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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 testutils::git; use crate::common::CommandOutput;use crate::common::TestEnvironment; #[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.run_jj_in(".", ["git", "init", "repo"]).success();    let repo_path = test_env.env_root().join("repo");     test_env        .run_jj_in(&repo_path, ["describe", "-m", "initial"])        .success();    test_env        .run_jj_in(&repo_path, ["describe", "-m", "modified"])        .success();    let output = test_env.run_jj_in(&repo_path, ["op", "log"]).success();    let op_id_hex = output.stdout.raw()[3..15].to_string();    test_env        .run_jj_in(&repo_path, ["new", "-m", "child"])        .success();    let output = test_env.run_jj_in(&repo_path, ["log", "-T", "description"]);    insta::assert_snapshot!(output, @r"    @  child    ○  modified    ◆    [EOF]    ");    test_env        .run_jj_in(&repo_path, ["undo", &op_id_hex])        .success();     // Since we undid the description-change, the child commit should now be on top    // of the initial commit    let output = test_env.run_jj_in(&repo_path, ["log", "-T", "description"]);    insta::assert_snapshot!(output, @r"    @  child    ○  initial    ◆    [EOF]    ");} #[test]fn test_git_push_undo() {    let test_env = TestEnvironment::default();    test_env.add_config(r#"revset-aliases."immutable_heads()" = "none()""#);    let git_repo_path = test_env.env_root().join("git-repo");    git::init_bare(git_repo_path);    test_env        .run_jj_in(".", ["git", "clone", "git-repo", "repo"])        .success();    let repo_path = test_env.env_root().join("repo");     test_env.advance_test_rng_seed_to_multiple_of(100_000);    test_env        .run_jj_in(&repo_path, ["bookmark", "create", "-r@", "main"])        .success();    test_env        .run_jj_in(&repo_path, ["describe", "-m", "AA"])        .success();    test_env        .run_jj_in(&repo_path, ["git", "push", "--allow-new"])        .success();    test_env.advance_test_rng_seed_to_multiple_of(100_000);    test_env        .run_jj_in(&repo_path, ["describe", "-m", "BB"])        .success();    //   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_bookmark_output(&test_env, &repo_path), @r"    main: qpvuntsm 75e78001 (empty) BB      @origin (ahead by 1 commits, behind by 1 commits): qpvuntsm hidden 2080bdb8 (empty) AA    [EOF]    ");    let pre_push_opid = test_env.work_dir(&repo_path).current_operation_id();    test_env.run_jj_in(&repo_path, ["git", "push"]).success();    //                     | jj refs | jj's   | git    //                     |         | git    | repo    //                     |         |tracking|    //   ------------------------------------------    //    local  `main`    | BB      |   --   | --    //    remote-tracking  | BB      |   BB   | BB    insta::assert_snapshot!(get_bookmark_output(&test_env, &repo_path), @r"    main: qpvuntsm 75e78001 (empty) BB      @origin: qpvuntsm 75e78001 (empty) BB    [EOF]    ");     // Undo the push    test_env        .run_jj_in(&repo_path, ["op", "restore", &pre_push_opid])        .success();    //                     | jj refs | jj's   | git    //                     |         | git    | repo    //                     |         |tracking|    //   ------------------------------------------    //    local  `main`    | BB      |   --   | --    //    remote-tracking  | AA      |   AA   | BB    insta::assert_snapshot!(get_bookmark_output(&test_env, &repo_path), @r"    main: qpvuntsm 75e78001 (empty) BB      @origin (ahead by 1 commits, behind by 1 commits): qpvuntsm hidden 2080bdb8 (empty) AA    [EOF]    ");    test_env.advance_test_rng_seed_to_multiple_of(100_000);    test_env        .run_jj_in(&repo_path, ["describe", "-m", "CC"])        .success();    test_env.run_jj_in(&repo_path, ["git", "fetch"]).success();    // 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    // bookmarks, 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_bookmark_output(&test_env, &repo_path), @r"    main (conflicted):      - qpvuntsm hidden 2080bdb8 (empty) AA      + qpvuntsm?? 