java - How to verify text in message generated by Constraint Validation API in HTML5?

Question

I test web application that uses HTML5 Constraint Validation API to generate error pop-ups. How to verify text in the pop-ups in selenium tests? I cannot find the appropriate locators.

Answer 1

The Selenium API doesn't support directly the constraint validation. However, you could easily get the state and the message with a piece of JavaScript (Java):

JavascriptExecutor js = (JavascriptExecutor)driver;

WebElement field = driver.findElement(By.name("email"));
Boolean is_valid = (Boolean)js.executeScript("return arguments[0].checkValidity();", field);
String message = (String)js.executeScript("return arguments[0].validationMessage;", field);

Note that it is also possible to use getAttribute to get the validationMessage even though it is a property:

String message = driver.findElement(By.name("email")).getAttribute("validationMessage");