forked from mirrors/jj
26a554818a
When we export branches to Git, we didn't update our own record of Git's refs. This frequently led to spurious conflicts in these refs (e.g. #463). This is typically what happened: 1. Import a branch pointing to commit A from Git 2. Modify the branch in jj to point to commit B 3. Export the branch to Git 4. Update the branch in Git to point to commit C 5. Import refs from Git In step 3, we forgot to update our record of the branch in the repo view's `git_refs` field. That led to the import in step 5 to think that the branch moved from A to C in Git, which conflicts with the internal branch target of B. This commit fixes the bug by updating the refs in the `MutableRepo`. Closes #463.
1119 lines
38 KiB
Rust
1119 lines
38 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::path::PathBuf;
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use std::sync::Arc;
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use git2::Oid;
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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::git;
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use jujutsu_lib::git::{GitFetchError, GitPushError, GitRefUpdate};
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use jujutsu_lib::git_backend::GitBackend;
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use jujutsu_lib::op_store::{BranchTarget, RefTarget};
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use jujutsu_lib::repo::ReadonlyRepo;
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use jujutsu_lib::settings::UserSettings;
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use maplit::{btreemap, hashset};
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use tempfile::TempDir;
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use testutils::{create_random_commit, TestRepo};
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fn empty_git_commit<'r>(
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git_repo: &'r git2::Repository,
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ref_name: &str,
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parents: &[&git2::Commit],
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) -> git2::Commit<'r> {
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let signature = git2::Signature::now("Someone", "someone@example.com").unwrap();
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let empty_tree_id = Oid::from_str("4b825dc642cb6eb9a060e54bf8d69288fbee4904").unwrap();
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let empty_tree = git_repo.find_tree(empty_tree_id).unwrap();
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let oid = git_repo
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.commit(
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Some(ref_name),
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&signature,
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&signature,
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&format!("random commit {}", rand::random::<u32>()),
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&empty_tree,
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parents,
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)
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.unwrap();
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git_repo.find_commit(oid).unwrap()
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}
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fn jj_id(commit: &git2::Commit) -> CommitId {
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CommitId::from_bytes(commit.id().as_bytes())
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}
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fn git_id(commit: &Commit) -> Oid {
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Oid::from_bytes(commit.id().as_bytes()).unwrap()
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}
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#[test]
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fn test_import_refs() {
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init(true);
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let repo = &test_repo.repo;
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let git_repo = repo.store().git_repo().unwrap();
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let commit1 = empty_git_commit(&git_repo, "refs/heads/main", &[]);
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git_ref(&git_repo, "refs/remotes/origin/main", commit1.id());
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let commit2 = empty_git_commit(&git_repo, "refs/heads/main", &[&commit1]);
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let commit3 = empty_git_commit(&git_repo, "refs/heads/feature1", &[&commit2]);
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let commit4 = empty_git_commit(&git_repo, "refs/heads/feature2", &[&commit2]);
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let commit5 = empty_git_commit(&git_repo, "refs/tags/v1.0", &[&commit1]);
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// Should not be imported
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empty_git_commit(&git_repo, "refs/notes/x", &[&commit2]);
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empty_git_commit(&git_repo, "refs/remotes/origin/HEAD", &[&commit2]);
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git_repo.set_head("refs/heads/main").unwrap();
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let git_repo = repo.store().git_repo().unwrap();
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let mut tx = repo.start_transaction("test");
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git::import_refs(tx.mut_repo(), &git_repo).unwrap();
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tx.mut_repo().rebase_descendants(&settings).unwrap();
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let repo = tx.commit();
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let view = repo.view();
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let expected_heads = hashset! {
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jj_id(&commit3),
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jj_id(&commit4),
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jj_id(&commit5)
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};
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assert_eq!(*view.heads(), expected_heads);
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let expected_main_branch = BranchTarget {
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local_target: Some(RefTarget::Normal(jj_id(&commit2))),
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remote_targets: btreemap! {
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"origin".to_string() => RefTarget::Normal(jj_id(&commit1)),
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},
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};
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assert_eq!(
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view.branches().get("main"),
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Some(expected_main_branch).as_ref()
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);
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let expected_feature1_branch = BranchTarget {
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local_target: Some(RefTarget::Normal(jj_id(&commit3))),
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remote_targets: btreemap! {},
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};
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assert_eq!(
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view.branches().get("feature1"),
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Some(expected_feature1_branch).as_ref()
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);
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let expected_feature2_branch = BranchTarget {
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local_target: Some(RefTarget::Normal(jj_id(&commit4))),
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remote_targets: btreemap! {},
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};
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assert_eq!(
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view.branches().get("feature2"),
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Some(expected_feature2_branch).as_ref()
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);
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assert_eq!(
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view.tags().get("v1.0"),
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Some(RefTarget::Normal(jj_id(&commit5))).as_ref()
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);
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assert_eq!(view.git_refs().len(), 5);
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assert_eq!(
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view.git_refs().get("refs/heads/main"),
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Some(RefTarget::Normal(jj_id(&commit2))).as_ref()
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);
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assert_eq!(
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view.git_refs().get("refs/heads/feature1"),
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Some(RefTarget::Normal(jj_id(&commit3))).as_ref()
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);
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assert_eq!(
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view.git_refs().get("refs/heads/feature2"),
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Some(RefTarget::Normal(jj_id(&commit4))).as_ref()
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);
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assert_eq!(
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view.git_refs().get("refs/remotes/origin/main"),
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Some(RefTarget::Normal(jj_id(&commit1))).as_ref()
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);
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assert_eq!(
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view.git_refs().get("refs/tags/v1.0"),
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Some(RefTarget::Normal(jj_id(&commit5))).as_ref()
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);
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assert_eq!(view.git_head(), Some(jj_id(&commit2)));
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}
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#[test]
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fn test_import_refs_reimport() {
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let settings = testutils::user_settings();
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let test_workspace = TestRepo::init(true);
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let repo = &test_workspace.repo;