20b2cc4b (empty) CC      + qpvuntsm?? 75e78001 (empty) BB      @origin (behind by 1 commits): qpvuntsm?? 75e78001 (empty) BB    [EOF]    ");} /// 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();    test_env.add_config(r#"revset-aliases."immutable_heads()" = "none()""#);    let git_repo_path = test_env.env_root().join("git-repo");    git::init_bare(git_repo_path);    test_env        .run_jj_in(".", ["git", "clone", "git-repo", "repo"])        .success();    let repo_path = test_env.env_root().join("repo");     test_env.advance_test_rng_seed_to_multiple_of(100_000);    test_env        .run_jj_in(&repo_path, ["bookmark", "create", "-r@", "main"])        .success();    test_env        .run_jj_in(&repo_path, ["describe", "-m", "AA"])        .success();    test_env        .run_jj_in(&repo_path, ["git", "push", "--allow-new"])        .success();    test_env.advance_test_rng_seed_to_multiple_of(100_000);    test_env        .run_jj_in(&repo_path, ["describe", "-m", "BB"])        .success();    //   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_bookmark_output(&test_env, &repo_path), @r"    main: qpvuntsm 75e78001 (empty) BB      @origin (ahead by 1 commits, behind by 1 commits): qpvuntsm hidden 2080bdb8 (empty) AA    [EOF]    ");    let pre_push_opid = test_env.work_dir(&repo_path).current_operation_id();    test_env.run_jj_in(&repo_path, ["git", "push"]).success();    //                     | jj refs | jj's   | git    //                     |         | git    | repo    //                     |         |tracking|    //   ------------------------------------------    //    local  `main`    | BB      |   --   | --    //    remote-tracking  | BB      |   BB   | BB    insta::assert_snapshot!(get_bookmark_output(&test_env, &repo_path), @r"    main: qpvuntsm 75e78001 (empty) BB      @origin: qpvuntsm 75e78001 (empty) BB    [EOF]    ");     // Undo the push    test_env        .run_jj_in(&repo_path, ["op", "restore", &pre_push_opid])        .success();    //                     | jj refs | jj's   | git    //                     |         | git    | repo    //                     |         |tracking|    //   ------------------------------------------    //    local  `main`    | BB      |   --   | --    //    remote-tracking  | AA      |   AA   | BB    insta::assert_snapshot!(get_bookmark_output(&test_env, &repo_path), @r"    main: qpvuntsm 75e78001 (empty) BB      @origin (ahead by 1 commits, behind by 1 commits): qpvuntsm hidden 2080bdb8 (empty) AA    [EOF]    ");     // 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 bookmarks should happen on every operation.    test_env.run_jj_in(&repo_path, ["git", "import"]).success();    //                     | jj refs | jj's   | git    //                     |         | git    | repo    //                     |         |tracking|    //   ------------------------------------------    //    local  `main`    | BB      |   --   | --    //    remote-tracking  | BB      |   BB   | BB    insta::assert_snapshot!(get_bookmark_output(&test_env, &repo_path), @r"    main: qpvuntsm 75e78001 (empty) BB      @origin: qpvuntsm 75e78001 (empty) BB    [EOF]    ");    test_env.advance_test_rng_seed_to_multiple_of(100_000);    test_env        .run_jj_in(&repo_path, ["describe", "-m", "CC"])        .success();    test_env.run_jj_in(&repo_path, ["git", "fetch"]).success();    // There is not a conflict. This seems like a good outcome; undoing `git push`    // was essentially a no-op.    insta::assert_snapshot!(get_bookmark_output(&test_env, &repo_path), @r"    main: qpvuntsm 20b2cc4b (empty) CC      @origin (ahead by 1 commits, behind by 1 commits): qpvuntsm hidden 75e78001 (empty) BB    [EOF]    ");} // 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();    test_env.add_config(r#"revset-aliases."immutable_heads()" = "none()""#);    let git_repo_path = test_env.env_root().join("git-repo");    git::init_bare(git_repo_path.clone());    let repo_path = test_env.env_root().join("clone");    git::clone(&repo_path, git_repo_path.to_str().unwrap(), None);     test_env        .run_jj_in(&repo_path, ["git", "init", "--git-repo=."])        .success();     test_env.advance_test_rng_seed_to_multiple_of(100_000);    test_env        .run_jj_in(&repo_path, ["bookmark", "create", "-r@", "main"])        .success();    test_env        .run_jj_in(&repo_path, ["describe", "-m", "AA"])        .success();    test_env        .run_jj_in(&repo_path, ["git", "push", "--allow-new"])        .success();    test_env.advance_test_rng_seed_to_multiple_of(100_000);    test_env        .run_jj_in(&repo_path, ["describe", "-m", "BB"])        .success();    //   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_bookmark_output(&test_env, &repo_path), @r"    main: qpvuntsm 75e78001 (empty) BB      @git: qpvuntsm 75e78001 (empty) BB      @origin (ahead by 1 commits, behind by 1 commits): qpvuntsm hidden 2080bdb8 (empty) AA    [EOF]    ");    let pre_push_opid = test_env.work_dir(&repo_path).current_operation_id();    test_env.run_jj_in(&repo_path, ["git", "push"]).success();    //                     | jj refs | jj's   | git    //                     |         | git    | repo    //                     |         |tracking|    //   ------------------------------------------    //    local `main`     | BB      |   BB   | BB    //    remote-tracking  | BB      |   BB   | BB    insta::assert_snapshot!(get_bookmark_output(&test_env, &repo_path), @r"    main: qpvuntsm 75e78001 (empty) BB      @git: qpvuntsm 75e78001 (empty) BB      @origin: qpvuntsm 75e78001 (empty) BB    [EOF]    ");     // Undo the push    test_env        .run_jj_in(&repo_path, ["op", "restore", &pre_push_opid])        .success();    //       === 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_bookmark_output(&test_env, &repo_path), @r"    main: qpvuntsm 75e78001 (empty) BB      @git: qpvuntsm 75e78001 (empty) BB      @origin (ahead by 1 commits, behind by 1 commits): qpvuntsm hidden 2080bdb8 (empty) AA    [EOF]    ");    test_env.advance_test_rng_seed_to_multiple_of(100_000);    test_env        .run_jj_in(&repo_path, ["describe", "-m", "CC"])        .success();    test_env.run_jj_in(&repo_path, ["git", "fetch"]).success();    // 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_bookmark_output(&test_env, &repo_path), @r"    main (conflicted):      - qpvuntsm hidden 2080bdb8 (empty) AA      + qpvuntsm?? 20b2cc4b (empty) CC      + qpvuntsm?? 75e78001 (empty) BB      @git (behind by 1 commits): qpvuntsm?? 20b2cc4b (empty) CC      @origin (behind by 1 commits): qpvuntsm?? 75e78001 (empty) BB    [EOF]    ");} // This test is currently *identical* to `test_git_push_undo` except// both the git_refs and the remote-tracking bookmarks are preserved by undo.// TODO: Investigate the different outcome#[test]fn test_git_push_undo_repo_only() {    let test_env = TestEnvironment::default();    test_env.add_config(r#"revset-aliases."immutable_heads()" = "none()""#);    let git_repo_path = test_env.env_root().join("git-repo");    git::init_bare(git_repo_path);    test_env        .run_jj_in(".", ["git", "clone", "git-repo", "repo"])        .success();    let repo_path = test_env.env_root().join("repo");     test_env.advance_test_rng_seed_to_multiple_of(100_000);    test_env        .run_jj_in(&repo_path, ["bookmark", "create", "-r@", "main"])        .success();    test_env        .run_jj_in(&repo_path, ["describe", "-m", "AA"])        .success();    test_env        .run_jj_in(&repo_path, ["git", "push", "--allow-new"])        .success();    insta::assert_snapshot!(get_bookmark_output(&test_env, &repo_path), @r"    main: qpvuntsm 2080bdb8 (empty) AA      @origin: qpvuntsm 2080bdb8 (empty) AA    [EOF]    ");    test_env.advance_test_rng_seed_to_multiple_of(100_000);    test_env        .run_jj_in(&repo_path, ["describe", "-m", "BB"])        .success();    insta::assert_snapshot!