forked from mirrors/jj
fb33620f9e
The original idea was similar to Mercurial's "topo" sorting, but it was bad at handling merge-heavy history. In order to render merges of topic branches nicely, we need to prioritize branches at merge point, not at fork point. OTOH, we do also want to place unmerged branches as close to the fork point as possible. This commit implements the former requirement, and the latter will be addressed by the next commit. I think this is similar to Git's sorting logic described in the following blog post. In our case, the in-degree walk can be dumb since topological order is guaranteed by the index. We keep HashSet<CommitId> instead of an in-degree integer value, which will be used in the next commit to resolve new heads as late as possible. https://github.blog/2022-08-30-gits-database-internals-ii-commit-history-queries/#topological-sorting Compared to Sapling's beautify_graph(), this is lazy, and can roughly preserve the index (or chronological) order. I tried beautify_graph() with prioritizing the @ commit, but the result seemed too aggressively reordered. Perhaps, for more complex history, beautify_graph() would produce a better result. For my wip branches (~30 branches, a couple of commits per branch), this works pretty well. #242
573 lines
17 KiB
Rust
573 lines
17 KiB
Rust
// Copyright 2022 The Jujutsu Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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use std::path::Path;
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use crate::common::TestEnvironment;
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pub mod common;
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fn create_commit(test_env: &TestEnvironment, repo_path: &Path, name: &str, parents: &[&str]) {
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if parents.is_empty() {
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test_env.jj_cmd_success(repo_path, &["new", "root", "-m", name]);
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} else {
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let mut args = vec!["new", "-m", name];
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args.extend(parents);
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test_env.jj_cmd_success(repo_path, &args);
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}
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std::fs::write(repo_path.join(name), format!("{name}\n")).unwrap();
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test_env.jj_cmd_success(repo_path, &["branch", "create", name]);
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}
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#[test]
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fn test_rebase_invalid() {
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let test_env = TestEnvironment::default();
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test_env.jj_cmd_success(test_env.env_root(), &["init", "repo", "--git"]);
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let repo_path = test_env.env_root().join("repo");
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create_commit(&test_env, &repo_path, "a", &[]);
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create_commit(&test_env, &repo_path, "b", &["a"]);
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// Missing destination
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let stderr = test_env.jj_cmd_cli_error(&repo_path, &["rebase"]);
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insta::assert_snapshot!(stderr, @r###"
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error: the following required arguments were not provided:
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--destination <DESTINATION>
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Usage: jj rebase --destination <DESTINATION>
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For more information, try '--help'.
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"###);
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// Both -r and -s
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let stderr =
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test_env.jj_cmd_cli_error(&repo_path, &["rebase", "-r", "a", "-s", "a", "-d", "b"]);
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insta::assert_snapshot!(stderr, @r###"
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error: the argument '--revision <REVISION>' cannot be used with '--source <SOURCE>'
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Usage: jj rebase --destination <DESTINATION> --revision <REVISION>
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For more information, try '--help'.
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"###);
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// Both -b and -s
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let stderr =
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test_env.jj_cmd_cli_error(&repo_path, &["rebase", "-b", "a", "-s", "a", "-d", "b"]);
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insta::assert_snapshot!(stderr, @r###"
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error: the argument '--branch <BRANCH>' cannot be used with '--source <SOURCE>'
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Usage: jj rebase --destination <DESTINATION> --branch <BRANCH>
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For more information, try '--help'.
