优化目录结构

backend/src/test/java/com/openisle/controller/StatControllerTest.java

@@ -0,0 +1,74 @@
+package com.openisle.controller;
+
+import com.openisle.config.CustomAccessDeniedHandler;
+import com.openisle.config.SecurityConfig;
+import com.openisle.service.JwtService;
+import com.openisle.repository.UserRepository;
+import com.openisle.service.UserVisitService;
+import com.openisle.model.Role;
+import com.openisle.model.User;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.web.servlet.MockMvc;
+
+import java.util.Optional;
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+@WebMvcTest(StatController.class)
+@AutoConfigureMockMvc
+@Import({SecurityConfig.class, CustomAccessDeniedHandler.class})
+class StatControllerTest {
+    @Autowired
+    private MockMvc mockMvc;
+
+    @MockBean
+    private JwtService jwtService;
+    @MockBean
+    private UserRepository userRepository;
+    @MockBean
+    private UserVisitService userVisitService;
+
+    @Test
+    void dauReturnsCount() throws Exception {
+        Mockito.when(jwtService.validateAndGetSubject("token")).thenReturn("user");
+        User user = new User();
+        user.setUsername("user");
+        user.setPassword("p");
+        user.setEmail("u@example.com");
+        user.setRole(Role.USER);
+        Mockito.when(userRepository.findByUsername("user")).thenReturn(Optional.of(user));
+        Mockito.when(userVisitService.countDau(Mockito.any())).thenReturn(3L);
+
+        mockMvc.perform(get("/api/stats/dau").header("Authorization", "Bearer token"))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.dau").value(3));
+    }
+
+    @Test
+    void dauRangeReturnsSeries() throws Exception {
+        Mockito.when(jwtService.validateAndGetSubject("token")).thenReturn("user");
+        User user = new User();
+        user.setUsername("user");
+        user.setPassword("p");
+        user.setEmail("u@example.com");
+        user.setRole(Role.USER);
+        Mockito.when(userRepository.findByUsername("user")).thenReturn(Optional.of(user));
+        java.util.Map<java.time.LocalDate, Long> map = new java.util.LinkedHashMap<>();
+        map.put(java.time.LocalDate.now().minusDays(1), 1L);
+        map.put(java.time.LocalDate.now(), 2L);
+        Mockito.when(userVisitService.countDauRange(Mockito.any(), Mockito.any())).thenReturn(map);
+
+        mockMvc.perform(get("/api/stats/dau-range").param("days", "2").header("Authorization", "Bearer token"))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$[0].value").value(1))
+                .andExpect(jsonPath("$[1].value").value(2));
+    }
+}