mirror of
https://github.com/martinvonz/jj.git
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5d2c0347a2
Merge commits are very similar to non-merge commits in jj. An empty merge commit with no description is not really different from an empty non-merge commit with no description. As we discussed on https://github.com/martinvonz/jj/issues/2859, we should not treat merge commits differently when updating away from them. This patch adds test for the current behavior (which is to leave the merge commit in place).
569 lines
21 KiB
Rust
569 lines
21 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 jj_lib::backend::CommitId;
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use jj_lib::op_store::{RefTarget, RemoteRef, RemoteRefState, WorkspaceId};
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use jj_lib::repo::Repo;
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use maplit::hashset;
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use testutils::{
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assert_rebased_onto, create_random_commit, write_random_commit, CommitGraphBuilder, TestRepo,
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};
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#[test]
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fn test_edit() {
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// Test that MutableRepo::edit() uses the requested commit (not a new child)
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init();
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let repo = &test_repo.repo;
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let mut tx = repo.start_transaction(&settings);
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let wc_commit = write_random_commit(tx.mut_repo(), &settings);
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let repo = tx.commit("test");
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let mut tx = repo.start_transaction(&settings);
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let ws_id = WorkspaceId::default();
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tx.mut_repo().edit(ws_id.clone(), &wc_commit).unwrap();
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let repo = tx.commit("test");
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assert_eq!(repo.view().get_wc_commit_id(&ws_id), Some(wc_commit.id()));
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}
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#[test]
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fn test_checkout() {
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// Test that MutableRepo::check_out() creates a child
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init();
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let repo = &test_repo.repo;
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let mut tx = repo.start_transaction(&settings);
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let wc_commit_parent = write_random_commit(tx.mut_repo(), &settings);
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let repo = tx.commit("test");
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let mut tx = repo.start_transaction(&settings);
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let ws_id = WorkspaceId::default();
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let wc_commit = tx
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.mut_repo()
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.check_out(ws_id.clone(), &settings, &wc_commit_parent)
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.unwrap();
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assert_eq!(wc_commit.tree_id(), wc_commit_parent.tree_id());
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assert_eq!(wc_commit.parent_ids().len(), 1);
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assert_eq!(&wc_commit.parent_ids()[0], wc_commit_parent.id());
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let repo = tx.commit("test");
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assert_eq!(repo.view().get_wc_commit_id(&ws_id), Some(wc_commit.id()));
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}
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#[test]
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fn test_edit_previous_not_empty() {
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// Test that MutableRepo::edit() does not usually abandon the previous
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// commit.
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init();
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let repo = &test_repo.repo;
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let mut tx = repo.start_transaction(&settings);
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let mut_repo = tx.mut_repo();
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let old_wc_commit = write_random_commit(mut_repo, &settings);
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let ws_id = WorkspaceId::default();
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mut_repo.edit(ws_id.clone(), &old_wc_commit).unwrap();
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let repo = tx.commit("test");
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let mut tx = repo.start_transaction(&settings);
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let mut_repo = tx.mut_repo();
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let new_wc_commit = write_random_commit(mut_repo, &settings);
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mut_repo.edit(ws_id, &new_wc_commit).unwrap();
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mut_repo.rebase_descendants(&settings).unwrap();
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assert!(mut_repo.view().heads().contains(old_wc_commit.id()));
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}
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#[test]
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fn test_edit_previous_empty() {
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// Test that MutableRepo::edit() abandons the previous commit if it was
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// empty.
