Handle Alert Popup | Modal dialog

PopUps

Web Applications generate 3 different types of PopUps;  namely,

     1| JavaScript PopUps
     2| Browser PopUps
     3| Native OS PopUps [e.g., Windows Popup like Upload/Download]

JavaScript pop-ups are generated by the web application code. Selenium provides an API to handle JavaScript pop-ups

Alert alert = driver.switchTo().alert();

accept(), dismiss(), getText(), and sendKeys() are some of the most important Alert functions.

Handling JS PopUp

#Print Alert Text and Close

    import org.openqa.selenium.Alert;

    Alert alert = driver.switchTo().alert();
    System.out.println(closeAlertAndGetItsText());

    private String closeAlertAndGetItsText() {
      try {
        Alert alert = driver.switchTo().alert();
        String alertText = alert.getText();
        System.out.println(alertText); //Print Alert popup
        if (acceptNextAlert) {
        alert.accept(); //Accepts Alert popup [OK]
        } else {
        alert.dismiss(); //Cancel Alert popup
        }
        return alertText;
        } finally {
        acceptNextAlert = true;
        }
        }

#Assert Alert Text

    Alert alert = driver.switchTo().alert();
    assertEquals("Expected Value", closeAlertAndGetItsText());

isAlertPresent()

    driver.findElement(By.id(Value)).click();
    isAlertPresent();

    private void isAlertPresent() {
        try {
        Alert alert = driver.switchTo().alert();
         System.out.println(alert.getText());
         alert.accept();       
        } catch (NoAlertPresentException e) {
         System.out.println("Alert not available");
                return;
        }
      }