Equivalent of waitForVisible waitForElementPresent in Selenium WebDriver tests using Java

Question

With  HTML  Selenium tests  created with Selenium IDE or manually   you can use some very handy commands like WaitForElementPresent or WaitForVisible    lt tr gt       lt td gt waitForElementPresent lt  td gt       lt td gt id saveButton lt  td gt       lt td gt  lt  td gt   lt  tr gt    When coding Selenium tests in Java  Webdriver   Selenium RC   I m not sure of the terminology here   is there something similar built-in    For example  for checking that a dialog  that takes a while to open  is visible     WebElement dialog   driver findElement By id  reportDialog     assertTrue dialog isDisplayed         often fails as it isn t visible  yet    What s the cleanest robust way to code such check   Adding Thread sleep   calls all over the place would be ugly and fragile  and rolling your own while loops seems pretty clumsy too

User · Accepted Answer

Implicit and Explicit Waits

Implicit Wait

An implicit wait is to tell WebDriver to poll the DOM for a certain amount of time when trying to find an element or elements if they are not immediately available. The default setting is 0. Once set, the implicit wait is set for the life of the WebDriver object instance.

driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);

Explicit Wait + Expected Conditions

An explicit waits is code you define to wait for a certain condition to occur before proceeding further in the code. The worst case of this is Thread.sleep(), which sets the condition to an exact time period to wait. There are some convenience methods provided that help you write code that will wait only as long as required. WebDriverWait in combination with ExpectedCondition is one way this can be accomplished.

WebDriverWait wait = new WebDriverWait(driver, 10);
WebElement element = wait.until(
        ExpectedConditions.visibilityOfElementLocated(By.id("someid")));

User · Answer

Another way to wait for maximum of certain amount say 10 seconds of time for the element to be displayed as below     new WebDriverWait driver  10   until new ExpectedCondition lt Boolean gt                  public Boolean apply WebDriver d                    return d findElement By id   lt name gt     isDisplayed

User · Answer

WebElement myDynamicElement    new WebDriverWait driver  10    until ExpectedConditions presenceOfElementLocated By id  myDynamicElement           This waits up to 10 seconds before throwing a TimeoutException or if   it finds the element will return it in 0 - 10 seconds  WebDriverWait   by default calls the ExpectedCondition every 500 milliseconds until it   returns successfully  A successful return is for ExpectedCondition   type is Boolean return true or not null return value for all other   ExpectedCondition types      WebDriverWait wait   new WebDriverWait driver  10   WebElement element   wait until ExpectedConditions elementToBeClickable By id  someid           Element is Clickable - it is Displayed and Enabled    From WebDriver docs  Explicit and Implicit Waits

User · Answer

For individual element the code below could be used   private boolean isElementPresent By by            try               driver findElement by               return true            catch  NoSuchElementException e                return false                  for  int second   0   second                  if  second  gt   60                   fail  timeout                              try                   if  isElementPresent By id  someid                          break                                                  catch  Exception e                               Thread sleep 1000

User · Answer

Well the thing is that you probably actually don t want the test to run indefinitely  You just want to wait a longer amount of time before the library decides the element doesn t exist  In that case  the most elegant solution is to use implicit wait  which is designed for just that   driver manage   timeouts   implicitlyWait

[java] Equivalent of waitForVisible/waitForElementPresent in Selenium WebDriver tests using Java?

Implicit and Explicit Waits

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