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When conflicts are encountered while reverting a commit, it can be handy to have the name of that commit easily available. For example, to produce a copy of the patch to refer to while resolving conflicts: $ git revert 2eceb2a8 error: could not revert 2eceb2a8... awesome, buggy feature $ git show -R REVERT_HEAD >the-patch $ edit $(git diff --name-only) Set a REVERT_HEAD pseudoref when "git revert" does not make a commit, for cases like this. This also makes it possible for scripts to distinguish between a revert that encountered conflicts and other sources of an unmerged index. After successfully committing, resetting with "git reset", or moving to another commit with "git checkout" or "git reset", the pseudoref is no longer useful, so remove it. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
329 lines
7.9 KiB
Bash
Executable file
329 lines
7.9 KiB
Bash
Executable file
#!/bin/sh
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test_description='test cherry-pick and revert with conflicts
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-
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+ picked: rewrites foo to c
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+ base: rewrites foo to b
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+ initial: writes foo as a, unrelated as unrelated
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'
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. ./test-lib.sh
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test_cmp_rev () {
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git rev-parse --verify "$1" >expect.rev &&
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git rev-parse --verify "$2" >actual.rev &&
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test_cmp expect.rev actual.rev
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}
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pristine_detach () {
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git checkout -f "$1^0" &&
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git read-tree -u --reset HEAD &&
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git clean -d -f -f -q -x
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}
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test_expect_success setup '
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echo unrelated >unrelated &&
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git add unrelated &&
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test_commit initial foo a &&
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test_commit base foo b &&
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test_commit picked foo c &&
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git config advice.detachedhead false
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'
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test_expect_success 'failed cherry-pick does not advance HEAD' '
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pristine_detach initial &&
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head=$(git rev-parse HEAD) &&
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test_must_fail git cherry-pick picked &&
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newhead=$(git rev-parse HEAD) &&
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test "$head" = "$newhead"
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'
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test_expect_success 'advice from failed cherry-pick' "
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pristine_detach initial &&
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picked=\$(git rev-parse --short picked) &&
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cat <<-EOF >expected &&
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error: could not apply \$picked... picked
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hint: after resolving the conflicts, mark the corrected paths
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hint: with 'git add <paths>' or 'git rm <paths>'
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hint: and commit the result with 'git commit'
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EOF
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test_must_fail git cherry-pick picked 2>actual &&
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test_i18ncmp expected actual
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"
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test_expect_success 'failed cherry-pick sets CHERRY_PICK_HEAD' '
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pristine_detach initial &&
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test_must_fail git cherry-pick picked &&
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test_cmp_rev picked CHERRY_PICK_HEAD
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'
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test_expect_success 'successful cherry-pick does not set CHERRY_PICK_HEAD' '
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pristine_detach initial &&
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git cherry-pick base &&
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test_must_fail git rev-parse --verify CHERRY_PICK_HEAD
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'
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test_expect_success 'cherry-pick --no-commit does not set CHERRY_PICK_HEAD' '
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pristine_detach initial &&
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git cherry-pick --no-commit base &&
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test_must_fail git rev-parse --verify CHERRY_PICK_HEAD
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'
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test_expect_success 'cherry-pick w/dirty tree does not set CHERRY_PICK_HEAD' '
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pristine_detach initial &&
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echo foo > foo &&
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test_must_fail git cherry-pick base &&
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test_must_fail git rev-parse --verify CHERRY_PICK_HEAD
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'
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test_expect_success \
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'cherry-pick --strategy=resolve w/dirty tree does not set CHERRY_PICK_HEAD' '
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pristine_detach initial &&
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echo foo > foo &&
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test_must_fail git cherry-pick --strategy=resolve base &&
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test_must_fail git rev-parse --verify CHERRY_PICK_HEAD
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'
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test_expect_success 'GIT_CHERRY_PICK_HELP suppresses CHERRY_PICK_HEAD' '
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pristine_detach initial &&
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(
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GIT_CHERRY_PICK_HELP="and then do something else" &&
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export GIT_CHERRY_PICK_HELP &&
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test_must_fail git cherry-pick picked
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) &&
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test_must_fail git rev-parse --verify CHERRY_PICK_HEAD
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'
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test_expect_success 'git reset clears CHERRY_PICK_HEAD' '
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pristine_detach initial &&
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test_must_fail git cherry-pick picked &&
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git reset &&
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test_must_fail git rev-parse --verify CHERRY_PICK_HEAD
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'
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test_expect_success 'failed commit does not clear CHERRY_PICK_HEAD' '
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pristine_detach initial &&
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test_must_fail git cherry-pick picked &&
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test_must_fail git commit &&
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test_cmp_rev picked CHERRY_PICK_HEAD
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'
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test_expect_success 'cancelled commit does not clear CHERRY_PICK_HEAD' '
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pristine_detach initial &&
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test_must_fail git cherry-pick picked &&
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echo resolved >foo &&
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git add foo &&
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git update-index --refresh -q &&
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test_must_fail git diff-index --exit-code HEAD &&
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(
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GIT_EDITOR=false &&
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export GIT_EDITOR &&
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test_must_fail git commit
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) &&
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test_cmp_rev picked CHERRY_PICK_HEAD
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'
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test_expect_success 'successful commit clears CHERRY_PICK_HEAD' '
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pristine_detach initial &&
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test_must_fail git cherry-pick picked &&
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echo resolved >foo &&
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git add foo &&
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git commit &&
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test_must_fail git rev-parse --verify CHERRY_PICK_HEAD
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'
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test_expect_success 'failed cherry-pick produces dirty index' '
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pristine_detach initial &&
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test_must_fail git cherry-pick picked &&
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test_must_fail git update-index --refresh -q &&
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test_must_fail git diff-index --exit-code HEAD
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'
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test_expect_success 'failed cherry-pick registers participants in index' '
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pristine_detach initial &&
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{
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git checkout base -- foo &&
