Alert is not displayed

问题

My test checks whether the user can log in to the site. I wrote a code to alert that works but showing parts in catch. I tried to write alert without try and catch but displays an error.

How to write alert without try and catch and alert to be displayed(test to pass).

org.openqa.selenium.TimeoutException: Expected condition failed: waiting for alert to be present (tried for 5 second(s) with 500 MILLISECONDS interval)

This is my code:

public void getMessage() {
        //Verify that is message preview
        try {
        WebDriverWait wait = new WebDriverWait(driver, 5);
        wait.until(ExpectedConditions.alertIsPresent());
        Alert alert = driver.switchTo().alert();
        System.out.println(alert.getText());
        alert.accept();
        Assert.assertTrue(alert.getText().contains("ERROR: Invalid login credentials."));
        } catch (Exception e) {
        System.out.println("Alert is not displayed");
        }

回答1:

Since you have confirmed that the dialog is not truly a JS alert dialog, you won't be able to use Alert. The good news is that it's HTML just like any other part of the page so you can just scrape the element that contains the error text.

来源：https://stackoverflow.com/questions/42597943/alert-is-not-displayed