agent-berth 1.1.0

Monitor and resume coding agents
Documentation 
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use super::*;

fn write(path: &Path, text: &str) {
    std::fs::create_dir_all(path.parent().unwrap()).unwrap();
    std::fs::write(path, text).unwrap();
}

#[test]
fn reads_branch_from_git_directory() {
    let root = tempfile::tempdir().unwrap();
    write(&root.path().join(".git/HEAD"), "ref: refs/heads/main\n");
    assert_eq!(branch(root.path()).as_deref(), Some("main"));
}

#[test]
fn finds_repository_from_subdirectory() {
    let root = tempfile::tempdir().unwrap();
    write(
        &root.path().join(".git/HEAD"),
        "ref: refs/heads/feature/x\n",
    );
    let nested = root.path().join("a/b");
    std::fs::create_dir_all(&nested).unwrap();
    assert_eq!(branch(&nested).as_deref(), Some("feature/x"));
}

#[test]
fn reads_branch_from_worktree_gitdir_file() {
    let root = tempfile::tempdir().unwrap();
    let worktree = root.path().join("worktree");
    let git_dir = root.path().join("repo/.git/worktrees/worktree");
    write(&git_dir.join("HEAD"), "ref: refs/heads/topic\n");
    write(
        &worktree.join(".git"),
        &format!("gitdir: {}\n", git_dir.display()),
    );
    assert_eq!(branch(&worktree).as_deref(), Some("topic"));
}

#[test]
fn detached_head_uses_short_hash() {
    let root = tempfile::tempdir().unwrap();
    write(
        &root.path().join(".git/HEAD"),
        "0123456789abcdef0123456789abcdef01234567\n",
    );
    assert_eq!(branch(root.path()).as_deref(), Some("01234567"));
}

#[test]
fn missing_repository_has_no_branch() {
    let root = tempfile::tempdir().unwrap();
    assert_eq!(branch(root.path()), None);
}

#[test]
fn parses_github_remote_urls() {
    assert_eq!(
        parse_github_url("git@github.com:owner/repo.git").as_deref(),
        Some("owner/repo")
    );
    assert_eq!(
        parse_github_url("https://github.com/owner/repo.git").as_deref(),
        Some("owner/repo")
    );
    assert_eq!(
        parse_github_url("ssh://git@github.com/owner/repo").as_deref(),
        Some("owner/repo")
    );
    assert_eq!(parse_github_url("https://gitlab.com/owner/repo"), None);
    assert_eq!(parse_github_url("https://github.com/owner"), None);
}

#[test]
fn parses_porcelain_status() {
    let text = "# branch.oid abc\n# branch.head main\n# branch.ab +2 -1\n1 M. N... 100644 100644 100644 abc abc a.rs\n1 .M N... 100644 100644 100644 abc abc b.rs\n? new.rs\nu UU N... 100644 100644 100644 100644 abc abc abc c.rs\n";
    assert_eq!(
        parse_porcelain(text),
        RepoStatus {
            dirty: true,
            ahead: 2,
            behind: 1,
        }
    );
}

#[test]
fn porcelain_marks_each_kind_of_change_dirty() {
    for record in [
        "1 M. N... 100644 100644 100644 abc abc staged.rs",
        "1 .M N... 100644 100644 100644 abc abc modified.rs",
        "1 .D N... 100644 100644 000000 abc abc deleted.rs",
        "2 R. N... 100644 100644 100644 abc abc R100 new.rs\told.rs",
        "u UU N... 100644 100644 100644 100644 abc abc abc conflict.rs",
        "? untracked.rs",
        "1 .M S..U 160000 160000 160000 abc abc submodule",
    ] {
        assert!(parse_porcelain(record).dirty, "{record}");
    }
    assert_eq!(
        parse_porcelain("# branch.head main\n# branch.ab +0 -0\n! ignored.rs\n"),
        RepoStatus::default()
    );
}

#[test]
fn status_line_matches_git_multistatus() {
    for (dirty, ahead, behind, expected) in [
        (false, 0, 0, "feature/v1.2 (≡)"),
        (true, 0, 0, "feature/v1.2 (dirty)"),
        (false, 2, 0, "feature/v1.2 (ahead 2 ↑)"),
        (false, 0, 1, "feature/v1.2 (behind 1 ↓)"),
        (false, 2, 1, "feature/v1.2 (ahead 2 ↑ behind 1 ↓)"),
        (true, 2, 0, "feature/v1.2 (dirty) (ahead 2 ↑)"),
        (true, 0, 1, "feature/v1.2 (dirty) (behind 1 ↓)"),
        (true, 2, 1, "feature/v1.2 (dirty) (ahead 2 ↑ behind 1 ↓)"),
    ] {
        let state = RepoStatus {
            dirty,
            ahead,
            behind,
        };
        assert_eq!(status_line("feature/v1.2", &state), expected);
    }
}

#[test]
fn repo_info_reads_real_repository() {
    let root = tempfile::tempdir().unwrap();
    let Ok(init) = std::process::Command::new("git")
        .args(["init", "-b", "main"])
        .current_dir(root.path())
        .output()
    else {
        return;
    };
    if !init.status.success() {
        return;
    }
    std::fs::write(root.path().join("new.rs"), "fn main() {}\n").unwrap();
    std::process::Command::new("git")
        .args(["remote", "add", "origin", "git@github.com:owner/repo.git"])
        .current_dir(root.path())
        .output()
        .unwrap();
    let info = repo_info(root.path()).unwrap();
    assert_eq!(info.status, "main (dirty)");
    assert_eq!(info.github.as_deref(), Some("owner/repo"));
}

#[test]
fn repo_info_is_none_outside_repository() {
    let root = tempfile::tempdir().unwrap();
    assert!(repo_info(root.path()).is_none());
}