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init();
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let repo = &test_repo.repo;
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let mut tx = repo.start_transaction(&settings);
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let mut_repo = tx.mut_repo();
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let old_wc_commit = mut_repo
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.new_commit(
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&settings,
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vec![repo.store().root_commit_id().clone()],
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repo.store().empty_merged_tree_id(),
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)
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.write()
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.unwrap();
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let ws_id = WorkspaceId::default();
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mut_repo.edit(ws_id.clone(), &old_wc_commit).unwrap();
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let repo = tx.commit("test");
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let mut tx = repo.start_transaction(&settings);
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let mut_repo = tx.mut_repo();
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let new_wc_commit = write_random_commit(mut_repo, &settings);
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mut_repo.edit(ws_id, &new_wc_commit).unwrap();
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mut_repo.rebase_descendants(&settings).unwrap();
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assert!(!mut_repo.view().heads().contains(old_wc_commit.id()));
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}
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#[test]
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fn test_edit_previous_empty_merge() {
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// Test that MutableRepo::edit() abandons the previous commit if it was
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// an empty merge commit.
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init();
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let repo = &test_repo.repo;
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let mut tx = repo.start_transaction(&settings);
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let mut_repo = tx.mut_repo();
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let old_parent1 = write_random_commit(mut_repo, &settings);
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let old_parent2 = write_random_commit(mut_repo, &settings);
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let empty_tree = repo.store().root_commit().tree().unwrap();
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let old_parent_tree = old_parent1
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.tree()
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.unwrap()
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.merge(&empty_tree, &old_parent2.tree().unwrap())
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.unwrap();
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let old_wc_commit = mut_repo
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.new_commit(
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&settings,
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vec![old_parent1.id().clone(), old_parent2.id().clone()],
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repo.store().empty_merged_tree_id(),
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)
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.set_tree_id(old_parent_tree.id())
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.write()
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.unwrap();
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let ws_id = WorkspaceId::default();
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mut_repo.edit(ws_id.clone(), &old_wc_commit).unwrap();
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let repo = tx.commit("test");
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let mut tx = repo.start_transaction(&settings);
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let mut_repo = tx.mut_repo();
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let new_wc_commit = write_random_commit(mut_repo, &settings);
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mut_repo.edit(ws_id, &new_wc_commit).unwrap();
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mut_repo.rebase_descendants(&settings).unwrap();
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// TODO: The old commit should no longer be visible
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assert!(mut_repo.view().heads().contains(old_wc_commit.id()));
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}
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#[test]
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fn test_edit_previous_empty_with_description() {
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// Test that MutableRepo::edit() does not abandon the previous commit if it
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// has a non-empty description.
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init();
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let repo = &test_repo.repo;
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let mut tx = repo.start_transaction(&settings);
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let mut_repo = tx.mut_repo();
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let old_wc_commit = mut_repo
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.new_commit(
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&settings,
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vec![repo.store().root_commit_id().clone()],
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repo.store().empty_merged_tree_id(),
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)
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.set_description("not empty")
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.write()
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.unwrap();
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let ws_id = WorkspaceId::default();
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mut_repo.edit(ws_id.clone(), &old_wc_commit).unwrap();
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let repo = tx.commit("test");
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let mut tx = repo.start_transaction(&settings);
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let mut_repo = tx.mut_repo();
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let new_wc_commit = write_random_commit(mut_repo, &settings);
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mut_repo.edit(ws_id, &new_wc_commit).unwrap();
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mut_repo.rebase_descendants(&settings).unwrap();
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assert!(mut_repo.view().heads().contains(old_wc_commit.id()));
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}
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#[test]
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fn test_edit_previous_empty_with_local_branch() {
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// Test that MutableRepo::edit() does not abandon the previous commit if it
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// is pointed by local branch.
