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Revision 20c3fe762105a29150fd21e3e0a340bca7890848 authored by Paul Tan on 06 June 2015, 11:46:10 UTC, committed by Junio C Hamano on 08 June 2015, 20:09:20 UTC 
am --abort: revert changes introduced by failed 3way merge
 
Even when a merge conflict occurs with am --3way, the index will be
modified with the results of any successfully merged files. These
changes to the index will not be reverted with a
"git read-tree --reset -u HEAD ORIG_HEAD", as git read-tree will not be
aware of how the current index differs from HEAD or ORIG_HEAD.

To fix this, we first reset any conflicting entries in the index. The
resulting index will contain the results of successfully merged files
introduced by the failed merge. We write this index to a tree, and then
use git read-tree to fast-forward this "index tree" back to ORIG_HEAD,
thus undoing all the changes from the failed merge.

When we are on an unborn branch, HEAD and ORIG_HEAD will not point to
valid trees. In this case, use an empty tree.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent f8da680
Raw File
t3500-cherry.sh 
#!/bin/sh
#
# Copyright (c) 2006 Yann Dirson, based on t3400 by Amos Waterland
#

test_description='git cherry should detect patches integrated upstream

This test cherry-picks one local change of two into master branch, and
checks that git cherry only returns the second patch in the local branch
'
. ./test-lib.sh

GIT_AUTHOR_EMAIL=bogus_email_address
export GIT_AUTHOR_EMAIL

test_expect_success \
    'prepare repository with topic branch, and check cherry finds the 2 patches from there' \
    'echo First > A &&
     git update-index --add A &&
     test_tick &&
     git commit -m "Add A." &&

     git checkout -b my-topic-branch &&

     echo Second > B &&
     git update-index --add B &&
     test_tick &&
     git commit -m "Add B." &&

     echo AnotherSecond > C &&
     git update-index --add C &&
     test_tick &&
     git commit -m "Add C." &&

     git checkout -f master &&
     rm -f B C &&

     echo Third >> A &&
     git update-index A &&
     test_tick &&
     git commit -m "Modify A." &&

     expr "$(echo $(git cherry master my-topic-branch) )" : "+ [^ ]* + .*"
'

test_expect_success \
    'check that cherry with limit returns only the top patch'\
    'expr "$(echo $(git cherry master my-topic-branch my-topic-branch^1) )" : "+ [^ ]*"
'

test_expect_success \
    'cherry-pick one of the 2 patches, and check cherry recognized one and only one as new' \
    'git cherry-pick my-topic-branch^0 &&
     echo $(git cherry master my-topic-branch) &&
     expr "$(echo $(git cherry master my-topic-branch) )" : "+ [^ ]* - .*"
'

test_done
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