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let git_repo = repo.store().git_repo().unwrap();
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let commit1 = empty_git_commit(&git_repo, "refs/heads/main", &[]);
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git_ref(&git_repo, "refs/remotes/origin/main", commit1.id());
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let commit2 = empty_git_commit(&git_repo, "refs/heads/main", &[&commit1]);
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let _commit3 = empty_git_commit(&git_repo, "refs/heads/feature1", &[&commit2]);
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let commit4 = empty_git_commit(&git_repo, "refs/heads/feature2", &[&commit2]);
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let pgp_key_oid = git_repo.blob(b"my PGP key").unwrap();
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git_repo
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.reference("refs/tags/my-gpg-key", pgp_key_oid, false, "")
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.unwrap();
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let mut tx = repo.start_transaction("test");
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git::import_refs(tx.mut_repo(), &git_repo).unwrap();
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tx.mut_repo().rebase_descendants(&settings).unwrap();
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let repo = tx.commit();
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// Delete feature1 and rewrite feature2
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delete_git_ref(&git_repo, "refs/heads/feature1");
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delete_git_ref(&git_repo, "refs/heads/feature2");
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let commit5 = empty_git_commit(&git_repo, "refs/heads/feature2", &[&commit2]);
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// Also modify feature2 on the jj side
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let mut tx = repo.start_transaction("test");
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let commit6 = create_random_commit(&settings, &repo)
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.set_parents(vec![jj_id(&commit2)])
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.write_to_repo(tx.mut_repo());
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tx.mut_repo().set_local_branch(
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"feature2".to_string(),
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RefTarget::Normal(commit6.id().clone()),
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);
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let repo = tx.commit();
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let mut tx = repo.start_transaction("test");
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git::import_refs(tx.mut_repo(), &git_repo).unwrap();
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tx.mut_repo().rebase_descendants(&settings).unwrap();
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let repo = tx.commit();
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let view = repo.view();
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let expected_heads = hashset! {
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jj_id(&commit5),
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commit6.id().clone(),
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};
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assert_eq!(*view.heads(), expected_heads);
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assert_eq!(view.branches().len(), 2);
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let commit1_target = RefTarget::Normal(jj_id(&commit1));
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let commit2_target = RefTarget::Normal(jj_id(&commit2));
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let expected_main_branch = BranchTarget {
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local_target: Some(RefTarget::Normal(jj_id(&commit2))),
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remote_targets: btreemap! {
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"origin".to_string() => commit1_target.clone(),
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},
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};
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assert_eq!(
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view.branches().get("main"),
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Some(expected_main_branch).as_ref()
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);
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let expected_feature2_branch = BranchTarget {
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local_target: Some(RefTarget::Conflict {
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removes: vec![jj_id(&commit4)],
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adds: vec![commit6.id().clone(), jj_id(&commit5)],
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}),
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remote_targets: btreemap! {},
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};
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assert_eq!(
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view.branches().get("feature2"),
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Some(expected_feature2_branch).as_ref()
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);
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assert!(view.tags().is_empty());
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assert_eq!(view.git_refs().len(), 3);
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assert_eq!(
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view.git_refs().get("refs/heads/main"),
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Some(commit2_target).as_ref()
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);
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assert_eq!(
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view.git_refs().get("refs/remotes/origin/main"),
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Some(commit1_target).as_ref()
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);
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let commit5_target = RefTarget::Normal(jj_id(&commit5));
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assert_eq!(
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view.git_refs().get("refs/heads/feature2"),
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Some(commit5_target).as_ref()
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);
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}
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#[test]
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fn test_import_refs_reimport_head_removed() {
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// Test that re-importing refs doesn't cause a deleted head to come back
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init(true);
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let repo = &test_repo.repo;
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let git_repo = repo.store().git_repo().unwrap();
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let commit = empty_git_commit(&git_repo, "refs/heads/main", &[]);
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let mut tx = repo.start_transaction("test");
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git::import_refs(tx.mut_repo(), &git_repo).unwrap();
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tx.mut_repo().rebase_descendants(&settings).unwrap();
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let commit_id = jj_id(&commit);
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// Test the setup
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assert!(tx.mut_repo().view().heads().contains(&commit_id));
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// Remove the head and re-import
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tx.mut_repo().remove_head(&commit_id);
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git::import_refs(tx.mut_repo(), &git_repo).unwrap();
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tx.mut_repo().rebase_descendants(&settings).unwrap();
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assert!(!tx.mut_repo().view().heads().contains(&commit_id));
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}
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#[test]
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fn test_import_refs_reimport_git_head_counts() {
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// Test that if a branch is removed but the Git HEAD points to the commit (or a
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// descendant of it), we still keep it alive.
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init(true);
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let repo = &test_repo.repo;
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let git_repo = repo.store().git_repo().unwrap();
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let commit = empty_git_commit(&git_repo, "refs/heads/main", &[]);
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git_repo.set_head_detached(commit.id()).unwrap();
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let mut tx = repo.start_transaction("test");
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git::import_refs(tx.mut_repo(), &git_repo).unwrap();
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tx.mut_repo().rebase_descendants(&settings).unwrap();
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// Delete the branch and re-import. The commit should still be there since HEAD
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// points to it
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git_repo
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.find_reference("refs/heads/main")
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.unwrap()
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.delete()
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.unwrap();
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git::import_refs(tx.mut_repo(), &git_repo).unwrap();
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tx.mut_repo().rebase_descendants(&settings).unwrap();
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assert!(tx.mut_repo().view().heads().contains(&jj_id(&commit)));
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}
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#[test]
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fn test_import_refs_reimport_all_from_root_removed() {
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// Test that if a chain of commits all the way from the root gets unreferenced,
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// we abandon the whole stack, but not including the root commit.
