merge(third_party/git): Merge squashed git subtree at v2.23.0 r/373

Merge commit '1b593e1ea4d2af0f6444d9a7788d5d99abd6fde5' as 'third_party/git'

1 files changed, 298 insertions, 0 deletions

diff --git a/third_party/git/t/t7504-commit-msg-hook.sh b/third_party/git/t/t7504-commit-msg-hook.sh
new file mode 100755
index 000000000000..31b9c6a2c1d3
--- /dev/null
+++ b/third_party/git/t/t7504-commit-msg-hook.sh
@@ -0,0 +1,298 @@
+#!/bin/sh
+
+test_description='commit-msg hook'
+
+. ./test-lib.sh
+
+test_expect_success 'with no hook' '
+
+	echo "foo" > file &&
+	git add file &&
+	git commit -m "first"
+
+'
+
+# set up fake editor for interactive editing
+cat > fake-editor <<'EOF'
+#!/bin/sh
+cp FAKE_MSG "$1"
+exit 0
+EOF
+chmod +x fake-editor
+
+## Not using test_set_editor here so we can easily ensure the editor variable
+## is only set for the editor tests
+FAKE_EDITOR="$(pwd)/fake-editor"
+export FAKE_EDITOR
+
+test_expect_success 'with no hook (editor)' '
+
+	echo "more foo" >> file &&
+	git add file &&
+	echo "more foo" > FAKE_MSG &&
+	GIT_EDITOR="\"\$FAKE_EDITOR\"" git commit
+
+'
+
+test_expect_success '--no-verify with no hook' '
+
+	echo "bar" > file &&
+	git add file &&
+	git commit --no-verify -m "bar"
+
+'
+
+test_expect_success '--no-verify with no hook (editor)' '
+
+	echo "more bar" > file &&
+	git add file &&
+	echo "more bar" > FAKE_MSG &&
+	GIT_EDITOR="\"\$FAKE_EDITOR\"" git commit --no-verify
+
+'
+
+# now install hook that always succeeds
+HOOKDIR="$(git rev-parse --git-dir)/hooks"
+HOOK="$HOOKDIR/commit-msg"
+mkdir -p "$HOOKDIR"
+cat > "$HOOK" <<EOF
+#!/bin/sh
+exit 0
+EOF
+chmod +x "$HOOK"
+
+test_expect_success 'with succeeding hook' '
+
+	echo "more" >> file &&
+	git add file &&
+	git commit -m "more"
+
+'
+
+test_expect_success 'with succeeding hook (editor)' '
+
+	echo "more more" >> file &&
+	git add file &&
+	echo "more more" > FAKE_MSG &&
+	GIT_EDITOR="\"\$FAKE_EDITOR\"" git commit
+
+'
+
+test_expect_success '--no-verify with succeeding hook' '
+
+	echo "even more" >> file &&
+	git add file &&
+	git commit --no-verify -m "even more"
+
+'
+
+test_expect_success '--no-verify with succeeding hook (editor)' '
+
+	echo "even more more" >> file &&
+	git add file &&
+	echo "even more more" > FAKE_MSG &&
+	GIT_EDITOR="\"\$FAKE_EDITOR\"" git commit --no-verify
+
+'
+
+# now a hook that fails
+cat > "$HOOK" <<EOF
+#!/bin/sh
+exit 1
+EOF
+
+commit_msg_is () {
+	test "$(git log --pretty=format:%s%b -1)" = "$1"
+}
+
+test_expect_success 'with failing hook' '
+
+	echo "another" >> file &&
+	git add file &&
+	test_must_fail git commit -m "another"
+
+'
+
+test_expect_success 'with failing hook (editor)' '
+
+	echo "more another" >> file &&
+	git add file &&
+	echo "more another" > FAKE_MSG &&
+	! (GIT_EDITOR="\"\$FAKE_EDITOR\"" git commit)
+
+'
+
+test_expect_success '--no-verify with failing hook' '
+
+	echo "stuff" >> file &&
+	git add file &&
+	git commit --no-verify -m "stuff"
+
+'
+
+test_expect_success '--no-verify with failing hook (editor)' '
+
+	echo "more stuff" >> file &&
+	git add file &&
+	echo "more stuff" > FAKE_MSG &&
