Action methods per page in Selenium Java - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Purpose of Action Methods in Page Object Model

In Selenium testing using the Page Object Model, what is the main purpose of action methods defined in a page class?

A To initialize the WebDriver instance for the test

B To store the URLs of different pages in the application

C To perform user interactions like clicks and typing on web elements of that page

D To generate test reports after test execution

💡 Hint

Think about what actions a user can do on a web page and how tests simulate those.

Action methods encapsulate user interactions such as clicking buttons or entering text, making tests easier to read and maintain.

❓ Predict Output

intermediate

Output of Action Method Execution

Given the following Java Selenium page class snippet, what will be the output when loginPage.login("user", "pass") is called?

Selenium Java

public class LoginPage {
    WebDriver driver;
    
    public LoginPage(WebDriver driver) {
        this.driver = driver;
    }

    public void login(String username, String password) {
        System.out.println("Typing username: " + username);
        System.out.println("Typing password: " + password);
        System.out.println("Clicking login button");
    }
}

A

Typing username: user
Typing password: pass
Clicking login button

B

Typing username: pass
Typing password: user
Clicking login button

C

Clicking login button
Typing username: user
Typing password: pass

D No output because login method does not return anything

💡 Hint

Look at the order of the print statements inside the login method.

The method prints the username first, then password, then clicking login button in that order.

❓ locator

advanced

Best Locator Strategy for Action Methods

Which locator strategy is best practice to use inside action methods in a page class for stable and maintainable tests?

A Using IDs or unique attributes that rarely change

B Using absolute XPath expressions that include full path from root element

C Using CSS selectors with nth-child indexes for dynamic elements

D Using link text for buttons and links only

💡 Hint

Think about what locator is least likely to break when the page layout changes.

IDs or unique stable attributes provide the most reliable locators, making tests less fragile.

❓ assertion

advanced

Correct Assertion After Action Method

After calling an action method that submits a form, which assertion correctly verifies the success message text?

Selenium Java

String expectedMessage = "Form submitted successfully!";
String actualMessage = driver.findElement(By.id("success-msg")).getText();

A assertFalse(actualMessage.isEmpty());

B assertTrue(actualMessage.contains("Error"));

C assertNull(actualMessage);

D assertEquals(expectedMessage, actualMessage);

💡 Hint

Check which assertion compares the expected and actual text exactly.

assertEquals verifies that the actual message matches the expected success message exactly.

🔧 Debug

expert

Debugging Action Method Failure

An action method clickSubmit() in a page class throws ElementNotInteractableException during test runs. What is the most likely cause?

Selenium Java

public void clickSubmit() {
    WebElement submitBtn = driver.findElement(By.id("submit"));
    submitBtn.click();
}

A The locator By.id("submit") is incorrect and finds no element

B The submit button is hidden or disabled on the page when click is attempted

C The WebDriver instance is not initialized before calling clickSubmit()

D The click() method is deprecated and should not be used

💡 Hint

ElementNotInteractableException means the element exists but cannot be clicked.

This exception usually means the element is present but hidden, disabled, or overlapped, so Selenium cannot interact with it.

Practice

1. What is the main purpose of action methods in a Selenium page object?

easy

A. To represent user actions like clicking or typing on the page

B. To store test data for validation

C. To configure browser settings

D. To generate test reports automatically

Solution

1. Step 1: Understand the role of action methods

   Action methods are designed to perform user interactions such as clicking buttons or entering text.

2. Step 2: Differentiate from other page object responsibilities

   Storing data, configuring browsers, or generating reports are not the role of action methods.

3. Final Answer:

   To represent user actions like clicking or typing on the page -> Option A

4. Quick Check:

   Action methods = user actions [OK]

Hint: Action methods do what a user does on the page [OK]

Common Mistakes:

• Confusing action methods with data storage
• Thinking action methods configure the browser
• Assuming action methods generate reports

2. Which of the following is the correct way to define an action method that clicks a button using Selenium Java?

easy

A. public void clickButton() { driver.findElement(By.id("btn")).getText(); }

B. public void clickButton() { driver.findElement(By.id("btn")).click(); }

C. public void clickButton() { driver.findElement(By.id("btn")).sendKeys(); }

D. public void clickButton() { driver.findElement(By.id("btn")).clear(); }

Solution

1. Step 1: Identify the correct Selenium method for clicking

   The method click() performs a click action on the element.

