linecheck 1.0.0

A fast, configurable tool that warns or errors when files exceed a set line count
Documentation 
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use std::process::Command;

fn bin() -> Command {
    Command::new(env!("CARGO_BIN_EXE_linecheck"))
}

#[test]
fn status_mode_runs_without_error() {
    let tmp = tempfile::TempDir::new().unwrap();
    std::fs::write(tmp.path().join("a.rs"), "fn main() {}\n").unwrap();
    let out = bin().arg("--status").arg(tmp.path()).output().unwrap();
    assert!(
        out.status.success(),
        "stderr: {}",
        String::from_utf8_lossy(&out.stderr)
    );
}

#[test]
fn json_mode_empty_prints_brackets() {
    let tmp = tempfile::TempDir::new().unwrap();
    std::fs::write(tmp.path().join("a.rs"), "fn main() {}\n").unwrap();
    let out = bin().arg("--json").arg(tmp.path()).output().unwrap();
    assert!(out.status.success());
    let stdout = String::from_utf8_lossy(&out.stdout);
    assert!(
        stdout.contains("[]") || stdout.contains("[{") || stdout.contains("[\n"),
        "expected JSON output: {stdout}"
    );
}

#[test]
fn json_status_mode_runs() {
    let tmp = tempfile::TempDir::new().unwrap();
    std::fs::write(tmp.path().join("a.rs"), "fn main() {}\n").unwrap();
    let out = bin()
        .args(["--json", "--status"])
        .arg(tmp.path())
        .output()
        .unwrap();
    assert!(
        out.status.success(),
        "stderr: {}",
        String::from_utf8_lossy(&out.stderr)
    );
    let stdout = String::from_utf8_lossy(&out.stdout);
    assert!(stdout.contains('['), "expected JSON array: {stdout}");
}

#[test]
fn preset_strict_exits_one_for_large_file() {
    let tmp = tempfile::TempDir::new().unwrap();
    let content = (0..110).map(|i| format!("line{i}\n")).collect::<String>();
    std::fs::write(tmp.path().join("big.rs"), &content).unwrap();
    let out = bin()
        .current_dir(tmp.path())
        .arg("--strict")
        .arg(".")
        .output()
        .unwrap();
    assert_eq!(out.status.code(), Some(1));
}

#[test]
fn preset_default_flag_runs() {
    let tmp = tempfile::TempDir::new().unwrap();
    std::fs::write(tmp.path().join("a.rs"), "fn main() {}\n").unwrap();
    let out = bin()
        .current_dir(tmp.path())
        .arg("--default")
        .arg(".")
        .output()
        .unwrap();
    assert!(
        out.status.success(),
        "stderr: {}",
        String::from_utf8_lossy(&out.stderr)
    );
}