// Copyright 2020 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::io::Write as _; use testutils::TestResult;use testutils::git; use crate::common::TestEnvironment; #[test]fn test_gitignores() -> TestResult {    let test_env = TestEnvironment::default();    let work_dir = test_env.work_dir("repo");    git::init(work_dir.root());    work_dir        .run_jj(["git", "init", "--git-repo", "."])        .success();     // Say in core.excludesFiles that we don't want file1, file2, or file3    let mut file = std::fs::OpenOptions::new()        .append(true)        .open(work_dir.root().join(".git").join("config"))?;    // Put the file in "~/my-ignores" so we also test that "~" expands to "$HOME"    file.write_all(b"[core]\nexcludesFile=~/my-ignores\n")?;    drop(file);    std::fs::write(        test_env.home_dir().join("my-ignores"),        "file1\nfile2\nfile3",    )?;     // Say in .git/info/exclude that we actually do want file2 and file3    let mut file = std::fs::OpenOptions::new()        .append(true)        .open(work_dir.root().join(".git").join("info").join("exclude"))?;    file.write_all(b"!file2\n!file3")?;    drop(file);     // Say in .gitignore (in the working copy) that we actually do not want file2    // (again)    work_dir.write_file(".gitignore", "file2");     // Writes some files to the working copy    work_dir.write_file("file0", "contents");    work_dir.write_file("file1", "contents");    work_dir.write_file("file2", "contents");    work_dir.write_file("file3", "contents");     let output = work_dir.run_jj(["diff", "-s"]);    insta::assert_snapshot!(output, @"    A .gitignore    A file0    A file3    [EOF]    ");    Ok(())} #[test]fn test_gitignores_relative_excludes_file_path() -> TestResult {    let test_env = TestEnvironment::default();    let work_dir = test_env.work_dir("repo");    test_env        .run_jj_in(".", ["git", "init", "--colocate", "repo"])        .success();     let mut file = std::fs::OpenOptions::new()        .append(true)        .open(work_dir.root().join(".git").join("config"))?;    file.write_all(b"[core]\nexcludesFile=../my-ignores\n")?;    drop(file);    std::fs::write(test_env.env_root().join("my-ignores"), "ignored\n")?;     work_dir.write_file("ignored", "");    work_dir.write_file("not-ignored", "");     // core.excludesFile should be resolved relative to the workspace root, not    // to the cwd.    let sub_dir = work_dir.create_dir("sub");    let output = sub_dir.run_jj(["diff", "-s"]);    insta::assert_snapshot!(output.normalize_backslash(), @"    A ../not-ignored    [EOF]    ");    let output = test_env.run_jj_in(".", ["-Rrepo", "diff", "-s"]);    insta::assert_snapshot!(output.normalize_backslash(), @"    A repo/not-ignored    [EOF]    ");    Ok(())} #[test]fn test_gitignores_ignored_file_in_target_commit() {    let test_env = TestEnvironment::default();    let work_dir = test_env.work_dir("repo");    git::init(work_dir.root());    work_dir        .run_jj(["git", "init", "--git-repo", "."])        .success();     // Create a commit with file "ignored" in it    work_dir.write_file("ignored", "committed contents\n");    work_dir        .run_jj(["bookmark", "create", "-r@", "with-file"])        .success();    let target_commit_id = work_dir        .run_jj(["log", "--no-graph", "-T=commit_id", "-r=@"])        .success()        .stdout        .into_raw();     // Create another commit where we ignore that path    work_dir.run_jj(["new", "root()"]).success();    work_dir.write_file("ignored", "contents in working copy\n");    work_dir.write_file(".gitignore", ".gitignore\nignored\n");     // Update to the commit with the "ignored" file    let output = work_dir.run_jj(["edit", "with-file"]);    insta::assert_snapshot!(output, @"    ------- stderr -------    Working copy  (@) now at: qpvuntsm 3cf51c1a with-file | (no description set)    Parent commit (@-)      : zzzzzzzz 00000000 (empty) (no description set)    Added 1 files, modified 0 files, removed 0 files    Warning: 1 of those updates were skipped because there were conflicting changes in the working copy.    Hint: Inspect the changes compared to the intended target with `jj diff --from 3cf51c1acf24`.    Discard the conflicting changes with `jj restore --from 3cf51c1acf24`.    [EOF]    ");    let output = work_dir.run_jj(["diff", "--git", "--from", &target_commit_id]);    insta::assert_snapshot!(output, @"    diff --git a/ignored b/ignored    index 8a69467466..4d9be5127b 100644    --- a/ignored    +++ b/ignored    @@ -1,1 +1,1 @@    -committed contents    +contents in working copy    [EOF]    ");}