FindTestFile helps testing by returning first occurrence of file with given name.

NewTestFile provides easy interface to create files for automated tests Never use in production code!.

NewTestFolder is providing easy interface to create folders for automated tests Never use in production code!.

SortDesc sorts folder content by size from largest to smallest.

WalkFolder will go through a given folder and subfolders and produces file structure with aggregated file sizes.

File structure representing files and folders with their accumulated sizes.

This allows to reduce RAM usage.

ReadDir function can return list of files for given folder path.

ShouldIgnoreFolder function decides whether a folder should be ignored.