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12bf828348
Consider this graph:
D---E (topic, HEAD)
/ /
A---B---C (master)
\
F (topic2)
and the following three commands:
1. git rebase -i -p A
2. git rebase -i -p --onto F A
3. git rebase -i -p B
Currently, (1) and (2) will pick B, D, C, and E onto A and F,
respectively. However, (3) will only pick D and E onto B, but not C,
which is inconsistent with (1) and (2). As a result, we cannot modify C
during the interactive-rebase.
The current behavior also creates a bug if we do:
4. git rebase -i -p C
In (4), E is never picked. And since interactive-rebase resets "HEAD"
to "onto" before picking any commits, D and E are lost after the
interactive-rebase.
This patch fixes the inconsistency and bug by ensuring that all children
of upstream are always picked. This essentially reverts the commit:
d80d6bc146
When compiling the todo list, commits reachable from "upstream" should
never be skipped under any conditions. Otherwise, we lose the ability
to modify them like (3), and create a bug like (4).
Two of the tests contain a scenario like (3). Since the new behavior
added more commits for picking, these tests need to be updated to
account for the additional pick lines. A new test has also been added
for (4).
Signed-off-by: Andrew Wong <andrew.kw.w@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
152 lines
3.5 KiB
Bash
Executable file
152 lines
3.5 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright(C) 2008 Stephen Habermann & Andreas Ericsson
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#
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test_description='git rebase -p should preserve merges
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Run "git rebase -p" and check that merges are properly carried along
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'
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. ./test-lib.sh
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GIT_AUTHOR_EMAIL=bogus_email_address
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export GIT_AUTHOR_EMAIL
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# Clone 1 (trivial merge):
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#
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# A1--A2 <-- origin/master
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# \ \
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# B1--M <-- topic
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# \
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# B2 <-- origin/topic
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#
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# Clone 2 (conflicting merge):
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#
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# A1--A2--B3 <-- origin/master
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# \ \
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# B1------M <-- topic
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# \
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# B2 <-- origin/topic
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#
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# Clone 3 (no-ff merge):
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#
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# A1--A2--B3 <-- origin/master
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# \
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# B1------M <-- topic
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# \ /
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# \--A3 <-- topic2
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# \
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# B2 <-- origin/topic
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#
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# Clone 4 (merge using second parent as base):
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#
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# A1--A2--B3 <-- origin/master
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# \
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# B1--A3--M <-- topic
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# \ /
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# \--A4 <-- topic2
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# \
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# B2 <-- origin/topic
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test_expect_success 'setup for merge-preserving rebase' \
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'echo First > A &&
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git add A &&
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git commit -m "Add A1" &&
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git checkout -b topic &&
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echo Second > B &&
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git add B &&
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git commit -m "Add B1" &&
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git checkout -f master &&
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echo Third >> A &&
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git commit -a -m "Modify A2" &&
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git clone ./. clone1 &&
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(cd clone1 &&
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git checkout -b topic origin/topic &&
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git merge origin/master
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) &&
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git clone ./. clone4 &&
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(
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cd clone4 &&
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git checkout -b topic origin/topic &&
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git merge origin/master
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) &&
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echo Fifth > B &&
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git add B &&
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git commit -m "Add different B" &&
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git clone ./. clone2 &&
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(
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cd clone2 &&
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git checkout -b topic origin/topic &&
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test_must_fail git merge origin/master &&
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echo Resolved >B &&
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git add B &&
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git commit -m "Merge origin/master into topic"
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) &&
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git clone ./. clone3 &&
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(
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cd clone3 &&
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git checkout -b topic2 origin/topic &&
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echo Sixth > A &&
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git commit -a -m "Modify A3" &&
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git checkout -b topic origin/topic &&
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git merge --no-ff topic2
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) &&
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git checkout topic &&
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echo Fourth >> B &&
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git commit -a -m "Modify B2"
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'
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test_expect_success 'rebase -p fakes interactive rebase' '
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(
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cd clone1 &&
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git fetch &&
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git rebase -p origin/topic &&
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test 1 = $(git rev-list --all --pretty=oneline | grep "Modify A" | wc -l) &&
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test 1 = $(git rev-list --all --pretty=oneline | grep "Merge remote-tracking branch " | wc -l)
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)
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'
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test_expect_success '--continue works after a conflict' '
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(
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cd clone2 &&
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git fetch &&
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test_must_fail git rebase -p origin/topic &&
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test 2 = $(git ls-files B | wc -l) &&
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echo Resolved again > B &&
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test_must_fail git rebase --continue &&
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grep "^@@@ " .git/rebase-merge/patch &&
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git add B &&
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git rebase --continue &&
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test 1 = $(git rev-list --all --pretty=oneline | grep "Modify A" | wc -l) &&
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test 1 = $(git rev-list --all --pretty=oneline | grep "Add different" | wc -l) &&
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test 1 = $(git rev-list --all --pretty=oneline | grep "Merge origin" | wc -l)
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)
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'
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test_expect_success 'rebase -p preserves no-ff merges' '
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(
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cd clone3 &&
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git fetch &&
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git rebase -p origin/topic &&
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test 3 = $(git rev-list --all --pretty=oneline | grep "Modify A" | wc -l) &&
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test 1 = $(git rev-list --all --pretty=oneline | grep "Merge branch" | wc -l)
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)
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'
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test_expect_success 'rebase -p works when base inside second parent' '
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(
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cd clone4 &&
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git fetch &&
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git rebase -p HEAD^2 &&
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test 1 = $(git rev-list --all --pretty=oneline | grep "Modify A" | wc -l) &&
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test 1 = $(git rev-list --all --pretty=oneline | grep "Modify B" | wc -l) &&
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test 1 = $(git rev-list --all --pretty=oneline | grep "Merge remote-tracking branch " | wc -l)
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)
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'
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test_done
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