]]::new()
$Directories = Get-ChildItem -path $topMgFolderPath  -Exclude '.policy' -Directory
$Directories | % { $queue.Enqueue($_.FullName) }


while ($Queue.Count -gt 0) {
    $dir = $queue.Dequeue()
    $HasRbacFile = Test-Path -Path "$dir\rbac.json"
    # If Rbac file exist, we stop processing this item
    if ($HasRbacFile) { Continue }

    $SubDirectories = Get-ChildItem -Path $dir -Directory -Exclude '.policy'
    # If the rbac file was not found and no subfolders exist, then it is invalid
    if ($SubDirectories.count -eq 0) {
        $InvalidFolders.Add($dir)
    } else {
        # Subdirectories found are enqueued so we can check them 
        $SubDirectories | % {$queue.Enqueue($_.FullName)}
    }

}
# Based on your second line of code where you performed that validation.
$InvalidFolders | should -BeNullOrEmpty

Everything important happens in the while loop where the main logic

Is there a rbac file ?
If not, is there any subfolders (not .policy) to check ?

References

Queue Class