A confirm box is often used to verify or accept something from the user. When a confirm alert is displayed, the user will have to click on either the OK or the Cancel button to proceed, as shown in the following screenshot:
If the user clicks on the OK button, the confirm box returns a true value response. If the user clicks on the Cancel button, then it returns false.
A prompt box is often used to accept a value from a user. When a prompt box pops up, the user will have to enter a value and click on either the OK or the Cancel button to proceed, as shown in the following screenshot:
If the user clicks on the OK button, the box returns the input value. If the user clicks on the Cancel button, the box returns null.
In this recipe, we will handle confirm and prompt boxes using the Selenium WebDriver's Alert interface.
Let's create a set of tests that can handle a confirm box displayed on a page, as follows:
- In the
testConfirmAccepttest, we will accept the confirm box and verify a message on the page when the confirm box is accepted, that is, when the OK button is clicked, as shown in following code:@Test public void testConfirmAccept() { // Click Confirm button to show Confirmation Alert box driver.findElement(By.id("confirm")).click(); // Get the Alert Alert alert = driver.switchTo().alert(); // Click OK button, by calling accept method alert.accept(); // Check Page displays correct message WebElement message = driver.findElement(By.id("demo")); assertEquals("You Accepted Alert!", message.getText()); } - In the
testConfirmDismisstest as shown in the following code, we will dismiss the confirm box by calling thedismiss()method; this is the same as clicking the Cancel button:@Test public void testConfirmDismiss() { // Click Confirm button to show Confirmation Alert box driver.findElement(By.id("confirm")).click(); // Get the Alert Alert alert = driver.switchTo().alert(); // Click Cancel button, by calling dismiss method alert.dismiss(); // Check Page displays correct message WebElement message = driver.findElement(By.id("demo")); assertEquals("You Dismissed Alert!", message.getText()); }
Let's create a test that handles a prompt box. We will enter text into the prompt box's input field and later verify if the same value is displayed on the page, as shown in following code example:
@Test
public void testPrompt() {
// Click Confirm button to show Prompt Alert box
driver.findElement(By.id("prompt")).click();
// Get the Alert
Alert alert = driver.switchTo().alert();
// Enter some value on Prompt Alert box
alert.sendKeys("Foo");
// Click OK button, by calling accept method
alert.accept();
// Check Page displays message with value entered in Prompt
WebElement message = driver.findElement(By.id("prompt_demo"));
assertEquals("Hello Foo! How are you today?", message.getText());
}Handling a confirm box works in a similar way to handling a simple alert box. To cancel a confirm box, the dismiss() method of Alert is used, as follows:
alert.dismiss();
To handle a prompt box, the Alert interface provides an extra sendKeys() method to enter text in the prompt box's input field. We can enter the text and either accept or dismiss a prompt box using the Alert method, as follows:
alert.sendKeys("Foo");
alert.accept();