+	GIT_EDITOR="\"\$FAKE_EDITOR\"" git commit --no-verify
+
+'
+
+test_expect_success 'merge fails with failing hook' '
+
+	test_when_finished "git branch -D newbranch" &&
+	test_when_finished "git checkout -f master" &&
+	git checkout --orphan newbranch &&
+	: >file2 &&
+	git add file2 &&
+	git commit --no-verify file2 -m in-side-branch &&
+	test_must_fail git merge --allow-unrelated-histories master &&
+	commit_msg_is "in-side-branch" # HEAD before merge
+
+'
+
+test_expect_success 'merge bypasses failing hook with --no-verify' '
+
+	test_when_finished "git branch -D newbranch" &&
+	test_when_finished "git checkout -f master" &&
+	git checkout --orphan newbranch &&
+	git rm -f file &&
+	: >file2 &&
+	git add file2 &&
+	git commit --no-verify file2 -m in-side-branch &&
+	git merge --no-verify --allow-unrelated-histories master &&
+	commit_msg_is "Merge branch '\''master'\'' into newbranch"
+'
+
+
+chmod -x "$HOOK"
+test_expect_success POSIXPERM 'with non-executable hook' '
+
+	echo "content" >file &&
+	git add file &&
+	git commit -m "content"
+
+'
+
+test_expect_success POSIXPERM 'with non-executable hook (editor)' '
+
+	echo "content again" >> file &&
+	git add file &&
+	echo "content again" > FAKE_MSG &&
+	GIT_EDITOR="\"\$FAKE_EDITOR\"" git commit -m "content again"
+
+'
+
+test_expect_success POSIXPERM '--no-verify with non-executable hook' '
+
+	echo "more content" >> file &&
+	git add file &&
+	git commit --no-verify -m "more content"
+
+'
+
+test_expect_success POSIXPERM '--no-verify with non-executable hook (editor)' '
+
+	echo "even more content" >> file &&
+	git add file &&
+	echo "even more content" > FAKE_MSG &&
+	GIT_EDITOR="\"\$FAKE_EDITOR\"" git commit --no-verify
+
+'
+
+# now a hook that edits the commit message
+cat > "$HOOK" <<'EOF'
+#!/bin/sh
+echo "new message" > "$1"
+exit 0
+EOF
+chmod +x "$HOOK"
+
+test_expect_success 'hook edits commit message' '
+
+	echo "additional" >> file &&
+	git add file &&
+	git commit -m "additional" &&
+	commit_msg_is "new message"
+
+'
+
+test_expect_success 'hook edits commit message (editor)' '
+
+	echo "additional content" >> file &&
+	git add file &&
+	echo "additional content" > FAKE_MSG &&
+	GIT_EDITOR="\"\$FAKE_EDITOR\"" git commit &&
+	commit_msg_is "new message"
+
+'
+
+test_expect_success "hook doesn't edit commit message" '
+
+	echo "plus" >> file &&
+	git add file &&
+	git commit --no-verify -m "plus" &&
+	commit_msg_is "plus"
+
+'
+
+test_expect_success "hook doesn't edit commit message (editor)" '
+
+	echo "more plus" >> file &&
+	git add file &&
+	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 &&
+	git rm -f file &&
+	: >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`
+cat > reword-editor <<'EOF'
+#!/bin/sh
+mv "$1" "$1".bup &&
+sed 's/^pick/reword/' <"$1".bup >"$1"
+EOF
+chmod +x reword-editor
+REWORD_EDITOR="$(pwd)/reword-editor"
+export REWORD_EDITOR
+
+test_expect_success 'hook is called for reword during `rebase -i`' '
+
+	GIT_SEQUENCE_EDITOR="\"$REWORD_EDITOR\"" git rebase -i HEAD^ &&
+	commit_msg_is "new message"
+
+'
+
+
+test_done