// 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; use crate::common::TestEnvironment; #[test]fn test_gitignores() {    let test_env = TestEnvironment::default();    let workspace_root = test_env.env_root().join("repo");    git2::Repository::init(&workspace_root).unwrap();    test_env.jj_cmd_ok(&workspace_root, &["init", "--git-repo", "."]);     // Say in core.excludesFiles that we don't want file1, file2, or file3    let mut file = std::fs::OpenOptions::new()        .append(true)        .open(workspace_root.join(".git").join("config"))        .unwrap();    // Put the file in "~/my-ignores" so we also test that "~" expands to "$HOME"    file.write_all(b"[core]\nexcludesFile=~/my-ignores\n")        .unwrap();    drop(file);    std::fs::write(        test_env.home_dir().join("my-ignores"),        "file1\nfile2\nfile3",    )    .unwrap();     // Say in .git/info/exclude that we actually do want file2 and file3    let mut file = std::fs::OpenOptions::new()        .append(true)        .open(workspace_root.join(".git").join("info").join("exclude"))        .unwrap();    file.write_all(b"!file2\n!file3").unwrap();    drop(file);     // Say in .gitignore (in the working copy) that we actually do not want file2    // (again)    std::fs::write(workspace_root.join(".gitignore"), "file2").unwrap();     // Writes some files to the working copy    std::fs::write(workspace_root.join("file0"), "contents").unwrap();    std::fs::write(workspace_root.join("file1"), "contents").unwrap();    std::fs::write(workspace_root.join("file2"), "contents").unwrap();    std::fs::write(workspace_root.join("file3"), "contents").unwrap();     let stdout = test_env.jj_cmd_success(&workspace_root, &["diff", "-s"]);    insta::assert_snapshot!(stdout, @r###"    A .gitignore    A file0    A file3    "###);} #[test]fn test_gitignores_ignored_file_in_target_commit() {    let test_env = TestEnvironment::default();    let workspace_root = test_env.env_root().join("repo");    git2::Repository::init(&workspace_root).unwrap();    test_env.jj_cmd_ok(&workspace_root, &["init", "--git-repo", "."]);     // Create a commit with file "ignored" in it    std::fs::write(workspace_root.join("ignored"), "committed contents\n").unwrap();    test_env.jj_cmd_ok(&workspace_root, &["branch", "create", "with-file"]);    let target_commit_id = test_env.jj_cmd_success(        &workspace_root,        &["log", "--no-graph", "-T=commit_id", "-r=@"],    );     // Create another commit where we ignore that path    test_env.jj_cmd_ok(&workspace_root, &["new", "root()"]);    std::fs::write(workspace_root.join("ignored"), "contents in working copy\n").unwrap();    std::fs::write(workspace_root.join(".gitignore"), ".gitignore\nignored\n").unwrap();     // Update to the commit with the "ignored" file    let (stdout, stderr) = test_env.jj_cmd_ok(&workspace_root, &["edit", "with-file"]);    insta::assert_snapshot!(stdout, @"");    insta::assert_snapshot!(stderr, @r###"    Working copy now at: qpvuntsm 4a703628 with-file | (no description set)    Parent commit      : zzzzzzzz 00000000 (empty) (no description set)    Added 1 files, modified 0 files, removed 0 files    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 4a703628bcb2`.    Discard the conflicting changes with `jj restore --from 4a703628bcb2`.    "###);    let stdout = test_env.jj_cmd_success(        &workspace_root,        &["diff", "--git", "--from", &target_commit_id],    );    insta::assert_snapshot!(stdout, @r###"    diff --git a/ignored b/ignored    index 8a69467466...4d9be5127b 100644    --- a/ignored    +++ b/ignored    @@ -1,1 +1,1 @@    -committed contents    +contents in working copy    "###);}