You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: line_coverage.rs
    path of file: ./repos/tarpaulin/tests
    
    the code of the file until where you have to start completion: use crate::utils::get_test_path;
use cargo_tarpaulin::config::{Color, Config};
use cargo_tarpaulin::traces::CoverageStat;
use cargo_tarpaulin::{launch_tarpaulin, setup_logging};
use rusty_fork::rusty_fork_test;
use std::env;
use std::time::Duration;

rusty_fork_test! {

#[test]
fn simple_project_coverage() {
    setup_logging(
    
fn test_threads_1() {
    setup_logging(Color::Never, false, false);
    let mut config = Config::default();
    config.set_clean(false);
    let restore_dir = env::current_dir().unwrap();
    let test_dir = get_test_path("simple_project");
    env::set_current_dir(&test_dir).unwrap();
    let mut manifest = test_dir.clone();
    manifest.push("Cargo.toml");
    config.set_manifest(manifest);
    config.varargs.push("--test-threads".to_string());
    config.varargs.push("1".to_string());

    let (res, ret) = launch_tarpaulin(&config, &None).unwrap();
    assert_eq!(ret, 0);
    assert!(!res.is_empty());
    env::set_current_dir(restore_dir).unwrap();

    let lib_file = test_dir.join("src/lib.rs");
    let lib_traces = res.get_child_traces(&lib_file);
    for l in lib_traces {
        if l.line == 6 {
            assert_eq!(CoverageStat::Line(0), l.stats);
        } else if l.line == 8 {
            assert!(matches!(l.stats, CoverageStat::Line(c) if c > 0 ));
        }
    }
}