tvl-depot/third_party/git/t/t6427-diff3-conflict-markers.sh
Vincent Ambo f4609b896f merge(3p/git): Merge git subtree at v2.29.2
This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because
there is some breakage in the git build related to the netrc
credentials helper which someone has taken care of in nixpkgs.

The stable channel is not used for anything other than git, so this
should be fine.

Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb
2020-11-21 19:45:56 +01:00

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#!/bin/sh
test_description='recursive merge diff3 style conflict markers'
. ./test-lib.sh
# Setup:
# L1
# \
# ?
# /
# R1
#
# Where:
# L1 and R1 both have a file named 'content' but have no common history
#
test_expect_success 'setup no merge base' '
test_create_repo no_merge_base &&
(
cd no_merge_base &&
git checkout -b L &&
test_commit A content A &&
git checkout --orphan R &&
test_commit B content B
)
'
test_expect_success 'check no merge base' '
(
cd no_merge_base &&
git checkout L^0 &&
test_must_fail git -c merge.conflictstyle=diff3 merge --allow-unrelated-histories -s recursive R^0 &&
grep "|||||| empty tree" content
)
'
# Setup:
# L1
# / \
# master ?
# \ /
# R1
#
# Where:
# L1 and R1 have modified the same file ('content') in conflicting ways
#
test_expect_success 'setup unique merge base' '
test_create_repo unique_merge_base &&
(
cd unique_merge_base &&
test_commit base content "1
2
3
4
5
" &&
git branch L &&
git branch R &&
git checkout L &&
test_commit L content "1
2
3
4
5
7" &&
git checkout R &&
git rm content &&
test_commit R renamed "1
2
3
4
5
six"
)
'
test_expect_success 'check unique merge base' '
(
cd unique_merge_base &&
git checkout L^0 &&
MASTER=$(git rev-parse --short master) &&
test_must_fail git -c merge.conflictstyle=diff3 merge -s recursive R^0 &&
grep "|||||| $MASTER:content" renamed
)
'
# Setup:
# L1---L2--L3
# / \ / \
# master X1 ?
# \ / \ /
# R1---R2--R3
#
# Where:
# commits L1 and R1 have modified the same file in non-conflicting ways
# X1 is an auto-generated merge-base used when merging L1 and R1
# commits L2 and R2 are merges of R1 and L1 into L1 and R1, respectively
# commits L3 and R3 both modify 'content' in conflicting ways
#
test_expect_success 'setup multiple merge bases' '
test_create_repo multiple_merge_bases &&
(
cd multiple_merge_bases &&
test_commit initial content "1
2
3
4
5" &&
git branch L &&
git branch R &&
# Create L1
git checkout L &&
test_commit L1 content "0
1
2
3
4
5" &&
# Create R1
git checkout R &&
test_commit R1 content "1
2
3
4
5
6" &&
# Create L2
git checkout L &&
git merge R1 &&
# Create R2
git checkout R &&
git merge L1 &&
# Create L3
git checkout L &&
test_commit L3 content "0
1
2
3
4
5
A" &&
# Create R3
git checkout R &&
git rm content &&
test_commit R3 renamed "0
2
3
4
5
six"
)
'
test_expect_success 'check multiple merge bases' '
(
cd multiple_merge_bases &&
git checkout L^0 &&
test_must_fail git -c merge.conflictstyle=diff3 merge -s recursive R^0 &&
grep "|||||| merged common ancestors:content" renamed
)
'
test_expect_success 'rebase --merge describes parent of commit being picked' '
test_create_repo rebase &&
(
cd rebase &&
test_commit base file &&
test_commit master file &&
git checkout -b side HEAD^ &&
test_commit side file &&
test_must_fail git -c merge.conflictstyle=diff3 rebase --merge master &&
grep "||||||| parent of" file
)
'
test_expect_success 'rebase --apply describes fake ancestor base' '
(
cd rebase &&
git rebase --abort &&
test_must_fail git -c merge.conflictstyle=diff3 rebase --apply master &&
grep "||||||| constructed merge base" file
)
'
test_done