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let settings = testutils::user_settings();
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let test_repo = TestRepo::init(true);
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let repo = &test_repo.repo;
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let git_repo = repo.store().git_repo().unwrap();
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let commit = empty_git_commit(&git_repo, "refs/heads/main", &[]);
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let mut tx = repo.start_transaction("test");
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git::import_refs(tx.mut_repo(), &git_repo).unwrap();
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tx.mut_repo().rebase_descendants(&settings).unwrap();
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// Test the setup
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assert!(tx.mut_repo().view().heads().contains(&jj_id(&commit)));
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// Remove all git refs and re-import
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git_repo
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.find_reference("refs/heads/main")
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.unwrap()
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.delete()
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.unwrap();
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git::import_refs(tx.mut_repo(), &git_repo).unwrap();
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tx.mut_repo().rebase_descendants(&settings).unwrap();
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assert!(!tx.mut_repo().view().heads().contains(&jj_id(&commit)));
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}
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fn git_ref(git_repo: &git2::Repository, name: &str, target: Oid) {
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git_repo.reference(name, target, true, "").unwrap();
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}
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fn delete_git_ref(git_repo: &git2::Repository, name: &str) {
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git_repo.find_reference(name).unwrap().delete().unwrap();
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}
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struct GitRepoData {
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settings: UserSettings,
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_temp_dir: TempDir,
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origin_repo: git2::Repository,
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git_repo: git2::Repository,
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repo: Arc<ReadonlyRepo>,
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}
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impl GitRepoData {
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fn create() -> Self {
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let settings = testutils::user_settings();
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let temp_dir = testutils::new_temp_dir();
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let origin_repo_dir = temp_dir.path().join("source");
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let origin_repo = git2::Repository::init_bare(&origin_repo_dir).unwrap();
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let git_repo_dir = temp_dir.path().join("git");
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let git_repo =
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git2::Repository::clone(origin_repo_dir.to_str().unwrap(), &git_repo_dir).unwrap();
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let jj_repo_dir = temp_dir.path().join("jj");
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std::fs::create_dir(&jj_repo_dir).unwrap();
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let repo = ReadonlyRepo::init(&settings, &jj_repo_dir, |store_path| {
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Box::new(GitBackend::init_external(store_path, &git_repo_dir))
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})
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.unwrap();
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Self {
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settings,
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_temp_dir: temp_dir,
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origin_repo,
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git_repo,
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repo,
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}
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}
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}
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#[test]
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fn test_import_refs_empty_git_repo() {
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let test_data = GitRepoData::create();
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let heads_before = test_data.repo.view().heads().clone();
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let mut tx = test_data.repo.start_transaction("test");
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git::import_refs(tx.mut_repo(), &test_data.git_repo).unwrap();
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tx.mut_repo()
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.rebase_descendants(&test_data.settings)
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.unwrap();
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let repo = tx.commit();
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assert_eq!(*repo.view().heads(), heads_before);
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assert_eq!(repo.view().branches().len(), 0);
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assert_eq!(repo.view().tags().len(), 0);
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assert_eq!(repo.view().git_refs().len(), 0);
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assert_eq!(repo.view().git_head(), None);
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}
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#[test]
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fn test_import_refs_detached_head() {
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let test_data = GitRepoData::create();
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let commit1 = empty_git_commit(&test_data.git_repo, "refs/heads/main", &[]);
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// Delete the reference. Check that the detached HEAD commit still gets added to
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// the set of heads
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test_data
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.git_repo
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.find_reference("refs/heads/main")
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.unwrap()
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.delete()
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.unwrap();
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test_data.git_repo.set_head_detached(commit1.id()).unwrap();
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let mut tx = test_data.repo.start_transaction("test");
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git::import_refs(tx.mut_repo(), &test_data.git_repo).unwrap();
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tx.mut_repo()
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.rebase_descendants(&test_data.settings)
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.unwrap();
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let repo = tx.commit();
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let expected_heads = hashset! { jj_id(&commit1) };
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assert_eq!(*repo.view().heads(), expected_heads);
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assert_eq!(repo.view().git_refs().len(), 0);
