Allow trailing back-slashes in paths and use proper join-path/io class to handle paths #2265
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Issue:
For $XMLDirectoryPath, you check if the path does not end in a back-slash. For $OutputFilePath, you do the same as well as test the path. The description mentions the trailing "requirement" of one, but not the other - inconsistent. Test-Path for both suffices.
Reason:
Accepting trailing slashes is convenient, as tab-completion adds trailing back-slash automatically. Also removes inconsistency.
Fix:
Use Test-Path for both in parameter validation. Used Join-Path etc to properly construct paths, and [System.IO.Path]::changeExtension instead of string operations.
Validation:
Tested against local and remote servers, using local and UNC paths