enums3 solution

exercises/08_enums/enums3.rs

@@ -1,7 +1,5 @@
-// Address all the TODOs to make the tests pass!
-
 enum Message {
-    // TODO: implement the message variant types based on their usage below
+    // TODO: Implement the message variant types based on their usage below.
 }
 
 struct Point {
@@ -26,17 +24,17 @@ impl State {
     }
 
     fn echo(&mut self, s: String) {
-        self.message = s
+        self.message = s;
     }
 
-    fn move_position(&mut self, p: Point) {
-        self.position = p;
+    fn move_position(&mut self, point: Point) {
+        self.position = point;
     }
 
     fn process(&mut self, message: Message) {
-        // TODO: create a match expression to process the different message variants
+        // TODO: Create a match expression to process the different message variants.
         // Remember: When passing a tuple as a function argument, you'll need extra parentheses:
-        // fn function((t, u, p, l, e))
+        // e.g. `foo((t, u, p, l, e))`
     }
 }
 
@@ -54,8 +52,9 @@ mod tests {
             quit: false,
             position: Point { x: 0, y: 0 },
             color: (0, 0, 0),
-            message: "hello world".to_string(),
+            message: String::from("hello world"),
         };
+
         state.process(Message::ChangeColor(255, 0, 255));
         state.process(Message::Echo(String::from("Hello world!")));
         state.process(Message::Move(Point { x: 10, y: 15 }));
@@ -64,7 +63,7 @@ mod tests {
         assert_eq!(state.color, (255, 0, 255));
         assert_eq!(state.position.x, 10);
         assert_eq!(state.position.y, 15);
-        assert_eq!(state.quit, true);
+        assert!(state.quit);
         assert_eq!(state.message, "Hello world!");
     }
 }