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assert_eq!(repo.view().git_head(), Some(jj_id(&commit1)));
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}
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|
|
#[test]
|
|
fn test_export_refs_no_detach() {
|
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// When exporting the branch that's current checked out, don't detach HEAD if
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// the target already matches
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let test_data = GitRepoData::create();
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let git_repo = test_data.git_repo;
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let commit1 = empty_git_commit(&git_repo, "refs/heads/main", &[]);
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git_repo.set_head("refs/heads/main").unwrap();
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let mut tx = test_data.repo.start_transaction("test");
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let mut_repo = tx.mut_repo();
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git::import_refs(mut_repo, &git_repo).unwrap();
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mut_repo.rebase_descendants(&test_data.settings).unwrap();
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// Do an initial export to make sure `main` is considered
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assert_eq!(git::export_refs(mut_repo, &git_repo), Ok(()));
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assert_eq!(
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mut_repo.get_git_ref("refs/heads/main"),
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Some(RefTarget::Normal(jj_id(&commit1)))
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);
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assert_eq!(git_repo.head().unwrap().name(), Some("refs/heads/main"));
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assert_eq!(
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git_repo.find_reference("refs/heads/main").unwrap().target(),
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Some(commit1.id())
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);
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}
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|
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#[test]
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|
fn test_export_refs_no_op() {
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// Nothing changes on the git side if nothing changed on the jj side
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let test_data = GitRepoData::create();
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let git_repo = test_data.git_repo;
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let commit1 = empty_git_commit(&git_repo, "refs/heads/main", &[]);
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git_repo.set_head("refs/heads/main").unwrap();
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let mut tx = test_data.repo.start_transaction("test");
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let mut_repo = tx.mut_repo();
|
|
git::import_refs(mut_repo, &git_repo).unwrap();
|
|
mut_repo.rebase_descendants(&test_data.settings).unwrap();
|
|
|
|
assert_eq!(git::export_refs(mut_repo, &git_repo), Ok(()));
|
|
// The export should be a no-op since nothing changed on the jj side since last
|
|
// export
|
|
assert_eq!(git::export_refs(mut_repo, &git_repo), Ok(()));
|
|
assert_eq!(
|
|
mut_repo.get_git_ref("refs/heads/main"),
|
|
Some(RefTarget::Normal(jj_id(&commit1)))
|
|
);
|
|
assert_eq!(git_repo.head().unwrap().name(), Some("refs/heads/main"));
|
|
assert_eq!(
|
|
git_repo.find_reference("refs/heads/main").unwrap().target(),
|
|
Some(commit1.id())
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_export_refs_branch_changed() {
|
|
// We can export a change to a branch
|
|
let test_data = GitRepoData::create();
|
|
let git_repo = test_data.git_repo;
|
|
let commit = empty_git_commit(&git_repo, "refs/heads/main", &[]);
|
|
git_repo
|
|
.reference("refs/heads/feature", commit.id(), false, "test")
|
|
.unwrap();
|
|
git_repo
|
|
.reference("refs/heads/delete-me", commit.id(), false, "test")
|
|
.unwrap();
|
|
git_repo.set_head("refs/heads/feature").unwrap();
|
|
|
|
let mut tx = test_data.repo.start_transaction("test");
|
|
let mut_repo = tx.mut_repo();
|
|
git::import_refs(mut_repo, &git_repo).unwrap();
|
|
mut_repo.rebase_descendants(&test_data.settings).unwrap();
|
|
assert_eq!(git::export_refs(mut_repo, &git_repo), Ok(()));
|
|
|
|
let new_commit = create_random_commit(&test_data.settings, &test_data.repo)
|
|
.set_parents(vec![jj_id(&commit)])
|
|
.write_to_repo(mut_repo);
|
|
mut_repo.set_local_branch(
|
|
"main".to_string(),
|
|
RefTarget::Normal(new_commit.id().clone()),
|
|
);
|
|
mut_repo.remove_local_branch("delete-me");
|
|
assert_eq!(git::export_refs(mut_repo, &git_repo), Ok(()));
|
|
assert_eq!(
|
|
mut_repo.get_git_ref("refs/heads/main"),
|
|
Some(RefTarget::Normal(new_commit.id().clone()))
|
|
);
|
|
assert_eq!(mut_repo.get_git_ref("refs/heads/delete-me"), None);
|
|
assert_eq!(
|
|
git_repo
|
|
.find_reference("refs/heads/main")
|
|
.unwrap()
|
|
.peel_to_commit()
|
|
.unwrap()
|
|
.id(),
|
|
git_id(&new_commit)
|
|
);
|
|
assert!(git_repo.find_reference("refs/heads/delete-me").is_err());
|
|
// HEAD should be unchanged since its target branch didn't change
|
|
assert_eq!(git_repo.head().unwrap().name(), Some("refs/heads/feature"));
|
|
}
|
|
|
|
#[test]
|
|
fn test_export_refs_current_branch_changed() {
|
|
// If we update a branch that is checked out in the git repo, HEAD gets detached
|
|
let test_data = GitRepoData::create();
|
|
let git_repo = test_data.git_repo;
|
|
let commit1 = empty_git_commit(&git_repo, "refs/heads/main", &[]);
|
|
git_repo.set_head("refs/heads/main").unwrap();
|
|
let mut tx = test_data.repo.start_transaction("test");
|
|
let mut_repo = tx.mut_repo();
|
|
git::import_refs(mut_repo, &git_repo).unwrap();
|
|
mut_repo.rebase_descendants(&test_data.settings).unwrap();
|
|
assert_eq!(git::export_refs(mut_repo, &git_repo), Ok(()));
|
|
|
|
let new_commit = create_random_commit(&test_data.settings, &test_data.repo)
|
|
.set_parents(vec![jj_id(&commit1)])
|
|
.write_to_repo(mut_repo);
|
|
mut_repo.set_local_branch(
|
|
"main".to_string(),
|
|
RefTarget::Normal(new_commit.id().clone()),
|
|
);
|
|
assert_eq!(git::export_refs(mut_repo, &git_repo), Ok(()));
|
|
assert_eq!(
|
|
mut_repo.get_git_ref("refs/heads/main"),
|
|
Some(RefTarget::Normal(new_commit.id().clone()))
|
|
);
|
|
assert_eq!(
|
|
git_repo
|
|
.find_reference("refs/heads/main")
|
|
.unwrap()
|
|
.peel_to_commit()
|
|
.unwrap()
|
|
.id(),
|
|
git_id(&new_commit)
|
|
);
|
|
assert!(git_repo.head_detached().unwrap());
|
|
}
|
|
|
|
#[test]
|
|
fn test_export_refs_unborn_git_branch() {
|
|
// Can export to an empty Git repo (we can handle Git's "unborn branch" state)
|
|
let test_data = GitRepoData::create();
|
|
let git_repo = test_data.git_repo;
|
|
git_repo.set_head("refs/heads/main").unwrap();
|
|
let mut tx = test_data.repo.start_transaction("test");
|
|
let mut_repo = tx.mut_repo();
|
|
git::import_refs(mut_repo, &git_repo).unwrap();
|
|
mut_repo.rebase_descendants(&test_data.settings).unwrap();
|
|
assert_eq!(git::export_refs(mut_repo, &git_repo), Ok(()));
|
|
|
|
let new_commit =
|
|
create_random_commit(&test_data.settings, &test_data.repo).write_to_repo(mut_repo);
|
|
mut_repo.set_local_branch(
|
|
"main".to_string(),
|
|
RefTarget::Normal(new_commit.id().clone()),
|
|
);
|
|
assert_eq!(git::export_refs(mut_repo, &git_repo), Ok(()));
|
|
assert_eq!(
|
|
mut_repo.get_git_ref("refs/heads/main"),
|
|
Some(RefTarget::Normal(new_commit.id().clone()))
|
|
);
|
|
assert_eq!(
|
|
git_repo
|
|
.find_reference("refs/heads/main")
|
|
.unwrap()
|
|
.peel_to_commit()
|
|
.unwrap()
|
|
.id(),
|
|
git_id(&new_commit)
|
|
);
|
|
// It's weird that the head is still pointing to refs/heads/main, but
|
|
// it doesn't seem that Git lets you be on an "unborn branch" while
|
|
// also being in a "detached HEAD" state.
