[Outreachy PATCH v2 0/2] t0410: fix exit code and hash assumptions in the missing-tree test

[Dorine Tipo <dorine.a.tipo@gmail.com>]

This series cleans up the 'rev-list stops traversal at missing and
promised tree' test in t0410.

Changes since v1:
 - 1/2: expanded the log message to note that the original pipeline
   silently assumed the first tree in the ls-tree output was the one
   we wanted, and that naming a_dir explicitly is an improvement.
   Thanks, Junio.
 - 2/2: unchanged.

I ran the full test suite with both SHA-1 and SHA-256, and it passes.

Dorine Tipo (2):
  t0410: use rev-parse to get the subtree OID
  t0410: keep git's exit code in test_grep calls

 t/t0410-partial-clone.sh | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

Range-diff against v1:
1:  b8f514e0a2 ! 1:  dcf6c7da4c t0410: use rev-parse to get the subtree OID
    @@ Commit message
     
         The pipeline goes against t/README which says not to pipe the output
         of a git command, since only the last command's exit code is kept.
    -    'cut -b13-52' also assumes a 40-character SHA-1 name, so under SHA-256
    -    TREE2 holds an abbreviated OID.
    +    It also silently assumes that the first tree in the ls-tree output is
    +    the one we want, without checking which path it is stored at.
    +    And 'cut -b13-52' also assumes a 40-character SHA-1 name, so under
    +    SHA-256 TREE2 holds an abbreviated OID.
     
    -    Use 'git rev-parse HEAD:a_dir' instead. It returns the full OID in a
    -    single command, the same way TREE is computed with
    -    'git rev-parse foo^{tree}' just above.
    +    Use 'git rev-parse HEAD:a_dir' instead. It names the directory we are
    +    interested in explicitly and returns the full OID in a single command,
    +    the same way TREE is computed with 'git rev-parse foo^{tree}' just
    +    above.
     
    +    Helped-by: Junio C Hamano <gitster@pobox.com>
         Signed-off-by: Dorine Tipo <dorine.a.tipo@gmail.com>
     
      ## t/t0410-partial-clone.sh ##
2:  5823e65a88 = 2:  f810625e77 t0410: keep git's exit code in test_grep calls
-- 
2.34.1