(get_bookmark_output(&test_env, &repo_path), @r"    main: qpvuntsm 75e78001 (empty) BB      @origin (ahead by 1 commits, behind by 1 commits): qpvuntsm hidden 2080bdb8 (empty) AA    [EOF]    ");    let pre_push_opid = test_env.work_dir(&repo_path).current_operation_id();    test_env.run_jj_in(&repo_path, ["git", "push"]).success();     // Undo the push, but keep both the git_refs and the remote-tracking bookmarks    test_env        .run_jj_in(&repo_path, ["op", "restore", "--what=repo", &pre_push_opid])        .success();    insta::assert_snapshot!(get_bookmark_output(&test_env, &repo_path), @r"    main: qpvuntsm 75e78001 (empty) BB      @origin: qpvuntsm 75e78001 (empty) BB    [EOF]    ");    test_env.advance_test_rng_seed_to_multiple_of(100_000);    test_env        .run_jj_in(&repo_path, ["describe", "-m", "CC"])        .success();    test_env.run_jj_in(&repo_path, ["git", "fetch"]).success();    // This currently gives an identical result to `test_git_push_undo_import`.    insta::assert_snapshot!(get_bookmark_output(&test_env, &repo_path), @r"    main: qpvuntsm 20b2cc4b (empty) CC      @origin (ahead by 1 commits, behind by 1 commits): qpvuntsm hidden 75e78001 (empty) BB    [EOF]    ");} #[test]fn test_bookmark_track_untrack_undo() {    let test_env = TestEnvironment::default();    test_env.add_config(r#"revset-aliases."immutable_heads()" = "none()""#);    let git_repo_path = test_env.env_root().join("git-repo");    git::init_bare(git_repo_path);    test_env        .run_jj_in(".", ["git", "clone", "git-repo", "repo"])        .success();    let repo_path = test_env.env_root().join("repo");     test_env        .run_jj_in(&repo_path, ["describe", "-mcommit"])        .success();    test_env        .run_jj_in(            &repo_path,            ["bookmark", "create", "-r@", "feature1", "feature2"],        )        .success();    test_env        .run_jj_in(&repo_path, ["git", "push", "--allow-new"])        .success();    test_env        .run_jj_in(&repo_path, ["bookmark", "delete", "feature2"])        .success();    insta::assert_snapshot!(get_bookmark_output(&test_env, &repo_path), @r"    feature1: qpvuntsm 8da1cfc8 (empty) commit      @origin: qpvuntsm 8da1cfc8 (empty) commit    feature2 (deleted)      @origin: qpvuntsm 8da1cfc8 (empty) commit    [EOF]    ");     // Track/untrack can be undone so long as states can be trivially merged.    test_env        .run_jj_in(            &repo_path,            ["bookmark", "untrack", "feature1@origin", "feature2@origin"],        )        .success();    insta::assert_snapshot!(get_bookmark_output(&test_env, &repo_path), @r"    feature1: qpvuntsm 8da1cfc8 (empty) commit    feature1@origin: qpvuntsm 8da1cfc8 (empty) commit    feature2@origin: qpvuntsm 8da1cfc8 (empty) commit    [EOF]    ");     test_env.run_jj_in(&repo_path, ["undo"]).success();    insta::assert_snapshot!(get_bookmark_output(&test_env, &repo_path), @r"    feature1: qpvuntsm 8da1cfc8 (empty) commit      @origin: qpvuntsm 8da1cfc8 (empty) commit    feature2 (deleted)      @origin: qpvuntsm 8da1cfc8 (empty) commit    [EOF]    ");     test_env.run_jj_in(&repo_path, ["undo"]).success();    insta::assert_snapshot!(get_bookmark_output(&test_env, &repo_path), @r"    feature1: qpvuntsm 8da1cfc8 (empty) commit    feature1@origin: qpvuntsm 8da1cfc8 (empty) commit    feature2@origin: qpvuntsm 8da1cfc8 (empty) commit    [EOF]    ");     test_env        .run_jj_in(&repo_path, ["bookmark", "track", "feature1@origin"])        .success();    insta::assert_snapshot!(get_bookmark_output(&test_env, &repo_path), @r"    feature1: qpvuntsm 8da1cfc8 (empty) commit      @origin: qpvuntsm 8da1cfc8 (empty) commit    feature2@origin: qpvuntsm 8da1cfc8 (empty) commit    [EOF]    ");     test_env.run_jj_in(&repo_path, ["undo"]).success();    insta::assert_snapshot!(get_bookmark_output(&test_env, &repo_path), @r"    feature1: qpvuntsm 8da1cfc8 (empty) commit    feature1@origin: qpvuntsm 8da1cfc8 (empty) commit    feature2@origin: qpvuntsm 8da1cfc8 (empty) commit    [EOF]    ");} #[test]fn test_shows_a_warning_when_undoing_an_undo_operation_as_bare_jj_undo() {    let test_env = TestEnvironment::default();    test_env.run_jj_in(".", ["git", "init", "repo"]).success();    let repo_path = test_env.env_root().join("repo"); 

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