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jj/tests/test_undo.rs

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// 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 crate::common::TestEnvironment;
pub mod common;
#[test]
fn test_undo_rewrite_with_child() {
// Test that if we undo an operation that rewrote some commit, any descendants
// after that will be rebased on top of the un-rewritten commit.
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, &["describe", "-m", "initial"]);
test_env.jj_cmd_success(&repo_path, &["describe", "-m", "modified"]);
let stdout = test_env.jj_cmd_success(&repo_path, &["op", "log"]);
let op_id_hex = stdout[3..15].to_string();
test_env.jj_cmd_success(&repo_path, &["new", "-m", "child"]);
let stdout = test_env.jj_cmd_success(&repo_path, &["log", "-T", "description"]);
insta::assert_snapshot!(stdout, @r###"
@ child
◉ modified
◉
"###);
test_env.jj_cmd_success(&repo_path, &["undo", &op_id_hex]);
// Since we undid the description-change, the child commit should now be on top
// of the initial commit
let stdout = test_env.jj_cmd_success(&repo_path, &["log", "-T", "description"]);
insta::assert_snapshot!(stdout, @r###"
@ child
◉ initial
◉
"###);
}
#[test]
fn test_git_push_undo() {
let test_env = TestEnvironment::default();
let git_repo_path = test_env.env_root().join("git-repo");
git2::Repository::init_bare(git_repo_path).unwrap();
test_env.jj_cmd_success(test_env.env_root(), &["git", "clone", "git-repo", "repo"]);
let repo_path = test_env.env_root().join("repo");
test_env.advance_test_rng_seed_to_multiple_of(100_000);
test_env.jj_cmd_success(&repo_path, &["branch", "create", "main"]);
test_env.jj_cmd_success(&repo_path, &["describe", "-m", "AA"]);
test_env.jj_cmd_success(&repo_path, &["git", "push"]);
test_env.advance_test_rng_seed_to_multiple_of(100_000);
test_env.jj_cmd_success(&repo_path, &["describe", "-m", "BB"]);
// Refs at this point look as follows (-- means no ref)
// | jj refs | jj's | git
// | | git | repo
// | |tracking|
// ------------------------------------------
// local `main` | BB | -- | --
// remote-tracking | AA | AA | AA
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
main: 8c05de152218 BB
@origin (ahead by 1 commits, behind by 1 commits): 0cffb6146141 AA
"###);
let pre_push_opid = current_operation_id(&test_env, &repo_path);
test_env.jj_cmd_success(&repo_path, &["git", "push"]);
// | jj refs | jj's | git
// | | git | repo
// | |tracking|
// ------------------------------------------
// local `main` | BB | -- | --
// remote-tracking | BB | BB | BB
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
main: 8c05de152218 BB
"###);
// Undo the push
test_env.jj_cmd_success(&repo_path, &["op", "restore", &pre_push_opid]);
// | jj refs | jj's | git
// | | git | repo
// | |tracking|
// ------------------------------------------
// local `main` | BB | -- | --
// remote-tracking | AA | AA | BB
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
main: 8c05de152218 BB
@origin (ahead by 1 commits, behind by 1 commits): 0cffb6146141 AA
"###);
test_env.advance_test_rng_seed_to_multiple_of(100_000);
test_env.jj_cmd_success(&repo_path, &["describe", "-m", "CC"]);
test_env.jj_cmd_success(&repo_path, &["git", "fetch"]);
// TODO: The user would probably not expect a conflict here. It currently is
// because the undo made us forget that the remote was at v2, so the fetch
// made us think it updated from v1 to v2 (instead of the no-op it could
// have been).
//
// One option to solve this would be to have undo not restore remote-tracking
// branches, but that also has undersired consequences: the second fetch in `jj
// git fetch && jj undo && jj git fetch` would become a no-op.
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
main (conflicted):
- 0cffb6146141 AA
+ 0a3e99f08a48 CC
+ 8c05de152218 BB
@origin (behind by 1 commits): 8c05de152218 BB
"###);
}
/// This test is identical to the previous one, except for one additional
/// import. It demonstrates that this changes the outcome.