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"###);
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// Rebase onto descendant with -r
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let stderr = test_env.jj_cmd_failure(&repo_path, &["rebase", "-r", "a", "-d", "b"]);
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insta::assert_snapshot!(stderr, @r###"
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Error: Cannot rebase 2443ea76b0b1 onto descendant 1394f625cbbd
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"###);
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// Rebase onto descendant with -s
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let stderr = test_env.jj_cmd_failure(&repo_path, &["rebase", "-s", "a", "-d", "b"]);
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insta::assert_snapshot!(stderr, @r###"
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Error: Cannot rebase 2443ea76b0b1 onto descendant 1394f625cbbd
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"###);
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}
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#[test]
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fn test_rebase_branch() {
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let test_env = TestEnvironment::default();
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test_env.jj_cmd_success(test_env.env_root(), &["init", "repo", "--git"]);
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let repo_path = test_env.env_root().join("repo");
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create_commit(&test_env, &repo_path, "a", &[]);
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create_commit(&test_env, &repo_path, "b", &["a"]);
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create_commit(&test_env, &repo_path, "c", &["b"]);
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create_commit(&test_env, &repo_path, "d", &["b"]);
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create_commit(&test_env, &repo_path, "e", &["a"]);
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// Test the setup
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insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
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@ e
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│ ◉ d
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│ │ ◉ c
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│ ├─╯
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│ ◉ b
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├─╯
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◉ a
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◉
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"###);
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let stdout = test_env.jj_cmd_success(&repo_path, &["rebase", "-b", "c", "-d", "e"]);
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insta::assert_snapshot!(stdout, @r###"
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Rebased 3 commits
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"###);
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insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
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◉ d
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│ ◉ c
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├─╯
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◉ b
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@ e
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◉ a
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◉
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"###);
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// Test rebasing multiple branches at once
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test_env.jj_cmd_success(&repo_path, &["undo"]);
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let stdout = test_env.jj_cmd_success(&repo_path, &["rebase", "-b=e", "-b=d", "-d=b"]);
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insta::assert_snapshot!(stdout, @r###"
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Rebased 2 commits
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Working copy now at: 9ca2a1544e5d e
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Parent commit : 1394f625cbbd b
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Added 1 files, modified 0 files, removed 0 files
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"###);
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insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
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◉ d
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│ @ e
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├─╯
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│ ◉ c
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├─╯
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◉ b
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◉ a
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◉
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"###);
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// Same test but with more than one revision per argument and same revision
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// repeated in more than one argument
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test_env.jj_cmd_success(&repo_path, &["undo"]);
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let stderr = test_env.jj_cmd_failure(&repo_path, &["rebase", "-b=e|d", "-b=d", "-d=b"]);
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insta::assert_snapshot!(stderr, @r###"
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Error: Revset "e|d" resolved to more than one revision
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Hint: The revset "e|d" resolved to these revisions:
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e52756c82985 e
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514fa6b265d4 d
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If this was intentional, specify the `--allow-large-revsets` argument
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"###);
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let stdout = test_env.jj_cmd_success(
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&repo_path,
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&["rebase", "-b=e|d", "-b=d", "-d=b", "--allow-large-revsets"],
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);
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insta::assert_snapshot!(stdout, @r###"
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Rebased 2 commits
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Working copy now at: 817e3fb0dc64 e
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Parent commit : 1394f625cbbd b
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Added 1 files, modified 0 files, removed 0 files
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"###);
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insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
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◉ d
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│ @ e
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├─╯
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│ ◉ c
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├─╯
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◉ b
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◉ a
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◉
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"###);
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}
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#[test]
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fn test_rebase_branch_with_merge() {
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let test_env = TestEnvironment::default();
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test_env.jj_cmd_success(test_env.env_root(), &["init", "repo", "--git"]);
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let repo_path = test_env.env_root().join("repo");
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create_commit(&test_env, &repo_path, "a", &[]);
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create_commit(&test_env, &repo_path, "b", &["a"]);
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create_commit(&test_env, &repo_path, "c", &[]);
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create_commit(&test_env, &repo_path, "d", &["c"]);
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create_commit(&test_env, &repo_path, "e", &["a", "d"]);
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// Test the setup
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insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
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@ e
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├─╮
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◉ │ d
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◉ │ c
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│ │ ◉ b
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│ ├─╯
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│ ◉ a
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├─╯
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◉
