initial commit

exercises/03_ticket_v1/06_ownership/Cargo.toml

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+[package]
+name = "ownership"
+version = "0.1.0"
+edition = "2021"

exercises/03_ticket_v1/06_ownership/src/lib.rs

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+// TODO: based on what we just learned about ownership, it sounds like immutable references
+//   are a good fit for our accessor methods.
+//   Change the existing implementation of `Ticket`'s accessor methods to take a reference
+//   to `self` as an argument, rather than taking ownership of it.
+
+pub struct Ticket {
+    title: String,
+    description: String,
+    status: String,
+}
+
+impl Ticket {
+    pub fn new(title: String, description: String, status: String) -> Ticket {
+        if title.is_empty() {
+            panic!("Title cannot be empty");
+        }
+        if title.len() > 50 {
+            panic!("Title cannot be longer than 50 bytes");
+        }
+        if description.is_empty() {
+            panic!("Description cannot be empty");
+        }
+        if description.len() > 500 {
+            panic!("Description cannot be longer than 500 bytes");
+        }
+        if status != "To-Do" && status != "In Progress" && status != "Done" {
+            panic!("Only `To-Do`, `In Progress`, and `Done` statuses are allowed");
+        }
+
+        Ticket {
+            title,
+            description,
+            status,
+        }
+    }
+
+    pub fn title(self) -> String {
+        self.title
+    }
+
+    pub fn description(self) -> String {
+        self.description
+    }
+
+    pub fn status(self) -> String {
+        self.status
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::Ticket;
+
+    #[test]
+    fn works() {
+        let ticket = Ticket::new("A title".into(), "A description".into(), "To-Do".into());
+        // If you change the signatures as requested, this should compile:
+        // we can call these methods one after the other because they borrow `self`
+        // rather than taking ownership of it.
+        assert_eq!(ticket.title(), "A title");
+        assert_eq!(ticket.description(), "A description");
+        assert_eq!(ticket.status(), "To-Do");
+    }
+}