#[test]
fn test_git_push_undo_with_import() {
let test_env = TestEnvironment::default();
let git_repo_path = test_env.env_root().join("git-repo");
git2::Repository::init_bare(git_repo_path).unwrap();
test_env.jj_cmd_success(test_env.env_root(), &["git", "clone", "git-repo", "repo"]);
let repo_path = test_env.env_root().join("repo");
test_env.advance_test_rng_seed_to_multiple_of(100_000);
test_env.jj_cmd_success(&repo_path, &["branch", "create", "main"]);
test_env.jj_cmd_success(&repo_path, &["describe", "-m", "AA"]);
test_env.jj_cmd_success(&repo_path, &["git", "push"]);
test_env.advance_test_rng_seed_to_multiple_of(100_000);
test_env.jj_cmd_success(&repo_path, &["describe", "-m", "BB"]);
// Refs at this point look as follows (-- means no ref)
// | jj refs | jj's | git
// | | git | repo
// | |tracking|
// ------------------------------------------
// local `main` | BB | -- | --
// remote-tracking | AA | AA | AA
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
main: 8c05de152218 BB
@origin (ahead by 1 commits, behind by 1 commits): 0cffb6146141 AA
"###);
let pre_push_opid = current_operation_id(&test_env, &repo_path);
test_env.jj_cmd_success(&repo_path, &["git", "push"]);
// | jj refs | jj's | git
// | | git | repo
// | |tracking|
// ------------------------------------------
// local `main` | BB | -- | --
// remote-tracking | BB | BB | BB
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
main: 8c05de152218 BB
"###);
// Undo the push
test_env.jj_cmd_success(&repo_path, &["op", "restore", &pre_push_opid]);
// | jj refs | jj's | git
// | | git | repo
// | |tracking|
// ------------------------------------------
// local `main` | BB | -- | --
// remote-tracking | AA | AA | BB
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
main: 8c05de152218 BB
@origin (ahead by 1 commits, behind by 1 commits): 0cffb6146141 AA
"###);
// PROBLEM: inserting this import changes the outcome compared to previous test
// TODO: decide if this is the better behavior, and whether import of
// remote-tracking branches should happen on every operation.
test_env.jj_cmd_success(&repo_path, &["git", "import"]);
// | jj refs | jj's | git
// | | git | repo
// | |tracking|
// ------------------------------------------
// local `main` | BB | -- | --
// remote-tracking | BB | BB | BB
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
main: 8c05de152218 BB
"###);
test_env.advance_test_rng_seed_to_multiple_of(100_000);
test_env.jj_cmd_success(&repo_path, &["describe", "-m", "CC"]);
test_env.jj_cmd_success(&repo_path, &["git", "fetch"]);
// There is not a conflict. This seems like a good outcome; undoing `git push`
// was essentially a no-op.
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
main: 0a3e99f08a48 CC
@origin (ahead by 1 commits, behind by 1 commits): 8c05de152218 BB
"###);
}
// This test is currently *identical* to `test_git_push_undo` except the repo
// it's operating it is colocated.
