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git/t/t6010-merge-base.sh

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Add test case for merge-base. Although it was shown that the "full contamination" was not really full during the list discussion, the series improves things without incurring extra parsing cost, and here is a test to check that. Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-11 12:00:52 +03:00
#!/bin/sh
#
# Copyright (c) 2005 Junio C Hamano
#
merge-base --independent to print reduced parent list in a merge While show-branch --independent does not support more than MAX_REVS revs, git internally supports more with a different algorithm. Expose that functionality as "git merge-base --independent". This should help scripts to catch up with builtin merge in supporting dodecapus. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 11:01:54 +04:00
test_description='Merge base and parent list computation.
Add test case for merge-base. Although it was shown that the "full contamination" was not really full during the list discussion, the series improves things without incurring extra parsing cost, and here is a test to check that. Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-11 12:00:52 +03:00
'
. ./test-lib.sh
tests: eliminate unnecessary setup test assertions Most of git's tests write files and define shell functions and variables that will last throughout a test script at the top of the script, before all test assertions: . ./test-lib.sh VAR='some value' export VAR >empty fn () { do something } test_expect_success 'setup' ' ... nontrivial commands go here ... ' Two scripts use a different style with this kind of trivial code enclosed by a test assertion; fix them. The usual style is easier to read since there is less indentation to keep track of and no need to worry about nested quotes; and on the other hand, because the commands in question are trivial, it should not make the test suite any worse at catching future bugs in git. While at it, make some other small tweaks: - spell function definitions with a space before () for consistency with other scripts; - use the self-contained command "git mktree </dev/null" in preference to "git write-tree" which looks at the index when writing an empty tree. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-07 00:58:52 +04:00
M=1130000000
Z=+0000
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
tests: eliminate unnecessary setup test assertions Most of git's tests write files and define shell functions and variables that will last throughout a test script at the top of the script, before all test assertions: . ./test-lib.sh VAR='some value' export VAR >empty fn () { do something } test_expect_success 'setup' ' ... nontrivial commands go here ... ' Two scripts use a different style with this kind of trivial code enclosed by a test assertion; fix them. The usual style is easier to read since there is less indentation to keep track of and no need to worry about nested quotes; and on the other hand, because the commands in question are trivial, it should not make the test suite any worse at catching future bugs in git. While at it, make some other small tweaks: - spell function definitions with a space before () for consistency with other scripts; - use the self-contained command "git mktree </dev/null" in preference to "git write-tree" which looks at the index when writing an empty tree. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-07 00:58:52 +04:00
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
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
tests: eliminate unnecessary setup test assertions Most of git's tests write files and define shell functions and variables that will last throughout a test script at the top of the script, before all test assertions: . ./test-lib.sh VAR='some value' export VAR >empty fn () { do something } test_expect_success 'setup' ' ... nontrivial commands go here ... ' Two scripts use a different style with this kind of trivial code enclosed by a test assertion; fix them. The usual style is easier to read since there is less indentation to keep track of and no need to worry about nested quotes; and on the other hand, because the commands in question are trivial, it should not make the test suite any worse at catching future bugs in git. While at it, make some other small tweaks: - spell function definitions with a space before () for consistency with other scripts; - use the self-contained command "git mktree </dev/null" in preference to "git write-tree" which looks at the index when writing an empty tree. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-07 00:58:52 +04:00
doit () {
OFFSET=$1 &&
NAME=$2 &&
shift 2 &&
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
tests: eliminate unnecessary setup test assertions Most of git's tests write files and define shell functions and variables that will last throughout a test script at the top of the script, before all test assertions: . ./test-lib.sh VAR='some value' export VAR >empty fn () { do something } test_expect_success 'setup' ' ... nontrivial commands go here ... ' Two scripts use a different style with this kind of trivial code enclosed by a test assertion; fix them. The usual style is easier to read since there is less indentation to keep track of and no need to worry about nested quotes; and on the other hand, because the commands in question are trivial, it should not make the test suite any worse at catching future bugs in git. While at it, make some other small tweaks: - spell function definitions with a space before () for consistency with other scripts; - use the self-contained command "git mktree </dev/null" in preference to "git write-tree" which looks at the index when writing an empty tree. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-07 00:58:52 +04:00
PARENTS= &&
for P
do
