Verify double click action on button triggers alert

Preconditions (2)

Step 1: Open the test web page URL

Step 2: Locate the button with id 'double-click-btn'

Step 3: Perform a double click on the button

Step 4: Switch to the alert that appears

Step 5: Capture the alert text

Step 6: Accept the alert

✅ Expected Result: An alert appears with text 'Button double clicked!' and is accepted successfully

Automation Requirements - Selenium WebDriver with Java

Assertions Needed:

Verify alert is present after double click

Verify alert text equals 'Button double clicked!'

Best Practices:

Use Actions class for double click

Use explicit waits to wait for alert presence

Use By.id locator for button

Handle alert properly to avoid test hang

Automated Solution

Selenium Java

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.interactions.Actions;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
import org.openqa.selenium.Alert;
import java.time.Duration;
import static org.junit.jupiter.api.Assertions.assertEquals;

public class DoubleClickTest {
    public static void main(String[] args) {
        System.setProperty("webdriver.chrome.driver", "path/to/chromedriver");
        WebDriver driver = new ChromeDriver();
        WebDriverWait wait = new WebDriverWait(driver, Duration.ofSeconds(10));
        try {
            driver.get("https://example.com/double-click-test");

            WebElement button = driver.findElement(By.id("double-click-btn"));

            Actions actions = new Actions(driver);
            actions.doubleClick(button).perform();

            wait.until(ExpectedConditions.alertIsPresent());
            Alert alert = driver.switchTo().alert();

            String alertText = alert.getText();
            assertEquals("Button double clicked!", alertText);

            alert.accept();
        } finally {
            driver.quit();
        }
    }
}

The code starts by setting up the ChromeDriver and opening the test page URL.

It locates the button using By.id("double-click-btn"), which is a reliable locator.

The Actions class is used to perform a double click on the button.

After the double click, it waits explicitly for the alert to appear using WebDriverWait and ExpectedConditions.alertIsPresent().

Once the alert is present, it switches to the alert, captures the text, and asserts that it matches the expected message.

Finally, it accepts the alert to close it and quits the browser to clean up.

Common Mistakes - 4 Pitfalls

Using click() twice instead of doubleClick()

Not waiting for alert before switching

Using XPath with absolute path for button locator

Not closing the alert after verification

Bonus Challenge

Now add data-driven testing with 3 different buttons that trigger different alerts on double click

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