#[derive(Debug, Eq, PartialEq)]
pub struct User {
name: Option<String>,
email: Option<String>,
}
impl User {
#[inline]
#[must_use]
pub fn new(name: Option<&str>, email: Option<&str>) -> Self {
Self {
email: email.map(String::from),
name: name.map(String::from),
}
}
#[inline]
#[must_use]
pub const fn name(&self) -> &Option<String> {
&self.name
}
#[inline]
#[must_use]
pub const fn email(&self) -> &Option<String> {
&self.email
}
#[inline]
#[must_use]
pub const fn is_some(&self) -> bool {
self.name.is_some() || self.email.is_some()
}
#[inline]
#[must_use]
pub const fn is_none(&self) -> bool {
self.name.is_none() && self.email.is_none()
}
}
impl ToString for User {
#[inline]
fn to_string(&self) -> String {
if let Some(name) = self.name.as_ref() {
if let Some(email) = self.email.as_ref() {
format!("{} <{}>", name, email)
}
else {
String::from(name)
}
}
else if let Some(email) = self.email.as_ref() {
format!("<{}>", email)
}
else {
String::from("")
}
}
}
#[cfg(test)]
mod tests {
use rstest::rstest;
use super::*;
#[test]
fn name() {
let user = User::new(Some("name"), None);
assert_eq!(user.name(), &Some(String::from("name")));
}
#[test]
fn email() {
let user = User::new(None, Some("email"));
assert_eq!(user.email(), &Some(String::from("email")));
}
#[rstest]
#[case(None, None, false)]
#[case(Some("name"), None, true)]
#[case(None, Some("email"), true)]
#[case(Some("email"), Some("email"), true)]
fn is_some(#[case] name: Option<&str>, #[case] email: Option<&str>, #[case] expected: bool) {
assert_eq!(User::new(name, email).is_some(), expected);
}
#[rstest]
#[case(None, None, true)]
#[case(Some("name"), None, false)]
#[case(None, Some("email"), false)]
#[case(Some("email"), Some("email"), false)]
fn is_none(#[case] name: Option<&str>, #[case] email: Option<&str>, #[case] expected: bool) {
assert_eq!(User::new(name, email).is_none(), expected);
}
#[test]
fn to_string_with_none_name_and_none_email() {
let user = User::new(None, None);
assert_eq!(user.to_string(), "");
}
#[test]
fn to_string_with_none_name_and_some_email() {
let user = User::new(None, Some("me@example.com"));
assert_eq!(user.to_string(), "<me@example.com>");
}
#[test]
fn to_string_with_some_name_and_none_email() {
let user = User::new(Some("Tim Oram"), None);
assert_eq!(user.to_string(), "Tim Oram");
}
#[test]
fn to_string_with_some_name_and_some_email() {
let user = User::new(Some("Tim Oram"), Some("me@example.com"));
assert_eq!(user.to_string(), "Tim Oram <me@example.com>");
}
}