AddFile tests if a file can be added to the archive without errors and that the written size equals to the byte size.

AddFileByPath tests if a file can be added to the archive without errors and that the written size equals to the byte size.

GenerateTestFiles generates a new archive with the passed files.

GetFile tests if all generated files can get retrieved from the generated archive.

GetFiles checks if all added files are contained in the archive.

GetSharedTestFiles returns the shared test files/file content for the unit tests.