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diff --git a/rustlings/exercises/23_conversions/from_into.rs b/rustlings/exercises/23_conversions/from_into.rs
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-// The `From` trait is used for value-to-value conversions. If `From` is
-// implemented, an implementation of `Into` is automatically provided.
-// You can read more about it in the documentation:
-// https://doc.rust-lang.org/std/convert/trait.From.html
-
-#[derive(Debug)]
-struct Person {
- name: String,
- age: u8,
-}
-
-// We implement the Default trait to use it as a fallback when the provided
-// string is not convertible into a `Person` object.
-impl Default for Person {
- fn default() -> Self {
- Self {
- name: String::from("John"),
- age: 30,
- }
- }
-}
-
-// TODO: Complete this `From` implementation to be able to parse a `Person`
-// out of a string in the form of "Mark,20".
-// Note that you'll need to parse the age component into a `u8` with something
-// like `"4".parse::<u8>()`.
-//
-// Steps:
-// 1. Split the given string on the commas present in it.
-// 2. If the split operation returns less or more than 2 elements, return the
-// default of `Person`.
-// 3. Use the first element from the split operation as the name.
-// 4. If the name is empty, return the default of `Person`.
-// 5. Parse the second element from the split operation into a `u8` as the age.
-// 6. If parsing the age fails, return the default of `Person`.
-impl From<&str> for Person {
- fn from(s: &str) -> Self {}
-}
-
-fn main() {
- // Use the `from` function.
- let p1 = Person::from("Mark,20");
- println!("{p1:?}");
-
- // Since `From` is implemented for Person, we are able to use `Into`.
- let p2: Person = "Gerald,70".into();
- println!("{p2:?}");
-}
-
-#[cfg(test)]
-mod tests {
- use super::*;
-
- #[test]
- fn test_default() {
- let dp = Person::default();
- assert_eq!(dp.name, "John");
- assert_eq!(dp.age, 30);
- }
-
- #[test]
- fn test_bad_convert() {
- let p = Person::from("");
- assert_eq!(p.name, "John");
- assert_eq!(p.age, 30);
- }
-
- #[test]
- fn test_good_convert() {
- let p = Person::from("Mark,20");
- assert_eq!(p.name, "Mark");
- assert_eq!(p.age, 20);
- }
-
- #[test]
- fn test_bad_age() {
- let p = Person::from("Mark,twenty");
- assert_eq!(p.name, "John");
- assert_eq!(p.age, 30);
- }
-
- #[test]
- fn test_missing_comma_and_age() {
- let p: Person = Person::from("Mark");
- assert_eq!(p.name, "John");
- assert_eq!(p.age, 30);
- }
-
- #[test]
- fn test_missing_age() {
- let p: Person = Person::from("Mark,");
- assert_eq!(p.name, "John");
- assert_eq!(p.age, 30);
- }
-
- #[test]
- fn test_missing_name() {
- let p: Person = Person::from(",1");
- assert_eq!(p.name, "John");
- assert_eq!(p.age, 30);
- }
-
- #[test]
- fn test_missing_name_and_age() {
- let p: Person = Person::from(",");
- assert_eq!(p.name, "John");
- assert_eq!(p.age, 30);
- }
-
- #[test]
- fn test_missing_name_and_invalid_age() {
- let p: Person = Person::from(",one");
- assert_eq!(p.name, "John");
- assert_eq!(p.age, 30);
- }
-
- #[test]
- fn test_trailing_comma() {
- let p: Person = Person::from("Mike,32,");
- assert_eq!(p.name, "John");
- assert_eq!(p.age, 30);
- }
-
- #[test]
- fn test_trailing_comma_and_some_string() {
- let p: Person = Person::from("Mike,32,dog");
- assert_eq!(p.name, "John");
- assert_eq!(p.age, 30);
- }
-}