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: vectorization_tests.rs
    path of file: ./repos/weld/weld/tests
    
    the code of the file until where you have to start completion: //! Tests related to Weld's SIMD vectorizer transformation.

use weld;
use weld::WeldValue;

mod common;
use crate::comm
    
fn fringed_for_vectorizable_loop_with_par() {
    #[allow(dead_code)]
    struct Args {
        x: WeldVec<i32>,
    }

    let code = "|x:vec[i32]|
	let b1 = for(
		simditer(x),
		merger[i32,+],
		|b,i,e:simd[i32]| let a = broadcast(1); let a2 = a + broadcast(1); merge(b, e+a2));
	result(for(fringeiter(x),
		b1,
		|b,i,e| let a = 1; let a2 = a + 1; merge(b, e+a2)
	))";

    let ref conf = many_threads_conf();

    // Large size to invoke parallel runtime + some fringing.
    let size = 10 * 1000 * 1000 + 123;
    let input_vec = vec![1 as i32; size as usize];
    let ref input_data = Args {
        x: WeldVec::from(&input_vec),
    };

    let ret_value = compile_and_run(code, conf, input_data);
    let data = ret_value.data() as *const i32;
    let result = unsafe { (*data).clone() };
    let output = size * 3;
    assert_eq!(result, output);
}