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#7,253 opened on May 7, 2025 0 comments 0 reactions 0 assignees View on GitHub

bug

Dominant language: TypeScript
Stars: 2k
Forks: 807
Avg merge: 10h 12m
Merged PRs (30d): 7

Description

public class User {

private String username;
private String password;
private String name;
private String surname;

public User() {
//no arguments constructor
}

public User(String username, String password, String name, String surname) {
this.username = username;
this.password = password;
this.name = name;
this.surname = surname;
}

public String getUsername() {
return username;
}

public String getPassword() {
return password;
}

public String getName() {
return name;
}

public String getSurname() {
return surname;
}
}

import java.util.ArrayList;

public class DataHandler {

private ArrayList UserList;
private static DataHandler instance;

private DataHandler() {
UserList = new ArrayList<>();
}

public static DataHandler getInstance() {
if(instance == null)
instance = new DataHandler();
return instance;
}

public User getUser(String username) {
for (User user : UserList) {
if (user.getUsername().equals(username))
return user;
}
return new User();
}
public void setUser(User user) {
this.UserList.add(user);
}
}

public class Login {

public boolean checkUserName(String username) {

if (username.length() >= 5 && username.contains("_"))
return true;
return false;
}

public boolean checkPasswordComplexity(String password) {

if (!(password.length() >= 8))
return false;
if (!checkSpecialChar(password))
return false;
if (!checkDigit(password))
return false;
if (!checkLowerCase(password))
return false;
if (!checkCaps(password))
return false;
return true;
}

public boolean CheckCellPhoneNumber(String PhoneNumber){
if(PhoneNumber == null || PhoneNumber.isEmpty()){
return false;
}

if(!PhoneNumber.startsWith("+")){
return false;
}
String NumberWithoutCountryCode = PhoneNumber.substring(1);
if(!NumberWithoutCountryCode.matches("\\d{0,11}")){
return false;
}
return true;
}

public String registerUser(String username, String password, String name, String surname) {
if (!checkUserName(username))
return "Username is not correctly formatted, please ensure that your username contains an underscore and is no more than 5 characters in length.";
if (!checkPasswordComplexity(password))
return "Password is not correctly formatted, please ensure that the password contains at least 8 characters, a capital letter, a number and a special character.";
DataHandler.getInstance().setUser(new User(username, password, name, surname));
return "Password successfully captured";
}

public boolean loginUser(String username, String password) {
User user = DataHandler.getInstance().getUser(username);
if (user.getPassword().equals(password))
return true;
return false;
}

public String returnLoginStatus(String username, String password) {
if(loginUser(username, password)) {
User user = DataHandler.getInstance().getUser(username);
return "Welcome " + user.getName() + "," + user.getSurname() + " it is great to see you again.";
}
return "Username or password incorrect, please try again";
}

private boolean checkSpecialChar(String password) {
char[] specialChar = {' ', '!', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',',
'-', '.', '/', ':',';', '<', '=', '>', '?', '@','[', ']', '\\', '^', '_', '`','{', '|', '}', '~'};

for (char c : specialChar) {
if (password.contains(""+c))
return true;
}
return false;
}

private boolean checkCaps(String password) {
for (int i = 0; i < password.length(); i++) {
if (Character.isUpperCase(password.charAt(i)))
return true;
}
return false;
}

private boolean checkLowerCase(String password) {
for (int i = 0; i < password.length(); i++) {
if (Character.isLowerCase(password.charAt(i)))
return true;
}
return false;
}

private boolean checkDigit(String password) {
for (int i = 0; i < password.length(); i++) {
if (Character.isDigit(password.charAt(i)))
return true;
}
return false;
}
}

import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.*;

class LoginTest {

@BeforeAll
public static void init() {
DataHandler.getInstance().setUser(new User("kyl_1", "P@ssword1", "Test_name", "Test_surname"));
}

@Test
public void checkUsernameTest() {
Login login = new Login();
String message = login.returnLoginStatus("kyl_1", "P@ssword1");
assertEquals(message, "Welcome Test_name,Test_surname it is great to see you again.");
}

@Test
public void checkBadUsernameTest() {
Login login = new Login();
String message = login.registerUser("kyle!!!!!!!", "P@ssword1", "Test_name", "Test_surname");
assertEquals(message, "Username is not correctly formatted, please ensure that your username contains an underscore and is no more than 5 characters in length.");
}

@Test
public void checkCorrectlyFormattedPasswordTest() {
Login login = new Login();
String message = login.registerUser("ky_le", "Ch&&sec@ke99!", "Test_name", "Test_surname");
assertEquals(message, "Password successfully captured");
}

@Test
public void checkIncorrectlyFormattedPasswordTest() {
Login login = new Login();
String message = login.registerUser("k_yle", "password", "Test_name", "Test_surname");
assertEquals(message, "Password is not correctly formatted, please ensure that the password contains at least 8 characters, a capital letter, a number and a special character.");
}

@Test
public void loginSuccessfulTest() {
Login login = new Login();
assertTrue(login.loginUser("kyl_1","P@ssword1"));
}

@Test
public void loginFailTest() {
Login login = new Login();
assertFalse(login.loginUser("kyl_1","P@ssword2"));
}

@Test
public void usernameCorrectlyFormattedTest() {
Login login = new Login();
assertTrue(login.checkUserName("kyl_1"));
}

@Test
public void usernameInCorrectlyFormattedTest() {
Login login = new Login();
assertFalse(login.checkUserName("kyl!!!!!"));
}

@Test
public void passwordCorrectlyFormattedTest() {
Login login = new Login();
assertTrue(login.checkPasswordComplexity("Ch&&sec@ke99!"));
}

@Test
public void passwordInCorrectlyFormattedTest() {
Login login = new Login();
assertFalse(login.checkPasswordComplexity("password"));
}

@Test
public void cellPhoneNumberCorrectlyFormattedTest(){
Login login = new Login();
assertTrue(login.CheckCellPhoneNumber("+27838968976"));
}

@Test
public void cellPhoneNumberInCorrectlyFormattedTest(){
Login login = new Login();
assertFalse(login.CheckCellPhoneNumber("08966553"));
}
}public class User {
private String username;
private String password;
private String name;
private String surname;