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git ls-files --stage foo &&
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git checkout initial -- foo &&
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git ls-files --stage foo &&
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git checkout picked -- foo &&
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git ls-files --stage foo
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} > stages &&
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sed "
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1 s/ 0 / 1 /
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2 s/ 0 / 2 /
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3 s/ 0 / 3 /
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" < stages > expected &&
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git read-tree -u --reset HEAD &&
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test_must_fail git cherry-pick picked &&
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git ls-files --stage --unmerged > actual &&
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test_cmp expected actual
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'
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test_expect_success 'failed cherry-pick describes conflict in work tree' '
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pristine_detach initial &&
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cat <<-EOF > expected &&
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<<<<<<< HEAD
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a
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=======
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c
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>>>>>>> objid picked
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EOF
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test_must_fail git cherry-pick picked &&
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sed "s/[a-f0-9]*\.\.\./objid/" foo > actual &&
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test_cmp expected actual
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'
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test_expect_success 'diff3 -m style' '
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pristine_detach initial &&
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git config merge.conflictstyle diff3 &&
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cat <<-EOF > expected &&
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<<<<<<< HEAD
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a
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||||||| parent of objid picked
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b
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=======
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c
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>>>>>>> objid picked
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EOF
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test_must_fail git cherry-pick picked &&
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sed "s/[a-f0-9]*\.\.\./objid/" foo > actual &&
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test_cmp expected actual
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'
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test_expect_success 'revert also handles conflicts sanely' '
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git config --unset merge.conflictstyle &&
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pristine_detach initial &&
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cat <<-EOF > expected &&
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<<<<<<< HEAD
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a
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=======
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b
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>>>>>>> parent of objid picked
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EOF
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{
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git checkout picked -- foo &&
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git ls-files --stage foo &&
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git checkout initial -- foo &&
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git ls-files --stage foo &&
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git checkout base -- foo &&
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git ls-files --stage foo
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} > stages &&
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sed "
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1 s/ 0 / 1 /
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2 s/ 0 / 2 /
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3 s/ 0 / 3 /
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" < stages > expected-stages &&
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git read-tree -u --reset HEAD &&
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head=$(git rev-parse HEAD) &&
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test_must_fail git revert picked &&
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newhead=$(git rev-parse HEAD) &&
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git ls-files --stage --unmerged > actual-stages &&
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test "$head" = "$newhead" &&
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test_must_fail git update-index --refresh -q &&
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test_must_fail git diff-index --exit-code HEAD &&
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test_cmp expected-stages actual-stages &&
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sed "s/[a-f0-9]*\.\.\./objid/" foo > actual &&
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test_cmp expected actual
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'
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test_expect_success 'failed revert sets REVERT_HEAD' '
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pristine_detach initial &&
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test_must_fail git revert picked &&
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test_cmp_rev picked REVERT_HEAD
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'
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test_expect_success 'successful revert does not set REVERT_HEAD' '
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pristine_detach base &&
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git revert base &&
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test_must_fail git rev-parse --verify CHERRY_PICK_HEAD &&
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test_must_fail git rev-parse --verify REVERT_HEAD
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'
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test_expect_success 'revert --no-commit sets REVERT_HEAD' '
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pristine_detach base &&
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git revert --no-commit base &&
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test_must_fail git rev-parse --verify CHERRY_PICK_HEAD &&
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test_cmp_rev base REVERT_HEAD
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'
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test_expect_success 'revert w/dirty tree does not set REVERT_HEAD' '
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pristine_detach base &&
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echo foo > foo &&
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test_must_fail git revert base &&
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test_must_fail git rev-parse --verify CHERRY_PICK_HEAD &&
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test_must_fail git rev-parse --verify REVERT_HEAD
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'
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test_expect_success 'GIT_CHERRY_PICK_HELP does not suppress REVERT_HEAD' '
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pristine_detach initial &&
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(
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GIT_CHERRY_PICK_HELP="and then do something else" &&
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GIT_REVERT_HELP="and then do something else, again" &&
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export GIT_CHERRY_PICK_HELP GIT_REVERT_HELP &&
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test_must_fail git revert picked
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) &&
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test_must_fail git rev-parse --verify CHERRY_PICK_HEAD &&
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test_cmp_rev picked REVERT_HEAD
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'
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test_expect_success 'git reset clears REVERT_HEAD' '
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pristine_detach initial &&
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test_must_fail git revert picked &&
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git reset &&
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test_must_fail git rev-parse --verify REVERT_HEAD
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'
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test_expect_success 'failed commit does not clear REVERT_HEAD' '
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pristine_detach initial &&
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test_must_fail git revert picked &&
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test_must_fail git commit &&
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test_cmp_rev picked REVERT_HEAD
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'
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test_expect_success 'revert conflict, diff3 -m style' '
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pristine_detach initial &&
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git config merge.conflictstyle diff3 &&
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cat <<-EOF > expected &&
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<<<<<<< HEAD
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a
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||||||| objid picked
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c
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=======
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b
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>>>>>>> parent of objid picked
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EOF
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test_must_fail git revert picked &&
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sed "s/[a-f0-9]*\.\.\./objid/" foo > actual &&
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test_cmp expected actual
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'
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test_done
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