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https://github.com/martinvonz/jj.git
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aac5b7aa25
Almost everyone calls the project "jj", and there seeems to be consensus that we should rename the crates. I originally wanted the crates to be called `jj` and `jj-lib`, but `jj` was already taken. `jj-cli` is probably at least as good for it anyway. Once we've published a 0.8.0 under the new names, we'll release 0.7.1 versions under the old names with pointers to the new crates names.
102 lines
3.7 KiB
Rust
102 lines
3.7 KiB
Rust
// Copyright 2020 The Jujutsu Authors
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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::cmp::max;
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use std::sync::Arc;
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use std::thread;
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use jj_lib::dag_walk;
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use jj_lib::repo::{ReadonlyRepo, Repo};
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use test_case::test_case;
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use testutils::{load_repo_at_head, write_random_commit, TestWorkspace};
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fn count_non_merge_operations(repo: &Arc<ReadonlyRepo>) -> usize {
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let op_store = repo.op_store();
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let op_id = repo.op_id().clone();
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let mut num_ops = 0;
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for op_id in dag_walk::dfs(
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vec![op_id],
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|op_id| op_id.clone(),
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|op_id| op_store.read_operation(op_id).unwrap().parents,
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) {
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if op_store.read_operation(&op_id).unwrap().parents.len() <= 1 {
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num_ops += 1;
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}
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}
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num_ops
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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_parallel(use_git: bool) {
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// This loads a Repo instance and creates and commits many concurrent
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// transactions from it. It then reloads the repo. That should merge all the
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// operations and all commits should be visible.
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let settings = testutils::user_settings();
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let test_workspace = TestWorkspace::init(&settings, use_git);
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let repo = &test_workspace.repo;
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let num_threads = max(num_cpus::get(), 4);
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thread::scope(|s| {
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for _ in 0..num_threads {
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let settings = settings.clone();
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let repo = repo.clone();
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s.spawn(move || {
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let mut tx = repo.start_transaction(&settings, "test");
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write_random_commit(tx.mut_repo(), &settings);
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tx.commit();
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});
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}
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});
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let repo = repo.reload_at_head(&settings).unwrap();
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// One commit per thread plus the commit from the initial working-copy on top of
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// the root commit
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assert_eq!(repo.view().heads().len(), num_threads + 1);
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// One additional operation for initializing the repo, one for checking out the
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// initial commit.
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assert_eq!(count_non_merge_operations(&repo), num_threads + 2);
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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_parallel_instances(use_git: bool) {
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// Like the test above but creates a new repo instance for every thread, which
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// makes it behave very similar to separate processes.
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let settings = testutils::user_settings();
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let test_workspace = TestWorkspace::init(&settings, use_git);
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let repo = &test_workspace.repo;
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let num_threads = max(num_cpus::get(), 4);
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thread::scope(|s| {
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for _ in 0..num_threads {
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let settings = settings.clone();
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let repo = load_repo_at_head(&settings, repo.repo_path());
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s.spawn(move || {
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let mut tx = repo.start_transaction(&settings, "test");
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write_random_commit(tx.mut_repo(), &settings);
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tx.commit();
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});
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}
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});
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// One commit per thread plus the commit from the initial working-copy commit on
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// top of the root commit
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let repo = load_repo_at_head(&settings, repo.repo_path());
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assert_eq!(repo.view().heads().len(), num_threads + 1);
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// One addition operation for initializing the repo, one for checking out the
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// initial commit.
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assert_eq!(count_non_merge_operations(&repo), num_threads + 2);
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}
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