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-rwxr-xr-xt/t7504-commit-msg-hook.sh308
1 files changed, 308 insertions, 0 deletions
diff --git a/t/t7504-commit-msg-hook.sh b/t/t7504-commit-msg-hook.sh
new file mode 100755
index 0000000..a39de8c
--- /dev/null
+++ b/t/t7504-commit-msg-hook.sh
@@ -0,0 +1,308 @@
+#!/bin/sh
+
+test_description='commit-msg hook'
+
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
+. ./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
+
+'
+
+test_expect_success 'setup: commit-msg hook that always succeeds' '
+ test_hook --setup commit-msg <<-\EOF
+ exit 0
+ EOF
+'
+
+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
+
+'
+
+test_expect_success 'setup: commit-msg hook that always fails' '
+ test_hook --clobber commit-msg <<-\EOF
+ exit 1
+ EOF
+'
+
+commit_msg_is () {
+ test "$(git log --pretty=format:%s%b -1)" = "$1"
+}
+
+test_expect_success 'with failing hook' '
+
+ echo "another" >> file &&
+ git add file &&
+ test_must_fail git commit -m "another"
+
+'
+
+test_expect_success 'with failing hook (editor)' '
+
+ echo "more another" >> file &&
+ git add file &&
+ echo "more another" > FAKE_MSG &&
+ ! (GIT_EDITOR="\"\$FAKE_EDITOR\"" git commit)
+
+'
+
+test_expect_success '--no-verify with failing hook' '
+
+ echo "stuff" >> file &&
+ git add file &&
+ git commit --no-verify -m "stuff"
+
+'
+
+test_expect_success '-n followed by --verify with failing hook' '
+
+ echo "even more" >> file &&
+ git add file &&
+ test_must_fail git commit -n --verify -m "even more"
+
+'
+
+test_expect_success '--no-verify with failing hook (editor)' '
+
+ echo "more stuff" >> file &&
+ git add file &&
+ echo "more stuff" > FAKE_MSG &&
+ GIT_EDITOR="\"\$FAKE_EDITOR\"" git commit --no-verify
+
+'
+
+test_expect_success 'merge fails with failing hook' '
+
+ test_when_finished "git branch -D newbranch" &&
+ test_when_finished "git checkout -f main" &&
+ git checkout --orphan newbranch &&
+ : >file2 &&
+ git add file2 &&
+ git commit --no-verify file2 -m in-side-branch &&
+ test_must_fail git merge --allow-unrelated-histories main &&
+ commit_msg_is "in-side-branch" # HEAD before merge
+
+'
+
+test_expect_success 'merge bypasses failing hook with --no-verify' '
+
+ test_when_finished "git branch -D newbranch" &&
+ test_when_finished "git checkout -f main" &&
+ git checkout --orphan newbranch &&
+ git rm -f file &&
+ : >file2 &&
+ git add file2 &&
+ git commit --no-verify file2 -m in-side-branch &&
+ git merge --no-verify --allow-unrelated-histories main &&
+ commit_msg_is "Merge branch '\''main'\'' into newbranch"
+'
+
+test_expect_success 'setup: commit-msg hook made non-executable' '
+ git_dir="$(git rev-parse --git-dir)" &&
+ chmod -x "$git_dir/hooks/commit-msg"
+'
+
+
+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
+
+'
+
+test_expect_success 'setup: commit-msg hook that edits the commit message' '
+ test_hook --clobber commit-msg <<-\EOF
+ echo "new message" >"$1"
+ exit 0
+ EOF
+'
+
+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 main" &&
+ 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 main &&
+ 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 main" &&
+ git checkout main &&
+ echo a >file2 &&
+ git add file2 &&
+ git commit --no-verify -m "add file2 to main" &&
+ git checkout -b newbranch main^ &&
+ echo b >file2 &&
+ git add file2 &&
+ git commit --no-verify file2 -m in-side-branch &&
+ git merge --no-verify -m not-rewritten-by-hook main &&
+ # 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