mirror of
https://github.com/martinvonz/jj.git
synced 2024-12-27 14:57:14 +00:00
f6a4cb57da
This will soon replace the `RepoRef` enum, just like how the `Index` trait replaced the `IndexRef` enum.
520 lines
18 KiB
Rust
520 lines
18 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::sync::Arc;
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use jujutsu_lib::backend::CommitId;
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use jujutsu_lib::commit::Commit;
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use jujutsu_lib::commit_builder::CommitBuilder;
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use jujutsu_lib::index::Index;
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use jujutsu_lib::repo::{MutableRepo, ReadonlyRepo, Repo, StoreFactories};
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use jujutsu_lib::settings::UserSettings;
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use test_case::test_case;
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use testutils::{create_random_commit, write_random_commit, CommitGraphBuilder, TestRepo};
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fn child_commit<'repo>(
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mut_repo: &'repo mut MutableRepo,
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settings: &UserSettings,
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commit: &Commit,
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) -> CommitBuilder<'repo> {
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create_random_commit(mut_repo, settings).set_parents(vec![commit.id().clone()])
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}
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// Helper just to reduce line wrapping
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fn generation_number(index: &dyn Index, commit_id: &CommitId) -> u32 {
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index.entry_by_id(commit_id).unwrap().generation_number()
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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_index_commits_empty_repo(use_git: bool) {
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let test_repo = TestRepo::init(use_git);
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let repo = &test_repo.repo;
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let index = repo.index();
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// There should be just the root commit
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assert_eq!(index.num_commits(), 1);
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// Check the generation numbers of the root and the working copy
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assert_eq!(generation_number(index, repo.store().root_commit_id()), 0);
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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_index_commits_standard_cases(use_git: bool) {
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init(use_git);
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let repo = &test_repo.repo;
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// o H
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// o | G
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// o | F
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// |\|
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// | o E
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// | o D
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// | o C
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// o | B
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// |/
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// o A
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// | o working copy
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// |/
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// o root
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let root_commit_id = repo.store().root_commit_id();
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let mut tx = repo.start_transaction(&settings, "test");
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let mut graph_builder = CommitGraphBuilder::new(&settings, tx.mut_repo());
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let commit_a = graph_builder.initial_commit();
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let commit_b = graph_builder.commit_with_parents(&[&commit_a]);
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let commit_c = graph_builder.commit_with_parents(&[&commit_a]);
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let commit_d = graph_builder.commit_with_parents(&[&commit_c]);
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let commit_e = graph_builder.commit_with_parents(&[&commit_d]);
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let commit_f = graph_builder.commit_with_parents(&[&commit_b, &commit_e]);
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let commit_g = graph_builder.commit_with_parents(&[&commit_f]);
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let commit_h = graph_builder.commit_with_parents(&[&commit_e]);
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let repo = tx.commit();
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let index = repo.index();
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// There should be the root commit, plus 8 more
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assert_eq!(index.num_commits(), 1 + 8);
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let stats = index.stats();
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assert_eq!(stats.num_commits, 1 + 8);
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assert_eq!(stats.num_merges, 1);
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assert_eq!(stats.max_generation_number, 6);
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assert_eq!(generation_number(index, root_commit_id), 0);
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assert_eq!(generation_number(index, commit_a.id()), 1);
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assert_eq!(generation_number(index, commit_b.id()), 2);
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assert_eq!(generation_number(index, commit_c.id()), 2);
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assert_eq!(generation_number(index, commit_d.id()), 3);
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assert_eq!(generation_number(index, commit_e.id()), 4);
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assert_eq!(generation_number(index, commit_f.id()), 5);
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assert_eq!(generation_number(index, commit_g.id()), 6);
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assert_eq!(generation_number(index, commit_h.id()), 5);
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assert!(index.is_ancestor(root_commit_id, commit_a.id()));
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assert!(!index.is_ancestor(commit_a.id(), root_commit_id));
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assert!(index.is_ancestor(root_commit_id, commit_b.id()));
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assert!(!index.is_ancestor(commit_b.id(), root_commit_id));
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assert!(!index.is_ancestor(commit_b.id(), commit_c.id()));
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assert!(index.is_ancestor(commit_a.id(), commit_b.id()));
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assert!(index.is_ancestor(commit_a.id(), commit_e.id()));
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assert!(index.is_ancestor(commit_a.id(), commit_f.id()));
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assert!(index.is_ancestor(commit_a.id(), commit_g.id()));
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assert!(index.is_ancestor(commit_a.id(), commit_h.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_index_commits_criss_cross(use_git: bool) {
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init(use_git);
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let repo = &test_repo.repo;
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let num_generations = 50;
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// Create a long chain of criss-crossed merges. If they were traversed without
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// keeping track of visited nodes, it would be 2^50 visits, so if this test
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// finishes in reasonable time, we know that we don't do a naive traversal.