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"###);
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let stdout = test_env.jj_cmd_success(&repo_path, &["rebase", "-b", "d", "-d", "b"]);
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insta::assert_snapshot!(stdout, @r###"
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Rebased 3 commits
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Working copy now at: 391c91a7defa e
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Parent commit : 1677f79555e4 d
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Added 1 files, modified 0 files, removed 0 files
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"###);
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insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
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@ e
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◉ d
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◉ c
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◉ b
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◉ a
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◉
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"###);
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test_env.jj_cmd_success(&repo_path, &["undo"]);
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let stdout = test_env.jj_cmd_success(&repo_path, &["rebase", "-d", "b"]);
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insta::assert_snapshot!(stdout, @r###"
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Rebased 3 commits
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Working copy now at: 040ae3a6d358 e
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Parent commit : 3d0f3644db16 d
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Added 1 files, modified 0 files, removed 0 files
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"###);
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insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
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@ e
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◉ d
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◉ c
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◉ b
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◉ a
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◉
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"###);
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}
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#[test]
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fn test_rebase_single_revision() {
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let test_env = TestEnvironment::default();
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test_env.jj_cmd_success(test_env.env_root(), &["init", "repo", "--git"]);
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let repo_path = test_env.env_root().join("repo");
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create_commit(&test_env, &repo_path, "a", &[]);
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create_commit(&test_env, &repo_path, "b", &[]);
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create_commit(&test_env, &repo_path, "c", &["a", "b"]);
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create_commit(&test_env, &repo_path, "d", &["c"]);
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// Test the setup
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insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
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@ d
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◉ c
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├─╮
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│ ◉ a
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◉ │ b
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├─╯
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◉
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"###);
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// Descendants of the rebased commit "b" should be rebased onto parents. First
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// we test with a non-merge commit. Normally, the descendant "c" would still
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// have 2 parents afterwards: the parent of "b" -- the root commit -- and
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// "a". However, since the root commit is an ancestor of "a", we don't
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// actually want both to be parents of the same commit. So, only "a" becomes
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// a parent.
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let stdout = test_env.jj_cmd_success(&repo_path, &["rebase", "-r", "b", "-d", "a"]);
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insta::assert_snapshot!(stdout, @r###"
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Also rebased 2 descendant commits onto parent of rebased commit
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Working copy now at: 7e15b97a447f d
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Parent commit : 934236c8090e c
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Added 0 files, modified 0 files, removed 1 files
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"###);
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insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
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@ d
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◉ c
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│ ◉ b
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├─╯
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◉ a
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◉
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"###);
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test_env.jj_cmd_success(&repo_path, &["undo"]);
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// Now, let's try moving the merge commit. After, both parents of "c" ("a" and
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// "b") should become parents of "d".
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let stdout = test_env.jj_cmd_success(&repo_path, &["rebase", "-r", "c", "-d", "root"]);
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insta::assert_snapshot!(stdout, @r###"
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Also rebased 1 descendant commits onto parent of rebased commit
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Working copy now at: bf87078f4560 d
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Parent commit : d370aee184ba b
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Parent commit : 2443ea76b0b1 a
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Added 0 files, modified 0 files, removed 1 files
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"###);
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insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
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@ d
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├─╮
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│ ◉ a
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◉ │ b
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├─╯
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│ ◉ c
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├─╯
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◉
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"###);
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}
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#[test]
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fn test_rebase_single_revision_merge_parent() {
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let test_env = TestEnvironment::default();
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test_env.jj_cmd_success(test_env.env_root(), &["init", "repo", "--git"]);
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let repo_path = test_env.env_root().join("repo");
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create_commit(&test_env, &repo_path, "a", &[]);
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create_commit(&test_env, &repo_path, "b", &[]);
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create_commit(&test_env, &repo_path, "c", &["b"]);
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create_commit(&test_env, &repo_path, "d", &["a", "c"]);
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// Test the setup
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insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
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@ d
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├─╮
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│ ◉ a
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◉ │ c
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◉ │ b
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├─╯
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◉
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"###);
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// Descendants of the rebased commit should be rebased onto parents, and if
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// the descendant is a merge commit, it shouldn't forget its other parents.
