I'm looking forward for a proper explanation about the selenium webdriver polling time in Selenium.
As I know, below wait command will wait for 40 seconds until the specific element get clickable
public void CreateSalesOrder(){
WebDriverWait wait = new WebDriverWait(driver, 40);
wait.until(ExpectedConditions.elementToBeClickable(btnNewSalesOrser));
btnNewSalesOrser.click();
}
In the 2nd code snippet I've added "Polling" command.
public void CreateSalesOrder(){
WebDriverWait wait = new WebDriverWait(driver, 40);
wait.pollingEvery(2, TimeUnit.SECONDS);
wait.until(ExpectedConditions.elementToBeClickable(btnNewSalesOrser));
btnNewSalesOrser.click();
}
What is the use of polling time ?
If we didn't mention any polling time, selenium will take the default polling time as 500milli seconds. i.e.., script will check for the excepted condition for the webelement in the web page every 500 milli seconds. Your first code snippet works with this.
We use pollingEvery to override the default polling time. In the below example(your second code snippet), the script checks for the expected condition for every 2 seconds and not for 500 milliseconds.
public void CreateSalesOrder()
{
WebDriverWait wait = new WebDriverWait(driver, 40);
wait.pollingEvery(2, TimeUnit.SECONDS);
wait.until(ExpectedConditions.elementToBeClickable(btnNewSalesOrser));
btnNewSalesOrser.click();
}
This polling frequency may actually help in reducing the CPU overload.
Refer this javadoc for more info pollingEvery.
Hope this helps you. Thanks.
Using WebDriverWait wait = new WebDriverWait(driver, 40); the driver will wait a maximum of 40 seconds until the condition is fulfilled.
Using wait.pollingEvery(2, TimeUnit.SECONDS); specifies that the driver will do the checks (to see if the condition is fulfilled) every 2 seconds until the condition is fulfilled.
In sum this means that your driver will do a check every 2 seconds for a period of 40 seconds.
You could also specify the polling interval as a shortcut in the Constructor:
WebDriverWait wait = new WebDriverWait(driver, 40, TimeUnit.SECONDS.toMillis(2));
For understanding the explanation, you have to understand the polling time for Explicit Wait.
WebDriverWait wait = new WebDriverWait(driver, 40);
This waits up to 40 seconds before throwing a TimeoutException unless it finds the element to return within 40 seconds. WebDriverWait by default calls the ExpectedCondition every 500 milliseconds until it returns successfully hence the default polling time for ExplicitWait is 500 milliseconds.
wait.pollingEvery(2, TimeUnit.SECONDS);
In this case, the polling time is 2 seconds i.e the Expected condition will not be checked after every 500 milliseconds, it should be checked after 2 seconds until the specific elements get clickable.
Related
I am automating an application were , Explicit wait is not working .
My requirement is to wait for a particular element until it is loaded/ visible or clickable to perform next action.
I tried all the expectedconditions in explicit but it failed. only sleep is working.
One thing that i have noticed is that , web browser is not load but page is loading and hence the explicit functionality doesnt work.
Could some one help me in this?
Please find the attached
Due to the fact that your question is rather general I can only provide a general answer at this point. You could wait until your page as a whole has been loaded before you proceed with the testing. (I would suggest this as you claim to have issues where the browser does not seem to be completely ready when you proceed with your testing)
This can be done using the following code:
IWait<IWebDriver> wait = new OpenQA.Selenium.Support.UI.WebDriverWait(driver, TimeSpan.FromSeconds(30.00));
wait.Until(driver1 => ((IJavaScriptExecutor)driver).ExecuteScript("return document.readyState").Equals("complete"))
*This code is not mine it has been sourced from
Wait for page load in Selenium
Explicit Wait i.e. WebDriverWait is proven & efficient and it is working just perfect in conjunction with ExpectedConditions.
As your requirement is to wait for a particular element until it is loaded/ visible or clickable to perform next action you can use the below block of code :
WebDriver driver = new FirefoxDriver();
driver.get("http://somedomain/url_that_delays_loading");
WebElement myDynamicElement = (new WebDriverWait(driver, 10)).until(ExpectedConditions.elementToBeClickable(By.id("myDynamicElement")));
myDynamicElement.click();
This type of issues occurs when the web element takes little more time to load than usual time. In this case, we have use polling mechanism in the given interval which is fluentWait. Below is the helpful code.
public WebElement fluentWait(final By locator) {
Wait<WebDriver> wait = new FluentWait<WebDriver>(driver)
.withTimeout(10, TimeUnit.SECONDS)
.pollingEvery(1, TimeUnit.SECONDS)
.ignoring(NoSuchElementException.class);
WebElement foo = wait.until(new Function<WebDriver, WebElement>() {
public WebElement apply(WebDriver _driver) {
return driver.findElement(locator);
}
});
return foo;
};
There is three type of wait in selenium.
implicit Wait
Explicit Wait
Fluent Wait
Implicit Wait
driver.manage().timeouts().implicitlyWait(TimeOut, TimeUnit.SECONDS);
Explicit wait
WebDriverWait wait = new WebDriverWait(WebDriver,TimeOut);
Fluent Wait
Wait wait = new FluentWait(WebDriver reference).withTimeout(timeout, SECONDS).pollingEvery(timeout, SECONDS).ignoring(Exception.class);
Fore more information how to use all wait with example please go to below URL.
https://trickyautomationworld.blogspot.in/2018/02/implicit-wait-vs-explicit-wait-vs.html
I'm automating this website But facing the issue with ExplicitWaitConditions to manage the time.
