Synchronization in selenium webdriver Using Explicit wait and Expected Conditions.
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Explicit Waits
WebDriverWait class
Expected conditions class
Explicit wait in selenium webdriver c# :
An explicit wait can only be implemented in cases where synchronization is needed for an element and the rest of the script is working fine.
Explicit wait can be used to verify the page title, page url or to find the element.
The Selenium WebDriver provides WebDriverWait and ExpectedCondition classes for implementing an explicit wait.
The WebDriverWait object will call the ExpectedConditions class method for every 500 milliseconds until it returns successfully or specified time is over.
Usage: WebDriverWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(20)); wait.Until(ExpectedConditions.ElementExists(By.ClassName("ContactUs")));
Expected Condition class and its methods :
Supplies a set of common conditions that can be waited
All methods in this class are static
Some of the methods are overloaded methods
We can write custom Expected conditions method
Explicit waits are called intelligent waits as they are having various conditions
AlertIsPresent
AlertState
ElementExists
ElementIsVisible
ElementSelectionStateToBe
ElementToBeClickable
ElementToBeSelected
FrameToBeAvailableAndSwitchToIt
InvisibilityOfElementLocated
InvisibilityOfElementWithText
PresenceOfAllElementsLocatedBy
StalenessOf
TextToBePresentInElement
TextToBePresentInElementLocated
TextToBePresentInElementValue
TitleContains
TitleIs
UrlContains
UrlToBe
VisibilityOfAllElementsLocatedBy
Possible Interview Questions on selenium synchronization using explicit wait :
What is Explicit Wait .
Which are the different methods present in Expected Condition class .
Code :
[TestMethod]
public void SynchronizationUsingExplicitWait()
{
IWebDriver driver = new FirefoxDriver();
//driver.Manage().Timeouts().ImplicitlyWait(TimeSpan.FromSeconds(12));
driver.Url = "[ Ссылка ]";
driver.FindElement(By.PartialLinkText("This is")).Click();
//Thread.Sleep(12000);
WebDriverWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(12));
wait.PollingInterval = TimeSpan.FromMilliseconds(50);
wait.Until(ExpectedConditions.ElementExists(By.ClassName("ContactUs")));
string result = driver.FindElement(By.ClassName("ContactUs")).Text;
Assert.IsTrue(result.Contains("Python"));
driver.Quit();
}
