test: Add achievement unlock logic test

tests/achievement.rs

@@ -0,0 +1,75 @@
+use pomomon_garden::features::achievement::AchievementPlugin;
+use pomomon_garden::features::achievement::components::{AchievementId, AchievementProgress};
+use pomomon_garden::features::notification::components::Notifications;
+use pomomon_garden::features::phase::components::SessionTracker;
+use pomomon_garden::prelude::*;
+use strum::IntoEnumIterator;
+
+#[test]
+fn test_achievement_unlock_logic() {
+    let mut app = App::new();
+    app.add_plugins(MinimalPlugins);
+    app.add_plugins(AchievementPlugin);
+    app.insert_resource(Notifications::default()); // Needs to be present because check_achievements uses it
+
+    // Helper to run systems and get progress
+    let mut run_check = |completed_focus: u32, total_berries: u32, total_withered: u32| {
+        app.insert_resource(SessionTracker {
+            completed_focus_phases: completed_focus,
+            total_berries_earned: total_berries,
+            total_plants_withered: total_withered,
+        });
+        app.update(); // Runs check_achievements
+        app.world().resource::<AchievementProgress>().clone()
+    };
+
+    // --- Initial State ---
+    let progress = run_check(0, 0, 0);
+    for id in AchievementId::iter() {
+        assert!(
+            !progress.is_unlocked(&id),
+            "Achievement {:?} should not be unlocked initially",
+            id
+        );
+    }
+
+    // --- First Steps (1 berry) ---
+    let progress = run_check(0, 1, 0);
+    assert!(progress.is_unlocked(&AchievementId::FirstSteps));
+
+    // --- Getting Started (1 focus phase) ---
+    let progress = run_check(1, 1, 0);
+    assert!(progress.is_unlocked(&AchievementId::GettingStarted));
+
+    // --- Negligent (1 withered plant) ---
+    let progress = run_check(1, 1, 1);
+    assert!(progress.is_unlocked(&AchievementId::Negligent));
+
+    // --- Focus Master (10 focus phases) ---
+    let progress = run_check(10, 1, 1);
+    assert!(progress.is_unlocked(&AchievementId::FocusMaster));
+
+    // --- Master Farmer (100 berries) ---
+    let progress = run_check(10, 100, 1);
+    assert!(progress.is_unlocked(&AchievementId::MasterFarmer));
+
+    // --- Zen Master (50 focus phases) ---
+    let progress = run_check(50, 100, 1);
+    assert!(progress.is_unlocked(&AchievementId::ZenMaster));
+
+    // --- Compost King (10 withered plants) ---
+    let progress = run_check(50, 100, 10);
+    assert!(progress.is_unlocked(&AchievementId::CompostKing));
+
+    // --- Berry Tycoon (1000 berries) ---
+    let progress = run_check(50, 1000, 10);
+    assert!(progress.is_unlocked(&AchievementId::BerryTycoon));
+
+    // --- Test idempotency: already unlocked should stay unlocked ---
+    let initial_progress = progress.clone();
+    let progress = run_check(50, 1000, 10);
+    assert_eq!(progress.unlocked.len(), initial_progress.unlocked.len()); // Same number unlocked
+    for id in AchievementId::iter() {
+        assert_eq!(progress.is_unlocked(&id), initial_progress.is_unlocked(&id));
+    }
+}