selenium wait until method returns true

Question

I know that selenium webdriver can do that:

var wait = new WebDriverWait(driver, TimeSpan.FromSeconds(10)).Until(ExpectedConditions.VisibilityOfAllElementsLocatedBy(By.ClassName("someclass")));

can't I do that on my method? For example I have a method which takes a screenshot and compares with another picture. I want to wait until that method returns true.

So I have this code

while (WelcomeScreen(driver) != true)
{
    Thread.Sleep(1000);   
}

Can't I find any better solution?

Gaurang Shah · Accepted Answer · 2017-06-13 14:13:15Z

6

you can use the FluentWait, I am not good with C# so following code example is in Java. if you can convert it to C#, I think it might work.

 Wait wait = new FluentWait<WebDriver>(driver)
        .withTimeout(30, TimeUnit.SECONDS)
        .pollingEvery(5, TimeUnit.SECONDS)
        .ignoring(NoSuchElementException.class);

 wait.until(new Function<WebDriver, Boolean>() {
                public Boolean apply(WebDriver driver) {
                    return WelcomeScreen(driver)
                }
              }
 );

edited Jun 13, 2017 at 14:13

answered Jun 13, 2017 at 13:53

Gaurang Shah

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4 Comments

gsiradze Over a year ago

thanks for answer. equivalent in c# will be this code: wait.Until((x) => { if(WelcomeScreen(driver)) return true; return false; });

Happy Bird Over a year ago

Is it possible to pass the method (in this case public Boolean apply(WebDriver driver) { return WelcomeScreen(driver) } as a parameter?

Gaurang Shah Over a year ago

@HappyBird what do you mean by passing the method, it returns the value returned by WelcomeScreen method.

Happy Bird Over a year ago

The code you have posted, I like this. I want to put it in a method "WaitUntilTrue" and to this method, I want to pass "Welcomescreen(driver)". I think I already found the answer by using an Action delegate (stackoverflow.com/questions/5414515/…)

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