A bunch of work on unit testing

src/dynamic_data/models/pokemon.rs

@@ -45,7 +45,7 @@ pub struct Pokemon {
     display_form: Option<Arc<Form>>,
 
     /// The current level of the Pokemon.
-    level: LevelInt,
+    level: Atomic<LevelInt>,
     /// The amount of experience of the Pokemon.
     experience: AtomicU32,
     /// A unique random number for this Pokemon.
@@ -151,7 +151,7 @@ impl Pokemon {
             form: RwLock::new(form.clone()),
             display_species: None,
             display_form: None,
-            level,
+            level: Atomic::new(level),
             experience: AtomicU32::new(experience),
             unique_identifier,
             gender: RwLock::new(gender),
@@ -218,7 +218,7 @@ impl Pokemon {
     }
     /// The current level of the Pokemon.
     pub fn level(&self) -> LevelInt {
-        self.level
+        self.level.load(Ordering::Relaxed)
     }
     /// The amount of experience of the Pokemon.
     pub fn experience(&self) -> u32 {
@@ -705,6 +705,21 @@ impl Pokemon {
     pub fn clear_status(&self) {
         self.status_script.clear()
     }
+
+    /// Increases the level by a certain amount
+    pub fn change_level_by(&self, amount: LevelInt) {
+        self.level
+            .fetch_update(Ordering::SeqCst, Ordering::Relaxed, |x| {
+                let max_level = self.library().static_data().settings().maximum_level();
+                if x + amount > max_level {
+                    Some(max_level)
+                } else {
+                    Some(x + amount)
+                }
+            })
+            .expect("Failed to change level.");
+        self.recalculate_flat_stats();
+    }
 }
 
 /// The data of the Pokemon related to being in a battle.