From 40e2330e8dd0ea3bde6cee0e8861ed81f8c9e7a6 Mon Sep 17 00:00:00 2001
From: Silvestre Abruzzo <1209694+SAbruzzo@users.noreply.github.com>
Date: Mon, 25 Jul 2022 08:57:07 +0200
Subject: [PATCH] feat: add structs4.rs exercise
---
exercises/structs/structs4.rs | 62 +++++++++++++++++++++++++++++++++++
info.toml | 10 ++++++
2 files changed, 72 insertions(+)
create mode 100644 exercises/structs/structs4.rs
diff --git a/exercises/structs/structs4.rs b/exercises/structs/structs4.rs
new file mode 100644
index 0000000000..202997a53a
--- /dev/null
+++ b/exercises/structs/structs4.rs
@@ -0,0 +1,62 @@
+// structs4.rs
+// Structs can have methods and the first parameter is always self. In this exercise
+// we have defined the Planet struct and we want to test some logic attached to it,
+// make the code compile and the tests pass! If you have issues execute `rustlings hint structs4`
+
+// I AM NOT DONE
+
+#[derive(Debug)]
+struct Planet {
+ has_life: bool,
+ radius : u32
+}
+
+impl Planet {
+ fn new(radius: u32) -> Planet {
+ // Something goes here...
+ }
+
+ fn has_life(???) -> bool {
+ // Something goes here...
+ }
+
+ fn change_radius(???) {
+ // Something goes here...
+ }
+
+ fn create_life(???) {
+ // Something goes here...
+ }
+}
+
+#[cfg(test)]
+mod tests {
+ use super::*;
+
+ #[test]
+ fn create_planet() {
+
+ let planet = Planet::new(1000);
+
+ assert_eq!(planet.radius, 1000);
+ assert_eq!(planet.has_life(), false);
+ }
+
+ #[test]
+ fn add_life_to_planet() {
+ let planet = Planet::new(1000);
+
+ planet.create_life();
+
+ assert_eq!(planet.has_life(), true);
+ }
+
+ #[test]
+ fn change_radius_of_planet() {
+ let mut planet = Planet::new(1000);
+
+ planet.change_radius(2000);
+
+ assert_eq!(planet.radius, 2000);
+ }
+}
diff --git a/info.toml b/info.toml
index f07b9267c9..b72b2c8cba 100644
--- a/info.toml
+++ b/info.toml
@@ -394,6 +394,16 @@ For calculate_transport_fees: Bigger is more expensive usually, we don't have si
Have a look in The Book, to find out more about method implementations: https://doc.rust-lang.org/book/ch05-03-method-syntax.html"""
+[[exercises]]
+name = "structs4"
+path = "exercises/structs/structs4.rs"
+mode = "test"
+hint = """
+The signature of methods must be different depending on the fact that attributes of an instance are
+read or written. How do we do that in Rust?
+
+Have a look in The Book, to find out more about method implementations: https://doc.rust-lang.org/book/ch05-03-method-syntax.html"""
+
# ENUMS
[[exercises]]