What is the best approach for Timeout using Selenium using Webdriver
Solution 1
Thread.Sleep() is a very discouraged way to implement your waits
This code is outlined on the selenium documentation http://seleniumhq.org/docs/04_webdriver_advanced.html
WebDriverWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(10));
IWebElement category = wait.Until<IWebElement>((d) =>
{
return d.FindElement(By.Id("ctl00_ContentPlaceHolder1_Filter"));
});
That is an example of an explicit wait where selenium will not execute any actions until your element is found
An example of an implicit wait is:
driver.Manage().Timeouts().ImplicitlyWait(TimeSpan.FromSeconds(10));
IWebElement category = driver.FindElement(By.Id("ctl00_ContentPlaceHolder1_Filter"));
In implicit waits the driver will wait for a given amount of time and poll the DOM for any elements that do not exist.
EDIT
public WaitForElement(string el_id)
{
WebDriverWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(10));
IWebElement category = wait.Until<IWebElement>((d) =>
{
return d.FindElement(By.Id(el_id));
});
}
Solution 2
I solve this problem by using WebDriverWait too.
But I set wait till the last element shown up (ex: the footer, the last item in the list).
WebDriverWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(10));
wait.Until(d => d.FindElement(By.Id("footer")).Displayed);
or
WebDriverWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(10));
wait.Until(d => d.FindElements(By.TagName("li")).Last().Displayed);
Solution 3
There are some cases where you do need to wait, in which case the Task.Delay method will provide more predictable results than Thread.Sleep
Task.Delay(1000).Wait(); // Wait 1 second
Comments
-
Nick Kahn almost 2 years
I have run into a problem. My web page has a
DropDownList
control. Once theDropDownList
value changes (by selecting a different value), the page refreshes and it renders the contents.And then I have to use
Thread.Sleep(2000);
before it goes andFindElement
.My question: What is the best way to wait till the page loads?
I have so many instances of
Thread.Sleep(2000)
in my code that I am beginning to think this is not the best way to approach the problem.Here is my code:
[TestInitialize()] public void Setup() { if (BaseIntegrationTest.browserType.Equals(BaseIntegrationTest.IE)) { driver = new InternetExplorerDriver(); } else if (BaseIntegrationTest.browserType.Equals(BaseIntegrationTest.CHROME)) { //driver = new ChromeDriver(); } else if (BaseIntegrationTest.browserType.Equals(BaseIntegrationTest.FIREFOX)) { driver = new FirefoxDriver(); } }
And the second part:
[TestMethod] public void testVerifyData() { // ................... // ................... driver.FindElement(By.XPath("//*[@id='ctl00_NavigationControl1_lnke']")).Click(); Thread.Sleep(2000); //select from the dropdownlist. IWebElement catagory = driver.FindElement(By.Id("ctl00_ContentPlaceHolder1_Filter")); SelectElement selectCatagory = new SelectElement(catagory); selectCatagory.SelectByText("Employee"); Thread.Sleep(2000); // ................... // ................... }