git/t/t6431-merge-criscross.sh
Elijah Newren 919df31955 Collect merge-related tests to t64xx
The tests for the merge machinery are spread over several places.
Collect them into t64xx for simplicity.  Some notes:

t60[234]*.sh:
  Merge tests started in t602*, overgrew bisect and remote tracking
  tests in t6030, t6040, and t6041, and nearly overtook replace tests
  in t6050.  This made picking out relevant tests that I wanted to run
  in a tighter loop slightly more annoying for years.

t303*.sh:
  These started out as tests for the 'merge-recursive' toplevel command,
  but did not restrict to that and had lots of overlap with the
  underlying merge machinery.
t7405, t7613:
  submodule-specific merge logic started out in submodule.c but was
  moved to merge-recursive.c in commit 18cfc08866 ("submodule.c: move
  submodule merging to merge-recursive.c", 2018-05-15).  Since these
  tests are about the logic found in the merge machinery, moving these
  tests to be with the merge tests makes sense.

t7607, t7609:
  Having tests spread all over the place makes it more likely that
  additional tests related to a certain piece of logic grow in all those
  other places.  Much like t303*.sh, these two tests were about the
  underlying merge machinery rather than outer levels.

Tests that were NOT moved:

t76[01]*.sh:
  Other than the four tests mentioned above, the remaining tests in
  t76[01]*.sh are related to non-recursive merge strategies, parameter
  parsing, and other stuff associated with the highlevel builtin/merge.c
  rather than the recursive merge machinery.

t3[45]*.sh:
  The rebase testcases in t34*.sh also test the merge logic pretty
  heavily; sometimes changes I make only trigger failures in the rebase
  tests.  The rebase tests are already nicely coupled together, though,
  and I didn't want to mess that up.  Similar comments apply for the
  cherry-pick tests in t35*.sh.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-10 15:59:00 -07:00

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#!/bin/sh
test_description='merge-recursive backend test'
. ./test-lib.sh
# A <- create some files
# / \
# B C <- cause rename/delete conflicts between B and C
# / \
# |\ /|
# | D E |
# | \ / |
# | X |
# | / \ |
# | / \ |
# |/ \|
# F G <- merge E into B, D into C
# \ /
# \ /
# \ /
# H <- recursive merge crashes
#
# initialize
test_expect_success 'setup repo with criss-cross history' '
mkdir data &&
# create a bunch of files
n=1 &&
while test $n -le 10
do
echo $n > data/$n &&
n=$(($n+1)) ||
return 1
done &&
# check them in
git add data &&
git commit -m A &&
git branch A &&
# a file in one branch
git checkout -b B A &&
git rm data/9 &&
git add data &&
git commit -m B &&
# with a branch off of it
git branch D &&
# put some commits on D
git checkout D &&
echo testD > data/testD &&
git add data &&
git commit -m D &&
# back up to the top, create another branch and cause
# a rename conflict with the file we deleted earlier
git checkout -b C A &&
git mv data/9 data/new-9 &&
git add data &&
git commit -m C &&
# with a branch off of it
git branch E &&
# put a commit on E
git checkout E &&
echo testE > data/testE &&
git add data &&
git commit -m E &&
# now, merge E into B
git checkout B &&
test_must_fail git merge E &&
# force-resolve
git add data &&
git commit -m F &&
git branch F &&
# and merge D into C
git checkout C &&
test_must_fail git merge D &&
# force-resolve
git add data &&
git commit -m G &&
git branch G
'
test_expect_success 'recursive merge between F and G does not cause segfault' '
git merge F
'
test_done