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let stdout = test_env.jj_cmd_success(&repo_path, &["rebase", "-r", "c", "-d", "a"]);
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insta::assert_snapshot!(stdout, @r###"
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Also rebased 1 descendant commits onto parent of rebased commit
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Working copy now at: c62d0789e7c7 d
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Parent commit : d370aee184ba b
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Parent commit : 2443ea76b0b1 a
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Added 0 files, modified 0 files, removed 1 files
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"###);
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insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
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@ d
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├─╮
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◉ │ b
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│ │ ◉ c
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│ ├─╯
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│ ◉ a
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├─╯
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◉
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"###);
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}
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#[test]
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fn test_rebase_multiple_destinations() {
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let test_env = TestEnvironment::default();
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test_env.jj_cmd_success(test_env.env_root(), &["init", "repo", "--git"]);
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let repo_path = test_env.env_root().join("repo");
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create_commit(&test_env, &repo_path, "a", &[]);
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create_commit(&test_env, &repo_path, "b", &[]);
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create_commit(&test_env, &repo_path, "c", &[]);
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// Test the setup
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insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
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@ c
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│ ◉ b
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├─╯
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│ ◉ a
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├─╯
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◉
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"###);
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let stdout = test_env.jj_cmd_success(&repo_path, &["rebase", "-r", "a", "-d", "b", "-d", "c"]);
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insta::assert_snapshot!(stdout, @r###""###);
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insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
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◉ a
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├─╮
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│ ◉ b
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@ │ c
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├─╯
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◉
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"###);
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let stderr = test_env.jj_cmd_failure(&repo_path, &["rebase", "-r", "a", "-d", "b|c"]);
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insta::assert_snapshot!(stderr, @r###"
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Error: Revset "b|c" resolved to more than one revision
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Hint: The revset "b|c" resolved to these revisions:
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fe2e8e8b50b3 c
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d370aee184ba b
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If this was intentional, specify the `--allow-large-revsets` argument
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"###);
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let stdout = test_env.jj_cmd_success(
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&repo_path,
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&["rebase", "--allow-large-revsets", "-r", "a", "-d", "b|c"],
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);
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insta::assert_snapshot!(stdout, @r###""###);
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insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
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◉ a
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├─╮
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│ ◉ b
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@ │ c
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├─╯
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◉
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"###);
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let stderr = test_env.jj_cmd_failure(&repo_path, &["rebase", "-r", "a", "-d", "b", "-d", "b"]);
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insta::assert_snapshot!(stderr, @r###"
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Error: More than one revset resolved to revision d370aee184ba
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"###);
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// Adding --allow-large-revsets suppresses this error in addition to the large
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// revsets error.
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let stdout = test_env.jj_cmd_success(
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&repo_path,
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&[
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"rebase",
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"-r",
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"a",
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"-d",
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"b",
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"-d",
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"b",
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"--allow-large-revsets",
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],
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);
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insta::assert_snapshot!(stdout, @"");
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insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
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◉ a
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◉ b
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│ @ c
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├─╯
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◉
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"###);
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let stdout = test_env.jj_cmd_success(
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&repo_path,
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&[
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"rebase",
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"-r",
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"a",
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"-d",
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"b|c",
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"-d",
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"b",
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"--allow-large-revsets",
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],
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);
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insta::assert_snapshot!(stdout, @"");
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insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
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◉ a
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├─╮
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│ ◉ b
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@ │ c
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├─╯
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◉
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"###);
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let stderr =
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test_env.jj_cmd_failure(&repo_path, &["rebase", "-r", "a", "-d", "b", "-d", "root"]);
|
|
insta::assert_snapshot!(stderr, @r###"
|
|
Error: Cannot merge with root revision
|
|
"###);
|
|
}
|
|
|
|
#[test]
|
|
fn test_rebase_with_descendants() {
|
|
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");
|
|
|
|
create_commit(&test_env, &repo_path, "a", &[]);
|
|
create_commit(&test_env, &repo_path, "b", &[]);
|
|
create_commit(&test_env, &repo_path, "c", &["a", "b"]);
|
|
create_commit(&test_env, &repo_path, "d", &["c"]);
|
|
// Test the setup
|
|
insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
|
|
@ d
|
|
◉ c
|
|
├─╮
|
|
│ ◉ a
|
|
◉ │ b
|
|
├─╯
|
|
◉
|
|
"###);
|
|
|
|
let stdout = test_env.jj_cmd_success(&repo_path, &["rebase", "-s", "b", "-d", "a"]);
|
|
insta::assert_snapshot!(stdout, @r###"
|
|
Rebased 3 commits
|
|
Working copy now at: 309336ffce22 d
|
|
Parent commit : 244fa794aa18 c
|
|
"###);
|
|
insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
|
|
@ d
|
|
◉ c
|
|
◉ b
|
|
◉ a
|
|
◉
|
|
"###);
|
|
|
|
// Rebase several subtrees at once.
