File Diff
This module provides an atomic file diffing function for use in unit tests.
The diff_files() function takes two file handles and determines returns true if they point to identical files.
use ;
use ;
let mut file1 = match open ;
let mut file2 = match open ;
diff_files;
The diff() function takes string representations of the files and returns true if the strings represent real files and those files are identical.
use ;
diff; // true