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init();
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let repo = &test_repo.repo;
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let mut tx = repo.start_transaction(&settings);
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let mut_repo = tx.mut_repo();
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let old_wc_commit = mut_repo
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.new_commit(
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&settings,
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vec![repo.store().root_commit_id().clone()],
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repo.store().empty_merged_tree_id(),
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)
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.write()
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.unwrap();
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mut_repo.set_local_branch_target("b", RefTarget::normal(old_wc_commit.id().clone()));
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let ws_id = WorkspaceId::default();
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mut_repo.edit(ws_id.clone(), &old_wc_commit).unwrap();
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let repo = tx.commit("test");
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let mut tx = repo.start_transaction(&settings);
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let mut_repo = tx.mut_repo();
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let new_wc_commit = write_random_commit(mut_repo, &settings);
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mut_repo.edit(ws_id, &new_wc_commit).unwrap();
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mut_repo.rebase_descendants(&settings).unwrap();
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assert!(mut_repo.view().heads().contains(old_wc_commit.id()));
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}
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#[test]
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fn test_edit_previous_empty_non_head() {
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// Test that MutableRepo::edit() does not abandon the previous commit if it
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// was empty and is not a head
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init();
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let repo = &test_repo.repo;
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let mut tx = repo.start_transaction(&settings);
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let mut_repo = tx.mut_repo();
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let old_wc_commit = mut_repo
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.new_commit(
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&settings,
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vec![repo.store().root_commit_id().clone()],
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repo.store().empty_merged_tree_id(),
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)
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.write()
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.unwrap();
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let old_child = mut_repo
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.new_commit(
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&settings,
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vec![old_wc_commit.id().clone()],
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old_wc_commit.tree_id().clone(),
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)
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.write()
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.unwrap();
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let ws_id = WorkspaceId::default();
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mut_repo.edit(ws_id.clone(), &old_wc_commit).unwrap();
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let repo = tx.commit("test");
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let mut tx = repo.start_transaction(&settings);
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let mut_repo = tx.mut_repo();
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let new_wc_commit = write_random_commit(mut_repo, &settings);
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mut_repo.edit(ws_id, &new_wc_commit).unwrap();
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mut_repo.rebase_descendants(&settings).unwrap();
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assert_eq!(
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*mut_repo.view().heads(),
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hashset! {old_child.id().clone(), new_wc_commit.id().clone()}
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);
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}
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#[test]
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fn test_edit_initial() {
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// Test that MutableRepo::edit() can be used on the initial working-copy commit
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// in a workspace
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init();
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let repo = &test_repo.repo;
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let mut tx = repo.start_transaction(&settings);
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let wc_commit = write_random_commit(tx.mut_repo(), &settings);
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let repo = tx.commit("test");
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let mut tx = repo.start_transaction(&settings);
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let workspace_id = WorkspaceId::new("new-workspace".to_string());
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tx.mut_repo()
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.edit(workspace_id.clone(), &wc_commit)
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.unwrap();
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let repo = tx.commit("test");
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assert_eq!(
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repo.view().get_wc_commit_id(&workspace_id),
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Some(wc_commit.id())
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);
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}
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#[test]
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fn test_add_head_success() {
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// Test that MutableRepo::add_head() adds the head, and that it's still there
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// after commit. It should also be indexed.
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init();
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let repo = &test_repo.repo;
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// Create a commit outside of the repo by using a temporary transaction. Then
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// add that as a head.
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let mut tx = repo.start_transaction(&settings);
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let new_commit = write_random_commit(tx.mut_repo(), &settings);
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drop(tx);
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let mut tx = repo.start_transaction(&settings);
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let mut_repo = tx.mut_repo();
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assert!(!mut_repo.view().heads().contains(new_commit.id()));
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assert!(!mut_repo.index().has_id(new_commit.id()));
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mut_repo.add_head(&new_commit).unwrap();
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assert!(mut_repo.view().heads().contains(new_commit.id()));
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assert!(mut_repo.index().has_id(new_commit.id()));
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let repo = tx.commit("test");
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assert!(repo.view().heads().contains(new_commit.id()));
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assert!(repo.index().has_id(new_commit.id()));
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}
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#[test]
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fn test_add_head_ancestor() {
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// Test that MutableRepo::add_head() does not add a head if it's an ancestor of
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// an existing head.