PARENTS="${PARENTS}-p $P "
done &&
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
tests: eliminate unnecessary setup test assertions Most of git's tests write files and define shell functions and variables that will last throughout a test script at the top of the script, before all test assertions: . ./test-lib.sh VAR='some value' export VAR >empty fn () { do something } test_expect_success 'setup' ' ... nontrivial commands go here ... ' Two scripts use a different style with this kind of trivial code enclosed by a test assertion; fix them. The usual style is easier to read since there is less indentation to keep track of and no need to worry about nested quotes; and on the other hand, because the commands in question are trivial, it should not make the test suite any worse at catching future bugs in git. While at it, make some other small tweaks: - spell function definitions with a space before () for consistency with other scripts; - use the self-contained command "git mktree </dev/null" in preference to "git write-tree" which looks at the index when writing an empty tree. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-07 00:58:52 +04:00
GIT_COMMITTER_DATE="$(($M + $OFFSET)) $Z" &&
GIT_AUTHOR_DATE=$GIT_COMMITTER_DATE &&
export GIT_COMMITTER_DATE GIT_AUTHOR_DATE &&
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
tests: eliminate unnecessary setup test assertions Most of git's tests write files and define shell functions and variables that will last throughout a test script at the top of the script, before all test assertions: . ./test-lib.sh VAR='some value' export VAR >empty fn () { do something } test_expect_success 'setup' ' ... nontrivial commands go here ... ' Two scripts use a different style with this kind of trivial code enclosed by a test assertion; fix them. The usual style is easier to read since there is less indentation to keep track of and no need to worry about nested quotes; and on the other hand, because the commands in question are trivial, it should not make the test suite any worse at catching future bugs in git. While at it, make some other small tweaks: - spell function definitions with a space before () for consistency with other scripts; - use the self-contained command "git mktree </dev/null" in preference to "git write-tree" which looks at the index when writing an empty tree. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-07 00:58:52 +04:00
commit=$(echo $NAME | git commit-tree $T $PARENTS) &&
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
t: make many tests depend less on the refs being files Many tests are very focused on the file system representation of the loose and packed refs code. As there are plans to implement other ref storage systems, let's migrate these tests to a form that test the intent of the refs storage system instead of it internals. This will make clear to readers that these tests do not depend on which ref backend is used. The internals of the loose refs backend are still tested in t1400-update-ref.sh, whereas the tests changed in this patch focus on testing other aspects. This patch just takes care of many low hanging fruits. It does not try to completely solves the issue. Helped-by: Stefan Beller <sbeller@google.com> Helped-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: David Turner <dturner@twopensource.com> Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-23 08:25:17 +03:00
git update-ref "refs/tags/$NAME" "$commit" &&
tests: eliminate unnecessary setup test assertions Most of git's tests write files and define shell functions and variables that will last throughout a test script at the top of the script, before all test assertions: . ./test-lib.sh VAR='some value' export VAR >empty fn () { do something } test_expect_success 'setup' ' ... nontrivial commands go here ... ' Two scripts use a different style with this kind of trivial code enclosed by a test assertion; fix them. The usual style is easier to read since there is less indentation to keep track of and no need to worry about nested quotes; and on the other hand, because the commands in question are trivial, it should not make the test suite any worse at catching future bugs in git. While at it, make some other small tweaks: - spell function definitions with a space before () for consistency with other scripts; - use the self-contained command "git mktree </dev/null" in preference to "git write-tree" which looks at the index when writing an empty tree. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-07 00:58:52 +04:00
echo $commit
}
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
tests: eliminate unnecessary setup test assertions Most of git's tests write files and define shell functions and variables that will last throughout a test script at the top of the script, before all test assertions: . ./test-lib.sh VAR='some value' export VAR >empty fn () { do something } test_expect_success 'setup' ' ... nontrivial commands go here ... ' Two scripts use a different style with this kind of trivial code enclosed by a test assertion; fix them. The usual style is easier to read since there is less indentation to keep track of and no need to worry about nested quotes; and on the other hand, because the commands in question are trivial, it should not make the test suite any worse at catching future bugs in git. While at it, make some other small tweaks: - spell function definitions with a space before () for consistency with other scripts; - use the self-contained command "git mktree </dev/null" in preference to "git write-tree" which looks at the index when writing an empty tree. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-07 00:58:52 +04:00
test_expect_success 'setup' '
T=$(git mktree </dev/null)
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
'
Additional merge-base tests (revised) Signed-off-by: A Large Angry SCM <gitzilla@gmail.com>
