mirror of
https://github.com/git/git
synced 2024-08-23 18:00:25 +00:00
![Eric Sunshine](/assets/img/avatar_default.png)
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
309 lines
7.1 KiB
Bash
Executable file
309 lines
7.1 KiB
Bash
Executable file
#!/bin/sh
|
|
#
|
|
# Copyright (c) 2005 Junio C Hamano
|
|
#
|
|
|
|
test_description='Merge base and parent list computation.
|
|
'
|
|
|
|
. ./test-lib.sh
|
|
|
|
M=1130000000
|
|
Z=+0000
|
|
|
|
GIT_COMMITTER_EMAIL=git@comm.iter.xz
|
|
GIT_COMMITTER_NAME='C O Mmiter'
|
|
GIT_AUTHOR_NAME='A U Thor'
|
|
GIT_AUTHOR_EMAIL=git@au.thor.xz
|
|
export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL
|
|
|
|
doit () {
|
|
OFFSET=$1 &&
|
|
NAME=$2 &&
|
|
shift 2 &&
|
|
|
|
PARENTS= &&
|
|
for P
|
|
do
|
|
PARENTS="${PARENTS}-p $P "
|
|
done &&
|
|
|
|
GIT_COMMITTER_DATE="$(($M + $OFFSET)) $Z" &&
|
|
GIT_AUTHOR_DATE=$GIT_COMMITTER_DATE &&
|
|
export GIT_COMMITTER_DATE GIT_AUTHOR_DATE &&
|
|
|
|
commit=$(echo $NAME | git commit-tree $T $PARENTS) &&
|
|
|
|
git update-ref "refs/tags/$NAME" "$commit" &&
|
|
echo $commit
|
|
}
|
|
|
|
test_expect_success 'setup' '
|
|
T=$(git mktree </dev/null)
|
|
'
|
|
|
|
test_expect_success 'set up G and H' '
|
|
# E---D---C---B---A
|
|
# \"-_ \ \
|
|
# \ `---------G \
|
|
# \ \
|
|
# F----------------H
|
|
E=$(doit 5 E) &&
|
|
D=$(doit 4 D $E) &&
|
|
F=$(doit 6 F $E) &&
|
|
C=$(doit 3 C $D) &&
|
|
B=$(doit 2 B $C) &&
|
|
A=$(doit 1 A $B) &&
|
|
G=$(doit 7 G $B $E) &&
|
|
H=$(doit 8 H $A $F)
|
|
'
|
|
|
|
test_expect_success 'merge-base G H' '
|
|
git name-rev $B >expected &&
|
|
|
|
MB=$(git merge-base G H) &&
|
|
git name-rev "$MB" >actual.single &&
|
|
|
|
MB=$(git merge-base --all G H) &&
|
|
git name-rev "$MB" >actual.all &&
|
|
|
|
MB=$(git show-branch --merge-base G H) &&
|
|
git name-rev "$MB" >actual.sb &&
|
|
|
|
test_cmp expected actual.single &&
|
|
test_cmp expected actual.all &&
|
|
test_cmp expected actual.sb
|
|
'
|
|
|
|
test_expect_success 'merge-base/show-branch --independent' '
|
|
git name-rev "$H" >expected1 &&
|
|
git name-rev "$H" "$G" >expected2 &&
|
|
|
|
parents=$(git merge-base --independent H) &&
|
|
git name-rev $parents >actual1.mb &&
|
|
parents=$(git merge-base --independent A H G) &&
|
|
git name-rev $parents >actual2.mb &&
|
|
|
|
parents=$(git show-branch --independent H) &&
|
|
git name-rev $parents >actual1.sb &&
|
|
parents=$(git show-branch --independent A H G) &&
|
|
git name-rev $parents >actual2.sb &&
|
|
|
|
test_cmp expected1 actual1.mb &&
|
|
test_cmp expected2 actual2.mb &&
|
|
test_cmp expected1 actual1.sb &&
|
|
test_cmp expected2 actual2.sb
|
|
'
|
|
|
|
test_expect_success 'unsynchronized clocks' '
