Window management (maximize, size) in Selenium Java - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the driver.manage().window().maximize() command do in Selenium?

It makes the browser window fill the entire screen, similar to clicking the maximize button on a window in your operating system.

beginner

How can you get the current size of the browser window in Selenium Java?

Use driver.manage().window().getSize() which returns a Dimension object containing the width and height of the window.

intermediate

How do you set a custom size for the browser window in Selenium Java?

Use driver.manage().window().setSize(new Dimension(width, height)) to resize the window to the specified width and height in pixels.

intermediate

Why is window management important in automated testing?

Because some web elements may appear or behave differently depending on the window size, managing the window ensures tests run consistently and mimic real user scenarios.

beginner

What is the difference between maximize() and setSize() in Selenium window management?

maximize() enlarges the window to full screen automatically, while setSize() lets you specify exact width and height values for the window.

Which Selenium Java command maximizes the browser window?

A driver.manage().window().getSize()

B driver.manage().window().setSize()

C driver.getWindowHandle()

D driver.manage().window().maximize()

The maximize() method enlarges the browser window to fill the screen.

How do you set the browser window size to 1024x768 pixels in Selenium Java?

A driver.manage().window().getSize()

B driver.manage().window().setSize(new Dimension(1024, 768))

C driver.setWindowSize(1024, 768)

D driver.manage().window().maximize()

setSize() with a Dimension object sets the window to the specified width and height.

What does driver.manage().window().getSize() return?

A The current window size as a Dimension object

B The window handle string

C The browser title

D The screen resolution

getSize() returns the current width and height of the browser window.

Why might you want to set a specific window size in automated tests?

A To test how the website looks on different screen sizes

B To speed up test execution

C To avoid opening the browser

D To change the browser language

Setting window size helps simulate different devices and screen resolutions.

Which class is used to specify window dimensions in Selenium Java?

A WindowSize

B Size

C Dimension

D Rectangle

Dimension class holds width and height values for window size.

Explain how to maximize a browser window and set a custom size using Selenium Java.

Think about the methods in the Window interface.

Why is controlling browser window size important in automated UI testing?

Consider how websites respond to different screen sizes.

Practice

1. What does the maximize() method do in Selenium WebDriver window management?

easy

A. It retrieves the current size of the browser window.

B. It makes the browser window fill the entire screen.

C. It sets the browser window to a custom size.

D. It closes the browser window.

Solution

1. Step 1: Understand the purpose of maximize()

   The maximize() method is used to enlarge the browser window to fill the entire screen.

2. Step 2: Differentiate from other window methods

   Unlike setSize() which sets a custom size, maximize() fills the screen automatically.

3. Final Answer:

   It makes the browser window fill the entire screen. -> Option B

4. Quick Check:

   maximize() = fills screen [OK]

Hint: maximize() fills the screen fully, setSize() sets custom size [OK]

Common Mistakes:

• Confusing maximize() with setSize()
• Thinking maximize() returns window size
• Assuming maximize() closes the window

2. Which of the following is the correct syntax to set the browser window size to 1024x768 in Selenium Java?

easy

A. driver.manage().window().maximize(1024, 768);

B. driver.window().setSize(1024, 768);

C. driver.setSize(1024, 768);

D. driver.manage().window().setSize(new Dimension(1024, 768));

Solution

1. Step 1: Recall correct method to set window size

   In Selenium Java, setSize() requires a Dimension object with width and height.

2. Step 2: Check syntax correctness

   driver.manage().window().setSize(new Dimension(1024, 768)); correctly uses driver.manage().window().setSize(new Dimension(1024, 768));. Other options misuse method names or parameters.

3. Final Answer:

   driver.manage().window().setSize(new Dimension(1024, 768)); -> Option D

4. Quick Check:

   setSize() needs Dimension object [OK]

Hint: Use new Dimension(width, height) inside setSize() [OK]

Common Mistakes:

• Calling maximize() with parameters
• Using setSize() without Dimension object
• Wrong method chaining like driver.window()

3. What will be the output of the following code snippet?

driver.manage().window().setSize(new Dimension(800, 600));
Dimension size = driver.manage().window().getSize();
System.out.println(size.getWidth() + "," + size.getHeight());

medium

A. 800,600

B. 600,800

C. 0,0

D. Throws a runtime exception

Solution

1. Step 1: Set window size to 800x600

   The code sets the browser window size to width=800 and height=600 using setSize().

2. Step 2: Retrieve and print the window size

   The getSize() method returns the current size, which is then printed as "width,height".

3. Final Answer:

   800,600 -> Option A

4. Quick Check:

   setSize(800,600) then getSize() = 800,600 [OK]

Hint: getSize() returns current size after setSize() [OK]

Common Mistakes:

• Mixing width and height order
• Expecting maximize() effect instead
• Assuming getSize() returns null or error

4. Identify the error in the following Selenium Java code snippet for setting window size:

driver.manage().window().setSize(1024, 768);

medium

A. The method name should be setWindowSize(), not setSize().

B. setSize() cannot be called on driver.manage().window().

C. setSize() requires a Dimension object, not two integers.

D. The code is correct and will run without errors.

Solution

1. Step 1: Check setSize() method parameters

   The setSize() method requires a single Dimension object, not two separate integers.

2. Step 2: Identify the error cause

   Passing two integers directly causes a compile-time error because no matching method exists.

3. Final Answer:

   setSize() requires a Dimension object, not two integers. -> Option C

4. Quick Check:

   setSize() needs Dimension object [OK]

Hint: Always wrap width and height in new Dimension() for setSize() [OK]

Common Mistakes:

• Passing width and height as separate arguments
• Using wrong method name
• Ignoring compile-time errors

5. You want to maximize the browser window and then verify if the window width is greater than 1200 pixels. Which code snippet correctly performs this check in Selenium Java?

hard

A. driver.manage().window().maximize();
Dimension size = driver.manage().window().getSize();
if (size.getWidth() > 1200) {
System.out.println("Width is greater than 1200");
}

B. driver.manage().window().setSize(new Dimension(1200, 800));
Dimension size = driver.manage().window().getSize();
if (size.getWidth() > 1200) {
System.out.println("Width is greater than 1200");
}

C. driver.manage().window().maximize(1200, 800);
Dimension size = driver.manage().window().getSize();
if (size.getWidth() > 1200) {
System.out.println("Width is greater than 1200");
}

D. driver.manage().window().maximize();
Dimension size = driver.manage().window().getSize();
if (size.getHeight() > 1200) {
System.out.println("Width is greater than 1200");
}

Solution

1. Step 1: Maximize the browser window

   Use maximize() without parameters to fill the screen.

2. Step 2: Get window size and check width

   Retrieve size with getSize() and compare width with 1200 pixels.

3. Step 3: Verify correctness of condition and output

   driver.manage().window().maximize(); Dimension size = driver.manage().window().getSize(); if (size.getWidth() > 1200) { System.out.println("Width is greater than 1200"); } correctly checks width > 1200 and prints the message.

4. Final Answer:

   Option A code snippet correctly maximizes and checks width. -> Option A

5. Quick Check:

   maximize() then getSize().getWidth() > 1200 [OK]

Hint: maximize() no params; getSize() then check width [OK]

Common Mistakes:

• Passing parameters to maximize()
• Checking height instead of width
• Using setSize() instead of maximize() for full screen