Introduce pluggable email and image upload

src/test/java/com/openisle/controller/AuthControllerTest.java

@@ -1,7 +1,7 @@
 package com.openisle.controller;
 
 import com.openisle.model.User;
-import com.openisle.service.EmailService;
+import com.openisle.service.EmailSender;
 import com.openisle.service.JwtService;
 import com.openisle.service.UserService;
 import org.junit.jupiter.api.Test;
@@ -33,7 +33,7 @@ class AuthControllerTest {
     @MockBean
     private JwtService jwtService;
     @MockBean
-    private EmailService emailService;
+    private EmailSender emailService;
 
     @Test
     void registerSendsEmail() throws Exception {

src/test/java/com/openisle/controller/CategoryControllerTest.java

@@ -0,0 +1,59 @@
+package com.openisle.controller;
+
+import com.openisle.model.Category;
+import com.openisle.service.CategoryService;
+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.http.MediaType;
+import org.springframework.test.web.servlet.MockMvc;
+
+import java.util.List;
+
+import static org.mockito.ArgumentMatchers.eq;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
+
+@WebMvcTest(CategoryController.class)
+@AutoConfigureMockMvc(addFilters = false)
+class CategoryControllerTest {
+    @Autowired
+    private MockMvc mockMvc;
+
+    @MockBean
+    private CategoryService categoryService;
+
+    @Test
+    void createAndGetCategory() throws Exception {
+        Category c = new Category();
+        c.setId(1L);
+        c.setName("tech");
+        Mockito.when(categoryService.createCategory(eq("tech"))).thenReturn(c);
+        Mockito.when(categoryService.getCategory(1L)).thenReturn(c);
+
+        mockMvc.perform(post("/api/categories")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content("{\"name\":\"tech\"}"))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.name").value("tech"));
+
+        mockMvc.perform(get("/api/categories/1"))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.id").value(1));
+    }
+
+    @Test
+    void listCategories() throws Exception {
+        Category c = new Category();
+        c.setId(2L);
+        c.setName("life");
+        Mockito.when(categoryService.listCategories()).thenReturn(List.of(c));
+
+        mockMvc.perform(get("/api/categories"))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$[0].name").value("life"));
+    }
+}

src/test/java/com/openisle/controller/UserControllerTest.java

@@ -0,0 +1,60 @@
+package com.openisle.controller;
+
+import com.openisle.model.User;
+import com.openisle.service.ImageUploader;
+import com.openisle.service.UserService;
+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.http.MediaType;
+import org.springframework.mock.web.MockMultipartFile;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.test.web.servlet.MockMvc;
+
+import java.util.Optional;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
+
+@WebMvcTest(UserController.class)
+@AutoConfigureMockMvc(addFilters = false)
+class UserControllerTest {
+    @Autowired
+    private MockMvc mockMvc;
+
+    @MockBean
+    private UserService userService;
+    @MockBean
+    private ImageUploader imageUploader;
+
+    @Test
+    void getCurrentUser() throws Exception {
+        User u = new User();
+        u.setId(1L);
+        u.setUsername("alice");
+        u.setEmail("a@b.com");
+        u.setAvatar("http://x/avatar.png");
+        Mockito.when(userService.findByUsername("alice")).thenReturn(Optional.of(u));
+
+        mockMvc.perform(get("/api/users/me").principal(new UsernamePasswordAuthenticationToken("alice","p")))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.avatar").value("http://x/avatar.png"));
+    }
+
+    @Test
+    void uploadAvatar() throws Exception {
+        MockMultipartFile file = new MockMultipartFile("file", "a.png", MediaType.IMAGE_PNG_VALUE, "img".getBytes());
+        Mockito.when(imageUploader.upload(any(), eq("a.png"))).thenReturn("http://img/a.png");
+
+        mockMvc.perform(multipart("/api/users/me/avatar").file(file).principal(new UsernamePasswordAuthenticationToken("alice","p")))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.url").value("http://img/a.png"));
+
+        Mockito.verify(userService).updateAvatar("alice", "http://img/a.png");
+    }
+}

src/test/java/com/openisle/integration/ComplexFlowIntegrationTest.java

@@ -3,7 +3,7 @@ package com.openisle.integration;
 import com.openisle.model.User;
 import com.openisle.model.Role;
 import com.openisle.repository.UserRepository;
-import com.openisle.service.EmailService;
+import com.openisle.service.EmailSender;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
@@ -26,7 +26,7 @@ class ComplexFlowIntegrationTest {
     private UserRepository users;
 
     @MockBean
-    private EmailService emailService;
+    private EmailSender emailService;
 
     private String registerAndLogin(String username, String email) {
         HttpHeaders h = new HttpHeaders();

src/test/java/com/openisle/service/CosImageUploaderTest.java

@@ -0,0 +1,14 @@
+package com.openisle.service;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class CosImageUploaderTest {
+    @Test
+    void uploadReturnsUrl() {
+        CosImageUploader uploader = new CosImageUploader("http://cos.example.com");
+        String url = uploader.upload("data".getBytes(), "img.png");
+        assertEquals("http://cos.example.com/img.png", url);
+    }
+}