Scenario is When i click on Login link or Submit button after send username, It shows a loader during the process, once process has completed the loader get removed from DOM.
I have used condition for invisibilityOfElementLocated like below
new WebDriverWait(driver, 60).until(ExpectedConditions.invisibilityOfElementLocated(By.id("loading-bar")));
But this can't predict correct time it taking more time (not exectly 60 sec but around 15-20 or may be 30 sec.) then allow to execute next command.
The same line i have to put before 4 commands to do complete login process. So it seems to consumed around 90 second to do login.
If i do not use Explicitwait or remove Impliciwait wait then script failed all time as loader get click instead of some other element.
The code i tried so far :
WebDriver driver = new FirefoxDriver();
System.out.println("Browser Opened");
driver.manage().window().maximize();
driver.get("https://www.rcontacts.in");
driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);
System.out.println("URL Opened");
new WebDriverWait(driver, 60).until(ExpectedConditions.invisibilityOfElementLocated(By.id("loading-bar")));
driver.findElement(By.cssSelector(".ng-scope>a span[translate='login.register']")).click();
System.out.println("Register Link Clicked");
driver.findElement(By.name("userId")).sendKeys("9422307801");
new WebDriverWait(driver, 60).until(ExpectedConditions.invisibilityOfElementLocated(By.id("loading-bar")));
driver.findElement(By.xpath("//button[#type='submit']")).click();
System.out.println("Mobile number entered");
new WebDriverWait(driver, 60).until(ExpectedConditions.invisibilityOfElementLocated(By.id("loading-bar")));
Is there any solution that as soon as loader get removed it start performing actions ?
OR is there any way that I can wait until loader element get removed from DOM. Once removed then i can continue the further actions ?.
According to the docs,
WARNING: Do not mix implicit and explicit waits. Doing so can cause unpredictable wait times.
That's likely the cause of your issues. It's recommended to not use implicit waits. I would remove them and then add explicit waits as needed and see how that goes.
I took your code and rewrote it (below) and it's working every time for me.
String url = "https://www.rcontacts.in";
driver.navigate().to(url);
waitForLoader();
driver.findElement(By.cssSelector("span[translate='login.register']")).click();
waitForLoader();
driver.findElement(By.cssSelector("input[name='userId']")).sendKeys("9422307801");
driver.findElement(By.cssSelector("button[translate='common.btns.next']")).click();
The issue I was having at times was that many times the script was jumping ahead. I added code to waitForLoader() to wait for the loader to appear (be visible) and then disappear (be invisible). Once I did that, it worked 100% of the time.
public static void waitForLoader()
{
WebDriverWait wait = new WebDriverWait(driver, 10);
wait.until(ExpectedConditions.visibilityOfAllElementsLocatedBy(By.id("loading-bar")));
wait.until(ExpectedConditions.invisibilityOfElementLocated(By.id("loading-bar")));
}
First and foremost, you have induced implicitlyWait() as follows:
driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);
As well as WebDriverWait() as follows:
new WebDriverWait(driver, 60).until(ExpectedConditions.invisibilityOfElementLocated(By.id("loading-bar")));
As per the documentation of Explicit and Implicit Waits it is clearly mentioned that:
Do not mix implicit and explicit waits. Doing so can cause unpredictable wait times. For example setting an implicit wait of 10 seconds and an explicit wait of 15 seconds, could cause a timeout to occur after 20 seconds.
Again, it seems changing the ExpectedConditions clause from invisibilityOfElementLocated(By.id("loading-bar") to elementToBeClickable(By.xpath("//span[contains(text(),'Register')]") gives me a success rate of 80%. Here is the effective code block on my Windows 8 box:
System.setProperty("webdriver.gecko.driver", "C:\\Utility\\BrowserDrivers\\geckodriver.exe");
WebDriver driver = new FirefoxDriver();
driver.get("https://www.rcontacts.in");
System.out.println("URL Opened");
WebDriverWait wait = new WebDriverWait (driver, 15);
wait.until(ExpectedConditions.elementToBeClickable(By.xpath("//span[contains(text(),'Register')]")));
driver.findElement(By.xpath("//span[contains(text(),'Register')]")).click();
System.out.println("Register Link clicked");
Note: Always invoke driver.quit() within tearDown(){} method to close & destroy the WebDriver and Web Client instances gracefully to ensure that no dangling instance of geckodriver is present (through Task Manager) while you initiate the execution.
