diff --git a/src/store/slices/deviceSlice.test.js b/src/store/slices/deviceSlice.test.js
index f17eae0b..f91adc83 100644
--- a/src/store/slices/deviceSlice.test.js
+++ b/src/store/slices/deviceSlice.test.js
@@ -7,26 +7,49 @@
  * 3. selector 函数测试
  */
 
-import deviceReducer, { updateScreenSize, selectIsMobile } from './deviceSlice';
+import deviceReducer, {
+  updateScreenSize,
+  selectIsMobile,
+  selectIsTablet,
+  selectIsDesktop,
+  selectDeviceType,
+  DeviceType,
+} from './deviceSlice';
 
 describe('deviceSlice', () => {
   describe('reducer', () => {
     it('should return the initial state', () => {
       const initialState = deviceReducer(undefined, { type: '@@INIT' });
       expect(initialState).toHaveProperty('isMobile');
+      expect(initialState).toHaveProperty('isTablet');
+      expect(initialState).toHaveProperty('isDesktop');
+      expect(initialState).toHaveProperty('deviceType');
       expect(typeof initialState.isMobile).toBe('boolean');
+      expect(typeof initialState.isTablet).toBe('boolean');
+      expect(typeof initialState.isDesktop).toBe('boolean');
+      expect(typeof initialState.deviceType).toBe('string');
     });
 
     it('should handle updateScreenSize', () => {
       // 模拟初始状态
-      const initialState = { isMobile: false };
+      const initialState = {
+        isMobile: false,
+        isTablet: false,
+        isDesktop: true,
+        deviceType: DeviceType.DESKTOP,
+      };
 
-      // 执行 action（注意：实际 isMobile 值由 detectIsMobile() 决定）
+      // 执行 action（注意：实际值由 detectDeviceType() 决定）
       const newState = deviceReducer(initialState, updateScreenSize());
 
       // 验证状态结构
       expect(newState).toHaveProperty('isMobile');
+      expect(newState).toHaveProperty('isTablet');
+      expect(newState).toHaveProperty('isDesktop');
+      expect(newState).toHaveProperty('deviceType');
       expect(typeof newState.isMobile).toBe('boolean');
+      expect(typeof newState.isTablet).toBe('boolean');
+      expect(typeof newState.isDesktop).toBe('boolean');
     });
   });
 
@@ -35,22 +58,48 @@ describe('deviceSlice', () => {
       const mockState = {
         device: {
           isMobile: true,
+          isTablet: false,
+          isDesktop: false,
+          deviceType: DeviceType.MOBILE,
         },
       };
 
-      const result = selectIsMobile(mockState);
-      expect(result).toBe(true);
+      expect(selectIsMobile(mockState)).toBe(true);
+      expect(selectIsTablet(mockState)).toBe(false);
+      expect(selectIsDesktop(mockState)).toBe(false);
+      expect(selectDeviceType(mockState)).toBe(DeviceType.MOBILE);
     });
 
-    it('selectIsMobile should return false for desktop', () => {
+    it('selectIsTablet should return correct value', () => {
       const mockState = {
         device: {
           isMobile: false,
+          isTablet: true,
+          isDesktop: false,
+          deviceType: DeviceType.TABLET,
         },
       };
 
-      const result = selectIsMobile(mockState);
-      expect(result).toBe(false);
+      expect(selectIsMobile(mockState)).toBe(false);
+      expect(selectIsTablet(mockState)).toBe(true);
+      expect(selectIsDesktop(mockState)).toBe(false);
+      expect(selectDeviceType(mockState)).toBe(DeviceType.TABLET);
+    });
+
+    it('selectIsDesktop should return correct value', () => {
+      const mockState = {
+        device: {
+          isMobile: false,
+          isTablet: false,
+          isDesktop: true,
+          deviceType: DeviceType.DESKTOP,
+        },
+      };
+
+      expect(selectIsMobile(mockState)).toBe(false);
+      expect(selectIsTablet(mockState)).toBe(false);
+      expect(selectIsDesktop(mockState)).toBe(true);
+      expect(selectDeviceType(mockState)).toBe(DeviceType.DESKTOP);
     });
   });
 
@@ -60,4 +109,12 @@ describe('deviceSlice', () => {
       expect(action.type).toBe('device/updateScreenSize');
     });
   });
+
+  describe('DeviceType constants', () => {
+    it('should have correct values', () => {
+      expect(DeviceType.MOBILE).toBe('mobile');
+      expect(DeviceType.TABLET).toBe('tablet');
+      expect(DeviceType.DESKTOP).toBe('desktop');
+    });
+  });
 });