Adjusting GUI and API Test Cases with ChatGPT

Problem: Leading/Trailing Spaces in User Input

When users accidentally add spaces before or after data in forms, validation may fail. The article shows how to strip spaces using .trim() in both front‑end JavaScript validation functions and back‑end Java controllers.

Front‑end Fix

In index.js the functions validateRegisterForm, validateLoginForm, validateVeriCodeForm and validateRecoverForm are updated to call .trim() on each retrieved value before passing to the check functions.

function validateRegisterForm(){
  const username = document.getElementById('username') ? document.getElementById('username').value.trim() : '';
  const password = document.getElementById('password') ? document.getElementById('password').value.trim() : '';
  const confirmPassword = document.getElementById('confirmPassword') ? document.getElementById('confirmPassword').value.trim() : '';
  const phone = document.getElementById('phone') ? document.getElementById('phone').value.trim() : '';
  const email = document.getElementById('email') ? document.getElementById('email').value.trim() : '';
  return checkRegister(username, password, confirmPassword, phone, email);
}

function validateLoginForm(){
  const username = document.getElementById('username') ? document.getElementById('username').value.trim() : '';
  const password = document.getElementById('password') ? document.getElementById('password').value.trim() : '';
  return checkLogin(username, password);
}

function validateVeriCodeForm(){
  const contact = document.getElementById('contact') ? document.getElementById('contact').value.trim() : '';
  return checkVeriCode(contact);
}

function validateRecoverForm(){
  const identifyingCode = document.getElementById('identifyingCode') ? document.getElementById('identifyingCode').value.trim() : '';
  const newPassword = document.getElementById('newPassword') ? document.getElementById('newPassword').value.trim() : '';
  const confirmPassword = document.getElementById('confirmPassword') ? document.getElementById('confirmPassword').value.trim() : '';
  return checkRecover(identifyingCode, newPassword, confirmPassword);
}

Back‑end Fix

In Java controllers the request parameters are retrieved and .trim() is applied, with a null‑check to avoid NullPointerException.

// Example in RegisterController.java
private User getUser(){
  String username = this.request.getParameter("username");
  String password = this.request.getParameter("password");
  String phone = this.request.getParameter("phone");
  String email = this.request.getParameter("email");
  // Trim where appropriate
  username = username != null ? username.trim() : null;
  phone = phone != null ? phone.trim() : null;
  email = email != null ? email.trim() : null;
  // Password is hashed with SHA256, so do not trim it
  User user = new User(username, password, phone, email);
  return user;
}

// Example in LoginController.java
String username = this.request.getParameter("username");
username = username != null ? username.trim() : null;
String password = this.request.getParameter("password");
password = password != null ? password.trim() : null;

Test Data Constants

The globals.py file defines constants that contain valid values surrounded by spaces, used to verify that trimming works correctly.

class Config:
    # URL definitions omitted for brevity
    VALID_USERNAME = "validUser123"
    VALID_PASSWORD = "Valid123!"
    VALID_PHONE = "13812345677"
    VALID_EMAIL = "[email protected]"
    # Space‑surrounded constants
    SPACE_USERNAME = " " + VALID_USERNAME + " "
    SPACE_PASSWORD = " " + VALID_PASSWORD + " "
    SPACE_PHONE = " " + VALID_PHONE + " "
    SPACE_EMAIL = " " + VALID_EMAIL + " "

Updated Test Cases

Test scripts such as Test_Register_GUI.py, Test_Login_GUI.py and Test_Recover_GUI.py are modified to include the space‑containing inputs and the expected outcomes. Running the tests with pytest shows all cases passing.

... pytest output ...
===================== 16 passed in 8.94s =====================
... pytest output ...
===================== 7 passed in 4.51s =====================
... pytest output ...
===================== 9 passed in 24.65s =====================

Summary

The adjustments ensure that both GUI and API layers correctly handle inputs with surrounding whitespace, preventing validation failures while preserving password hashing logic. All updated test cases confirm the effectiveness of the changes.