|
|
# This test is to demonstrate that relying on timestamps in a distributed
|
|
# SCM to provide a _consistent_ partial ordering of commits leads to
|
|
# insanity.
|
|
#
|
|
# Relative
|
|
# Structure timestamps
|
|
#
|
|
# PL PR +4 +4
|
|
# / \/ \ / \/ \
|
|
# L2 C2 R2 +3 -1 +3
|
|
# | | | | | |
|
|
# L1 C1 R1 +2 -2 +2
|
|
# | | | | | |
|
|
# L0 C0 R0 +1 -3 +1
|
|
# \ | / \ | /
|
|
# S 0
|
|
#
|
|
# The left and right chains of commits can be of any length and complexity as
|
|
# long as all of the timestamps are greater than that of S.
|
|
|
|
S=$(doit 0 S) &&
|
|
|
|
C0=$(doit -3 C0 $S) &&
|
|
C1=$(doit -2 C1 $C0) &&
|
|
C2=$(doit -1 C2 $C1) &&
|
|
|
|
L0=$(doit 1 L0 $S) &&
|
|
L1=$(doit 2 L1 $L0) &&
|
|
L2=$(doit 3 L2 $L1) &&
|
|
|
|
R0=$(doit 1 R0 $S) &&
|
|
R1=$(doit 2 R1 $R0) &&
|
|
R2=$(doit 3 R2 $R1) &&
|
|
|
|
PL=$(doit 4 PL $L2 $C2) &&
|
|
PR=$(doit 4 PR $C2 $R2) &&
|
|
|
|
git name-rev $C2 >expected &&
|
|
|
|
MB=$(git merge-base PL PR) &&
|
|
git name-rev "$MB" >actual.single &&
|
|
|
|
MB=$(git merge-base --all PL PR) &&
|
|
git name-rev "$MB" >actual.all &&
|
|
|
|
test_cmp expected actual.single &&
|
|
test_cmp expected actual.all
|
|
'
|
|
|
|
test_expect_success '--independent with unsynchronized clocks' '
|
|
IB=$(doit 0 IB) &&
|
|
I1=$(doit -10 I1 $IB) &&
|
|
I2=$(doit -9 I2 $I1) &&
|
|
I3=$(doit -8 I3 $I2) &&
|
|
I4=$(doit -7 I4 $I3) &&
|
|
I5=$(doit -6 I5 $I4) &&
|
|
I6=$(doit -5 I6 $I5) &&
|
|
I7=$(doit -4 I7 $I6) &&
|
|
I8=$(doit -3 I8 $I7) &&
|
|
IH=$(doit -2 IH $I8) &&
|
|
|
|
echo $IH >expected &&
|
|
git merge-base --independent IB IH >actual &&
|
|
test_cmp expected actual
|
|
'
|
|
|
|
test_expect_success 'merge-base for octopus-step (setup)' '
