Base page class pattern in Selenium Java - Test Execution Trace

Test Overview

This test uses the base page class pattern to open a web page, find a button, click it, and verify the resulting message is displayed correctly.

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.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;

// Base page class with common methods
class BasePage {
    protected WebDriver driver;

    public BasePage(WebDriver driver) {
        this.driver = driver;
    }

    public void click(By locator) {
        driver.findElement(locator).click();
    }

    public String getText(By locator) {
        return driver.findElement(locator).getText();
    }
}

// Home page class extending base page
class HomePage extends BasePage {
    private By buttonLocator = By.id("show-message-btn");
    private By messageLocator = By.id("message");

    public HomePage(WebDriver driver) {
        super(driver);
    }

    public void clickShowMessage() {
        click(buttonLocator);
    }

    public String getMessageText() {
        return getText(messageLocator);
    }
}

public class BasePagePatternTest {
    private WebDriver driver;
    private HomePage homePage;

    @BeforeEach
    public void setUp() {
        driver = new ChromeDriver();
        driver.get("https://example.com/testpage");
        homePage = new HomePage(driver);
    }

    @Test
    public void testShowMessageButton() {
        homePage.clickShowMessage();
        String message = homePage.getMessageText();
        assertEquals("Hello, World!", message);
    }

    @AfterEach
    public void tearDown() {
        driver.quit();
    }
}

Execution Trace - 7 Steps

Step	Action	System State	Assertion	Result
1	Test starts and Chrome browser opens	Browser window is open, ready to navigate	-	PASS
2	Browser navigates to https://example.com/testpage	Page loads with a button having id 'show-message-btn' and hidden message with id 'message'	-	PASS
3	HomePage object created with driver	Page elements accessible via HomePage methods	-	PASS
4	Clicks the button with id 'show-message-btn' using BasePage click method	Button is clicked, message becomes visible	-	PASS
5	Gets text from element with id 'message' using BasePage getText method	Message text is 'Hello, World!'	Verify message text equals 'Hello, World!'	PASS
6	Assertion checks if actual message text matches expected	Test verifies message correctness	assertEquals("Hello, World!", message) passes	PASS
7	Browser closes and test ends	Browser window closed	-	PASS

Failure Scenario

Failing Condition: Button with id 'show-message-btn' is missing or not clickable

Execution Trace Quiz - 3 Questions

What does the BasePage class provide in this test?

A Common methods to interact with web elements like click and getText

B The test assertions to verify results

C The browser driver setup and teardown

D The URL navigation logic

Key Result

Using a base page class helps reuse common web element actions, making tests cleaner and easier to maintain.