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init();
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let repo = &test_repo.repo;
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let mut tx = repo.start_transaction(&settings);
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let mut graph_builder = CommitGraphBuilder::new(&settings, tx.mut_repo());
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let commit1 = graph_builder.initial_commit();
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let commit2 = graph_builder.commit_with_parents(&[&commit1]);
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let commit3 = graph_builder.commit_with_parents(&[&commit2]);
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let repo = tx.commit("test");
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assert_eq!(repo.view().heads(), &hashset! {commit3.id().clone()});
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let mut tx = repo.start_transaction(&settings);
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let mut_repo = tx.mut_repo();
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mut_repo.add_head(&commit1).unwrap();
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assert_eq!(repo.view().heads(), &hashset! {commit3.id().clone()});
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}
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#[test]
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fn test_add_head_not_immediate_child() {
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// Test that MutableRepo::add_head() can be used for adding a head that is not
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// an immediate child of a current head.
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init();
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let repo = &test_repo.repo;
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let mut tx = repo.start_transaction(&settings);
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let initial = write_random_commit(tx.mut_repo(), &settings);
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let repo = tx.commit("test");
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// Create some commits outside of the repo by using a temporary transaction.
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// Then add one of them as a head.
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let mut tx = repo.start_transaction(&settings);
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let rewritten = create_random_commit(tx.mut_repo(), &settings)
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.set_change_id(initial.change_id().clone())
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.set_predecessors(vec![initial.id().clone()])
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.write()
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.unwrap();
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let child = create_random_commit(tx.mut_repo(), &settings)
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.set_parents(vec![rewritten.id().clone()])
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.write()
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.unwrap();
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drop(tx);
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assert_eq!(repo.view().heads(), &hashset! {initial.id().clone()});
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let mut tx = repo.start_transaction(&settings);
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let mut_repo = tx.mut_repo();
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mut_repo.add_head(&child).unwrap();
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assert_eq!(
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mut_repo.view().heads(),
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&hashset! {initial.id().clone(), child.id().clone()}
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);
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assert!(mut_repo.index().has_id(initial.id()));
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assert!(mut_repo.index().has_id(rewritten.id()));
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assert!(mut_repo.index().has_id(child.id()));
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}
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#[test]
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fn test_remove_head() {
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// Test that MutableRepo::remove_head() removes the head, and that it's still
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// removed after commit. It should remain in the index, since we otherwise would
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// have to reindex everything.
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init();
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let repo = &test_repo.repo;
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let mut tx = repo.start_transaction(&settings);
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let mut graph_builder = CommitGraphBuilder::new(&settings, tx.mut_repo());
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let commit1 = graph_builder.initial_commit();
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let commit2 = graph_builder.commit_with_parents(&[&commit1]);
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let commit3 = graph_builder.commit_with_parents(&[&commit2]);
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let repo = tx.commit("test");
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let mut tx = repo.start_transaction(&settings);
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let mut_repo = tx.mut_repo();
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assert!(mut_repo.view().heads().contains(commit3.id()));
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mut_repo.remove_head(commit3.id());
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let heads = mut_repo.view().heads().clone();
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assert!(!heads.contains(commit3.id()));
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assert!(!heads.contains(commit2.id()));
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assert!(!heads.contains(commit1.id()));
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assert!(mut_repo.index().has_id(commit1.id()));
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assert!(mut_repo.index().has_id(commit2.id()));
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assert!(mut_repo.index().has_id(commit3.id()));
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let repo = tx.commit("test");
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let heads = repo.view().heads().clone();
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assert!(!heads.contains(commit3.id()));
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assert!(!heads.contains(commit2.id()));
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assert!(!heads.contains(commit1.id()));
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assert!(repo.index().has_id(commit1.id()));
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assert!(repo.index().has_id(commit2.id()));
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assert!(repo.index().has_id(commit3.id()));
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}
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|
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#[test]
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fn test_has_changed() {
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// Test that MutableRepo::has_changed() reports changes iff the view has changed
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// (e.g. not after setting a branch to point to where it was already
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// pointing).