2006-07-05 04:35:20 +04:00
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
test_expect_success 'set up G and H' '
# E---D---C---B---A
# \"-_ \ \
# \ `---------G \
# \ \
# F----------------H
E=$(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)
'
Additional merge-base tests (revised) Signed-off-by: A Large Angry SCM <gitzilla@gmail.com>
2006-07-05 04:35:20 +04:00
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
test_expect_success 'merge-base G H' '
git name-rev $B >expected &&
Additional merge-base tests (revised) Signed-off-by: A Large Angry SCM <gitzilla@gmail.com>
2006-07-05 04:35:20 +04:00
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
MB=$(git merge-base G H) &&
git name-rev "$MB" >actual.single &&
Additional merge-base tests (revised) Signed-off-by: A Large Angry SCM <gitzilla@gmail.com>
2006-07-05 04:35:20 +04:00
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
MB=$(git merge-base --all G H) &&
git name-rev "$MB" >actual.all &&
Additional merge-base tests (revised) Signed-off-by: A Large Angry SCM <gitzilla@gmail.com>
2006-07-05 04:35:20 +04:00
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
MB=$(git show-branch --merge-base G H) &&
git name-rev "$MB" >actual.sb &&
Additional merge-base tests (revised) Signed-off-by: A Large Angry SCM <gitzilla@gmail.com>
2006-07-05 04:35:20 +04:00
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
test_cmp expected actual.single &&
test_cmp expected actual.all &&
test_cmp expected actual.sb
'
t6010-merge-base.sh: Depict the octopus test graph ...so that it is easier to reuse it for other tests. Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-08-05 11:59:18 +04:00
merge-base --independent to print reduced parent list in a merge While show-branch --independent does not support more than MAX_REVS revs, git internally supports more with a different algorithm. Expose that functionality as "git merge-base --independent". This should help scripts to catch up with builtin merge in supporting dodecapus. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 11:01:54 +04:00
test_expect_success 'merge-base/show-branch --independent' '
git name-rev "$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
'
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
test_expect_success 'unsynchronized clocks' '
# This test is to demonstrate that relying on timestamps in a distributed
# SCM to provide a _consistent_ partial ordering of commits leads to
# insanity.
#
# Relative
# Structure timestamps
#
# PL PR +4 +4
# / \/ \ / \/ \
# L2 C2 R2 +3 -1 +3
# | | | | | |
# L1 C1 R1 +2 -2 +2
# | | | | | |
# L0 C0 R0 +1 -3 +1
# \ | / \ | /
# S 0
#
# The left and right chains of commits can be of any length and complexity as
# long as all of the timestamps are greater than that of S.
S=$(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 $C2) &&
tests: add missing && Breaks in a test assertion's && chain can potentially hide failures from earlier commands in the chain. Commands intended to fail should be marked with !, test_must_fail, or test_might_fail. The examples in this patch do not require that. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-10-31 04:46:54 +03:00
PR=$(doit 4 PR $C2 $R2) &&
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
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 "$MB" >actual.all &&
test_cmp expected actual.single &&
test_cmp expected actual.all
'
merge-base-many: add trivial tests based on the documentation Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-30 10:51:41 +04:00
merge-base --independent to print reduced parent list in a merge While show-branch --independent does not support more than MAX_REVS revs, git internally supports more with a different algorithm. Expose that functionality as "git merge-base --independent". This should help scripts to catch up with builtin merge in supporting dodecapus. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 11:01:54 +04:00
test_expect_success '--independent with unsynchronized clocks' '
IB=$(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
'
merge-base-many: add trivial tests based on the documentation Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-30 10:51:41 +04:00
test_expect_success 'merge-base for octopus-step (setup)' '
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
# 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 &&
merge-base-many: add trivial tests based on the documentation Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-30 10:51:41 +04:00
git checkout MM1 &&
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
test_commit MM-r &&
test_commit MM-s &&
test_commit MM-t &&
test_commit MMB &&
merge-base-many: add trivial tests based on the documentation Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-30 10:51:41 +04:00
git checkout MMR &&
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
test_commit MM-u &&
test_commit MM-v &&
test_commit MM-w &&
test_commit MM-x &&
test_commit MMC
merge-base-many: add trivial tests based on the documentation Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-30 10:51:41 +04:00
'
test_expect_success 'merge-base A B C' '
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
git rev-parse --verify MM1 >expected &&
git rev-parse --verify MMR >expected.sb &&
merge-base-many: add trivial tests based on the documentation Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-30 10:51:41 +04:00
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
git merge-base --all MMA MMB MMC >actual &&
merge-base --octopus to mimic show-branch --merge-base While show-branch --merge-base does not support more than MAX_REVS revs, git supports more with a different algorithm (v1.6.0-rc0~51^2~13, Introduce get_octopus_merge_bases() in commit.c, 2008-06-27). Expose that functionality. This should help scripts to catch up with builtin merge in supporting dodecapus. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 11:01:15 +04:00
