forked from mirrors/jj
25d19e8a65
This patch changes the interface for making changes to the working copy by replacing `write_tree()` and `untrack()` by a single `start_mutation()` method. The two functions now live on the returned `LockedWorkingCopy` object instead. That is more flexible because the caller can make multiple changes while the working copy is locked. It also helps us reduce the risk of buggy callers that read the commit ID before taking the lock, because we can now make it accessible only on `LockedWorkingCopy`.
608 lines
23 KiB
Rust
608 lines
23 KiB
Rust
// Copyright 2020 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 std::collections::HashSet;
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use std::fs::{File, OpenOptions};
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use std::io::{Read, Write};
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#[cfg(unix)]
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use std::os::unix::fs::PermissionsExt;
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use std::sync::Arc;
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use itertools::Itertools;
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use jujutsu_lib::backend::{Conflict, ConflictPart, TreeValue};
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use jujutsu_lib::commit_builder::CommitBuilder;
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use jujutsu_lib::matchers::FilesMatcher;
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use jujutsu_lib::repo::ReadonlyRepo;
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use jujutsu_lib::repo_path::{RepoPath, RepoPathComponent};
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use jujutsu_lib::settings::UserSettings;
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use jujutsu_lib::testutils;
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use jujutsu_lib::tree_builder::TreeBuilder;
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use test_case::test_case;
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#[test_case(false ; "local backend")]
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#[test_case(true ; "git backend")]
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fn test_root(use_git: bool) {
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// Test that the working copy is clean and empty after init.
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let settings = testutils::user_settings();
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let mut test_workspace = testutils::init_repo(&settings, use_git);
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let repo = &test_workspace.repo;
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let wc = test_workspace.workspace.working_copy_mut();
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let mut locked_wc = wc.start_mutation();
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let new_tree_id = locked_wc.write_tree();
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locked_wc.discard();
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let checkout_commit = repo.store().get_commit(repo.view().checkout()).unwrap();
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assert_eq!(&new_tree_id, checkout_commit.tree().id());
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assert_eq!(&new_tree_id, repo.store().empty_tree_id());
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}
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#[test_case(false ; "local backend")]
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#[test_case(true ; "git backend")]
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fn test_checkout_file_transitions(use_git: bool) {
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// Tests switching between commits where a certain path is of one type in one
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// commit and another type in the other. Includes a "missing" type, so we cover
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// additions and removals as well.
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let settings = testutils::user_settings();
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let mut test_workspace = testutils::init_repo(&settings, use_git);
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let repo = &test_workspace.repo;
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let store = repo.store().clone();
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let workspace_root = test_workspace.workspace.workspace_root().clone();
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#[derive(Debug, Clone, Copy)]
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enum Kind {
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Missing,
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Normal,
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Executable,
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Conflict,
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#[cfg_attr(windows, allow(dead_code))]
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Symlink,
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Tree,
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GitSubmodule,
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}
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fn write_path(
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settings: &UserSettings,
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repo: &Arc<ReadonlyRepo>,
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tree_builder: &mut TreeBuilder,
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kind: Kind,
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path: &str,
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) {
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let store = repo.store();
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let value = match kind {
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Kind::Missing => {
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return;
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}
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Kind::Normal => {
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let id = testutils::write_file(
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store,
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&RepoPath::from_internal_string(path),
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"normal file contents",
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);
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TreeValue::Normal {
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id,
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executable: false,
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}
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}
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Kind::Executable => {
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let id = testutils::write_file(
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store,
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&RepoPath::from_internal_string(path),
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"executable file contents",
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);
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TreeValue::Normal {
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id,
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executable: true,
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}
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}
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Kind::Conflict => {
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let base_file_id = testutils::write_file(
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store,
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&RepoPath::from_internal_string(path),
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"base file contents",
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);
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let left_file_id = testutils::write_file(
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store,
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&RepoPath::from_internal_string(path),
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"left file contents",
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);
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let right_file_id = testutils::write_file(
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store,
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&RepoPath::from_internal_string(path),
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"right file contents",
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);
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let conflict = Conflict {
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removes: vec![ConflictPart {
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value: TreeValue::Normal {
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id: base_file_id,
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executable: false,
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},
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}],
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adds: vec![
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ConflictPart {
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value: TreeValue::Normal {
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id: left_file_id,
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executable: false,
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},
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},
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ConflictPart {
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value: TreeValue::Normal {
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id: right_file_id,
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executable: false,
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},
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},
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],
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};
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let conflict_id = store.write_conflict(&conflict).unwrap();
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TreeValue::Conflict(conflict_id)
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}
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Kind::Symlink => {
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let id = store
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.write_symlink(&RepoPath::from_internal_string(path), "target")
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.unwrap();
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TreeValue::Symlink(id)
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}
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Kind::Tree => {
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let mut sub_tree_builder = store.tree_builder(store.empty_tree_id().clone());
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let file_path = path.to_owned() + "/file";
