Re: [GSoC][PATCH v3 0/4] t: port reftable/readwrite_test.c to the unit testing framework

> Changes in v3:
> - Order the header files alphabetically in
>   t/unit-tests/t-reftable-readwrite.c in patch 1.
> - use check_char() and check_int() instead of check() at two
>   instances in patch 1.
> - #include 'reftable/basics.h' in patch 2 when introducing
>   free_names() in the test file.
>
> CI/PR: https://github.com/gitgitgadget/git/pull/1770
>
> Chandra Pratap(4):
> t: move reftable/readwrite_test.c to the unit testing framework
> t-reftable-readwrite: use free_names() instead of a for loop
> t-reftable-readwrite: use 'for' in place of infinite 'while' loops
> t-reftable-readwrite: add test for known error