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https://github.com/martinvonz/jj.git
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70b99c960e
I've wanted the API to look like this for a while. It seems like a good API to me. It means that the caller won't have to reload the repo after committing. The cost seems relatively small. It involves copying potentially a lot of data in memory (at least the View object), but it shouldn't involve reading from disk or any other processing. To reduce the amount of data to copy, it may be worth switching to persistent data types. I've also wanted to do that for the copying we do when start a transaction. I couldn't measure any slowdown caused by this change.
56 lines
2.2 KiB
Rust
56 lines
2.2 KiB
Rust
// Copyright 2021 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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use jujube_lib::repo::{ReadonlyRepo, RepoLoadError, RepoLoader};
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use jujube_lib::testutils;
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use test_case::test_case;
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#[test]
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fn test_load_bad_path() {
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let settings = testutils::user_settings();
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let temp_dir = tempfile::tempdir().unwrap();
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let wc_path = temp_dir.path().to_owned();
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// We haven't created a repo in the wc_path, so it should fail to load.
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let result = ReadonlyRepo::load(&settings, wc_path.clone());
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assert_eq!(result.err(), Some(RepoLoadError::NoRepoHere(wc_path)));
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}
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#[test_case(false ; "local store")]
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#[test_case(true ; "git store")]
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fn test_load_at_operation(use_git: bool) {
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let settings = testutils::user_settings();
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let (_temp_dir, mut repo) = testutils::init_repo(&settings, use_git);
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let mut tx = repo.start_transaction("add commit");
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let commit = testutils::create_random_commit(&settings, &repo).write_to_repo(tx.mut_repo());
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let op = tx.commit().operation().clone();
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repo = repo.reload().unwrap();
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let mut tx = repo.start_transaction("remove commit");
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tx.mut_repo().remove_head(&commit);
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tx.commit();
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// If we load the repo at head, we should not see the commit since it was
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// removed
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let loader = RepoLoader::init(&settings, repo.working_copy_path().clone()).unwrap();
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let head_repo = loader.load_at_head().unwrap();
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assert!(!head_repo.view().heads().contains(commit.id()));
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// If we load the repo at the previous operation, we should see the commit since
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// it has not been removed yet
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let loader = RepoLoader::init(&settings, repo.working_copy_path().clone()).unwrap();
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let old_repo = loader.load_at(&op).unwrap();
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assert!(old_repo.view().heads().contains(commit.id()));
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}
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