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write_path(
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settings,
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repo,
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&mut sub_tree_builder,
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Kind::Normal,
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&file_path,
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);
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let id = sub_tree_builder.write_tree();
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TreeValue::Tree(id)
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}
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Kind::GitSubmodule => {
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let mut tx = repo.start_transaction("test");
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let id = testutils::create_random_commit(settings, repo)
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.write_to_repo(tx.mut_repo())
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.id()
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.clone();
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tx.commit();
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TreeValue::GitSubmodule(id)
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}
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};
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tree_builder.set(RepoPath::from_internal_string(path), value);
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}
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let mut kinds = vec![
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Kind::Missing,
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Kind::Normal,
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Kind::Executable,
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Kind::Conflict,
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Kind::Tree,
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];
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#[cfg(unix)]
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kinds.push(Kind::Symlink);
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if use_git {
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kinds.push(Kind::GitSubmodule);
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}
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let mut left_tree_builder = store.tree_builder(store.empty_tree_id().clone());
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let mut right_tree_builder = store.tree_builder(store.empty_tree_id().clone());
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let mut files = vec![];
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for left_kind in &kinds {
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for right_kind in &kinds {
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let path = format!("{:?}_{:?}", left_kind, right_kind);
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write_path(&settings, repo, &mut left_tree_builder, *left_kind, &path);
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write_path(&settings, repo, &mut right_tree_builder, *right_kind, &path);
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files.push((*left_kind, *right_kind, path));
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}
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}
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let left_tree_id = left_tree_builder.write_tree();
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let right_tree_id = right_tree_builder.write_tree();
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let mut tx = repo.start_transaction("test");
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let left_commit = CommitBuilder::for_new_commit(&settings, repo.store(), left_tree_id)
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.set_parents(vec![store.root_commit_id().clone()])
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.set_open(true)
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.write_to_repo(tx.mut_repo());
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let right_commit = CommitBuilder::for_new_commit(&settings, repo.store(), right_tree_id)
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.set_parents(vec![store.root_commit_id().clone()])
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.set_open(true)
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.write_to_repo(tx.mut_repo());
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tx.commit();
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let wc = test_workspace.workspace.working_copy_mut();
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wc.check_out(left_commit).unwrap();
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wc.check_out(right_commit.clone()).unwrap();
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// Check that the working copy is clean.
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let mut locked_wc = wc.start_mutation();
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let new_tree_id = locked_wc.write_tree();
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locked_wc.discard();
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assert_eq!(&new_tree_id, right_commit.tree().id());
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for (_left_kind, right_kind, path) in &files {
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let wc_path = workspace_root.join(path);
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let maybe_metadata = wc_path.symlink_metadata();
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match right_kind {
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Kind::Missing => {
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assert!(maybe_metadata.is_err(), "{:?} should not exist", path);
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}
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Kind::Normal => {
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assert!(maybe_metadata.is_ok(), "{:?} should exist", path);
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let metadata = maybe_metadata.unwrap();
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assert!(metadata.is_file(), "{:?} should be a file", path);
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#[cfg(unix)]
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assert_eq!(
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metadata.permissions().mode() & 0o111,
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0,
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"{:?} should not be executable",
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path
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);
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}
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Kind::Executable => {
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assert!(maybe_metadata.is_ok(), "{:?} should exist", path);
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let metadata = maybe_metadata.unwrap();
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assert!(metadata.is_file(), "{:?} should be a file", path);
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#[cfg(unix)]
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assert_ne!(
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metadata.permissions().mode() & 0o111,
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0,
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"{:?} should be executable",
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path
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);
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}
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Kind::Conflict => {
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assert!(maybe_metadata.is_ok(), "{:?} should exist", path);
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let metadata = maybe_metadata.unwrap();
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assert!(metadata.is_file(), "{:?} should be a file", path);
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#[cfg(unix)]
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assert_eq!(
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metadata.permissions().mode() & 0o111,
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0,
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"{:?} should not be executable",
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path
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);
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}
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Kind::Symlink => {
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assert!(maybe_metadata.is_ok(), "{:?} should exist", path);
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let metadata = maybe_metadata.unwrap();
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assert!(
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metadata.file_type().is_symlink(),
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"{:?} should be a symlink",
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path
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);
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}
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Kind::Tree => {
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assert!(maybe_metadata.is_ok(), "{:?} should exist", path);
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let metadata = maybe_metadata.unwrap();
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assert!(metadata.is_dir(), "{:?} should be a directory", path);
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}
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Kind::GitSubmodule => {
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// Not supported for now
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assert!(maybe_metadata.is_err(), "{:?} should not exist", path);
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}
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};
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}
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}
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#[test]
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fn test_untrack() {
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let settings = testutils::user_settings();
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let mut test_workspace = testutils::init_repo(&settings, false);
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let repo = &test_workspace.repo;
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let workspace_root = test_workspace.workspace.workspace_root().clone();
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let wanted_path = RepoPath::from_internal_string("wanted");
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let unwanted_path = RepoPath::from_internal_string("unwanted");
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let gitignore_path = RepoPath::from_internal_string(".gitignore");
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// First create a commit where one of the files is unwanted.
