How to check if an HTML5 validation was triggered using selenium?

Question

If testing my webapp using Selenium. All the form validation in the webapp is done using HTML5 form validations. Is there any way to assert if a form/input validation was tr

Answer 1

A search like this does the trick in HTML5-aware browsers (using Java and WebDriver, but should be usable anywhere else, too):

// looks for an element that has been marked as required on a submit attempt
WebElement elem1 = driver.findElement(By.cssSelector("input:required"));
// looks for an element that has been marked as invalid on a submit attempt
WebElement elem2 = driver.findElement(By.cssSelector("input:invalid"));

The CSS pseudo classes available are:

• :required
• :optional
• :valid
• :invalid