org.openqa.selenium.NoAlertPresentException: no alert open

Question

Мой тест проверяет, могу ли я отправить сообщение на почту. Когда я нажимаю кнопку отправки, необходимо проверить предупреждение.

Мой код для предупреждения является:

 Alert alert = driver.switchTo().alert(); 
     System.out.println(alert.getText()); 
     alert.accept(); 
     Assert.assertTrue(alert.getText().contains("Thanks.")); 

Моя ошибка:

Starting ChromeDriver 2.25.426923 (0390b88869384d6eb0d5d09729679f934aab9eed) on port 13707 
Only local connections are allowed. 

org.openqa.selenium.NoAlertPresentException: no alert open 
    (Session info: chrome=55.0.2883.87) 
    (Driver info: chromedriver=2.25.426923 (0390b88869384d6eb0d5d09729679f934aab9eed),platform=Windows NT 6.3.9600 x86_64) (WARNING: The server did not provide any stacktrace information) 
Command duration or timeout: 76 milliseconds 
Build info: version: 'unknown', revision: '31c43c8', time: '2016-08-02 21:57:56 -0700' 
System info: host: 'Gaga', ip: '192.168.1.6', os.name: 'Windows 8.1', os.arch: 'amd64', os.version: '6.3', java.version: '1.8.0_101' 
Driver info: org.openqa.selenium.chrome.ChromeDriver 
Capabilities [{applicationCacheEnabled=false, rotatable=false, mobileEmulationEnabled=false, networkConnectionEnabled=false, chrome={chromedriverVersion=2.25.426923 (0390b88869384d6eb0d5d09729679f934aab9eed), userDataDir=C:\Users\Dragana\AppData\Local\Temp\scoped_dir6652_7181}, takesHeapSnapshot=true, pageLoadStrategy=normal, databaseEnabled=false, handlesAlerts=true, hasTouchScreen=false, version=55.0.2883.87, platform=WIN8_1, browserConnectionEnabled=false, nativeEvents=true, acceptSslCerts=true, locationContextEnabled=true, webStorageEnabled=true, browserName=chrome, takesScreenshot=true, javascriptEnabled=true, cssSelectorsEnabled=true}] 
Session ID: b7131fce27b2ef40f1daff3c82188e7c 

Answer 1

Код должен ждать готовности. Ниже приведен пример кода

try { 
    WebDriverWait wait = new WebDriverWait(driver, 2); 
    wait.until(ExpectedConditions.alertIsPresent()); 
    Alert alert = driver.switchTo().alert(); 
    System.out.println(alert.getText()); 
    alert.accept(); 
    Assert.assertTrue(alert.getText().contains("Thanks.")); 
} catch (Exception e) { 
    //exception handling 
}