// Copyright 2024 The Jujutsu Authors//// Licensed under the Apache License, Version 2.0 (the "License");// you may not use this file except in compliance with the License.// You may obtain a copy of the License at//// https://www.apache.org/licenses/LICENSE-2.0//// Unless required by applicable law or agreed to in writing, software// distributed under the License is distributed on an "AS IS" BASIS,// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.// See the License for the specific language governing permissions and// limitations under the License. use std::path::Path; use test_case::test_case;use testutils::{TestRepoBackend, TestWorkspace}; use crate::common::TestEnvironment; #[test_case(TestRepoBackend::Local ; "local backend")]#[test_case(TestRepoBackend::Git ; "git backend")]fn test_root(backend: TestRepoBackend) {    let test_env = TestEnvironment::default();    let settings = testutils::user_settings();    let test_workspace = TestWorkspace::init_with_backend(&settings, backend);    let root = test_workspace.workspace.workspace_root();    let subdir = root.join("subdir");    std::fs::create_dir(&subdir).unwrap();    let stdout = test_env.jj_cmd_success(&subdir, &["root"]);    assert_eq!(&stdout, &[root.to_str().unwrap(), "\n"].concat());} #[test]fn test_root_outside_a_repo() {    let test_env = TestEnvironment::default();    let stdout = test_env.jj_cmd_failure(Path::new("/"), &["root"]);    insta::assert_snapshot!(stdout, @r###"    Error: There is no jj repo in "."    "###);}