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init();
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let repo = &test_repo.repo;
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let normal_remote_ref = |id: &CommitId| RemoteRef {
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target: RefTarget::normal(id.clone()),
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state: RemoteRefState::Tracking, // doesn't matter
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};
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let mut tx = repo.start_transaction(&settings);
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let mut_repo = tx.mut_repo();
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let commit1 = write_random_commit(mut_repo, &settings);
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let commit2 = write_random_commit(mut_repo, &settings);
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mut_repo.remove_head(commit2.id());
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let ws_id = WorkspaceId::default();
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mut_repo
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.set_wc_commit(ws_id.clone(), commit1.id().clone())
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.unwrap();
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mut_repo.set_local_branch_target("main", RefTarget::normal(commit1.id().clone()));
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mut_repo.set_remote_branch("main", "origin", normal_remote_ref(commit1.id()));
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let repo = tx.commit("test");
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// Test the setup
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assert_eq!(repo.view().heads(), &hashset! {commit1.id().clone()});
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let mut tx = repo.start_transaction(&settings);
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let mut_repo = tx.mut_repo();
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mut_repo.add_head(&commit1).unwrap();
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mut_repo
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.set_wc_commit(ws_id.clone(), commit1.id().clone())
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.unwrap();
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mut_repo.set_local_branch_target("main", RefTarget::normal(commit1.id().clone()));
|
|
mut_repo.set_remote_branch("main", "origin", normal_remote_ref(commit1.id()));
|
|
assert!(!mut_repo.has_changes());
|
|
|
|
mut_repo.remove_head(commit2.id());
|
|
mut_repo.set_local_branch_target("stable", RefTarget::absent());
|
|
mut_repo.set_remote_branch("stable", "origin", RemoteRef::absent());
|
|
assert!(!mut_repo.has_changes());
|
|
|
|
mut_repo.add_head(&commit2).unwrap();
|
|
assert!(mut_repo.has_changes());
|
|
mut_repo.remove_head(commit2.id());
|
|
assert!(!mut_repo.has_changes());
|
|
|
|
mut_repo
|
|
.set_wc_commit(ws_id.clone(), commit2.id().clone())
|
|
.unwrap();
|
|
assert!(mut_repo.has_changes());
|
|
mut_repo.set_wc_commit(ws_id, commit1.id().clone()).unwrap();
|
|
assert!(!mut_repo.has_changes());
|
|
|
|
mut_repo.set_local_branch_target("main", RefTarget::normal(commit2.id().clone()));
|
|
assert!(mut_repo.has_changes());
|
|
mut_repo.set_local_branch_target("main", RefTarget::normal(commit1.id().clone()));
|
|
assert!(!mut_repo.has_changes());
|
|
|
|
mut_repo.set_remote_branch("main", "origin", normal_remote_ref(commit2.id()));
|
|
assert!(mut_repo.has_changes());
|
|
mut_repo.set_remote_branch("main", "origin", normal_remote_ref(commit1.id()));
|
|
assert!(!mut_repo.has_changes());
|
|
}
|
|
|
|
#[test]
|
|
fn test_rebase_descendants_simple() {
|
|
// There are many additional tests of this functionality in `test_rewrite.rs`.
