36. Data-Driven Testing with External Files & POJO Models

Test Data POJO Pattern

public class UserCredentials {
    private String email;
    private String password;
public UserCredentials(String email, String password) {
        this.email = email;
        this.password = password;
    }
public String getEmail() { return email; }
    public String getPassword() { return password; }
}
// Random unique email generator:
public static String generateUniqueEmail() {
    return "test_" + System.currentTimeMillis() + "@targetqa.com";
}