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let initial_tree = testutils::create_tree(
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repo,
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&[
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(&wanted_path, "code"),
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(&unwanted_path, "garbage"),
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(&gitignore_path, "unwanted\n"),
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],
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);
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let mut tx = repo.start_transaction("test");
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let initial_commit = CommitBuilder::for_open_commit(
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&settings,
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repo.store(),
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repo.store().root_commit_id().clone(),
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initial_tree.id().clone(),
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)
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.write_to_repo(tx.mut_repo());
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let repo = tx.commit();
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let wc = test_workspace.workspace.working_copy_mut();
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wc.check_out(initial_commit.clone()).unwrap();
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// Now we untrack the file called "unwanted"
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let mut tx = repo.start_transaction("test");
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let matcher = FilesMatcher::new(HashSet::from([unwanted_path.clone()]));
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let mut locked_wc = wc.start_mutation();
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let new_tree_id = locked_wc.untrack(&matcher).unwrap();
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let new_commit = CommitBuilder::for_rewrite_from(&settings, repo.store(), &initial_commit)
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.set_tree(new_tree_id)
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.write_to_repo(tx.mut_repo());
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locked_wc.finish(new_commit.id().clone());
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tx.commit();
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// The file should still exist in the working copy.
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assert!(unwanted_path.to_fs_path(&workspace_root).is_file());
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// It should not be in the new tree.
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let tracked_paths = new_commit
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.tree()
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.entries()
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.map(|(path, _)| path)
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.collect_vec();
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assert_eq!(tracked_paths, vec![gitignore_path, wanted_path]);
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// It should not get re-added if we write a new tree since we also added it
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// to the .gitignore file.
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let mut locked_wc = wc.start_mutation();
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let new_tree_id = locked_wc.write_tree();
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assert_eq!(new_tree_id, *new_commit.tree().id());
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locked_wc.discard();
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}
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#[test_case(false ; "local backend")]
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#[test_case(true ; "git backend")]
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fn test_commit_racy_timestamps(use_git: bool) {
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// Tests that file modifications are detected even if they happen the same
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// millisecond as the updated working copy state.
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let _home_dir = testutils::new_user_home();
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let settings = testutils::user_settings();
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let mut test_workspace = testutils::init_repo(&settings, use_git);
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let repo = &test_workspace.repo;
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let workspace_root = test_workspace.workspace.workspace_root().clone();
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let file_path = workspace_root.join("file");
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let mut previous_tree_id = repo.store().empty_tree_id().clone();
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let wc = test_workspace.workspace.working_copy_mut();
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for i in 0..100 {
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{
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let mut file = OpenOptions::new()
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.create(true)
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.write(true)
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.open(&file_path)
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.unwrap();
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file.write_all(format!("contents {}", i).as_bytes())
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.unwrap();
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}
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let mut locked_wc = wc.start_mutation();
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let new_tree_id = locked_wc.write_tree();
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locked_wc.discard();
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assert_ne!(new_tree_id, previous_tree_id);
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previous_tree_id = new_tree_id;
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}
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}
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#[test_case(false ; "local backend")]
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#[test_case(true ; "git backend")]
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fn test_gitignores(use_git: bool) {
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// Tests that .gitignore files are respected.
