Count pairs that form a complete day i

#[test]
fn test_all_24() {
    let start = std::time::Instant::now();
    let val = Solution::count_complete_day_pairs(vec![24, 48, 72, 96]);
    let expected = 6;
    log_result!(val == expected, "test_all_24", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn test_complement_pairs() {
    let start = std::time::Instant::now();
    let val = Solution::count_complete_day_pairs(vec![6, 18]);
    let expected = 1;
    log_result!(val == expected, "test_complement_pairs", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn test_example1() {
    let start = std::time::Instant::now();
    let val = Solution::count_complete_day_pairs(vec![12, 12, 30, 24, 24]);
    let expected = 2;
    log_result!(val == expected, "test_example1", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn test_example2() {
    let start = std::time::Instant::now();
    let val = Solution::count_complete_day_pairs(vec![72, 48, 24, 3]);
    let expected = 3;
    log_result!(val == expected, "test_example2", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn test_mixed() {
    let start = std::time::Instant::now();
    let val = Solution::count_complete_day_pairs(vec![1, 23, 2, 22]);
    let expected = 2;
    log_result!(val == expected, "test_mixed", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn test_no_pairs() {
    let start = std::time::Instant::now();
    let val = Solution::count_complete_day_pairs(vec![1, 2, 3]);
    let expected = 0;
    log_result!(val == expected, "test_no_pairs", start, &expected, &val);
    assert_eq!(val, expected);
}

#[test]
fn test_single() {
    let start = std::time::Instant::now();
    let val = Solution::count_complete_day_pairs(vec![24]);
    let expected = 0;
    log_result!(val == expected, "test_single", start, &expected, &val);
    assert_eq!(val, expected);
}