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let mut tx = repo.start_transaction(&settings, "test");
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let mut graph_builder = CommitGraphBuilder::new(&settings, tx.mut_repo());
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let mut left_commits = vec![graph_builder.initial_commit()];
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let mut right_commits = vec![graph_builder.initial_commit()];
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for gen in 1..num_generations {
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let new_left =
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graph_builder.commit_with_parents(&[&left_commits[gen - 1], &right_commits[gen - 1]]);
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let new_right =
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graph_builder.commit_with_parents(&[&left_commits[gen - 1], &right_commits[gen - 1]]);
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left_commits.push(new_left);
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right_commits.push(new_right);
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}
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let repo = tx.commit();
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let index = repo.index();
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// There should the root commit, plus 2 for each generation
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assert_eq!(index.num_commits(), 1 + 2 * (num_generations as u32));
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let stats = index.stats();
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assert_eq!(stats.num_commits, 1 + 2 * (num_generations as u32));
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// The first generations are not merges
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assert_eq!(stats.num_merges, 2 * (num_generations as u32 - 1));
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assert_eq!(stats.max_generation_number, num_generations as u32);
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// Check generation numbers
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for gen in 0..num_generations {
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assert_eq!(
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generation_number(index, left_commits[gen].id()),
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(gen as u32) + 1
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);
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assert_eq!(
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generation_number(index, right_commits[gen].id()),
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(gen as u32) + 1
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);
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}
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// The left and right commits of the same generation should not be ancestors of
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// each other
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for gen in 0..num_generations {
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assert!(!index.is_ancestor(left_commits[gen].id(), right_commits[gen].id()));
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assert!(!index.is_ancestor(right_commits[gen].id(), left_commits[gen].id()));
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}
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// Both sides of earlier generations should be ancestors. Check a few different
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// earlier generations.
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for gen in 1..num_generations {
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for ancestor_side in &[&left_commits, &right_commits] {
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for descendant_side in &[&left_commits, &right_commits] {
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assert!(index.is_ancestor(ancestor_side[0].id(), descendant_side[gen].id()));
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assert!(index.is_ancestor(ancestor_side[gen - 1].id(), descendant_side[gen].id()));
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assert!(index.is_ancestor(ancestor_side[gen / 2].id(), descendant_side[gen].id()));
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}
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}
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}
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// RevWalk deduplicates chains by entry.
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assert_eq!(
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index
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.walk_revs(&[left_commits[num_generations - 1].id().clone()], &[])
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.count(),
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2 * num_generations
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);
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assert_eq!(
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index
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.walk_revs(&[right_commits[num_generations - 1].id().clone()], &[])
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.count(),
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2 * num_generations
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);
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assert_eq!(
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index
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.walk_revs(
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&[left_commits[num_generations - 1].id().clone()],
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&[left_commits[num_generations - 2].id().clone()]
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)
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.count(),
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2
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);
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assert_eq!(
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index
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.walk_revs(
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&[right_commits[num_generations - 1].id().clone()],
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&[right_commits[num_generations - 2].id().clone()]
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)
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.count(),
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2
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);
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// RevWalkGenerationRange deduplicates chains by (entry, generation), which may
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// be more expensive than RevWalk, but should still finish in reasonable time.
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assert_eq!(
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index
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.walk_revs(&[left_commits[num_generations - 1].id().clone()], &[])
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.filter_by_generation(0..(num_generations + 1) as u32)
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.count(),
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2 * num_generations
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);
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assert_eq!(
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index
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.walk_revs(&[right_commits[num_generations - 1].id().clone()], &[])
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.filter_by_generation(0..(num_generations + 1) as u32)
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.count(),
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2 * num_generations
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);
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assert_eq!(
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index
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.walk_revs(
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&[left_commits[num_generations - 1].id().clone()],
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&[left_commits[num_generations - 2].id().clone()]
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)
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.filter_by_generation(0..(num_generations + 1) as u32)
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.count(),
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2
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);
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assert_eq!(
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index
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.walk_revs(
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&[right_commits[num_generations - 1].id().clone()],
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&[right_commits[num_generations - 2].id().clone()]
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)
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.filter_by_generation(0..(num_generations + 1) as u32)
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.count(),
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2
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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_index_commits_previous_operations(use_git: bool) {
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// Test that commits visible only in previous operations are indexed.
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init(use_git);
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let repo = &test_repo.repo;
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// Remove commit B and C in one operation and make sure they're still
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// visible in the index after that operation.