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let _home_dir = testutils::new_user_home();
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let settings = testutils::user_settings();
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let mut test_workspace = testutils::init_repo(&settings, use_git);
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let repo = &test_workspace.repo;
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let workspace_root = test_workspace.workspace.workspace_root().clone();
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let gitignore_path = RepoPath::from_internal_string(".gitignore");
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let added_path = RepoPath::from_internal_string("added");
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let modified_path = RepoPath::from_internal_string("modified");
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let removed_path = RepoPath::from_internal_string("removed");
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let ignored_path = RepoPath::from_internal_string("ignored");
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let subdir_modified_path = RepoPath::from_internal_string("dir/modified");
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let subdir_ignored_path = RepoPath::from_internal_string("dir/ignored");
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testutils::write_working_copy_file(&workspace_root, &gitignore_path, "ignored\n");
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testutils::write_working_copy_file(&workspace_root, &modified_path, "1");
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testutils::write_working_copy_file(&workspace_root, &removed_path, "1");
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std::fs::create_dir(workspace_root.join("dir")).unwrap();
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testutils::write_working_copy_file(&workspace_root, &subdir_modified_path, "1");
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let wc = test_workspace.workspace.working_copy_mut();
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let mut locked_wc = wc.start_mutation();
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let new_tree_id1 = locked_wc.write_tree();
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locked_wc.discard();
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let tree1 = repo
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.store()
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.get_tree(&RepoPath::root(), &new_tree_id1)
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.unwrap();
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let files1 = tree1.entries().map(|(name, _value)| name).collect_vec();
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assert_eq!(
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files1,
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vec![
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gitignore_path.clone(),
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subdir_modified_path.clone(),
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modified_path.clone(),
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removed_path.clone(),
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]
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);
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testutils::write_working_copy_file(
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&workspace_root,
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&gitignore_path,
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"ignored\nmodified\nremoved\n",
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);
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testutils::write_working_copy_file(&workspace_root, &added_path, "2");
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testutils::write_working_copy_file(&workspace_root, &modified_path, "2");
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std::fs::remove_file(removed_path.to_fs_path(&workspace_root)).unwrap();
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testutils::write_working_copy_file(&workspace_root, &ignored_path, "2");
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testutils::write_working_copy_file(&workspace_root, &subdir_modified_path, "2");
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testutils::write_working_copy_file(&workspace_root, &subdir_ignored_path, "2");
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let mut locked_wc = wc.start_mutation();
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let new_tree_id2 = locked_wc.write_tree();
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locked_wc.discard();
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let tree2 = repo
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.store()
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.get_tree(&RepoPath::root(), &new_tree_id2)
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.unwrap();
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let files2 = tree2.entries().map(|(name, _value)| name).collect_vec();
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assert_eq!(
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files2,
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vec![
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gitignore_path,
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added_path,
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subdir_modified_path,
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modified_path,
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]
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);
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}
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#[test_case(false ; "local backend")]
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#[test_case(true ; "git backend")]
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fn test_gitignores_checkout_overwrites_ignored(use_git: bool) {
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// Tests that a .gitignore'd file gets overwritten if check out a commit where
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// the file is tracked.
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let _home_dir = testutils::new_user_home();
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let settings = testutils::user_settings();
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let mut test_workspace = testutils::init_repo(&settings, use_git);
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let repo = &test_workspace.repo;
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let workspace_root = test_workspace.workspace.workspace_root().clone();
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// Write an ignored file called "modified" to disk
|
|
let gitignore_path = RepoPath::from_internal_string(".gitignore");
|
|
testutils::write_working_copy_file(&workspace_root, &gitignore_path, "modified\n");
|
|
let modified_path = RepoPath::from_internal_string("modified");
|
|
testutils::write_working_copy_file(&workspace_root, &modified_path, "garbage");
|
|
|
|
// Create a commit that adds the same file but with different contents
|
|
let mut tx = repo.start_transaction("test");
|
|
let mut tree_builder = repo
|
|
.store()
|
|
.tree_builder(repo.store().empty_tree_id().clone());
|
|
testutils::write_normal_file(&mut tree_builder, &modified_path, "contents");
|
|
let tree_id = tree_builder.write_tree();
|
|
let commit = CommitBuilder::for_new_commit(&settings, repo.store(), tree_id)
|
|
.set_open(true)
|
|
.set_description("add file".to_string())
|
|
.write_to_repo(tx.mut_repo());
|
|
let repo = tx.commit();
|
|
|
|
// Now check out the commit that adds the file "modified" with contents
|
|
// "contents". The exiting contents ("garbage") should be replaced in the
|
|
// working copy.