git merge-base --all --octopus MMA MMB MMC >actual.common &&
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
git show-branch --merge-base MMA MMB MMC >actual.sb &&
test_cmp expected actual &&
merge-base --octopus to mimic show-branch --merge-base While show-branch --merge-base does not support more than MAX_REVS revs, git supports more with a different algorithm (v1.6.0-rc0~51^2~13, Introduce get_octopus_merge_bases() in commit.c, 2008-06-27). Expose that functionality. This should help scripts to catch up with builtin merge in supporting dodecapus. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 11:01:15 +04:00
test_cmp expected.sb actual.common &&
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
test_cmp expected.sb actual.sb
git-merge-base/git-show-branch --merge-base: Documentation and test Currently, the documentation suggests that 'git merge-base -a' and 'git show-branch --merge-base' are equivalent (in fact it claims that the former cannot handle more than two revs). Alas, the handling of more than two revs is very different. Document this by tests and correct the documentation to reflect this. Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-08-05 11:59:20 +04:00
'
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
test_expect_success 'criss-cross merge-base for octopus-step' '
merge-base-many: add trivial tests based on the documentation Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-30 10:51:41 +04:00
git reset --hard MMR &&
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
test_commit CC1 &&
merge-base-many: add trivial tests based on the documentation Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-30 10:51:41 +04:00
git reset --hard E &&
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
test_commit CC2 &&
test_tick &&
merge: refuse to create too cool a merge by default While it makes sense to allow merging unrelated histories of two projects that started independently into one, in the way "gitk" was merged to "git" itself aka "the coolest merge ever", such a merge is still an unusual event. Worse, if somebody creates an independent history by starting from a tarball of an established project and sends a pull request to the original project, "git merge" however happily creates such a merge without any sign of something unusual is happening. Teach "git merge" to refuse to create such a merge by default, unless the user passes a new "--allow-unrelated-histories" option to tell it that the user is aware that two unrelated projects are merged. Because such a "two project merge" is a rare event, a configuration option to always allow such a merge is not added. We could add the same option to "git pull" and have it passed through to underlying "git merge". I do not have a fundamental opposition against such a feature, but this commit does not do so and instead leaves it as low-hanging fruit for others, because such a "two project merge" would be done after fetching the other project into some location in the working tree of an existing project and making sure how well they fit together, it is sufficient to allow a local merge without such an option pass-through from "git pull" to "git merge". Many tests that are updated by this patch does the pass-through manually by turning: git pull something into its equivalent: git fetch something && git merge --allow-unrelated-histories FETCH_HEAD If somebody is inclined to add such an option, updated tests in this change need to be adjusted back to: git pull --allow-unrelated-histories something Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-03-18 23:21:09 +03:00
# E is a root commit unrelated to MMR root on which CC1 is based
git merge -s ours --allow-unrelated-histories CC1 &&
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
test_commit CC-o &&
test_commit CCB &&
merge-base-many: add trivial tests based on the documentation Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-30 10:51:41 +04:00
git reset --hard CC1 &&
merge: refuse to create too cool a merge by default While it makes sense to allow merging unrelated histories of two projects that started independently into one, in the way "gitk" was merged to "git" itself aka "the coolest merge ever", such a merge is still an unusual event. Worse, if somebody creates an independent history by starting from a tarball of an established project and sends a pull request to the original project, "git merge" however happily creates such a merge without any sign of something unusual is happening. Teach "git merge" to refuse to create such a merge by default, unless the user passes a new "--allow-unrelated-histories" option to tell it that the user is aware that two unrelated projects are merged. Because such a "two project merge" is a rare event, a configuration option to always allow such a merge is not added. We could add the same option to "git pull" and have it passed through to underlying "git merge". I do not have a fundamental opposition against such a feature, but this commit does not do so and instead leaves it as low-hanging fruit for others, because such a "two project merge" would be done after fetching the other project into some location in the working tree of an existing project and making sure how well they fit together, it is sufficient to allow a local merge without such an option pass-through from "git pull" to "git merge". Many tests that are updated by this patch does the pass-through manually by turning: git pull something into its equivalent: git fetch something && git merge --allow-unrelated-histories FETCH_HEAD If somebody is inclined to add such an option, updated tests in this change need to be adjusted back to: git pull --allow-unrelated-histories something Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-03-18 23:21:09 +03:00