|
|
assert!(!git_repo.head_detached().unwrap());
|
|
}
|
|
|
|
#[test]
|
|
fn test_export_import_sequence() {
|
|
// Import a branch pointing to A, modify it in jj to point to B, export it,
|
|
// modify it in git to point to C, then import it again. There should be no
|
|
// conflict.
|
|
let test_data = GitRepoData::create();
|
|
let git_repo = test_data.git_repo;
|
|
let mut tx = test_data.repo.start_transaction("test");
|
|
let mut_repo = tx.mut_repo();
|
|
let commit_a =
|
|
create_random_commit(&test_data.settings, &test_data.repo).write_to_repo(mut_repo);
|
|
let commit_b =
|
|
create_random_commit(&test_data.settings, &test_data.repo).write_to_repo(mut_repo);
|
|
let commit_c =
|
|
create_random_commit(&test_data.settings, &test_data.repo).write_to_repo(mut_repo);
|
|
|
|
// Import the branch pointing to A
|
|
git_repo
|
|
.reference("refs/heads/main", git_id(&commit_a), true, "test")
|
|
.unwrap();
|
|
git::import_refs(mut_repo, &git_repo).unwrap();
|
|
assert_eq!(
|
|
mut_repo.get_git_ref("refs/heads/main"),
|
|
Some(RefTarget::Normal(commit_a.id().clone()))
|
|
);
|
|
|
|
// Modify the branch in jj to point to B
|
|
mut_repo.set_local_branch("main".to_string(), RefTarget::Normal(commit_b.id().clone()));
|
|
|
|
// Export the branch to git
|
|
assert_eq!(git::export_refs(mut_repo, &git_repo), Ok(()));
|
|
assert_eq!(
|
|
mut_repo.get_git_ref("refs/heads/main"),
|
|
Some(RefTarget::Normal(commit_b.id().clone()))
|
|
);
|
|
|
|
// Modify the branch in git to point to C
|
|
git_repo
|
|
.reference("refs/heads/main", git_id(&commit_c), true, "test")
|
|
.unwrap();
|
|
|
|
// Import from git
|
|
git::import_refs(mut_repo, &git_repo).unwrap();
|
|
assert_eq!(
|
|
mut_repo.get_git_ref("refs/heads/main"),
|
|
Some(RefTarget::Normal(commit_c.id().clone()))
|
|
);
|
|
assert_eq!(
|
|
mut_repo.view().get_local_branch("main"),
|
|
Some(RefTarget::Normal(commit_c.id().clone()))
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_export_conflicts() {
|
|
// We skip export of conflicted branches
|
|
let test_data = GitRepoData::create();
|
|
let git_repo = test_data.git_repo;
|
|
let mut tx = test_data.repo.start_transaction("test");
|
|
let mut_repo = tx.mut_repo();
|
|
let commit_a =
|
|
create_random_commit(&test_data.settings, &test_data.repo).write_to_repo(mut_repo);
|
|
let commit_b =
|
|
create_random_commit(&test_data.settings, &test_data.repo).write_to_repo(mut_repo);
|
|
let commit_c =
|
|
create_random_commit(&test_data.settings, &test_data.repo).write_to_repo(mut_repo);
|
|
mut_repo.set_local_branch("main".to_string(), RefTarget::Normal(commit_a.id().clone()));
|
|
mut_repo.set_local_branch(
|
|
"feature".to_string(),
|
|
RefTarget::Normal(commit_a.id().clone()),
|
|
);
|
|
assert_eq!(git::export_refs(mut_repo, &git_repo), Ok(()));
|
|
|
|
// Create a conflict and export. It should not be exported, but other changes
|
|
// should be.
|
|
mut_repo.set_local_branch("main".to_string(), RefTarget::Normal(commit_b.id().clone()));
|
|
mut_repo.set_local_branch(
|
|
"feature".to_string(),
|
|
RefTarget::Conflict {
|
|
removes: vec![commit_a.id().clone()],
|
|
adds: vec![commit_b.id().clone(), commit_c.id().clone()],
|
|
},
|
|
);
|
|
assert_eq!(git::export_refs(mut_repo, &git_repo), Ok(()));
|
|
assert_eq!(
|
|
git_repo
|
|
.find_reference("refs/heads/feature")
|
|
.unwrap()
|
|
.target()
|
|
.unwrap(),
|
|
git_id(&commit_a)
|
|
);
|
|
assert_eq!(
|
|
git_repo
|
|
.find_reference("refs/heads/main")
|
|
.unwrap()
|
|
.target()
|
|
.unwrap(),
|
|
git_id(&commit_b)
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_init() {
|
|
let settings = testutils::user_settings();
|
|
let temp_dir = testutils::new_temp_dir();
|
|
let git_repo_dir = temp_dir.path().join("git");
|
|
let jj_repo_dir = temp_dir.path().join("jj");
|
|
let git_repo = git2::Repository::init_bare(&git_repo_dir).unwrap();
|
|
let initial_git_commit = empty_git_commit(&git_repo, "refs/heads/main", &[]);
|
|
std::fs::create_dir(&jj_repo_dir).unwrap();
|
|
let repo = ReadonlyRepo::init(&settings, &jj_repo_dir, |store_path| {
|
|
Box::new(GitBackend::init_external(store_path, &git_repo_dir))
|
|
})
|
|
.unwrap();
|
|
// The refs were *not* imported -- it's the caller's responsibility to import
|
|
// any refs they care about.
