// Copyright 2024 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; fn create_commit(    test_env: &TestEnvironment,    repo_path: &Path,    name: &str,    parents: &[&str],    files: &[(&str, &str)],) {    if parents.is_empty() {        test_env.jj_cmd_ok(repo_path, &["new", "root()", "-m", name]);    } else {        let mut args = vec!["new", "-m", name];        args.extend(parents);        test_env.jj_cmd_ok(repo_path, &args);    }    for (name, contents) in files {        std::fs::write(repo_path.join(name), contents).unwrap();    }    test_env.jj_cmd_ok(repo_path, &["bookmark", "create", name]);} #[test]fn test_backout() {    let test_env = TestEnvironment::default();    test_env.jj_cmd_ok(test_env.env_root(), &["init", "repo", "--git"]);    let repo_path = test_env.env_root().join("repo");     create_commit(&test_env, &repo_path, "a", &[], &[("a", "a\n")]);    // Test the setup    insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"    @  2443ea76b0b1 a    ◆  000000000000    "###);    let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s"]);    insta::assert_snapshot!(stdout, @r###"    A a    "###);     // Backout the commit    let (stdout, stderr) = test_env.jj_cmd_ok(&repo_path, &["backout", "-r", "@"]);    insta::assert_snapshot!(stdout, @"");    insta::assert_snapshot!(stderr, @"");    insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"    ○  6d845ed9fb6a Back out "a"    │    │  This backs out commit 2443ea76b0b1c531326908326aab7020abab8e6c.    @  2443ea76b0b1 a    ◆  000000000000    "###);    let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s", "-r", "@+"]);    insta::assert_snapshot!(stdout, @r###"    D a    "###);     // Backout the new backed-out commit    test_env.jj_cmd_ok(&repo_path, &["edit", "@+"]);    let (stdout, stderr) = test_env.jj_cmd_ok(&repo_path, &["backout", "-r", "@"]);    insta::assert_snapshot!(stdout, @"");    insta::assert_snapshot!(stderr, @"");    insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"    ○  79555ea9040b Back out "Back out "a""    │    │  This backs out commit 6d845ed9fb6a3d367e2d7068ef0256b1a10705a9.    @  6d845ed9fb6a Back out "a"    │    │  This backs out commit 2443ea76b0b1c531326908326aab7020abab8e6c.    ○  2443ea76b0b1 a    ◆  000000000000    "###);    let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s", "-r", "@+"]);    insta::assert_snapshot!(stdout, @r###"    A a    "###);} #[test]fn test_backout_multiple() {    let test_env = TestEnvironment::default();    test_env.jj_cmd_ok(test_env.env_root(), &["init", "repo", "--git"]);    let repo_path = test_env.env_root().join("repo");     create_commit(&test_env, &repo_path, "a", &[], &[("a", "a\n")]);    create_commit(&test_env, &repo_path, "b", &["a"], &[("a", "a\nb\n")]);    create_commit(        &test_env,        &repo_path,        "c",        &["b"],        &[("a", "a\nb\n"), ("b", "b\n")],    );    create_commit(&test_env, &repo_path, "d", &["c"], &[]);    create_commit(&test_env, &repo_path, "e", &["d"], &[("a", "a\nb\nc\n")]);     // Test the setup    insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"    @  208f8612074a e    ○  ceeec03be46b d    ○  413337bbd11f c    ○  46cc97af6802 b    ○  2443ea76b0b1 a    ◆  000000000000    "###);     // Backout multiple commits    let (stdout, stderr) =        test_env.jj_cmd_ok(&repo_path, &["backout", "-r", "b", "-r", "c", "-r", "e"]);    insta::assert_snapshot!(stdout, @"");    insta::assert_snapshot!(stderr, @"");    insta::assert_snapshot!(get_log_output(&test_env, &repo_path), @r###"    ○  6504c4ded177 Back out "b"    │    │  This backs out commit 46cc97af6802301d8db381386e8485ff3ff24ae6.    ○  d31d42e0267f Back out "c"    │    │  This backs out commit 413337bbd11f7a6636c010d9e196acf801d8df2f.    ○  8ff3fbc2ccb0 Back out "e"    │    │  This backs out commit 208f8612074af4c219d06568a8e1f04f2e80dc25.    @  208f8612074a e    ○  ceeec03be46b d    ○  413337bbd11f c    ○  46cc97af6802 b    ○  2443ea76b0b1 a    ◆  000000000000    "###);    // View the output of each backed out commit    let stdout = test_env.jj_cmd_success(&repo_path, &["show", "@+"]);    insta::assert_snapshot!(stdout, @r###"    Commit ID: 8ff3fbc2ccb0d66985f558c461d1643cebb4c7d6    Change ID: wqnwkozpkustnxypnnntnykwrqrkrpvv    Author: Test User <test.user@example.com> (2001-02-03 08:05:19)    Committer: Test User <test.user@example.com> (2001-02-03 08:05:19)         Back out "e"         This backs out commit 208f8612074af4c219d06568a8e1f04f2e80dc25.     Modified regular file a:       1    1: a       2    2: b       3     : c    "###);    let stdout = test_env.jj_cmd_success(&repo_path, &["show", "@++"]);    insta::assert_snapshot!(stdout, @r###"    Commit ID: d31d42e0267f6524d445348b1dd00926c62a6b57    Change ID: mouksmquosnpvwqrpsvvxtxpywpnxlss    Author: Test User <test.user@example.com> (2001-02-03 08:05:19)    Committer: Test User <test.user@example.com> (2001-02-03 08:05:19)         Back out "c"         This backs out commit 413337bbd11f7a6636c010d9e196acf801d8df2f.     Removed regular file b:       1     : b    "###);    let stdout = test_env.jj_cmd_success(&repo_path, &["show", "@+++"]);    insta::assert_snapshot!(stdout, @r###"    Commit ID: 6504c4ded177fba2334f76683d1aa643700d5073    Change ID: tqvpomtpwrqsylrpsxknultrymmqxmxv    Author: Test User <test.user@example.com> (2001-02-03 08:05:19)    Committer: Test User <test.user@example.com> (2001-02-03 08:05:19)         Back out "b"         This backs out commit 46cc97af6802301d8db381386e8485ff3ff24ae6.     Modified regular file a:       1    1: a       2     : b    "###);} fn get_log_output(test_env: &TestEnvironment, cwd: &Path) -> String {    let template = r#"commit_id.short() ++ " " ++ description"#;    test_env.jj_cmd_success(cwd, &["log", "-T", template])}