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Diffstat (limited to 't/t7611-merge-abort.sh')
| -rwxr-xr-x | t/t7611-merge-abort.sh | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/t/t7611-merge-abort.sh b/t/t7611-merge-abort.sh new file mode 100755 index 0000000..d6975ca --- /dev/null +++ b/t/t7611-merge-abort.sh @@ -0,0 +1,204 @@ +#!/bin/sh + +test_description='test aborting in-progress merges + +Set up repo with conflicting and non-conflicting branches: + +There are three files foo/bar/baz, and the following graph illustrates the +content of these files in each commit: + +# foo/bar/baz --- foo/bar/bazz <-- main +# \ +# --- foo/barf/bazf <-- conflict_branch +# \ +# --- foo/bart/baz <-- clean_branch + +Next, test git merge --abort with the following variables: +- before/after successful merge (should fail when not in merge context) +- with/without conflicts +- clean/dirty index before merge +- clean/dirty worktree before merge +- dirty index before merge matches contents on remote branch +- changed/unchanged worktree after merge +- changed/unchanged index after merge +' +GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main +export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME + +. ./test-lib.sh + +test_expect_success 'setup' ' + # Create the above repo + echo foo > foo && + echo bar > bar && + echo baz > baz && + git add foo bar baz && + git commit -m initial && + echo bazz > baz && + git commit -a -m "second" && + git checkout -b conflict_branch HEAD^ && + echo barf > bar && + echo bazf > baz && + git commit -a -m "conflict" && + git checkout -b clean_branch HEAD^ && + echo bart > bar && + git commit -a -m "clean" && + git checkout main +' + +pre_merge_head="$(git rev-parse HEAD)" + +test_expect_success 'fails without MERGE_HEAD (unstarted merge)' ' + test_must_fail git merge --abort 2>output && + test_grep MERGE_HEAD output +' + +test_expect_success 'fails without MERGE_HEAD (unstarted merge): .git/MERGE_HEAD sanity' ' + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" +' + +test_expect_success 'fails without MERGE_HEAD (completed merge)' ' + git merge clean_branch && + test ! -f .git/MERGE_HEAD && + # Merge successfully completed + post_merge_head="$(git rev-parse HEAD)" && + test_must_fail git merge --abort 2>output && + test_grep MERGE_HEAD output +' + +test_expect_success 'fails without MERGE_HEAD (completed merge): .git/MERGE_HEAD sanity' ' + test ! -f .git/MERGE_HEAD && + test "$post_merge_head" = "$(git rev-parse HEAD)" +' + +test_expect_success 'Forget previous merge' ' + git reset --hard "$pre_merge_head" +' + +test_expect_success 'Abort after --no-commit' ' + # Redo merge, but stop before creating merge commit + git merge --no-commit clean_branch && + test -f .git/MERGE_HEAD && + # Abort non-conflicting merge + git merge --abort && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff)" && + test -z "$(git diff --staged)" +' + +test_expect_success 'Abort after conflicts' ' + # Create conflicting merge + test_must_fail git merge conflict_branch && + test -f .git/MERGE_HEAD && + # Abort conflicting merge + git merge --abort && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff)" && + test -z "$(git diff --staged)" +' + +test_expect_success 'Clean merge with dirty index fails' ' + echo xyzzy >> foo && + git add foo && + git diff --staged > expect && + test_must_fail git merge clean_branch && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff)" && + git diff --staged > actual && + test_cmp expect actual +' + +test_expect_success 'Conflicting merge with dirty index fails' ' + test_must_fail git merge conflict_branch && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff)" && + git diff --staged > actual && + test_cmp expect actual +' + +test_expect_success 'Reset index (but preserve worktree changes)' ' + git reset "$pre_merge_head" && + git diff > actual && + test_cmp expect actual +' + +test_expect_success 'Abort clean merge with non-conflicting dirty worktree' ' + git merge --no-commit clean_branch && + test -f .git/MERGE_HEAD && + # Abort merge + git merge --abort && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff --staged)" && + git diff > actual && + test_cmp expect actual +' + +test_expect_success 'Abort conflicting merge with non-conflicting dirty worktree' ' + test_must_fail git merge conflict_branch && + test -f .git/MERGE_HEAD && + # Abort merge + git merge --abort && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff --staged)" && + git diff > actual && + test_cmp expect actual +' + +test_expect_success 'Reset worktree changes' ' + git reset --hard "$pre_merge_head" +' + +test_expect_success 'Fail clean merge with conflicting dirty worktree' ' + echo xyzzy >> bar && + git diff > expect && + test_must_fail git merge --no-commit clean_branch && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff --staged)" && + git diff > actual && + test_cmp expect actual +' + +test_expect_success 'Fail conflicting merge with conflicting dirty worktree' ' + test_must_fail git merge conflict_branch && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff --staged)" && + git diff > actual && + test_cmp expect actual +' + +test_expect_success 'Reset worktree changes' ' + git reset --hard "$pre_merge_head" +' + +test_expect_success 'Fail clean merge with matching dirty worktree' ' + echo bart > bar && + git diff > expect && + test_must_fail git merge --no-commit clean_branch && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff --staged)" && + git diff > actual && + test_cmp expect actual +' + +test_expect_success 'Fail conflicting merge with matching dirty worktree' ' + echo barf > bar && + git diff > expect && + test_must_fail git merge conflict_branch && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff --staged)" && + git diff > actual && + test_cmp expect actual +' + +test_done |