|
|
assert!(!repo.view().heads().contains(&jj_id(&initial_git_commit)));
|
|
}
|
|
|
|
#[test]
|
|
fn test_fetch_empty_repo() {
|
|
let test_data = GitRepoData::create();
|
|
|
|
let mut tx = test_data.repo.start_transaction("test");
|
|
let default_branch = git::fetch(
|
|
tx.mut_repo(),
|
|
&test_data.git_repo,
|
|
"origin",
|
|
git::RemoteCallbacks::default(),
|
|
)
|
|
.unwrap();
|
|
// No default branch and no refs
|
|
assert_eq!(default_branch, None);
|
|
assert_eq!(*tx.mut_repo().view().git_refs(), btreemap! {});
|
|
assert_eq!(*tx.mut_repo().view().branches(), btreemap! {});
|
|
}
|
|
|
|
#[test]
|
|
fn test_fetch_initial_commit() {
|
|
let test_data = GitRepoData::create();
|
|
let initial_git_commit = empty_git_commit(&test_data.origin_repo, "refs/heads/main", &[]);
|
|
|
|
let mut tx = test_data.repo.start_transaction("test");
|
|
let default_branch = git::fetch(
|
|
tx.mut_repo(),
|
|
&test_data.git_repo,
|
|
"origin",
|
|
git::RemoteCallbacks::default(),
|
|
)
|
|
.unwrap();
|
|
// No default branch because the origin repo's HEAD wasn't set
|
|
assert_eq!(default_branch, None);
|
|
let repo = tx.commit();
|
|
// The initial commit is visible after git::fetch().
|
|
let view = repo.view();
|
|
assert!(view.heads().contains(&jj_id(&initial_git_commit)));
|
|
let initial_commit_target = RefTarget::Normal(jj_id(&initial_git_commit));
|
|
assert_eq!(
|
|
*view.git_refs(),
|
|
btreemap! {
|
|
"refs/remotes/origin/main".to_string() => initial_commit_target.clone(),
|
|
}
|
|
);
|
|
assert_eq!(
|
|
*view.branches(),
|
|
btreemap! {
|
|
"main".to_string() => BranchTarget {
|
|
local_target: Some(initial_commit_target.clone()),
|
|
remote_targets: btreemap! {"origin".to_string() => initial_commit_target}
|
|
},
|
|
}
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_fetch_success() {
|
|
let mut test_data = GitRepoData::create();
|
|
let initial_git_commit = empty_git_commit(&test_data.origin_repo, "refs/heads/main", &[]);
|
|
|
|
let mut tx = test_data.repo.start_transaction("test");
|
|
git::fetch(
|
|
tx.mut_repo(),
|
|
&test_data.git_repo,
|
|
"origin",
|
|
git::RemoteCallbacks::default(),
|
|
)
|
|
.unwrap();
|
|
test_data.repo = tx.commit();
|
|
|
|
test_data.origin_repo.set_head("refs/heads/main").unwrap();
|
|
let new_git_commit = empty_git_commit(
|
|
&test_data.origin_repo,
|
|
"refs/heads/main",
|
|
&[&initial_git_commit],
|
|
);
|
|
|
|
let mut tx = test_data.repo.start_transaction("test");
|
|
let default_branch = git::fetch(
|
|
tx.mut_repo(),
|
|
&test_data.git_repo,
|
|
"origin",
|
|
git::RemoteCallbacks::default(),
|
|
)
|
|
.unwrap();
|
|
// The default branch is "main"
|
|
assert_eq!(default_branch, Some("main".to_string()));
|
|
let repo = tx.commit();
|
|
// The new commit is visible after we fetch again
|
|
let view = repo.view();
|
|
assert!(view.heads().contains(&jj_id(&new_git_commit)));
|
|
let new_commit_target = RefTarget::Normal(jj_id(&new_git_commit));
|
|
assert_eq!(
|
|
*view.git_refs(),
|
|
btreemap! {
|
|
"refs/remotes/origin/main".to_string() => new_commit_target.clone(),
|
|
}
|
|
);
|
|
assert_eq!(
|
|
*view.branches(),
|
|
btreemap! {
|
|
"main".to_string() => BranchTarget {
|
|
local_target: Some(new_commit_target.clone()),
|
|
remote_targets: btreemap! {"origin".to_string() => new_commit_target}
|
|
},
|
|
}
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_fetch_prune_deleted_ref() {
|
|
let test_data = GitRepoData::create();
|
|
empty_git_commit(&test_data.git_repo, "refs/heads/main", &[]);
|
|
|
|
let mut tx = test_data.repo.start_transaction("test");
|
|
git::fetch(
|
|
tx.mut_repo(),
|
|
&test_data.git_repo,
|
|
"origin",
|
|
git::RemoteCallbacks::default(),
|
|
)
|
|
.unwrap();
|
|
// Test the setup
|
|
assert!(tx.mut_repo().get_branch("main").is_some());
|
|
|
|
test_data
|
|
.git_repo
|
|
.find_reference("refs/heads/main")
|
|
.unwrap()
|
|
.delete()
|
|
.unwrap();
|
|
// After re-fetching, the branch should be deleted
|
|
git::fetch(
|
|
tx.mut_repo(),
|
|
&test_data.git_repo,
|
|
"origin",
|
|
git::RemoteCallbacks::default(),
|
|
)
|
|
.unwrap();
|
|
assert!(tx.mut_repo().get_branch("main").is_none());
|
|
}
|
|
|
|
#[test]
|
|
fn test_fetch_no_default_branch() {
|
|
let test_data = GitRepoData::create();
|
|
let initial_git_commit = empty_git_commit(&test_data.origin_repo, "refs/heads/main", &[]);
|
|
|
|
let mut tx = test_data.repo.start_transaction("test");
|
|
git::fetch(
|
|
tx.mut_repo(),
|
|
&test_data.git_repo,
|
|
"origin",
|
|
git::RemoteCallbacks::default(),
|
|
)
|
|
.unwrap();
|
|
|
|
empty_git_commit(
|
|
&test_data.origin_repo,
|
|
"refs/heads/main",
|
|
&[&initial_git_commit],
|
|
);
|
|
// It's actually not enough to have a detached HEAD, it also needs to point to a
|
|
// commit without a branch (that's possibly a bug in Git *and* libgit2), so
|
|
// we point it to initial_git_commit.