2. Step 2: Check the other methods

   sendKeys() types text, getText() reads text, and clear() clears input fields.

3. Final Answer:

   public void clickButton() { driver.findElement(By.id("btn")).click(); } -> Option B

4. Quick Check:

   Click action uses click() method [OK]

Hint: Click uses click(), not sendKeys() or getText() [OK]

Common Mistakes:

• Using sendKeys() instead of click() to click
• Calling getText() which only reads text
• Using clear() which clears input fields

3. Given the following action method in a page object:

public void enterUsername(String name) {
    driver.findElement(By.name("username")).sendKeys(name);
}

What will happen when enterUsername("testUser") is called?

medium

A. The text "testUser" will be typed into the username input field

B. The username input field will be cleared

C. An error will occur because sendKeys requires no arguments

D. The username input field will be clicked but not typed

Solution

1. Step 1: Understand sendKeys() usage

   The sendKeys() method types the given string into the located input field.

2. Step 2: Analyze the method call

   Calling enterUsername("testUser") passes "testUser" to sendKeys(), so it types this text.

3. Final Answer:

   The text "testUser" will be typed into the username input field -> Option A

4. Quick Check:

   sendKeys("text") types text [OK]

Hint: sendKeys(text) types text into input fields [OK]

Common Mistakes:

• Thinking sendKeys() clears the field
• Believing sendKeys() takes no arguments
• Confusing click() with sendKeys()

4. Consider this action method:

public void submitForm() {
    driver.findElement(By.id("submitBtn")).click();
    driver.findElement(By.id("submitBtn")).click();
}

What is the issue with this method?

medium

A. It does not locate the submit button correctly

B. It uses an invalid locator syntax

C. It will cause a compilation error due to duplicate lines

D. It clicks the submit button twice unnecessarily

Solution

1. Step 1: Review the method actions

   The method calls click() on the same button twice in a row.

2. Step 2: Understand the impact

   Clicking twice may cause unexpected behavior or duplicate submissions.

3. Final Answer:

   It clicks the submit button twice unnecessarily -> Option D

4. Quick Check:

   Duplicate clicks cause redundant actions [OK]

Hint: Avoid repeating click() on same element twice [OK]

Common Mistakes:

• Thinking duplicate lines cause compile errors
• Assuming locator syntax is wrong
• Believing the button is not found

5. You want to create an action method that selects a checkbox only if it is not already selected. Which of the following is the best implementation?

hard

A. public void selectCheckbox() {
WebElement checkbox = driver.findElement(By.id("agree"));
checkbox.isSelected();
}

B. public void selectCheckbox() {
driver.findElement(By.id("agree")).click();
}

C. public void selectCheckbox() {
WebElement checkbox = driver.findElement(By.id("agree"));
if (!checkbox.isSelected()) {
checkbox.click();
}
}

D. public void selectCheckbox() {
WebElement checkbox = driver.findElement(By.id("agree"));
checkbox.clear();
}

Solution

1. Step 1: Check if checkbox is already selected

   Use isSelected() to verify checkbox state before clicking.

2. Step 2: Click only if not selected

   Clicking only when unchecked prevents unchecking it accidentally.

3. Final Answer:

   public void selectCheckbox() { WebElement checkbox = driver.findElement(By.id("agree")); if (!checkbox.isSelected()) { checkbox.click(); } } -> Option C

4. Quick Check:

   Check isSelected() before click to avoid toggling [OK]

Hint: Click checkbox only if not selected using isSelected() [OK]

Common Mistakes:

• Clicking checkbox without checking state
• Calling isSelected() without action
• Using clear() on checkbox which is invalid