|
|
# Another set to demonstrate base between one commit and a merge
|
|
# in the documentation.
|
|
#
|
|
# * C (MMC) * B (MMB) * A (MMA)
|
|
# * o * o * o
|
|
# * o * o * o
|
|
# * o * o * o
|
|
# * o | _______/
|
|
# | |/
|
|
# | * 1 (MM1)
|
|
# | _______/
|
|
# |/
|
|
# * root (MMR)
|
|
|
|
test_commit MMR &&
|
|
test_commit MM1 &&
|
|
test_commit MM-o &&
|
|
test_commit MM-p &&
|
|
test_commit MM-q &&
|
|
test_commit MMA &&
|
|
git checkout MM1 &&
|
|
test_commit MM-r &&
|
|
test_commit MM-s &&
|
|
test_commit MM-t &&
|
|
test_commit MMB &&
|
|
git checkout MMR &&
|
|
test_commit MM-u &&
|
|
test_commit MM-v &&
|
|
test_commit MM-w &&
|
|
test_commit MM-x &&
|
|
test_commit MMC
|
|
'
|
|
|
|
test_expect_success 'merge-base A B C' '
|
|
git rev-parse --verify MM1 >expected &&
|
|
git rev-parse --verify MMR >expected.sb &&
|
|
|
|
git merge-base --all MMA MMB MMC >actual &&
|
|
git merge-base --all --octopus MMA MMB MMC >actual.common &&
|
|
git show-branch --merge-base MMA MMB MMC >actual.sb &&
|
|
|
|
test_cmp expected actual &&
|
|
test_cmp expected.sb actual.common &&
|
|
test_cmp expected.sb actual.sb
|
|
'
|
|
|
|
test_expect_success 'criss-cross merge-base for octopus-step' '
|
|
git reset --hard MMR &&
|
|
test_commit CC1 &&
|
|
git reset --hard E &&
|
|
test_commit CC2 &&
|
|
test_tick &&
|
|
# E is a root commit unrelated to MMR root on which CC1 is based
|
|
git merge -s ours --allow-unrelated-histories CC1 &&
|
|
test_commit CC-o &&
|
|
test_commit CCB &&
|
|
git reset --hard CC1 &&
|
|
# E is a root commit unrelated to MMR root on which CC1 is based
|
|
git merge -s ours --allow-unrelated-histories CC2 &&
|
|
test_commit CCA &&
|
|
|
|
git rev-parse CC1 CC2 >expected &&
|
|
git merge-base --all CCB CCA^^ CCA^^2 >actual &&
|
|
|
|
sort expected >expected.sorted &&
|
|
sort actual >actual.sorted &&
|
|
test_cmp expected.sorted actual.sorted
|
|
'
|
|
|
|
test_expect_success 'using reflog to find the fork point' '
|
|
git reset --hard &&
|
|
git checkout -b base $E &&
|
|
|
|
(
|
|
for count in 1 2 3
|
|
do
|
|
git commit --allow-empty -m "Base commit #$count" &&
|
|
git rev-parse HEAD >expect$count &&
|
|
git checkout -B derived &&
|
|
git commit --allow-empty -m "Derived #$count" &&
|
|
git rev-parse HEAD >derived$count &&
|
|
git checkout -B base $E || exit 1
|
|
done &&
|
|
|
|
for count in 1 2 3
|
|
do
|
|
git merge-base --fork-point base $(cat derived$count) >actual &&
|
|
test_cmp expect$count actual || exit 1
|
|
done
|
|
|
|
) &&
|
|
# check that we correctly default to HEAD
|
|
git checkout derived &&
|
|
git merge-base --fork-point base >actual &&
|
|
test_cmp expect3 actual
|
|
'
|
|
|
|
test_expect_success '--fork-point works with empty reflog' '
|
|
git -c core.logallrefupdates=false branch no-reflog base &&
|
|
git merge-base --fork-point no-reflog derived &&
|
|
test_cmp expect3 actual
|
|
'
|
|
|
|
test_expect_success 'merge-base --octopus --all for complex tree' '
|
|
# Best common ancestor for JE, JAA and JDD is JC
|
|
# JE
|
|
# / |
|
|
# / |
|
|
# / |
|
|
# JAA / |
|
|
# |\ / |
|
|
# | \ | JDD |
|
|
# | \ |/ | |
|
|
# | JC JD |
|
|
# | | /| |
|
|
# | |/ | |
|
|
# JA | | |
|
|
# |\ /| | |
|
|
# X JB | X X
|
|
# \ \ | / /
|
|
# \__\|/___/
|
|
# J
|
|
test_commit J &&
|
|
test_commit JB &&
|
|
git reset --hard J &&
|
|
test_commit JC &&
|
|
git reset --hard J &&
|
|
test_commit JTEMP1 &&
|
|
test_merge JA JB &&
|
|
test_merge JAA JC &&
|
|
git reset --hard J &&
|
|
test_commit JTEMP2 &&
|
|
test_merge JD JB &&
|
|
test_merge JDD JC &&
|
|
git reset --hard J &&
|
|
test_commit JTEMP3 &&
|
|
test_merge JE JC &&
|
|
git rev-parse JC >expected &&
|
|
git merge-base --all --octopus JAA JDD JE >actual &&
|
|
test_cmp expected actual
|
|
'
|
|
|
|
test_done
|