|
|
test_data
|
|
.origin_repo
|
|
.set_head_detached(initial_git_commit.id())
|
|
.unwrap();
|
|
|
|
let default_branch = git::fetch(
|
|
tx.mut_repo(),
|
|
&test_data.git_repo,
|
|
"origin",
|
|
git::RemoteCallbacks::default(),
|
|
)
|
|
.unwrap();
|
|
// There is no default branch
|
|
assert_eq!(default_branch, None);
|
|
}
|
|
|
|
#[test]
|
|
fn test_fetch_no_such_remote() {
|
|
let test_data = GitRepoData::create();
|
|
|
|
let mut tx = test_data.repo.start_transaction("test");
|
|
let result = git::fetch(
|
|
tx.mut_repo(),
|
|
&test_data.git_repo,
|
|
"invalid-remote",
|
|
git::RemoteCallbacks::default(),
|
|
);
|
|
assert!(matches!(result, Err(GitFetchError::NoSuchRemote(_))));
|
|
}
|
|
|
|
struct PushTestSetup {
|
|
source_repo_dir: PathBuf,
|
|
jj_repo: Arc<ReadonlyRepo>,
|
|
new_commit: Commit,
|
|
}
|
|
|
|
fn set_up_push_repos(settings: &UserSettings, temp_dir: &TempDir) -> PushTestSetup {
|
|
let source_repo_dir = temp_dir.path().join("source");
|
|
let clone_repo_dir = temp_dir.path().join("clone");
|
|
let jj_repo_dir = temp_dir.path().join("jj");
|
|
let source_repo = git2::Repository::init_bare(&source_repo_dir).unwrap();
|
|
let initial_git_commit = empty_git_commit(&source_repo, "refs/heads/main", &[]);
|
|
git2::Repository::clone(source_repo_dir.to_str().unwrap(), &clone_repo_dir).unwrap();
|
|
std::fs::create_dir(&jj_repo_dir).unwrap();
|
|
let jj_repo = ReadonlyRepo::init(settings, &jj_repo_dir, |store_path| {
|
|
Box::new(GitBackend::init_external(store_path, &clone_repo_dir))
|
|
})
|
|
.unwrap();
|
|
let mut tx = jj_repo.start_transaction("test");
|
|
let new_commit = create_random_commit(settings, &jj_repo)
|
|
.set_parents(vec![jj_id(&initial_git_commit)])
|
|
.write_to_repo(tx.mut_repo());
|
|
let jj_repo = tx.commit();
|
|
PushTestSetup {
|
|
source_repo_dir,
|
|
jj_repo,
|
|
new_commit,
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_push_updates_success() {
|
|
let settings = testutils::user_settings();
|
|
let temp_dir = testutils::new_temp_dir();
|
|
let setup = set_up_push_repos(&settings, &temp_dir);
|
|
let clone_repo = setup.jj_repo.store().git_repo().unwrap();
|
|
let result = git::push_updates(
|
|
&clone_repo,
|
|
"origin",
|
|
&[GitRefUpdate {
|
|
qualified_name: "refs/heads/main".to_string(),
|
|
force: false,
|
|
new_target: Some(setup.new_commit.id().clone()),
|
|
}],
|
|
git::RemoteCallbacks::default(),
|
|
);
|
|
assert_eq!(result, Ok(()));
|
|
|
|
// Check that the ref got updated in the source repo
|
|
let source_repo = git2::Repository::open(&setup.source_repo_dir).unwrap();
|
|
let new_target = source_repo
|
|
.find_reference("refs/heads/main")
|
|
.unwrap()
|
|
.target();
|
|
let new_oid = git_id(&setup.new_commit);
|
|
assert_eq!(new_target, Some(new_oid));
|
|
|
|
// Check that the ref got updated in the cloned repo. This just tests our
|
|
// assumptions about libgit2 because we want the refs/remotes/origin/main
|
|
// branch to be updated.
|
|
let new_target = clone_repo
|
|
.find_reference("refs/remotes/origin/main")
|
|
.unwrap()
|
|
.target();
|
|
assert_eq!(new_target, Some(new_oid));
|
|
}
|
|
|
|
#[test]
|
|
fn test_push_updates_deletion() {
|
|
let settings = testutils::user_settings();
|
|
let temp_dir = testutils::new_temp_dir();
|
|
let setup = set_up_push_repos(&settings, &temp_dir);
|
|
let clone_repo = setup.jj_repo.store().git_repo().unwrap();
|
|
|
|
let source_repo = git2::Repository::open(&setup.source_repo_dir).unwrap();
|
|
// Test the setup
|
|
assert!(source_repo.find_reference("refs/heads/main").is_ok());
|
|
|
|
let result = git::push_updates(
|
|
&setup.jj_repo.store().git_repo().unwrap(),
|
|
"origin",
|
|
&[GitRefUpdate {
|
|
qualified_name: "refs/heads/main".to_string(),
|
|
force: false,
|
|
new_target: None,
|
|
}],
|
|
git::RemoteCallbacks::default(),
|
|
);
|
|
assert_eq!(result, Ok(()));
|
|
|
|
// Check that the ref got deleted in the source repo
|
|
assert!(source_repo.find_reference("refs/heads/main").is_err());
|
|
|
|
// Check that the ref got deleted in the cloned repo. This just tests our
|
|
// assumptions about libgit2 because we want the refs/remotes/origin/main
|
|
// branch to be deleted.
