These cover some of the possible errors with delta fragments. Many of
the same tests could be implemented slightly easier by testing the
helper functions, but the infrastructure is already set up to test the
full function.
This is made easier by the bin.go CLI, which can parse and encode binary
patch data. Once parsed, fragments were manipulated with truncate and
dd, encoded, and placed in the patch files.
Covers basic literal and delta application. Input files were created by
using dd and the 'conv=notrunc' option to modify sections of files
created from /dev/urandom. All file start with two null bytes to
convince Git they are binary.
This allows callers to provide patches with commit or email headers and
then retrieve that leading content for additional parsing without
having to identify where the first file in the patch starts.
For now, this uses JSON to print objects on error, which is hard to
debug. It should probably use something like google/go-cmp instead,
because these objects are now too large for direct comparison.
Billy Keyes