jj/cli/tests/test_git_import_export.rs
2023-08-22 17:39:56 -07:00

285 lines
11 KiB
Rust

// Copyright 2022 The Jujutsu Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use std::path::Path;
use itertools::Itertools as _;
use jj_lib::backend::{CommitId, ObjectId as _};
use crate::common::TestEnvironment;
pub mod common;
#[test]
fn test_resolution_of_git_tracking_branches() {
let test_env = TestEnvironment::default();
test_env.jj_cmd_success(test_env.env_root(), &["init", "repo", "--git"]);
let repo_path = test_env.env_root().join("repo");
test_env.jj_cmd_success(&repo_path, &["branch", "create", "main"]);
test_env.jj_cmd_success(&repo_path, &["describe", "-r", "main", "-m", "old_message"]);
// Create local-git tracking branch
let stdout = test_env.jj_cmd_success(&repo_path, &["git", "export"]);
insta::assert_snapshot!(stdout, @"");
// Move the local branch somewhere else
test_env.jj_cmd_success(&repo_path, &["describe", "-r", "main", "-m", "new_message"]);
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
main: qpvuntsm 3af37026 (empty) new_message
@git (ahead by 1 commits, behind by 1 commits): qpvuntsm 16d541ca (empty) old_message
"###);
// Test that we can address both revisions
let stdout = test_env.jj_cmd_success(
&repo_path,
&[
"log",
"-r=main",
"-T",
r#"commit_id ++ " " ++ description"#,
"--no-graph",
],
);
insta::assert_snapshot!(stdout, @r###"
3af370264cdcbba791762f8ef6bc79b456dcbf3b new_message
"###);
let stdout = test_env.jj_cmd_success(
&repo_path,
&[
"log",
"-r=main@git",
"-T",
r#"commit_id ++ " " ++ description"#,
"--no-graph",
],
);
insta::assert_snapshot!(stdout, @r###"
16d541ca40f42baf2dea41aa61a0b5f1cbf1f91b old_message
"###);
}
#[test]
fn test_git_export_conflicting_git_refs() {
let test_env = TestEnvironment::default();
test_env.jj_cmd_success(test_env.env_root(), &["init", "repo", "--git"]);
let repo_path = test_env.env_root().join("repo");
test_env.jj_cmd_success(&repo_path, &["branch", "create", "main"]);
test_env.jj_cmd_success(&repo_path, &["branch", "create", "main/sub"]);
let (stdout, stderr) = test_env.jj_cmd_ok(&repo_path, &["git", "export"]);
insta::assert_snapshot!(stdout, @"");
insta::assert_snapshot!(stderr, @r###"
Failed to export some branches:
main/sub
Hint: Git doesn't allow a branch name that looks like a parent directory of
another (e.g. `foo` and `foo/bar`). Try to rename the branches that failed to
export or their "parent" branches.
"###);
}
#[test]
fn test_git_export_undo() {
let test_env = TestEnvironment::default();
test_env.jj_cmd_success(test_env.env_root(), &["init", "repo", "--git"]);
let repo_path = test_env.env_root().join("repo");
let git_repo = git2::Repository::open(repo_path.join(".jj/repo/store/git")).unwrap();
test_env.jj_cmd_success(&repo_path, &["branch", "create", "a"]);
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
a: qpvuntsm 230dd059 (empty) (no description set)
"###);
insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["git", "export"]), @"");
// "git export" can't be undone.
insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["op", "undo"]), @r###"
"###);
insta::assert_debug_snapshot!(get_git_repo_refs(&git_repo), @r###"
[
(
"refs/heads/a",
CommitId(
"230dd059e1b059aefc0da06a2e5a7dbf22362f22",
),
),
]
"###);
// This would re-export branch "a" as the internal state has been rolled back.
// It might be better to preserve the state, and say "Nothing changed" here.
insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["git", "export"]), @"");
}
#[test]
fn test_git_import_undo() {
let test_env = TestEnvironment::default();
test_env.jj_cmd_success(test_env.env_root(), &["init", "repo", "--git"]);
let repo_path = test_env.env_root().join("repo");
let git_repo = git2::Repository::open(repo_path.join(".jj/repo/store/git")).unwrap();
// Create branch "a" in git repo
let commit_id =
test_env.jj_cmd_success(&repo_path, &["log", "-Tcommit_id", "--no-graph", "-r@"]);
let commit = git_repo
.find_commit(git2::Oid::from_str(&commit_id).unwrap())
.unwrap();
git_repo.branch("a", &commit, true).unwrap();
// Initial state we will return to after `undo`. There are no branches.