|
|
assert!(clone_repo
|
|
.find_reference("refs/remotes/origin/main")
|
|
.is_err());
|
|
}
|
|
|
|
#[test]
|
|
fn test_push_updates_mixed_deletion_and_addition() {
|
|
let settings = testutils::user_settings();
|
|
let temp_dir = testutils::new_temp_dir();
|
|
let setup = set_up_push_repos(&settings, &temp_dir);
|
|
let clone_repo = setup.jj_repo.store().git_repo().unwrap();
|
|
let result = git::push_updates(
|
|
&clone_repo,
|
|
"origin",
|
|
&[
|
|
GitRefUpdate {
|
|
qualified_name: "refs/heads/main".to_string(),
|
|
force: false,
|
|
new_target: None,
|
|
},
|
|
GitRefUpdate {
|
|
qualified_name: "refs/heads/topic".to_string(),
|
|
force: false,
|
|
new_target: Some(setup.new_commit.id().clone()),
|
|
},
|
|
],
|
|
git::RemoteCallbacks::default(),
|
|
);
|
|
assert_eq!(result, Ok(()));
|
|
|
|
// Check that the topic ref got updated in the source repo
|
|
let source_repo = git2::Repository::open(&setup.source_repo_dir).unwrap();
|
|
let new_target = source_repo
|
|
.find_reference("refs/heads/topic")
|
|
.unwrap()
|
|
.target();
|
|
assert_eq!(new_target, Some(git_id(&setup.new_commit)));
|
|
|
|
// Check that the main ref got deleted in the source repo
|
|
assert!(source_repo.find_reference("refs/heads/main").is_err());
|
|
}
|
|
|
|
#[test]
|
|
fn test_push_updates_not_fast_forward() {
|
|
let settings = testutils::user_settings();
|
|
let temp_dir = testutils::new_temp_dir();
|
|
let mut setup = set_up_push_repos(&settings, &temp_dir);
|
|
let mut tx = setup.jj_repo.start_transaction("test");
|
|
let new_commit = create_random_commit(&settings, &setup.jj_repo).write_to_repo(tx.mut_repo());
|
|
setup.jj_repo = tx.commit();
|
|
let result = git::push_updates(
|
|
&setup.jj_repo.store().git_repo().unwrap(),
|
|
"origin",
|
|
&[GitRefUpdate {
|
|
qualified_name: "refs/heads/main".to_string(),
|
|
force: false,
|
|
new_target: Some(new_commit.id().clone()),
|
|
}],
|
|
git::RemoteCallbacks::default(),
|
|
);
|
|
assert_eq!(result, Err(GitPushError::NotFastForward));
|
|
}
|
|
|
|
#[test]
|
|
fn test_push_updates_not_fast_forward_with_force() {
|
|
let settings = testutils::user_settings();
|
|
let temp_dir = testutils::new_temp_dir();
|
|
let mut setup = set_up_push_repos(&settings, &temp_dir);
|
|
let mut tx = setup.jj_repo.start_transaction("test");
|
|
let new_commit = create_random_commit(&settings, &setup.jj_repo).write_to_repo(tx.mut_repo());
|
|
setup.jj_repo = tx.commit();
|
|
let result = git::push_updates(
|
|
&setup.jj_repo.store().git_repo().unwrap(),
|
|
"origin",
|
|
&[GitRefUpdate {
|
|
qualified_name: "refs/heads/main".to_string(),
|
|
force: true,
|
|
new_target: Some(new_commit.id().clone()),
|
|
}],
|
|
git::RemoteCallbacks::default(),
|
|
);
|
|
assert_eq!(result, Ok(()));
|
|
|
|
// Check that the ref got updated in the source repo
|
|
let source_repo = git2::Repository::open(&setup.source_repo_dir).unwrap();
|
|
let new_target = source_repo
|
|
.find_reference("refs/heads/main")
|
|
.unwrap()
|
|
.target();
|
|
assert_eq!(new_target, Some(git_id(&new_commit)));
|
|
}
|
|
|
|
#[test]
|
|
fn test_push_updates_no_such_remote() {
|
|
let settings = testutils::user_settings();
|
|
let temp_dir = testutils::new_temp_dir();
|
|
let setup = set_up_push_repos(&settings, &temp_dir);
|
|
let result = git::push_updates(
|
|
&setup.jj_repo.store().git_repo().unwrap(),
|
|
"invalid-remote",
|
|
&[GitRefUpdate {
|
|
qualified_name: "refs/heads/main".to_string(),
|
|
force: false,
|
|
new_target: Some(setup.new_commit.id().clone()),
|
|
}],
|
|
git::RemoteCallbacks::default(),
|
|
);
|
|
assert!(matches!(result, Err(GitPushError::NoSuchRemote(_))));
|
|
}
|
|
|
|
#[test]
|
|
fn test_push_updates_invalid_remote() {
|
|
let settings = testutils::user_settings();
|
|
let temp_dir = testutils::new_temp_dir();
|
|
let setup = set_up_push_repos(&settings, &temp_dir);
|
|
let result = git::push_updates(
|
|
&setup.jj_repo.store().git_repo().unwrap(),
|
|
"http://invalid-remote",
|
|
&[GitRefUpdate {
|
|
qualified_name: "refs/heads/main".to_string(),
|
|
force: false,
|
|
new_target: Some(setup.new_commit.id().clone()),
|
|
}],
|
|
git::RemoteCallbacks::default(),
|
|
);
|
|
assert!(matches!(result, Err(GitPushError::NoSuchRemote(_))));
|
|
}
|