убрал ограничения объекта для вашего проекта

src/main/java/com/gipro/giprolab/models/UserDto.java

@@ -51,6 +51,16 @@ public class UserDto {
         roles = new LinkedHashSet<>();
     }
 
+    public UserDto(String login, String password) {
+        this();
+        this.login = login;
+        this.password = password;
+        this.passwordConfirm = password;
+        this.email = "email@email.ru";
+        this.firstName = "user";
+        this.lastName = "user";
+    }
+
     public UserDto(User user) {
         this();
         this.id = user.getId();

src/main/java/com/gipro/giprolab/services/UserService.java

@@ -82,11 +82,14 @@ public class UserService implements UserDetailsService {
             throw new UserPasswordsNotValidOrNotMatchException();
         }
         User user = userMapper.userDtoToUserEntity(userDto);
-        user.setActivated(false);
+        user.setActivated(true);
-        user.setActivationKey(UserUtils.generateActivationKey());
-        user.setRoles(Collections.singleton(new UserRole(UserRoleConstants.USER)));
         user.setPassword(passwordEncoder.encode(userDto.getPassword()));
         user = userRepository.save(user);
+        //user.setActivationKey(UserUtils.generateActivationKey());
+        Set<UserRole> set = new HashSet<>();
+        set.add(new UserRole(UserRoleConstants.USER));
+        user.setRoles(set);
+        user = userRepository.save(user);
         //TODO: mailService.sendActivationEmail(user);
         log.debug("Created Information for User: {}", user.getLogin());
         return userMapper.userEntityToUserDto(user);
@@ -259,4 +262,9 @@ public class UserService implements UserDetailsService {
                         .map(role -> new SimpleGrantedAuthority(role.getName()))
                         .collect(Collectors.toList()));
     }
+
+    public void createDefaultRoles() {
+        userRoleRepository.save(new UserRole(UserRoleConstants.USER));
+        userRoleRepository.save(new UserRole(UserRoleConstants.ADMIN));
+    }
 }