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @"");
let base_operation_id = test_env.current_operation_id(&repo_path);
insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["git", "import"]), @"");
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
a: qpvuntsm 230dd059 (empty) (no description set)
"###);
// "git import" can be undone by default in non-colocated repositories.
let stdout = test_env.jj_cmd_success(&repo_path, &["op", "restore", &base_operation_id]);
insta::assert_snapshot!(stdout, @r###"
"###);
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @"");
// Try "git import" again, which should re-import the branch "a".
insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["git", "import"]), @"");
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
a: qpvuntsm 230dd059 (empty) (no description set)
"###);
// If we don't restore the git_refs, undoing the import removes the local branch
// but makes a following import a no-op.
let stdout = test_env.jj_cmd_success(
&repo_path,
&[
"op",
"restore",
&base_operation_id,
"--what=repo",
"--what=remote-tracking",
],
);
insta::assert_snapshot!(stdout, @r###"
"###);
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
a (forgotten)
@git: qpvuntsm 230dd059 (empty) (no description set)
(this branch will be deleted from the underlying Git repo on the next `jj git export`)
"###);
// Try "git import" again, which should *not* re-import the branch "a" and be a
// no-op.
insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["git", "import"]), @r###"
Nothing changed.
"###);
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
a (forgotten)
@git: qpvuntsm 230dd059 (empty) (no description set)
(this branch will be deleted from the underlying Git repo on the next `jj git export`)
"###);
// We can restore *only* the git refs to make an import re-import the branch
let stdout = test_env.jj_cmd_success(
&repo_path,
&["op", "restore", &base_operation_id, "--what=git-tracking"],
);
insta::assert_snapshot!(stdout, @r###"
"###);
// The git-tracking branch disappears.
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @"");
// Try "git import" again, which should again re-import the branch "a".
insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["git", "import"]), @"");
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
a: qpvuntsm 230dd059 (empty) (no description set)
"###);
}
#[test]
fn test_git_import_move_export_with_default_undo() {
let test_env = TestEnvironment::default();
test_env.jj_cmd_success(test_env.env_root(), &["init", "repo", "--git"]);
let repo_path = test_env.env_root().join("repo");
let git_repo = git2::Repository::open(repo_path.join(".jj/repo/store/git")).unwrap();
// Create branch "a" in git repo
let commit_id =
test_env.jj_cmd_success(&repo_path, &["log", "-Tcommit_id", "--no-graph", "-r@"]);
let commit = git_repo
.find_commit(git2::Oid::from_str(&commit_id).unwrap())
.unwrap();
git_repo.branch("a", &commit, true).unwrap();
// Initial state we will try to return to after `op restore`. There are no
// branches.
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @"");
let base_operation_id = test_env.current_operation_id(&repo_path);
insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["git", "import"]), @"");
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
a: qpvuntsm 230dd059 (empty) (no description set)
"###);
// Move branch "a" and export to git repo
test_env.jj_cmd_success(&repo_path, &["new"]);
test_env.jj_cmd_success(&repo_path, &["branch", "set", "a"]);
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
a: yqosqzyt 096dc80d (empty) (no description set)
@git (behind by 1 commits): qpvuntsm 230dd059 (empty) (no description set)
"###);
insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["git", "export"]), @"");
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
a: yqosqzyt 096dc80d (empty) (no description set)
"###);
// "git import" can be undone with the default `restore` behavior, as shown in
// the previous test. However, "git export" can't: the branches in the git
// repo stay where they were.
insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["op", "restore", &base_operation_id]), @r###"
Working copy now at: qpvuntsm 230dd059 (empty) (no description set)
Parent commit : zzzzzzzz 00000000 (empty) (no description set)
"###);
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @"");
insta::assert_debug_snapshot!(get_git_repo_refs(&git_repo), @r###"
[
(
"refs/heads/a",
CommitId(
"096dc80da67094fbaa6683e2a205dddffa31f9a8",
),
),
]
"###);
// The last branch "a" state is imported from git. No idea what's the most
// intuitive result here.
insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["git", "import"]), @"");
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
a: yqosqzyt 096dc80d (empty) (no description set)
"###);
}
fn get_branch_output(test_env: &TestEnvironment, repo_path: &Path) -> String {
test_env.jj_cmd_success(repo_path, &["branch", "list"])
}
fn get_git_repo_refs(git_repo: &git2::Repository) -> Vec<(String, CommitId)> {
let mut refs: Vec<_> = git_repo
.references()
.unwrap()
.filter_ok(|git_ref| git_ref.is_tag() || git_ref.is_branch() || git_ref.is_remote())
.filter_map_ok(|git_ref| {
let full_name = git_ref.name()?.to_owned();
let git_commit = git_ref.peel_to_commit().ok()?;
let commit_id = CommitId::from_bytes(git_commit.id().as_bytes());
Some((full_name, commit_id))
})
.try_collect()
.unwrap();
refs.sort();
refs
}