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// o C
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// o B
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// o A
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// | o working copy
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// |/
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// o root
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let mut tx = repo.start_transaction(&settings, "test");
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let mut graph_builder = CommitGraphBuilder::new(&settings, tx.mut_repo());
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let commit_a = graph_builder.initial_commit();
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let commit_b = graph_builder.commit_with_parents(&[&commit_a]);
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let commit_c = graph_builder.commit_with_parents(&[&commit_b]);
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let repo = tx.commit();
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let mut tx = repo.start_transaction(&settings, "test");
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tx.mut_repo().remove_head(commit_c.id());
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let repo = tx.commit();
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// Delete index from disk
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let index_operations_dir = repo.repo_path().join("index").join("operations");
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assert!(index_operations_dir.is_dir());
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std::fs::remove_dir_all(&index_operations_dir).unwrap();
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std::fs::create_dir(&index_operations_dir).unwrap();
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let repo = ReadonlyRepo::load_at_head(&settings, repo.repo_path(), &StoreFactories::default())
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.unwrap();
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let index = repo.index();
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// There should be the root commit, plus 3 more
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assert_eq!(index.num_commits(), 1 + 3);
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let stats = index.stats();
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assert_eq!(stats.num_commits, 1 + 3);
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assert_eq!(stats.num_merges, 0);
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assert_eq!(stats.max_generation_number, 3);
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assert_eq!(generation_number(index, commit_a.id()), 1);
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assert_eq!(generation_number(index, commit_b.id()), 2);
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assert_eq!(generation_number(index, commit_c.id()), 3);
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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_index_commits_incremental(use_git: bool) {
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init(use_git);
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let repo = &test_repo.repo;
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// Create A in one operation, then B and C in another. Check that the index is
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// valid after.
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// o C
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// o B
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// o A
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// | o working copy
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// |/
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// o root
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let root_commit = repo.store().root_commit();
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let mut tx = repo.start_transaction(&settings, "test");
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let commit_a = child_commit(tx.mut_repo(), &settings, &root_commit)
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.write()
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.unwrap();
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let repo = tx.commit();
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let index = repo.index();
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// There should be the root commit, plus 1 more
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assert_eq!(index.num_commits(), 1 + 1);
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let mut tx = repo.start_transaction(&settings, "test");
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let commit_b = child_commit(tx.mut_repo(), &settings, &commit_a)
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.write()
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.unwrap();
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let commit_c = child_commit(tx.mut_repo(), &settings, &commit_b)
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.write()
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.unwrap();
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tx.commit();
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let repo = ReadonlyRepo::load_at_head(&settings, repo.repo_path(), &StoreFactories::default())
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.unwrap();
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let index = repo.index();
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// There should be the root commit, plus 3 more
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assert_eq!(index.num_commits(), 1 + 3);
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let stats = index.stats();
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assert_eq!(stats.num_commits, 1 + 3);
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assert_eq!(stats.num_merges, 0);
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assert_eq!(stats.max_generation_number, 3);
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assert_eq!(stats.levels.len(), 1);
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assert_eq!(stats.levels[0].num_commits, 4);
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assert_eq!(generation_number(index, root_commit.id()), 0);
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assert_eq!(generation_number(index, commit_a.id()), 1);
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assert_eq!(generation_number(index, commit_b.id()), 2);
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assert_eq!(generation_number(index, commit_c.id()), 3);
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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_index_commits_incremental_empty_transaction(use_git: bool) {
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init(use_git);
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let repo = &test_repo.repo;
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// Create A in one operation, then just an empty transaction. Check that the
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// index is valid after.
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// o A
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// | o working copy
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// |/
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// o root
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let root_commit = repo.store().root_commit();
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let mut tx = repo.start_transaction(&settings, "test");
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let commit_a = child_commit(tx.mut_repo(), &settings, &root_commit)
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.write()
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.unwrap();
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let repo = tx.commit();
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let index = repo.index();
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// There should be the root commit, plus 1 more
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assert_eq!(index.num_commits(), 1 + 1);
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repo.start_transaction(&settings, "test").commit();
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let repo = ReadonlyRepo::load_at_head(&settings, repo.repo_path(), &StoreFactories::default())
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.unwrap();
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let index = repo.index();
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// There should be the root commit, plus 1 more
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assert_eq!(index.num_commits(), 1 + 1);
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let stats = index.stats();
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assert_eq!(stats.num_commits, 1 + 1);
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assert_eq!(stats.num_merges, 0);
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assert_eq!(stats.max_generation_number, 1);
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assert_eq!(stats.levels.len(), 1);
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assert_eq!(stats.levels[0].num_commits, 2);
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assert_eq!(generation_number(index, root_commit.id()), 0);
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assert_eq!(generation_number(index, commit_a.id()), 1);
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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_index_commits_incremental_already_indexed(use_git: bool) {
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// Tests that trying to add a commit that's already been added is a no-op.
