From f8b863598c991a5441d97e5dc59af8968ea37e37 Mon Sep 17 00:00:00 2001 From: Stefan Beller Date: Thu, 7 Sep 2017 15:04:29 -0700 Subject: builtin/merge: honor commit-msg hook for merges Similar to 65969d43d1 (merge: honor prepare-commit-msg hook, 2011-02-14) merge should also honor the commit-msg hook: When a merge is stopped due to conflicts or --no-commit, the subsequent commit calls the commit-msg hook. However, it is not called after a clean merge. Fix this inconsistency by invoking the hook after clean merges as well. This change is motivated by Gerrit's commit-msg hook to install a ChangeId trailer into the commit message. Without such a ChangeId, Gerrit refuses to accept any commit by default, such that the inconsistency of (not) running the commit-msg hook between commit and merge leads to confusion and might block people from getting their work done. As the githooks man page is very vocal about the possibility of skipping the commit-msg hook via the --no-verify option, implement the option in merge, too. 'git merge --continue' is currently implemented as calling cmd_commit with no further arguments. This works for most other merge related options, such as demonstrated via the --allow-unrelated-histories flag in the test. The --no-verify option however is not remembered across invocations of git-merge. Originally the author assumed an alternative in which the 'git merge --continue' command accepts the --no-verify flag, but that opens up the discussion which flags are allows to the continued merge command and which must be given in the first invocation. Signed-off-by: Stefan Beller Signed-off-by: Junio C Hamano --- t/t7504-commit-msg-hook.sh | 64 +++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 60 insertions(+), 4 deletions(-) (limited to 't/t7504-commit-msg-hook.sh') diff --git a/t/t7504-commit-msg-hook.sh b/t/t7504-commit-msg-hook.sh index 88d4cda299..302a3a2082 100755 --- a/t/t7504-commit-msg-hook.sh +++ b/t/t7504-commit-msg-hook.sh @@ -101,6 +101,10 @@ cat > "$HOOK" <> file && @@ -135,6 +139,32 @@ test_expect_success '--no-verify with failing hook (editor)' ' ' +test_expect_success 'merge fails with failing hook' ' + + test_when_finished "git branch -D newbranch" && + test_when_finished "git checkout -f master" && + git checkout --orphan newbranch && + : >file2 && + git add file2 && + git commit --no-verify file2 -m in-side-branch && + test_must_fail git merge --allow-unrelated-histories master && + commit_msg_is "in-side-branch" # HEAD before merge + +' + +test_expect_success 'merge bypasses failing hook with --no-verify' ' + + test_when_finished "git branch -D newbranch" && + test_when_finished "git checkout -f master" && + git checkout --orphan newbranch && + : >file2 && + git add file2 && + git commit --no-verify file2 -m in-side-branch && + git merge --no-verify --allow-unrelated-histories master && + commit_msg_is "Merge branch '\''master'\'' into newbranch" +' + + chmod -x "$HOOK" test_expect_success POSIXPERM 'with non-executable hook' ' @@ -178,10 +208,6 @@ exit 0 EOF chmod +x "$HOOK" -commit_msg_is () { - test "$(git log --pretty=format:%s%b -1)" = "$1" -} - test_expect_success 'hook edits commit message' ' echo "additional" >> file && @@ -217,7 +243,36 @@ test_expect_success "hook doesn't edit commit message (editor)" ' echo "more plus" > FAKE_MSG && GIT_EDITOR="\"\$FAKE_EDITOR\"" git commit --no-verify && commit_msg_is "more plus" +' +test_expect_success 'hook called in git-merge picks up commit message' ' + test_when_finished "git branch -D newbranch" && + test_when_finished "git checkout -f master" && + git checkout --orphan newbranch && + : >file2 && + git add file2 && + git commit --no-verify file2 -m in-side-branch && + git merge --allow-unrelated-histories master && + commit_msg_is "new message" +' + +test_expect_failure 'merge --continue remembers --no-verify' ' + test_when_finished "git branch -D newbranch" && + test_when_finished "git checkout -f master" && + git checkout master && + echo a >file2 && + git add file2 && + git commit --no-verify -m "add file2 to master" && + git checkout -b newbranch master^ && + echo b >file2 && + git add file2 && + git commit --no-verify file2 -m in-side-branch && + git merge --no-verify -m not-rewritten-by-hook master && + # resolve conflict: + echo c >file2 && + git add file2 && + git merge --continue && + commit_msg_is not-rewritten-by-hook ' # set up fake editor to replace `pick` by `reword` @@ -237,4 +292,5 @@ test_expect_success 'hook is called for reword during `rebase -i`' ' ' + test_done -- cgit v1.2.3