|
|
let settings = testutils::user_settings();
|
|
let test_repo = TestRepo::init();
|
|
let repo = &test_repo.repo;
|
|
|
|
let mut tx = repo.start_transaction(&settings);
|
|
let mut graph_builder = CommitGraphBuilder::new(&settings, tx.mut_repo());
|
|
let commit1 = graph_builder.initial_commit();
|
|
let commit2 = graph_builder.commit_with_parents(&[&commit1]);
|
|
let commit3 = graph_builder.commit_with_parents(&[&commit2]);
|
|
let commit4 = graph_builder.commit_with_parents(&[&commit1]);
|
|
let commit5 = graph_builder.commit_with_parents(&[&commit4]);
|
|
let repo = tx.commit("test");
|
|
|
|
let mut tx = repo.start_transaction(&settings);
|
|
let mut_repo = tx.mut_repo();
|
|
let mut graph_builder = CommitGraphBuilder::new(&settings, mut_repo);
|
|
let commit6 = graph_builder.commit_with_parents(&[&commit1]);
|
|
mut_repo.set_rewritten_commit(commit2.id().clone(), commit6.id().clone());
|
|
mut_repo.record_abandoned_commit(commit4.id().clone());
|
|
let rebase_map = tx
|
|
.mut_repo()
|
|
.rebase_descendants_return_map(&settings)
|
|
.unwrap();
|
|
// Commit 3 got rebased onto commit 2's replacement, i.e. commit 6
|
|
assert_rebased_onto(tx.mut_repo(), &rebase_map, &commit3, &[commit6.id()]);
|
|
// Commit 5 got rebased onto commit 4's parent, i.e. commit 1
|
|
assert_rebased_onto(tx.mut_repo(), &rebase_map, &commit5, &[commit1.id()]);
|
|
assert_eq!(rebase_map.len(), 2);
|
|
|
|
// No more descendants to rebase if we try again.
|
|
let rebase_map = tx
|
|
.mut_repo()
|
|
.rebase_descendants_return_map(&settings)
|
|
.unwrap();
|
|
assert_eq!(rebase_map.len(), 0);
|
|
}
|
|
|
|
#[test]
|
|
fn test_rebase_descendants_divergent_rewrite() {
|
|
// Test rebasing descendants when one commit was rewritten to several other
|
|
// commits. There are many additional tests of this functionality in
|
|
// `test_rewrite.rs`.
|
|
let settings = testutils::user_settings();
|
|
let test_repo = TestRepo::init();
|
|
let repo = &test_repo.repo;
|
|
|
|
let mut tx = repo.start_transaction(&settings);
|
|
let mut graph_builder = CommitGraphBuilder::new(&settings, tx.mut_repo());
|
|
let commit1 = graph_builder.initial_commit();
|
|
let commit2 = graph_builder.commit_with_parents(&[&commit1]);
|
|
let _commit3 = graph_builder.commit_with_parents(&[&commit2]);
|
|
let repo = tx.commit("test");
|
|
|
|
let mut tx = repo.start_transaction(&settings);
|
|
let mut_repo = tx.mut_repo();
|
|
let mut graph_builder = CommitGraphBuilder::new(&settings, mut_repo);
|
|
let commit4 = graph_builder.commit_with_parents(&[&commit1]);
|
|
let commit5 = graph_builder.commit_with_parents(&[&commit1]);
|
|
mut_repo.set_divergent_rewrite(
|
|
commit2.id().clone(),
|
|
vec![commit4.id().clone(), commit5.id().clone()],
|
|
);
|
|
// Commit 3 does *not* get rebased because it's unclear if it should go onto
|
|
// commit 4 or commit 5
|
|
let rebase_map = tx
|
|
.mut_repo()
|
|
.rebase_descendants_return_map(&settings)
|
|
.unwrap();
|
|
assert!(rebase_map.is_empty());
|
|
}
|
|
|
|
#[test]
|
|
fn test_rename_remote() {
|
|
let settings = testutils::user_settings();
|
|
let test_repo = TestRepo::init();
|
|
let repo = &test_repo.repo;
|
|
let mut tx = repo.start_transaction(&settings);
|
|
let mut_repo = tx.mut_repo();
|
|
let commit = write_random_commit(mut_repo, &settings);
|
|
let remote_ref = RemoteRef {
|
|
target: RefTarget::normal(commit.id().clone()),
|
|
state: RemoteRefState::Tracking, // doesn't matter
|
|
};
|
|
mut_repo.set_remote_branch("main", "origin", remote_ref.clone());
|
|
mut_repo.rename_remote("origin", "upstream");
|
|
assert_eq!(mut_repo.get_remote_branch("main", "upstream"), remote_ref);
|
|
assert_eq!(
|
|
mut_repo.get_remote_branch("main", "origin"),
|
|
RemoteRef::absent()
|
|
);
|
|
}
|