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init(use_git);
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let repo = &test_repo.repo;
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// Create A in one operation, then try to add it again an new transaction.
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// o A
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// | o working copy
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// |/
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// o root
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let root_commit = repo.store().root_commit();
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let mut tx = repo.start_transaction(&settings, "test");
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let commit_a = child_commit(tx.mut_repo(), &settings, &root_commit)
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.write()
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.unwrap();
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let repo = tx.commit();
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assert!(repo.index().has_id(commit_a.id()));
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assert_eq!(repo.index().num_commits(), 1 + 1);
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let mut tx = repo.start_transaction(&settings, "test");
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let mut_repo = tx.mut_repo();
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mut_repo.add_head(&commit_a);
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assert_eq!(mut_repo.index().num_commits(), 1 + 1);
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}
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#[must_use]
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fn create_n_commits(
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settings: &UserSettings,
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repo: &Arc<ReadonlyRepo>,
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num_commits: i32,
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) -> Arc<ReadonlyRepo> {
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let mut tx = repo.start_transaction(settings, "test");
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for _ in 0..num_commits {
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write_random_commit(tx.mut_repo(), settings);
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}
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tx.commit()
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}
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fn commits_by_level(repo: &Arc<ReadonlyRepo>) -> Vec<u32> {
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repo.index()
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.stats()
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.levels
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.iter()
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.map(|level| level.num_commits)
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.collect()
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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_index_commits_incremental_squashed(use_git: bool) {
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init(use_git);
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let repo = &test_repo.repo;
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let repo = create_n_commits(&settings, repo, 1);
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assert_eq!(commits_by_level(&repo), vec![2]);
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let repo = create_n_commits(&settings, &repo, 1);
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assert_eq!(commits_by_level(&repo), vec![3]);
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let test_repo = TestRepo::init(use_git);
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let repo = &test_repo.repo;
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let repo = create_n_commits(&settings, repo, 2);
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assert_eq!(commits_by_level(&repo), vec![3]);
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let test_repo = TestRepo::init(use_git);
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let repo = &test_repo.repo;
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let repo = create_n_commits(&settings, repo, 100);
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assert_eq!(commits_by_level(&repo), vec![101]);
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let test_repo = TestRepo::init(use_git);
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let repo = &test_repo.repo;
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let repo = create_n_commits(&settings, repo, 1);
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let repo = create_n_commits(&settings, &repo, 2);
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let repo = create_n_commits(&settings, &repo, 4);
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let repo = create_n_commits(&settings, &repo, 8);
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let repo = create_n_commits(&settings, &repo, 16);
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let repo = create_n_commits(&settings, &repo, 32);
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assert_eq!(commits_by_level(&repo), vec![64]);
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let test_repo = TestRepo::init(use_git);
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let repo = &test_repo.repo;
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let repo = create_n_commits(&settings, repo, 32);
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let repo = create_n_commits(&settings, &repo, 16);
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let repo = create_n_commits(&settings, &repo, 8);
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let repo = create_n_commits(&settings, &repo, 4);
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let repo = create_n_commits(&settings, &repo, 2);
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assert_eq!(commits_by_level(&repo), vec![57, 6]);
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let test_repo = TestRepo::init(use_git);
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let repo = &test_repo.repo;
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let repo = create_n_commits(&settings, repo, 30);
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let repo = create_n_commits(&settings, &repo, 15);
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let repo = create_n_commits(&settings, &repo, 7);
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let repo = create_n_commits(&settings, &repo, 3);
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let repo = create_n_commits(&settings, &repo, 1);
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assert_eq!(commits_by_level(&repo), vec![31, 15, 7, 3, 1]);
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let test_repo = TestRepo::init(use_git);
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let repo = &test_repo.repo;
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let repo = create_n_commits(&settings, repo, 10);
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let repo = create_n_commits(&settings, &repo, 10);
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let repo = create_n_commits(&settings, &repo, 10);
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let repo = create_n_commits(&settings, &repo, 10);
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let repo = create_n_commits(&settings, &repo, 10);
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let repo = create_n_commits(&settings, &repo, 10);
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let repo = create_n_commits(&settings, &repo, 10);
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let repo = create_n_commits(&settings, &repo, 10);
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let repo = create_n_commits(&settings, &repo, 10);
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assert_eq!(commits_by_level(&repo), vec![71, 20]);
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}
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