use malachite_base::nevers::Never;
use malachite_base::options::{option_from_str, option_from_str_custom};
use malachite_base::orderings::ordering_from_str;
use std::cmp::Ordering;
use std::fmt::Debug;
use std::str::FromStr;
#[allow(clippy::needless_pass_by_value)]
fn option_from_str_helper<T: Debug + Eq + FromStr>(s: &str, out: Option<Option<T>>) {
assert_eq!(option_from_str(s), out);
}
#[test]
fn test_option_from_str() {
option_from_str_helper::<bool>("Some(false)", Some(Some(false)));
option_from_str_helper::<u32>("Some(5)", Some(Some(5)));
option_from_str_helper::<Never>("None", Some(None));
option_from_str_helper::<u32>("Some(hi)", None);
option_from_str_helper::<bool>("abc", None);
}
#[allow(clippy::needless_pass_by_value)]
fn option_from_str_custom_helper<T: Debug + Eq>(
f: &dyn Fn(&str) -> Option<T>,
s: &str,
out: Option<Option<T>>,
) {
assert_eq!(option_from_str_custom(f, s), out);
}
#[test]
fn test_option_from_str_custom() {
option_from_str_custom_helper(&ordering_from_str, "Some(Less)", Some(Some(Ordering::Less)));
option_from_str_custom_helper(
&option_from_str,
"Some(Some(false))",
Some(Some(Some(false))),
);
option_from_str_custom_helper(&option_from_str::<bool>, "Some(None)", Some(Some(None)));
option_from_str_custom_helper(&option_from_str::<bool>, "None", Some(None));
option_from_str_custom_helper(&ordering_from_str, "Some(hi)", None);
option_from_str_custom_helper(&ordering_from_str, "abc", None);
}