Top 15 Test Cases for Login Page – Manual & Automation Examples (With Bug Scenarios)
Testing a login page is one of the most important tasks in software testing. Whether you’re preparing for a QA interview or writing real-time test cases for your web or mobile application, a login module provides many critical validations. In this post, you’ll learn manual test cases, common bugs, and Selenium automation examples for login functionality.
ЁЯФН Why Login Page Testing Is Important?
- The first point of user interaction with the app
- Security entry point – needs proper validation
- The most common area where users face errors
ЁЯУЭ Top 15 Manual Test Cases for Login Page
| Test Case ID | Scenario | Test Steps | Expected Result |
|---|---|---|---|
| TC001 | Valid username and password | Enter valid credentials and click Login | The user should be redirected to the dashboard |
| TC002 | Invalid password | Enter a valid username and the wrong password | The error message should appear |
| TC003 | Blank username and password | Leave both fields blank and click Login | Validation messages should be displayed |
| TC004 | Blank username only | Leave the username blank, enter the password, and click Login | The username required message should appear |
| TC005 | Blank password only | Enter username, leave the password blank, click Login | Password required message should appear |
| TC006 | SQL injection attempt | Enter "admin' OR 1=1--" as the username | Input should be rejected and sanitized |
| TC007 | Special characters in the username | Enter special characters like '@#$%' | Error or input validation message should appear |
| TC008 | The password field is masked | Check if the password is displayed as dots or asterisks | Characters should be hidden |
| TC009 | Remember Me checkbox | Select the checkbox and log in | The user should stay logged in on the next visit |
| TC010 | Forgot Password link | Click the link and validate the navigation | The user should go to the reset password screen |
| TC011 | Case sensitivity | Enter uppercase instead of lowercase username | The system should handle case sensitivity properly |
| TC012 | Browser Back button after login | Log in successfully and press the browser back button | The user should not return to the login page or see cached content |
| TC013 | Multiple failed login attempts | Try logging in with the wrong password 5 times | Account lock or CAPTCHA should appear |
| TC014 | Login session timeout | Login and remain idle | The session should expire after the defined timeout |
| TC015 | Mobile responsiveness | Open the login page on mobile devices | The login form should render correctly on smaller screens |
ЁЯРЮ Common Bug Scenarios on Login Page
- Login accepts invalid email or empty credentials
- The password is visible even after clicking the "eye" toggle
- No validation messages for blank fields
- Incorrect redirect after login
- The session has not expired after logging out
ЁЯдЦ Selenium Automation Example – Valid Login Test
@Test
public void validLoginTest() {
WebDriver driver = new ChromeDriver();
driver.get("https://example.com/login");
driver.findElement(By.id("username")).sendKeys("testuser");
driver.findElement(By.id("password")).sendKeys("testpass");
driver.findElement(By.id("loginBtn")).click();
String expectedTitle = "Dashboard";
String actualTitle = driver.getTitle();
Assert.assertEquals(actualTitle, expectedTitle);
driver.quit();
}
This Selenium test script verifies a successful login using valid credentials. You can also write negative test cases using invalid passwords and assert error messages.
ЁЯСЛ Hi, I'm Suriya — QA Engineer with 4+ years of experience in manual, API & automation testing.
ЁЯУм Contact Me | LinkedIn | GitHub
ЁЯУМ Follow for: Real-Time Test Cases, Bug Reports, Selenium Frameworks.
