feat: created a random generator

Author: joaov1ct0r

src/main/java/com/joaov1ct0r/restful_api_users_java/modules/domain/services/Generator.java

@@ -0,0 +1,19 @@
+package com.joaov1ct0r.restful_api_users_java.modules.domain.services;
+
+import org.springframework.stereotype.Service;
+import java.util.Random;
+
+@Service
+public class Generator {
+    private final String chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!@#$%&";
+    private final Random rnd = new Random();
+    public String generateRandomPassword(int len) {
+        StringBuilder sb = new StringBuilder(len);
+
+        for (int i = 0; i < len; i++) {
+            sb.append(this.chars.charAt(this.rnd.nextInt(this.chars.length())));
+        }
+
+        return sb.toString();
+    }
+}

src/main/java/com/joaov1ct0r/restful_api_users_java/modules/users/services/ResetPasswordService.java

@@ -2,6 +2,7 @@
 
 import com.joaov1ct0r.restful_api_users_java.modules.domain.services.BaseService;
 import com.joaov1ct0r.restful_api_users_java.modules.domain.services.EmailService;
+import com.joaov1ct0r.restful_api_users_java.modules.domain.services.Generator;
 import com.joaov1ct0r.restful_api_users_java.modules.users.dtos.ResetPasswordDTO;
 import com.joaov1ct0r.restful_api_users_java.modules.users.repositories.UserRepository;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -15,6 +16,9 @@ public class ResetPasswordService extends BaseService {
     @Autowired
     private UserRepository userRepository;
 
+    @Autowired
+    private Generator generator;
+
     public void execute(ResetPasswordDTO resetPasswordDTO) throws Exception {
         var isUserRegistered = this.userRepository.findByEmail(resetPasswordDTO.getEmail());
 
@@ -36,7 +40,7 @@ public void execute(ResetPasswordDTO resetPasswordDTO) throws Exception {
         this.emailService.sendMail(
                 userToUpdate.getEmail(),
                 "Password Updated",
-                "Your new password is: 123456"
+                "Your new password is: " + this.generator.generateRandomPassword(9)
         );
     }
 }

src/test/java/com/joaov1ct0r/restful_api_users_java/modules/users/services/users/ResetPasswordServiceTest.java

@@ -3,6 +3,7 @@
 import com.joaov1ct0r.restful_api_users_java.modules.domain.entities.ErrorLogEntity;
 import com.joaov1ct0r.restful_api_users_java.modules.domain.repositories.ErrorLogsRepository;
 import com.joaov1ct0r.restful_api_users_java.modules.domain.services.EmailService;
+import com.joaov1ct0r.restful_api_users_java.modules.domain.services.Generator;
 import com.joaov1ct0r.restful_api_users_java.modules.users.dtos.ResetPasswordDTO;
 import com.joaov1ct0r.restful_api_users_java.modules.users.entities.UserEntity;
 import com.joaov1ct0r.restful_api_users_java.modules.users.repositories.UserRepository;
@@ -40,11 +41,15 @@ public class ResetPasswordServiceTest {
     @Mock
     private ErrorLogsRepository errorLogsRepository;
 
+    @Mock
+    private Generator generator;
+
     @BeforeEach
     public void beforeEachSetUp() {
         Mockito.reset(this.userRepository);
         Mockito.reset(this.emailService);
         Mockito.reset(this.errorLogsRepository);
+        Mockito.reset(this.generator);
         Mockito.when(this.errorLogsRepository.save(any())).thenReturn(new ErrorLogEntity(
                 UUID.randomUUID(),
                 UUID.randomUUID(),
@@ -86,6 +91,8 @@ public void shouldBeAbleToResetPassword() {
                 )
         ));
 
+        Mockito.when(this.generator.generateRandomPassword(9)).thenReturn("any_generated_string");
+
         try {
             this.sut.execute(resetPasswordDTO);
         } catch (Exception e) {