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When calling either the recursive or the ORT merge machineries we need to provide a list of merge bases. The ownership of that parameter is then implicitly transferred to the callee, which is somewhat fishy. Furthermore, that list may leak in some cases where the merge machinery runs into an error, thus causing a memory leak. Refactor the code such that we stop transferring ownership. Instead, the merge machinery will now create its own local copies of the passed in list as required if they need to modify the list. Free the list at the callsites as required. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
206 lines
5.8 KiB
Bash
Executable File
206 lines
5.8 KiB
Bash
Executable File
#!/bin/sh
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test_description='test aborting in-progress merges
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Set up repo with conflicting and non-conflicting branches:
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There are three files foo/bar/baz, and the following graph illustrates the
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content of these files in each commit:
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# foo/bar/baz --- foo/bar/bazz <-- main
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# \
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# --- foo/barf/bazf <-- conflict_branch
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# \
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# --- foo/bart/baz <-- clean_branch
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Next, test git merge --abort with the following variables:
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- before/after successful merge (should fail when not in merge context)
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- with/without conflicts
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- clean/dirty index before merge
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- clean/dirty worktree before merge
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- dirty index before merge matches contents on remote branch
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- changed/unchanged worktree after merge
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- changed/unchanged index after merge
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'
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GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
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export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
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TEST_PASSES_SANITIZE_LEAK=true
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. ./test-lib.sh
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test_expect_success 'setup' '
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# Create the above repo
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echo foo > foo &&
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echo bar > bar &&
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echo baz > baz &&
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git add foo bar baz &&
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git commit -m initial &&
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echo bazz > baz &&
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git commit -a -m "second" &&
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git checkout -b conflict_branch HEAD^ &&
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echo barf > bar &&
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echo bazf > baz &&
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git commit -a -m "conflict" &&
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git checkout -b clean_branch HEAD^ &&
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echo bart > bar &&
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git commit -a -m "clean" &&
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git checkout main
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'
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pre_merge_head="$(git rev-parse HEAD)"
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test_expect_success 'fails without MERGE_HEAD (unstarted merge)' '
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test_must_fail git merge --abort 2>output &&
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test_grep MERGE_HEAD output
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'
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test_expect_success 'fails without MERGE_HEAD (unstarted merge): .git/MERGE_HEAD sanity' '
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test ! -f .git/MERGE_HEAD &&
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test "$pre_merge_head" = "$(git rev-parse HEAD)"
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'
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test_expect_success 'fails without MERGE_HEAD (completed merge)' '
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git merge clean_branch &&
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test ! -f .git/MERGE_HEAD &&
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# Merge successfully completed
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post_merge_head="$(git rev-parse HEAD)" &&
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test_must_fail git merge --abort 2>output &&
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test_grep MERGE_HEAD output
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'
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test_expect_success 'fails without MERGE_HEAD (completed merge): .git/MERGE_HEAD sanity' '
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test ! -f .git/MERGE_HEAD &&
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test "$post_merge_head" = "$(git rev-parse HEAD)"
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'
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test_expect_success 'Forget previous merge' '
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git reset --hard "$pre_merge_head"
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'
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test_expect_success 'Abort after --no-commit' '
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# Redo merge, but stop before creating merge commit
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git merge --no-commit clean_branch &&
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test -f .git/MERGE_HEAD &&
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# Abort non-conflicting merge
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git merge --abort &&
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test ! -f .git/MERGE_HEAD &&
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test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
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test -z "$(git diff)" &&
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test -z "$(git diff --staged)"
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'
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test_expect_success 'Abort after conflicts' '
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# Create conflicting merge
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test_must_fail git merge conflict_branch &&
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test -f .git/MERGE_HEAD &&
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# Abort conflicting merge
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git merge --abort &&
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test ! -f .git/MERGE_HEAD &&
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test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
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test -z "$(git diff)" &&
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test -z "$(git diff --staged)"
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'
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test_expect_success 'Clean merge with dirty index fails' '
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echo xyzzy >> foo &&
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git add foo &&
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git diff --staged > expect &&
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test_must_fail git merge clean_branch &&
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test ! -f .git/MERGE_HEAD &&
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test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
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test -z "$(git diff)" &&
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git diff --staged > actual &&
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test_cmp expect actual
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'
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test_expect_success 'Conflicting merge with dirty index fails' '
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test_must_fail git merge conflict_branch &&
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test ! -f .git/MERGE_HEAD &&
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test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
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test -z "$(git diff)" &&
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git diff --staged > actual &&
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test_cmp expect actual
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'
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test_expect_success 'Reset index (but preserve worktree changes)' '
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git reset "$pre_merge_head" &&
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git diff > actual &&
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test_cmp expect actual
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'
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test_expect_success 'Abort clean merge with non-conflicting dirty worktree' '
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git merge --no-commit clean_branch &&
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test -f .git/MERGE_HEAD &&
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# Abort merge
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git merge --abort &&
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test ! -f .git/MERGE_HEAD &&
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test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
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test -z "$(git diff --staged)" &&
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git diff > actual &&
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test_cmp expect actual
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'
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test_expect_success 'Abort conflicting merge with non-conflicting dirty worktree' '
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test_must_fail git merge conflict_branch &&
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test -f .git/MERGE_HEAD &&
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# Abort merge
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git merge --abort &&
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test ! -f .git/MERGE_HEAD &&
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test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
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test -z "$(git diff --staged)" &&
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git diff > actual &&
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test_cmp expect actual
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'
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test_expect_success 'Reset worktree changes' '
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git reset --hard "$pre_merge_head"
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'
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test_expect_success 'Fail clean merge with conflicting dirty worktree' '
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echo xyzzy >> bar &&
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git diff > expect &&
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test_must_fail git merge --no-commit clean_branch &&
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test ! -f .git/MERGE_HEAD &&
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test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
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test -z "$(git diff --staged)" &&
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git diff > actual &&
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test_cmp expect actual
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'
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test_expect_success 'Fail conflicting merge with conflicting dirty worktree' '
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test_must_fail git merge conflict_branch &&
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test ! -f .git/MERGE_HEAD &&
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test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
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test -z "$(git diff --staged)" &&
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git diff > actual &&
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test_cmp expect actual
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'
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test_expect_success 'Reset worktree changes' '
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git reset --hard "$pre_merge_head"
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'
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test_expect_success 'Fail clean merge with matching dirty worktree' '
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echo bart > bar &&
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git diff > expect &&
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test_must_fail git merge --no-commit clean_branch &&
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test ! -f .git/MERGE_HEAD &&
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test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
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test -z "$(git diff --staged)" &&
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git diff > actual &&
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test_cmp expect actual
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'
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test_expect_success 'Fail conflicting merge with matching dirty worktree' '
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echo barf > bar &&
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git diff > expect &&
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test_must_fail git merge conflict_branch &&
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test ! -f .git/MERGE_HEAD &&
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test "$pre_merge_head" = "$(git rev-parse HEAD)" &&
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test -z "$(git diff --staged)" &&
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git diff > actual &&
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test_cmp expect actual
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'
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test_done
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