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Selenium Javatesting~15 mins

ChromeOptions configuration in Selenium Java - Build an Automation Script

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Configure Chrome browser with ChromeOptions and verify browser launch
Preconditions (3)
Step 1: Create a ChromeOptions object
Step 2: Add the argument '--headless' to run Chrome in headless mode
Step 3: Add the argument '--disable-gpu' to disable GPU usage
Step 4: Initialize ChromeDriver with the ChromeOptions
Step 5: Navigate to 'https://www.example.com'
Step 6: Verify the page title is 'Example Domain'
Step 7: Close the browser
✅ Expected Result: Chrome browser launches in headless mode with specified options, navigates to example.com, and page title matches 'Example Domain'. Browser closes successfully.
Automation Requirements - Selenium WebDriver with Java
Assertions Needed:
Verify page title equals 'Example Domain'
Verify ChromeDriver is initialized with ChromeOptions including '--headless' and '--disable-gpu'
Best Practices:
Use explicit waits if needed
Use try-finally or @After method to close browser
Use descriptive variable names
Avoid hardcoded sleeps
Use ChromeOptions to configure browser capabilities
Automated Solution
Selenium Java
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

public class ChromeOptionsTest {
    private WebDriver driver;

    @BeforeEach
    public void setUp() {
        ChromeOptions options = new ChromeOptions();
        options.addArguments("--headless");
        options.addArguments("--disable-gpu");
        driver = new ChromeDriver(options);
    }

    @Test
    public void testExampleDotComTitle() {
        driver.get("https://www.example.com");
        String title = driver.getTitle();
        Assertions.assertEquals("Example Domain", title, "Page title should be 'Example Domain'");
    }

    @AfterEach
    public void tearDown() {
        if (driver != null) {
            driver.quit();
        }
    }
}

This test class uses JUnit 5 for structure.

In setUp(), we create a ChromeOptions object and add the arguments --headless and --disable-gpu to run Chrome without UI and disable GPU acceleration.

We then initialize ChromeDriver with these options.

The test method navigates to https://www.example.com and asserts the page title is exactly Example Domain.

Finally, tearDown() closes the browser to clean up resources.

This setup ensures the browser runs headless and the test verifies the configuration by checking the page title.

Common Mistakes - 4 Pitfalls
Not adding ChromeOptions to ChromeDriver constructor
Using Thread.sleep() instead of explicit waits
Not closing the browser after test
Adding incorrect or unsupported ChromeOptions arguments
Bonus Challenge

Now add data-driven testing to run the test with three different ChromeOptions configurations: headless, incognito, and maximized window.

Show Hint

Practice

(1/5)
1. What is the primary purpose of using ChromeOptions in Selenium Java?
easy
A. To locate elements on a web page
B. To write test assertions for Chrome browser
C. To customize Chrome browser settings before launching it
D. To manage test data inputs

Solution

  1. Step 1: Understand ChromeOptions role

    ChromeOptions is used to set browser preferences like headless mode or window size before starting Chrome.
  2. Step 2: Differentiate from other Selenium tasks

    It is not used for assertions, locating elements, or managing test data, which are separate concerns.
  3. Final Answer:

    To customize Chrome browser settings before launching it -> Option C
  4. Quick Check:

    ChromeOptions = browser customization [OK]
Hint: ChromeOptions sets browser behavior before launch [OK]
Common Mistakes:
  • Confusing ChromeOptions with element locators
  • Thinking ChromeOptions handles test assertions
  • Assuming ChromeOptions manages test data
2. Which of the following is the correct way to add the argument to start Chrome maximized using ChromeOptions in Java?
easy
A. options.addArguments("--start-maximized");
B. options.addArgument("start-maximized");
C. options.setArguments("--start-maximized");
D. options.addArguments("startMaximized");

Solution

  1. Step 1: Recall correct method name

    The method to add arguments is addArguments (plural), not addArgument or setArguments.
  2. Step 2: Use correct argument format

    Arguments must start with double dashes, so "--start-maximized" is correct.
  3. Final Answer:

    options.addArguments("--start-maximized"); -> Option A
  4. Quick Check:

    Method = addArguments, Argument = "--start-maximized" [OK]
Hint: Use addArguments("--option") with double dashes [OK]
Common Mistakes:
  • Using singular addArgument instead of addArguments
  • Omitting double dashes in argument string
  • Using incorrect method setArguments
3. Given the following code snippet, what will be the effect when launching Chrome?
ChromeOptions options = new ChromeOptions();
options.addArguments("--headless");
options.addArguments("--disable-gpu");
ChromeDriver driver = new ChromeDriver(options);
medium
A. Chrome will launch in normal mode with GPU enabled
B. Chrome will launch maximized but not headless
C. Chrome will throw a syntax error due to addArguments usage
D. Chrome will launch in headless mode with GPU disabled

Solution

  1. Step 1: Analyze added arguments

    The arguments "--headless" and "--disable-gpu" tell Chrome to run without UI and disable GPU acceleration.
  2. Step 2: Understand ChromeDriver initialization

    Passing options to ChromeDriver applies these settings, so Chrome runs headless with GPU disabled.
  3. Final Answer:

    Chrome will launch in headless mode with GPU disabled -> Option D
  4. Quick Check:

    Arguments = headless + disable GPU [OK]
Hint: Headless mode needs "--headless" argument [OK]
Common Mistakes:
  • Thinking addArguments causes syntax error
  • Assuming headless mode still shows UI
  • Ignoring GPU disable argument effect
4. Identify the error in the following code snippet that configures ChromeOptions:
ChromeOptions options = new ChromeOptions();
options.addArguments("start-maximized");
ChromeDriver driver = new ChromeDriver(options);
medium
A. Missing double dashes before argument "start-maximized"
B. Incorrect method name; should be addArgument instead of addArguments
C. ChromeOptions cannot be passed to ChromeDriver constructor
D. No error; code is correct

Solution

  1. Step 1: Check argument format

    The argument "start-maximized" lacks the required "--" prefix for Chrome options.
  2. Step 2: Verify method and usage

    The method addArguments is correct and ChromeOptions can be passed to ChromeDriver constructor, so no error there.
  3. Final Answer:

    Missing double dashes before argument "start-maximized" -> Option A
  4. Quick Check:

    Arguments need "--" prefix [OK]
Hint: Chrome arguments always start with "--" [OK]
Common Mistakes:
  • Omitting double dashes in argument strings
  • Confusing addArguments with addArgument
  • Thinking ChromeOptions can't be passed to ChromeDriver
5. You want to launch Chrome in headless mode, disable extensions, and start maximized using ChromeOptions. Which code snippet correctly applies all these settings?
hard
A. ChromeOptions options = new ChromeOptions(); options.addArgument("--headless", "--disable-extensions", "--start-maximized"); ChromeDriver driver = new ChromeDriver(options);
B. ChromeOptions options = new ChromeOptions(); options.addArguments("--headless"); options.addArguments("--disable-extensions"); options.addArguments("--start-maximized"); ChromeDriver driver = new ChromeDriver(options);
C. ChromeOptions options = new ChromeOptions(); options.addArguments("headless"); options.addArguments("disable-extensions"); options.addArguments("start-maximized"); ChromeDriver driver = new ChromeDriver(options);
D. ChromeOptions options = new ChromeOptions(); options.setArguments(List.of("--headless", "--disable-extensions", "--start-maximized")); ChromeDriver driver = new ChromeDriver(options);

Solution

  1. Step 1: Identify required arguments

    The settings require "--headless", "--disable-extensions", and "--start-maximized", all prefixed with "--".
  2. Step 2: Confirm correct method

    Use addArguments() (plural); invalid methods like addArgument() or setArguments() cause errors.
  3. Step 3: Validate implementation

    Correct code applies each argument via separate addArguments calls.
  4. Final Answer:

    ChromeOptions options = new ChromeOptions(); options.addArguments("--headless"); options.addArguments("--disable-extensions"); options.addArguments("--start-maximized"); ChromeDriver driver = new ChromeDriver(options); -> Option B
  5. Quick Check:

    addArguments("--headless"), addArguments("--disable-extensions"), addArguments("--start-maximized") [OK]
Hint: Call addArguments separately with "--" prefixed options [OK]
Common Mistakes:
  • Passing arguments without "--" prefix
  • Using addArgument instead of addArguments
  • Using non-existent setArguments method
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10 questions~5 mineasy hard