89.2. Test list - pagination. return page (#10)

support-portal-backend/src/main/java/net/shyshkin/study/fullstack/supportportal/backend/controller/UserResource.java

@@ -8,6 +8,7 @@ import net.shyshkin.study.fullstack.supportportal.backend.domain.User;
 import net.shyshkin.study.fullstack.supportportal.backend.domain.dto.UserDto;
 import net.shyshkin.study.fullstack.supportportal.backend.service.UserService;
 import net.shyshkin.study.fullstack.supportportal.backend.utility.JwtTokenProvider;
+import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -20,7 +21,6 @@ import org.springframework.web.multipart.MultipartFile;
 
 import javax.validation.Valid;
 import java.io.IOException;
-import java.util.List;
 
 import static org.springframework.http.HttpStatus.OK;
 
@@ -80,7 +80,7 @@ public class UserResource {
     }
 
     @GetMapping
-    public List<User> getAllUsers(Pageable pageable) {
+    public Page<User> getAllUsers(Pageable pageable) {
         return userService.findAll(pageable);
     }
 

support-portal-backend/src/main/java/net/shyshkin/study/fullstack/supportportal/backend/service/UserService.java

@@ -2,18 +2,18 @@ package net.shyshkin.study.fullstack.supportportal.backend.service;
 
 import net.shyshkin.study.fullstack.supportportal.backend.domain.User;
 import net.shyshkin.study.fullstack.supportportal.backend.domain.dto.UserDto;
+import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.security.core.userdetails.UserDetailsService;
 import org.springframework.web.multipart.MultipartFile;
 
 import java.io.IOException;
-import java.util.List;
 
 public interface UserService extends UserDetailsService {
 
     User register(String firstName, String lastName, String username, String email);
 
-    List<User> findAll(Pageable pageable);
+    Page<User> findAll(Pageable pageable);
 
     User findByUsername(String username);
 

support-portal-backend/src/main/java/net/shyshkin/study/fullstack/supportportal/backend/service/UserServiceImpl.java

@@ -15,6 +15,7 @@ import net.shyshkin.study.fullstack.supportportal.backend.repository.UserReposit
 import org.apache.commons.lang3.RandomStringUtils;
 import org.springframework.boot.web.client.RestTemplateBuilder;
 import org.springframework.core.ParameterizedTypeReference;
+import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.http.MediaType;
 import org.springframework.http.RequestEntity;
@@ -33,7 +34,6 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.time.LocalDateTime;
-import java.util.List;
 import java.util.Objects;
 import java.util.UUID;
 
@@ -127,8 +127,8 @@ public class UserServiceImpl implements UserService {
     }
 
     @Override
-    public List<User> findAll(Pageable pageable) {
-        return userRepository.findAll(pageable).getContent();
+    public Page<User> findAll(Pageable pageable) {
+        return userRepository.findAll(pageable);
     }
 
     @Override

support-portal-backend/src/test/java/net/shyshkin/study/fullstack/supportportal/backend/controller/UserResourceUnSecureTest.java

@@ -1,5 +1,6 @@
 package net.shyshkin.study.fullstack.supportportal.backend.controller;
 
+import lombok.Data;
 import lombok.extern.slf4j.Slf4j;
 import net.shyshkin.study.fullstack.supportportal.backend.common.BaseUserTest;
 import net.shyshkin.study.fullstack.supportportal.backend.constant.FileConstant;
@@ -490,18 +491,30 @@ class UserResourceUnSecureTest extends BaseUserTest {
         void getAllUsers() {
 
             //when
-            var responseEntity = restTemplate.exchange("/user", HttpMethod.GET, null, new ParameterizedTypeReference<List<User>>() {
-            });
+            var responseEntity = restTemplate.exchange("/user", HttpMethod.GET, null, UserPage.class);
 
             //then
             log.debug("Response Entity: {}", responseEntity);
             assertThat(responseEntity.getStatusCode()).isEqualTo(OK);
             assertThat(responseEntity.getBody())
-                    .isNotNull()
+                    .isNotNull();
+            assertThat(responseEntity.getBody().getContent())
                     .hasSizeGreaterThan(2);
         }
     }
 
+    @Data
+    static class UserPage {
+        private List<User> content;
+        private boolean last;
+        private boolean first;
+        private int totalElements;
+        private int size;
+        private int numberOfElements;
+        private int number;
+        private boolean empty;
+    }
+
     @Nested
     class ResetPasswordTests {