#[test]
fn test_git_push_undo_colocated() {
let test_env = TestEnvironment::default();
let git_repo_path = test_env.env_root().join("git-repo");
git2::Repository::init_bare(git_repo_path.clone()).unwrap();
let repo_path = test_env.env_root().join("clone");
git2::Repository::clone(git_repo_path.to_str().unwrap(), &repo_path).unwrap();
test_env.jj_cmd_success(&repo_path, &["init", "--git-repo=."]);
test_env.advance_test_rng_seed_to_multiple_of(100_000);
test_env.jj_cmd_success(&repo_path, &["branch", "create", "main"]);
test_env.jj_cmd_success(&repo_path, &["describe", "-m", "AA"]);
test_env.jj_cmd_success(&repo_path, &["git", "push"]);
test_env.advance_test_rng_seed_to_multiple_of(100_000);
test_env.jj_cmd_success(&repo_path, &["describe", "-m", "BB"]);
// Refs at this point look as follows (-- means no ref)
// | jj refs | jj's | git
// | | git | repo
// | |tracking|
// ------------------------------------------
// local `main` | BB | BB | BB
// remote-tracking | AA | AA | AA
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
main: 8c05de152218 BB
@origin (ahead by 1 commits, behind by 1 commits): 0cffb6146141 AA
"###);
let pre_push_opid = current_operation_id(&test_env, &repo_path);
test_env.jj_cmd_success(&repo_path, &["git", "push"]);
// | jj refs | jj's | git
// | | git | repo
// | |tracking|
// ------------------------------------------
// local `main` | BB | BB | BB
// remote-tracking | BB | BB | BB
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
main: 8c05de152218 BB
"###);
// Undo the push
test_env.jj_cmd_success(&repo_path, &["op", "restore", &pre_push_opid]);
// === Before auto-export ====
// | jj refs | jj's | git
// | | git | repo
// | |tracking|
// ------------------------------------------
// local `main` | BB | BB | BB
// remote-tracking | AA | BB | BB
// === After automatic `jj git export` ====
// | jj refs | jj's | git
// | | git | repo
// | |tracking|
// ------------------------------------------
// local `main` | BB | BB | BB
// remote-tracking | AA | AA | AA
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
main: 8c05de152218 BB
@origin (ahead by 1 commits, behind by 1 commits): 0cffb6146141 AA
"###);
test_env.advance_test_rng_seed_to_multiple_of(100_000);
test_env.jj_cmd_success(&repo_path, &["describe", "-m", "CC"]);
test_env.jj_cmd_success(&repo_path, &["git", "fetch"]);
// We have the same conflict as `test_git_push_undo`. TODO: why did we get the
// same result in a seemingly different way?
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
main (conflicted):
- 0cffb6146141 AA
+ 0a3e99f08a48 CC
+ 8c05de152218 BB
@git (behind by 1 commits): 0a3e99f08a48 CC
@origin (behind by 1 commits): 8c05de152218 BB
"###);
}
// This test is currently *identical* to `test_git_push_undo` except
// both the git_refs and the remote-tracking branches are preserved by undo.
// TODO: Investigate the different outcome
#[test]
fn test_git_push_undo_repo_only() {
let test_env = TestEnvironment::default();
let git_repo_path = test_env.env_root().join("git-repo");
git2::Repository::init_bare(git_repo_path).unwrap();
test_env.jj_cmd_success(test_env.env_root(), &["git", "clone", "git-repo", "repo"]);
let repo_path = test_env.env_root().join("repo");
test_env.advance_test_rng_seed_to_multiple_of(100_000);
test_env.jj_cmd_success(&repo_path, &["branch", "create", "main"]);
test_env.jj_cmd_success(&repo_path, &["describe", "-m", "AA"]);
test_env.jj_cmd_success(&repo_path, &["git", "push"]);
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
main: 0cffb6146141 AA
"###);
test_env.advance_test_rng_seed_to_multiple_of(100_000);
test_env.jj_cmd_success(&repo_path, &["describe", "-m", "BB"]);
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
main: 8c05de152218 BB
@origin (ahead by 1 commits, behind by 1 commits): 0cffb6146141 AA
"###);
let pre_push_opid = current_operation_id(&test_env, &repo_path);
test_env.jj_cmd_success(&repo_path, &["git", "push"]);
// Undo the push, but keep both the git_refs and the remote-tracking branches
test_env.jj_cmd_success(
&repo_path,
&["op", "restore", "--what=repo", &pre_push_opid],
);
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
main: 8c05de152218 BB
"###);
test_env.advance_test_rng_seed_to_multiple_of(100_000);
test_env.jj_cmd_success(&repo_path, &["describe", "-m", "CC"]);
test_env.jj_cmd_success(&repo_path, &["git", "fetch"]);
// This currently gives an identical result to `test_git_push_undo_import`.
insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
main: 0a3e99f08a48 CC
@origin (ahead by 1 commits, behind by 1 commits): 8c05de152218 BB
"###);
}
fn current_operation_id(test_env: &TestEnvironment, repo_path: &Path) -> String {
let mut id = test_env.jj_cmd_success(repo_path, &["debug", "operation", "--display=id"]);
let len_trimmed = id.trim_end().len();
id.truncate(len_trimmed);
id
}
fn get_branch_output(test_env: &TestEnvironment, repo_path: &Path) -> String {
test_env.jj_cmd_success(repo_path, &["branch", "list"])
}
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