Why advanced skills handle complex scenarios in Selenium Java - Test Execution Impact

Test Overview

This test automates a login process on a web page with dynamic elements. It verifies that advanced Selenium skills like explicit waits and exception handling help manage complex scenarios where elements load unpredictably.

Test Code - JUnit with Selenium WebDriver

Selenium Java

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
import org.openqa.selenium.NoSuchElementException;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;

public class AdvancedLoginTest {
    WebDriver driver;
    WebDriverWait wait;

    @BeforeEach
    public void setUp() {
        driver = new ChromeDriver();
        wait = new WebDriverWait(driver, java.time.Duration.ofSeconds(10));
    }

    @Test
    public void testLoginWithDynamicElements() {
        driver.get("https://example.com/login");

        // Wait for username field to be visible
        WebElement username = wait.until(ExpectedConditions.visibilityOfElementLocated(By.id("username")));
        username.sendKeys("testuser");

        // Wait for password field to be visible
        WebElement password = wait.until(ExpectedConditions.visibilityOfElementLocated(By.id("password")));
        password.sendKeys("password123");

        // Wait for login button to be clickable
        WebElement loginButton = wait.until(ExpectedConditions.elementToBeClickable(By.id("loginBtn")));
        loginButton.click();

        // Wait for welcome message to appear
        WebElement welcomeMsg = wait.until(ExpectedConditions.visibilityOfElementLocated(By.id("welcomeMessage")));

        // Verify welcome message text
        assertEquals("Welcome, testuser!", welcomeMsg.getText());
    }

    @AfterEach
    public void tearDown() {
        if (driver != null) {
            driver.quit();
        }
    }
}

Execution Trace - 8 Steps

Step	Action	System State	Assertion	Result
1	Test starts and Chrome browser opens	Browser window is open and ready	-	PASS
2	Navigates to https://example.com/login	Login page loads with username, password fields and login button	-	PASS
3	Waits until username field is visible and enters 'testuser'	Username input field is visible and filled with 'testuser'	Username field is visible before typing	PASS
4	Waits until password field is visible and enters 'password123'	Password input field is visible and filled with 'password123'	Password field is visible before typing	PASS
5	Waits until login button is clickable and clicks it	Login button is clicked, page processes login	Login button is clickable before clicking	PASS
6	Waits until welcome message is visible	Welcome message appears on page	Welcome message is visible	PASS
7	Verifies welcome message text equals 'Welcome, testuser!'	Welcome message text matches expected	Assert welcome message text correctness	PASS
8	Test ends and browser closes	Browser window closed	-	PASS

Failure Scenario

Failing Condition: If the welcome message does not appear within 10 seconds after login click

Execution Trace Quiz - 3 Questions

What does the test wait for before entering the username?

A The username field to be visible

B The login button to be clickable

C The welcome message to appear

D The password field to be visible

Key Result

Using explicit waits and exception handling in Selenium helps tests handle dynamic page elements and timing issues, making tests reliable for complex scenarios.