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: issue-63.rs
    path of file: ./repos/obj-rs/obj-rs/tests
    
    the code of the file until where you have to start completion: use obj::load_obj;
use std::io::Cursor;

fn do_test<V: obj::FromRawVertex<u8> + std::fmt::Debug>(test_case: &str) {
    let err = load_obj::<V, _, _>(Cursor::new(test_case))
        .expect_err("Should error out due to index out of bounds");
    if let obj::ObjError::Load(err) = err {
        let expected_error = obj::LoadError::new(
            obj::LoadErrorKind::IndexOutOfRange,
            "Una
    
fn issue_63() {
    let mut test_case: String = "o LargeObj\n".into();
    for i in 0..1000 {
        test_case.push_str(format!("v {i}.0 {i}.0 {i}.0\n").as_str());
    }
    test_case.push_str("vt 0.0 0.0\nvn 0.0 0.0 1.0\n");
    for i in 0..(1000 - 2) {
        let i = i + 1;
        let j = i + 1;
        let k = i + 2;
        test_case.push_str(format!("f {i}/1/1 {j}/1/1 {k}/1/1\n").as_str())
    }

    load_obj::<obj::TexturedVertex, _, u16>(Cursor::new(&test_case))
        .expect("this should load properly");

    do_test::<obj::Position>(&test_case);
    do_test::<obj::Vertex>(&test_case);
    do_test::<obj::TexturedVertex>(&test_case);
}