|
|
test_env.jj_cmd_success(&repo_path, &["undo"]);
|
|
let stdout = test_env.jj_cmd_success(&repo_path, &["rebase", "-s=c", "-s=d", "-d=a"]);
|
|
insta::assert_snapshot!(stdout, @r###"
|
|
Rebased 2 commits
|
|
Working copy now at: 92c2bc9a8623 d
|
|
Parent commit : 2443ea76b0b1 a
|
|
Added 0 files, modified 0 files, removed 2 files
|
|
"###);
|
|
insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
|
|
@ d
|
|
│ ◉ c
|
|
├─╯
|
|
◉ a
|
|
│ ◉ b
|
|
├─╯
|
|
◉
|
|
"###);
|
|
|
|
test_env.jj_cmd_success(&repo_path, &["undo"]);
|
|
// Reminder of the setup
|
|
insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
|
|
@ d
|
|
◉ c
|
|
├─╮
|
|
│ ◉ a
|
|
◉ │ b
|
|
├─╯
|
|
◉
|
|
"###);
|
|
|
|
// `d` was a descendant of `b`, and both are moved to be direct descendants of
|
|
// `a`. `c` remains a descendant of `b`.
|
|
let stdout = test_env.jj_cmd_success(&repo_path, &["rebase", "-s=b", "-s=d", "-d=a"]);
|
|
insta::assert_snapshot!(stdout, @r###"
|
|
Rebased 3 commits
|
|
Working copy now at: f1e71cb78a06 d
|
|
Parent commit : 2443ea76b0b1 a
|
|
Added 0 files, modified 0 files, removed 2 files
|
|
"###);
|
|
insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
|
|
◉ c
|
|
◉ b
|
|
│ @ d
|
|
├─╯
|
|
◉ a
|
|
◉
|
|
"###);
|
|
|
|
// Same test as above, but with duplicate commits and multiple commits per
|
|
// argument
|
|
test_env.jj_cmd_success(&repo_path, &["undo"]);
|
|
let stderr = test_env.jj_cmd_failure(&repo_path, &["rebase", "-s=b|d", "-s=d", "-d=a"]);
|
|
insta::assert_snapshot!(stderr, @r###"
|
|
Error: Revset "b|d" resolved to more than one revision
|
|
Hint: The revset "b|d" resolved to these revisions:
|
|
df54a9fd85ae d
|
|
d370aee184ba b
|
|
If this was intentional, specify the `--allow-large-revsets` argument
|
|
"###);
|
|
let stdout = test_env.jj_cmd_success(
|
|
&repo_path,
|
|
&["rebase", "-s=b|d", "-s=d", "-d=a", "--allow-large-revsets"],
|
|
);
|
|
insta::assert_snapshot!(stdout, @r###"
|
|
Rebased 3 commits
|
|
Working copy now at: d17539f7ea7c d
|
|
Parent commit : 2443ea76b0b1 a
|
|
Added 0 files, modified 0 files, removed 2 files
|
|
"###);
|
|
insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"
|
|
◉ c
|
|
◉ b
|
|
│ @ d
|
|
├─╯
|
|
◉ a
|
|
◉
|
|
"###);
|
|
}
|
|
|
|
fn get_log_output(test_env: &TestEnvironment, repo_path: &Path) -> String {
|
|
test_env.jj_cmd_success(repo_path, &["log", "-T", "branches"])
|
|
}
|