🧪 [testing improvement] Add test for fadeInDelayed

apps/mobile/__tests__/animations.test.ts

@@ -51,4 +51,17 @@ describe('Animation Functions', () => {
       expect(result).toEqual({ type: 'spring', val: 50, config: SpringPresets.gentle });
     });
   });
+
+  describe('fadeInDelayed', () => {
+    test('should call withDelay and withTiming with correct parameters', () => {
+      const targetValue = 1;
+      const delayMs = 300;
+
+      fadeInDelayed(targetValue, delayMs);
+
+      expect(withTiming).toHaveBeenCalledWith(targetValue, TimingPresets.normal);
+      // withTiming mock returns the value itself, so withDelay gets the targetValue as second arg
+      expect(withDelay).toHaveBeenCalledWith(delayMs, targetValue);
+    });
+  });
 });

apps/mobile/jest.setup.js

@@ -6,8 +6,16 @@ jest.mock('react-native-reanimated', () => {
   return {
     useSharedValue: jest.fn(() => ({ value: 0 })),
     useAnimatedStyle: jest.fn(() => ({})),
-    withSpring: jest.fn((val) => val),
-    withTiming: jest.fn((val) => val),
+    withSpring: jest.fn((val, config) => val),
+    withTiming: jest.fn((val, config) => val),
+    withDelay: jest.fn((delay, val) => val),
+    withSequence: jest.fn((...args) => args),
+    Easing: {
+      out: jest.fn((val) => val),
+      inOut: jest.fn((val) => val),
+      quad: 'quad',
+      cubic: 'cubic',
+    },
     createAnimatedComponent: jest.fn((Component) => Component),
     default: {
       View: 'View',