# E is a root commit unrelated to MMR root on which CC1 is based
git merge -s ours --allow-unrelated-histories CC2 &&
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
test_commit CCA &&
git rev-parse CC1 CC2 >expected &&
git merge-base --all CCB CCA^^ CCA^^2 >actual &&
merge-base-many: add trivial tests based on the documentation Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-30 10:51:41 +04:00
t6010 (merge-base): modernize style Guard setup with test_expect_success, put the opening quote starting each test on the same line as the test_expect_* invocation, and combine related actions into single tests. While at it: - use test_cmp instead of expr or test $foo = $bar, for more helpful output with -v when tests fail; - use test_commit for brevity. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-17 10:57:12 +04:00
sort expected >expected.sorted &&
sort actual >actual.sorted &&
test_cmp expected.sorted actual.sorted
merge-base-many: add trivial tests based on the documentation Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-30 10:51:41 +04:00
'
merge-base: teach "--fork-point" mode The "git pull --rebase" command computes the fork point of the branch being rebased using the reflog entries of the "base" branch (typically a remote-tracking branch) the branch's work was based on, in order to cope with the case in which the "base" branch has been rewound and rebuilt. For example, if the history looked like this: o---B1 / ---o---o---B2--o---o---o---Base \ B3 \ Derived where the current tip of the "base" branch is at Base, but earlier fetch observed that its tip used to be B3 and then B2 and then B1 before getting to the current commit, and the branch being rebased on top of the latest "base" is based on commit B3, it tries to find B3 by going through the output of "git rev-list --reflog base" (i.e. Base, B1, B2, B3) until it finds a commit that is an ancestor of the current tip "Derived". Internally, we have get_merge_bases_many() that can compute this with one-go. We would want a merge-base between Derived and a fictitious merge commit that would result by merging all the historical tips of "base". When such a commit exist, we should get a single result, which exactly match one of the reflog entries of "base". Teach "git merge-base" a new mode, "--fork-point", to compute exactly that. Helped-by: Martin von Zweigbergk <martinvonz@gmail.com> Helped-by: John Keeping <john@keeping.me.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-10-24 03:47:32 +04:00
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
t6000-t6999: fix broken &&-chains Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-02 03:24:02 +03:00
done &&
merge-base: teach "--fork-point" mode The "git pull --rebase" command computes the fork point of the branch being rebased using the reflog entries of the "base" branch (typically a remote-tracking branch) the branch's work was based on, in order to cope with the case in which the "base" branch has been rewound and rebuilt. For example, if the history looked like this: o---B1 / ---o---o---B2--o---o---o---Base \ B3 \ Derived where the current tip of the "base" branch is at Base, but earlier fetch observed that its tip used to be B3 and then B2 and then B1 before getting to the current commit, and the branch being rebased on top of the latest "base" is based on commit B3, it tries to find B3 by going through the output of "git rev-list --reflog base" (i.e. Base, B1, B2, B3) until it finds a commit that is an ancestor of the current tip "Derived". Internally, we have get_merge_bases_many() that can compute this with one-go. We would want a merge-base between Derived and a fictitious merge commit that would result by merging all the historical tips of "base". When such a commit exist, we should get a single result, which exactly match one of the reflog entries of "base". Teach "git merge-base" a new mode, "--fork-point", to compute exactly that. Helped-by: Martin von Zweigbergk <martinvonz@gmail.com> Helped-by: John Keeping <john@keeping.me.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-10-24 03:47:32 +04:00
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
'
merge-base: handle --fork-point without reflog The --fork-point option looks in the reflog to try to find where a derived branch forked from a base branch. However, if the reflog for the base branch is totally empty (as it commonly is right after cloning, which does not write a reflog entry), then our for_each_reflog call will not find any entries, and we will come up with no merge base, even though there may be one with the current tip of the base. We can fix this by just adding the current tip to our list of collected entries. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-12 23:10:40 +03:00
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
'
merge-base --octopus: reduce the result from get_octopus_merge_bases() Scripts that use "merge-base --octopus" could do the reducing themselves, but most of them are expected to want to get the reduced results without having to do any work themselves. Tests are taken from a message by Василий Макаров <einmalfel@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> --- We might want to vet the existing callers of the underlying get_octopus_merge_bases() and find out if _all_ of them are doing anything extra (like deduping) because the machinery can return duplicate results. And if that is the case, then we may want to move the dedupling down the callchain instead of having it here.
2013-12-30 23:58:54 +04:00
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
'
Add test case for merge-base. Although it was shown that the "full contamination" was not really full during the list discussion, the series improves things without incurring extra parsing cost, and here is a test to check that. Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-11 12:00:52 +03:00
test_done