FirefoxOptions configuration in Selenium Java - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

What is the output of this FirefoxOptions configuration code?

Consider the following Java Selenium code snippet configuring FirefoxOptions. What will be the value of the 'headless' option after execution?

Selenium Java

import org.openqa.selenium.firefox.FirefoxOptions;

public class Test {
    public static void main(String[] args) {
        FirefoxOptions options = new FirefoxOptions();
        options.setHeadless(true);
        options.addArguments("-private");
        System.out.println(options.isHeadless());
    }
}

A true

B false

C null

D Compilation error

💡 Hint

Check the method used to set headless mode and the method to retrieve it.

The method setHeadless(true) sets the FirefoxOptions to run in headless mode. The isHeadless() method returns true if headless mode is enabled.

❓ assertion

intermediate

Which assertion correctly verifies FirefoxOptions has the argument '-private'?

Given a FirefoxOptions object configured with addArguments("-private"), which assertion correctly checks this argument is present?

Selenium Java

FirefoxOptions options = new FirefoxOptions();
options.addArguments("-private");

A assertNull(options.getProfile().getArguments());

B assertEquals(options.getProfile().getArguments(), "-private");

C assertFalse(options.getProfile().getArguments().isEmpty());

D assertTrue(options.getProfile().getArguments().contains("-private"));

💡 Hint

Check how to verify a list contains a specific string.

options.getProfile().getArguments() returns a set of strings. To check if '-private' is present, use contains() inside assertTrue.

❓ locator

advanced

Identify the best way to locate the Firefox binary path in FirefoxOptions

Which code snippet correctly sets the Firefox binary path to '/usr/bin/firefox' in FirefoxOptions?

A options.setBinary("/usr/bin/firefox");

B options.setBinary(new File("/usr/bin/firefox"));

C options.setBinary(new FirefoxBinary(new File("/usr/bin/firefox")));

D options.setBinary("firefox", "/usr/bin/firefox");

💡 Hint

Check the expected parameter type for setBinary method.

setBinary expects a FirefoxBinary object, which can be created with a File object pointing to the binary path.

🔧 Debug

advanced

Why does this FirefoxOptions code cause a compilation error?

Identify the error in the following code snippet:

Selenium Java

FirefoxOptions options = new FirefoxOptions();
options.addArguments(-private);

A The code is correct and compiles without error.

B Missing quotes around '-private' causes a compilation error.

C Cannot assign FirefoxOptions to options variable without import.

D addArguments method does not exist in FirefoxOptions.

💡 Hint

Check the argument type passed to addArguments.

The argument '-private' must be a string literal enclosed in quotes. Without quotes, it is treated as an undefined variable causing a compilation error.

❓ framework

expert

Which FirefoxOptions configuration will correctly enable headless mode and disable GPU acceleration for a Selenium test?

Select the code snippet that correctly configures FirefoxOptions to run headless and disable GPU acceleration.

A

FirefoxOptions options = new FirefoxOptions();
options.setHeadless(true);
options.addArguments("--disable-gpu");

B

FirefoxOptions options = new FirefoxOptions();
options.addArguments("--headless", "--disable-gpu");

C

FirefoxOptions options = new FirefoxOptions();
options.setHeadless(false);
options.addArguments("--disable-gpu");

D

FirefoxOptions options = new FirefoxOptions();
options.setHeadless(true);
options.addArguments("-disable-gpu");

💡 Hint

Check the correct method to enable headless mode and the correct argument syntax for disabling GPU.

setHeadless(true) enables headless mode. The argument to disable GPU is '--disable-gpu' with two dashes. Option A uses both correctly.