|
|
let wc = test_workspace.workspace.working_copy_mut();
|
|
wc.check_out(commit).unwrap();
|
|
|
|
// Check that the new contents are in the working copy
|
|
let path = workspace_root.join("modified");
|
|
assert!(path.is_file());
|
|
let mut file = File::open(path).unwrap();
|
|
let mut buf = Vec::new();
|
|
file.read_to_end(&mut buf).unwrap();
|
|
assert_eq!(buf, b"contents");
|
|
|
|
// Check that the file is in the tree created by committing the working copy
|
|
let mut locked_wc = wc.start_mutation();
|
|
let new_tree_id = locked_wc.write_tree();
|
|
locked_wc.discard();
|
|
let new_tree = repo
|
|
.store()
|
|
.get_tree(&RepoPath::root(), &new_tree_id)
|
|
.unwrap();
|
|
assert!(new_tree
|
|
.entry(&RepoPathComponent::from("modified"))
|
|
.is_some());
|
|
}
|
|
|
|
#[test_case(false ; "local backend")]
|
|
#[test_case(true ; "git backend")]
|
|
fn test_gitignores_ignored_directory_already_tracked(use_git: bool) {
|
|
// Tests that a .gitignore'd directory that already has a tracked file in it
|
|
// does not get removed when committing the working directory.
|
|
|
|
let _home_dir = testutils::new_user_home();
|
|
let settings = testutils::user_settings();
|
|
let mut test_workspace = testutils::init_repo(&settings, use_git);
|
|
let repo = &test_workspace.repo;
|
|
|
|
// Add a .gitignore file saying to ignore the directory "ignored/"
|
|
let gitignore_path = RepoPath::from_internal_string(".gitignore");
|
|
testutils::write_working_copy_file(
|
|
test_workspace.workspace.workspace_root(),
|
|
&gitignore_path,
|
|
"/ignored/\n",
|
|
);
|
|
let file_path = RepoPath::from_internal_string("ignored/file");
|
|
|
|
// Create a commit that adds a file in the ignored directory
|
|
let mut tx = repo.start_transaction("test");
|
|
let mut tree_builder = repo
|
|
.store()
|
|
.tree_builder(repo.store().empty_tree_id().clone());
|
|
testutils::write_normal_file(&mut tree_builder, &file_path, "contents");
|
|
let tree_id = tree_builder.write_tree();
|
|
let commit = CommitBuilder::for_new_commit(&settings, repo.store(), tree_id)
|
|
.set_open(true)
|
|
.set_description("add ignored file".to_string())
|
|
.write_to_repo(tx.mut_repo());
|
|
let repo = tx.commit();
|
|
|
|
// Check out the commit with the file in ignored/
|
|
let wc = test_workspace.workspace.working_copy_mut();
|
|
wc.check_out(commit).unwrap();
|
|
|
|
// Check that the file is still in the tree created by committing the working
|
|
// copy (that it didn't get removed because the directory is ignored)
|
|
let mut locked_wc = wc.start_mutation();
|
|
let new_tree_id = locked_wc.write_tree();
|
|
locked_wc.discard();
|
|
let new_tree = repo
|
|
.store()
|
|
.get_tree(&RepoPath::root(), &new_tree_id)
|
|
.unwrap();
|
|
assert!(new_tree.path_value(&file_path).is_some());
|
|
}
|
|
|
|
#[test_case(false ; "local backend")]
|
|
#[test_case(true ; "git backend")]
|
|
fn test_dotgit_ignored(use_git: bool) {
|
|
// Tests that .git directories and files are always ignored (we could accept
|
|
// them if the backend is not git).
|
|
|
|
let _home_dir = testutils::new_user_home();
|
|
let settings = testutils::user_settings();
|
|
let mut test_workspace = testutils::init_repo(&settings, use_git);
|
|
let repo = &test_workspace.repo;
|
|
let workspace_root = test_workspace.workspace.workspace_root().clone();
|
|
|
|
// Test with a .git/ directory (with a file in, since we don't write empty
|
|
// trees)
|
|
let dotgit_path = workspace_root.join(".git");
|
|
std::fs::create_dir(&dotgit_path).unwrap();
|
|
testutils::write_working_copy_file(
|
|
&workspace_root,
|
|
&RepoPath::from_internal_string(".git/file"),
|
|
"contents",
|
|
);
|
|
let mut locked_wc = test_workspace.workspace.working_copy_mut().start_mutation();
|
|
let new_tree_id = locked_wc.write_tree();
|
|
assert_eq!(new_tree_id, *repo.store().empty_tree_id());
|
|
locked_wc.discard();
|
|
std::fs::remove_dir_all(&dotgit_path).unwrap();
|
|
|
|
// Test with a .git file
|
|
testutils::write_working_copy_file(
|
|
&workspace_root,
|
|
&RepoPath::from_internal_string(".git"),
|
|
"contents",
|
|
);
|
|
let mut locked_wc = test_workspace.workspace.working_copy_mut().start_mutation();
|
|
let new_tree_id = locked_wc.write_tree();
|
|
assert_eq!(new_tree_id, *repo.store().empty_tree_id());
|
|
locked_wc.discard();
|
|
}
|