Step:1
WebDriver wd = new FirefoxDriver();
//Removed this code after stackoverflow suggestion in comments
//wd.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS);
wd.manage().timeouts().pageLoadTimeout(5, TimeUnit.SECONDS);
wd.get("http:\\some url");
Step:2
(new WebDriverWait(wd, 5)).until(ExpectedConditions.
presenceOfElementLocated(By.name("some name")));
Step:3
Some code going on......
I debug the above code, and the step 2 reached. But the step 3 is not reached after the given time out 5 seconds in any case. It is getting blocked until the page loaded fully.
The By.name("some name") is in the start of the page source.
But if i stop the browser manually from loading with in 15 seconds, then the step 3 is getting reached. So how the timeout 5 seconds is getting used here. And is there any way to reach step 3 with out manual stop or before the page load fully.?
I am using selenium 2.46.0 library and firefox 28.
And also checked with firefox version 35,36 & 37
The url takes at least 4 minutes to load fully in the internet connection which i am using
Please let me know if any additional details needed.
Thanks in advance.
#Jeet - I have gone through same issue. Work around I'm sharing which really works for me
Working Solution :
static void waitForPageLoad(WebDriver wdriver) {
WebDriverWait wait = new WebDriverWait(wdriver, 60);
Predicate<WebDriver> pageLoaded = new Predicate<WebDriver>() {
#Override
public boolean apply(WebDriver input) {
return ((JavascriptExecutor) input).executeScript("return document.readyState").equals("complete");
}
};
wait.until(pageLoaded);
}
I am using Appium to automate an iOS app but met a problem, is there anyone meet the same problem before?
Appium's implicitlyWait API seems to not work. I am using Java and JUnit to run the test, here is the line of code:
driver.manage().timeouts().implicitlyWait(50, TimeUnit.SECONDS);
I have checked the debug info in the appium console, it looks correctly:
info: [debug] Set iOS implicit wait to 50000ms
My Environment:
Latest Appium 1.2.1, Java client library 1.6.1, Selenium Java language binding 2.42.2 and sample app 'UICatalog'provided by Sauce Lab.
Thanks in advance for the reply.
The code you have posted manages the timeout to wait for a maximum of 50 seconds. It doesn't make the driver wait 50 seconds. You can use the wait like:
driver.wait(); //this will wait a max of 50 seconds cuz you said so
If you ask me the proper way you would want to use waiting on Webdriver is:
WebDriverWait wait;
wait = new WebDriverWait(driver, 60);
wait.until(ExpectedConditions.elementToBeClickable(By.id("blabla"));
The code above checks if blabla is clickable until that condition is proved or 60 seconds(stated above) passes the driver waits.
In Appium it is possible to set implicit way in this way:
Java code:
AppiumFieldDecorator decorator = new AppiumFieldDecorator(driver);
decorator.resetImplicitlyWaitTimeOut(50, TimeUnit.SECONDS);
PageFactory.initElements(decorator, this /* refers to current page object class*/);
Such timeout will work for the whole time.
It is not possible (at least I don't know) to change it.
As when web drivers are used you can do this with:
driver.manage().timeouts().implicitlyWait(0, TimeUnit.SECONDS);
// some actions for which you don't want to wait implicitly
driver.manage().timeouts().implicitlyWait(50, TimeUnit.SECONDS);
Try this:
public static void WaitForElementPresent1(String locator, int timeout)
{
WebDriverWait wait = new WebDriverWait(driver, timeout);
try{
wait.until(ExpectedConditions.visibilityOfElementLocated(By.xpath(locator)));
} catch (Exception e){
e.printStackTrace();
}
}
If you are using PageFactory model, you can specify the implicit wait with initElements() method as given below -
PageFactory.initElements(new AppiumFieldDecorator(driver, 10, TimeUnit.SECONDS), this);
I have tried this with Appium 1.6 and it works fine.
The new way of setting the implicit time out is using the code
AppiumFieldDecorator decorator = new AppiumFieldDecorator(mobDriver);
decorator.DEFAULT_IMPLICITLY_WAIT_TIMEOUT = longValue;
decorator.DEFAULT_TIMEUNIT = TimeUnit.TimeUnit ;
Hope this helps
I've got a problem with testing in Java. I'm using TestNG & Selenium. I wanted to run a method with annotaion #Test on long period of time, but it stopped in about 5000 seconds. I've tried to set attribute Timeout, but it didn't work for me. How can I control execution time of test method?
Sometimes I've noticed that my test method before stop after around 5000 seconds threw exception "org.openqa.selenium.remote.SessionNotFoundException: Session ID is null".
Use WebDriver Wait and Wait Until Expected Conditions before Performing Any Action on Any Element, So that testcases Never Fails due to Timing Issues
WebDriverWait wait = new WebDriverWait(driver, 80);// Maximum TimeOut
PageUtil.refreshObject(driver, By.linkText("Link_yu_want_to_click"));
wait.until(ExpectedConditions.elementToBeClickable(By.linkText("Link_yu_want_to_click")));