Minimum operations to exceed threshold value i

#[test]
fn t1() {
    let start = std::time::Instant::now();
    let val = Solution::min_operations(vec![2, 11, 10, 1, 3], 10);
    let expected = 3;
    log_result!(val == expected, "t1", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn t2() {
    let start = std::time::Instant::now();
    let val = Solution::min_operations(vec![1, 1, 2, 4, 9], 1);
    let expected = 0;
    log_result!(val == expected, "t2", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn t3() {
    let start = std::time::Instant::now();
    let val = Solution::min_operations(vec![1, 1, 2, 4, 9], 9);
    let expected = 4;
    log_result!(val == expected, "t3", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn t4() {
    let start = std::time::Instant::now();
    let val = Solution::min_operations(vec![5], 5);
    let expected = 0;
    log_result!(val == expected, "t4", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn t5() {
    let start = std::time::Instant::now();
    let val = Solution::min_operations(vec![1, 2, 3], 10);
    let expected = 3;
    log_result!(val == expected, "t5", start, &expected, &val);
    assert_eq!(val, expected);
}