// Copyright 2021 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 jj_lib::repo::RepoLoader;use testutils::TestRepo;use testutils::write_random_commit; #[test]fn test_load_at_operation() {    let settings = testutils::user_settings();    let test_repo = TestRepo::init();    let repo = &test_repo.repo;     let mut tx = repo.start_transaction();    let commit = write_random_commit(tx.repo_mut());    let repo = tx.commit("add commit").unwrap();     let mut tx = repo.start_transaction();    tx.repo_mut().remove_head(commit.id());    tx.commit("remove commit").unwrap();     // If we load the repo at head, we should not see the commit since it was    // removed    let loader = RepoLoader::init_from_file_system(        &settings,        test_repo.repo_path(),        &test_repo.env.default_store_factories(),    )    .unwrap();    let head_repo = loader.load_at_head().unwrap();    assert!(!head_repo.view().heads().contains(commit.id()));     // If we load the repo at the previous operation, we should see the commit since    // it has not been removed yet    let loader = RepoLoader::init_from_file_system(        &settings,        test_repo.repo_path(),        &test_repo.env.default_store_factories(),    )    .unwrap();    let old_repo = loader.load_at(repo.operation()).unwrap();    assert!(old_repo.view().heads().contains(commit.id()));}