6. Object-Oriented Design for Automation & Page Objects

OOP in Test Frameworks

// Base Page with encapsulated driver/page reference:
public abstract class BasePage {
    protected String pageUrl;
public BasePage(String pageUrl) {
        this.pageUrl = pageUrl;
    }
public void open() {
        System.out.println("Navigating to: " + this.pageUrl);
    }
}
// Child Page inheriting common capabilities:
public class LoginPage extends BasePage {
    private String usernameSelector = "#username";
public LoginPage() {
        super("https://targetqa.com/login");
    }
public void login(String user, String pass) {
        open();
        System.out.println("Typing credentials into " + usernameSelector);
    }
}