WebDriverManager for automatic driver management in Selenium Java - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

Output of WebDriverManager setup code

What will be the output when running this Selenium Java code snippet using WebDriverManager?

Selenium Java

import io.github.bonigarcia.wdm.WebDriverManager;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;

public class Test {
    public static void main(String[] args) {
        WebDriverManager.chromedriver().setup();
        WebDriver driver = new ChromeDriver();
        driver.get("https://example.com");
        System.out.println(driver.getTitle());
        driver.quit();
    }
}

A Prints an empty string and keeps the browser open

B Throws IllegalStateException because driver executable path is not set

C Throws NullPointerException when calling getTitle()

D Prints the title of https://example.com and closes the browser without errors

💡 Hint

WebDriverManager automatically downloads and sets the driver executable path.

WebDriverManager.chromedriver().setup() downloads the correct ChromeDriver and sets the system property. Then ChromeDriver launches the browser, navigates to the URL, and getTitle() returns the page title. No exceptions occur.

❓ assertion

intermediate

Correct assertion to verify page title with WebDriverManager

Which assertion correctly verifies that the page title is exactly "Example Domain" after navigating using WebDriverManager and Selenium?

Selenium Java

WebDriverManager.chromedriver().setup();
WebDriver driver = new ChromeDriver();
driver.get("https://example.com");
String title = driver.getTitle();
// Which assertion below is correct?

A assertNotNull(title);

B assertTrue(title.contains("Example Domain"));

C assertEquals("Example Domain", title);

D assertFalse(title.isEmpty());

💡 Hint

Exact match is required, not just containment or non-null.

assertEquals("Example Domain", title) checks that the title exactly matches the expected string. Other assertions are weaker or less precise.

🔧 Debug

advanced

Identify the error in WebDriverManager usage

What error will occur when running this code snippet?

Selenium Java

import io.github.bonigarcia.wdm.WebDriverManager;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;

public class Test {
    public static void main(String[] args) {
        WebDriverManager.chromedriver();
        WebDriver driver = new ChromeDriver();
        driver.get("https://example.com");
        System.out.println(driver.getTitle());
        driver.quit();
    }
}

A IllegalStateException because driver executable path is not set

B No error; code runs and prints the title

C NullPointerException when calling getTitle()

D Compilation error due to missing import

💡 Hint

Check if WebDriverManager setup() method is called.

WebDriverManager.chromedriver() alone does not set up the driver. The setup() method must be called to download and set the driver path. Without it, ChromeDriver throws IllegalStateException.

🧠 Conceptual

advanced

Why use WebDriverManager in Selenium tests?

Which is the main advantage of using WebDriverManager for driver management in Selenium tests?

A It replaces the need for Selenium WebDriver API

B It automatically downloads and configures the correct browser driver version

C It provides a GUI to run Selenium tests

D It speeds up browser rendering during tests

💡 Hint

Think about driver executable management.

WebDriverManager automates downloading and setting the correct driver executable version, avoiding manual setup and version mismatch errors.

❓ framework

expert

Best practice for integrating WebDriverManager in JUnit 5 tests

Which code snippet correctly integrates WebDriverManager setup in a JUnit 5 test class to ensure the driver is ready before tests run?

Selenium Java

import io.github.bonigarcia.wdm.WebDriverManager;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;

public class SeleniumTest {
    static WebDriver driver;

    // Where to put WebDriverManager setup?

    @Test
    public void testTitle() {
        driver = new ChromeDriver();
        driver.get("https://example.com");
        System.out.println(driver.getTitle());
        driver.quit();
    }
}

A

@BeforeAll
public static void setup() {
    WebDriverManager.chromedriver().setup();
}

B Inside testTitle() method before creating ChromeDriver instance

C In a constructor of SeleniumTest class

D No setup needed; WebDriverManager works automatically

💡 Hint

Setup should run once before all tests.

Using @BeforeAll static method ensures WebDriverManager sets up the driver once before any tests run, avoiding repeated setup or errors.