[Selenium + C#] Check if element is displayed

[Rafael C.]

Hello,

Currently I'm trying check if an element is displayed, but the code in visual studio appears as wrong. See my method:

        [Test]

        public void d_RetornaResultados()

        {

            if (Assert.IsTrue(driver.FindElement(By.Id("recommend_selenium_link")).Displayed));

            {

                Console.WriteLine("Is presente");

            }

            else

            {

                Console.WriteLine("Not present");

            }

        }

This condition is right?

Thanks

[david...@sap.com]

Two things are wrong in your code, you have a ';' at the end of your if statement and I would remove the Assert and simply test if the element is displayed:
if (driver.FindElement(By.Id("recommend_selenium_link")).Displayed)

[Brian Kitchener]

Your Assert does the condition checking and will log an error if incorrect, so you don't want it in an if statement.  

Assert.IsTrue(driver.FindElement(By.Id("selenium_link")).Displayed, "The element is not displayed");

Console.WriteLine("Since the assert didn't terminate the test the element bust be displayed");

However, remember that the Displayed boolean only works for an element that is present on the page and not hidden to the user.  If the element isn't found, the assert will never trigger as webdriver will throw an ElementNotFound exception.  

So, if you want to check that an element is PRESENT. you need to use findElements and verify the count.  

Assert.IsTrue(driver.FindElements(By.Id("Selenium_ID")).Count > 0)  //element is present (but may be hidden).  

To Verify an element is both present and visible, a little more logic is needed to avoid duplicate finds.  

var elements = driver.FindElements(By.Id("selenium_id"));

Assert.IsTrue(elements.count > 0 && elements[0].Displayed);

[Serguei Kouzmine]

Please note that with C# Selenium Client API you can also use the followung (the example  uses Powershell syntax, easily convertable to C# )

[OpenQA.Selenium.Support.UI.WebDriverWait]$wait = New-Object OpenQA.Selenium.Support.UI.WebDriverWait ($selenium,[System.TimeSpan]::FromSeconds(10))
$wait.PollingInterval = 150
[void]$wait.Until([OpenQA.Selenium.Support.UI.ExpectedConditions]::ElementExists([OpenQA.Selenium.By]::ClassName("logo")))
[void]$wait.Until([OpenQA.Selenium.Support.UI.ExpectedConditions]::ElementIsVisible([OpenQA.Selenium.By]::XPath($xpath1)))
...
Hope this helps

Serguei Kouzmine

 

On Monday, January 12, 2015 at 8:03:33 AM UTC-5, Rafael C. wrote:

[Rafael C.]

Any ideia?

Cheers,

Rafael

[praveen kumar cherukuri]

Hello, 

"If" condition expects a boolean value as input. But in the code snippet, if condition is fed with an Assert (which don't return any value)

You can fix the code either by removing the assert condition inside if condition. Or by removing the if condition itself. 

To improvise your code, 

Assert itself provides an option to add a console message if the assertion fails. 

Refer : https://msdn.microsoft.com/en-us/library/ms243805.aspx

Good luck

/Praveen. 

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[Darrin Cherry]

I think others described why the Assert was being used incorrectly, but here is a bit more code if you have trouble finding if the 

element is actually visible to the user or not.

If you wish for something more advanced than a simple .Displayed, you can use a section of code from here:

https://github.com/DovetailSoftware/cactus-pageobject/blob/master/Cactus-pageobject/Cactus/Drivers/Controls.cs

public bool IsElementVisible

For the assert what we usually do is something around these lines:

Assert, add your custom fail message into the assert.
If you want to show a "Pass" you can add it to the next line with logging software or a simple Console.WriteLine("Pass X was visible");

            Assert.IsTrue(controlAssert.Control.IsElementVisible, "FAIL: " + controlAssert.Control.MyBy + " was not visible");
 
            new UxTestingLogger().LogInfo("PASS: " + controlAssert.Control.MyBy + " is visible");
            new TestLineStatusWithEvent().Status(TestStatus.Passed);

There is a full page of asserts for Selenium located here:
https://github.com/DovetailSoftware/cactus-pageobject/blob/master/Cactus-pageobject/Cactus/Drivers/ControlAssertExtensions.cs