Testing a negative flow in Selenium webdriver - selenium

Issue:- webelement (Button) isdisplayed() doesn't works for negative scenarios
Requirement:- I need to fail a test flow in case a button is not displayed on the screen and if its present, then proceed with the flow
Code:-
if (driver.findElement(By.id("button")).isDisplayed() == false) {
System.out.println("The Button isn't present. Exiting!!");
driver.findElement(By.linkText("Logout")).click();
}
else
{
//Proceed with the positive flow
}
In above code, if the button is not present at all on the screen, the test should fail (if statement should be executed, but it's not)

As TestAutomationEngr has mentioned, make sure there is only one type of such button on the page...
one more way you could test for negative flow in webdriver is by using a try and catch..
In your case,
boolean buttonFound=false;
try
{
new WebDriverWait(driver,10).until(ExpectedConditions.visibilityOfElementLocated(By.id("button")));
buttonFound=true;
}catch(Exception e)
{
System.out.println("The Button isn't present. Exiting!!");
driver.findElement(By.linkText("Logout")).click();
}
if(buttonFound)
{
//positive flow
}
here it'l wait for 10 secs for visibility of element,
if found, buttonFound is set to true,hence positive flow is executed
if not found, the message in catch clause will be displayed and logout link will be clicked

In fact it is not required to logout in case an exception is thrown because when the driver is closed this session will be lost. The following code will fail the test in case the element is not present or it is not enabled.
WebElement elem = driver.findElement(By.id("button"));
Assert.assertTrue(elem.isEnabled());
At the end you just need to close the driver in the test teardown the
driver.close()

You can use the FindElements.Count approach.
Like this:
public bool IsElementDisplayed(IWebDriver driver, By element)
{
if (driver.FindElements(element).Count > 0)
{
if (driver.FindElement(element).Displayed)
return true;
else
return false;
}
else
{
return false;
}
}
Hope it helps.

Related

isDisplayed() was not working, am using pagefactory

if (wait.until(ExpectedConditions.elementToBeClickable(user.profileEdit)).isDisplayed()) {
wait.until(ExpectedConditions.elementToBeClickable(user.profileEdit)).click();
System.out.println("RECORD FOUND");
} else {
System.out.println("NO RECORD FOUND");
}
}
Thanks in advance!
wait.until(ExpectedConditions.elementToBeClickable(user.profileEdit)) - if element will not be clickable, TimeoutException will be thrown and .isDisplayed() will not be perform - you should choose wait or isDisplayed and rewrite your code accroding to it.
Element could be in frame if wait not work - you need just switch frame.
NoSuchElementException will be thrown in your case if user.profileEdit
element were initialized before it have been appeared - you can rewrite your test like this
test() {
element.click();
....
assertThat(driver.findElement(By.xpath("user.profileEdit")).isDisplayed())
.as("RECORD NOT FOUND");
}

Wait for element for certain amount of time

I have been experiencing one issue during test automation implementation. Particularly test checks if a hamburger menu is displayed.
So far I defined the element and subelement, and I need to really wait just one second, and not to waste time If I know that element will not be displayed after several seconds.
WebDriverWait wait = new WebDriverWait(getDriver(), 1);
WebElement hamMenu = el.findElement(By.xpath(HAMBURGER_MENU_GENERAL_XPATH));
How to implement the method findElement in the way it will try to find the element in one sec? I do not wish to stay longer... Thanks
Try this -
WebElement elem = new WebDriverWait(driver, 1).until(ExpectedConditions.visibilityOfElementLocated(By.xpath(HAMBURGER_MENU_GENERAL_XPATH)));
If I summarize your requirement is as follows :
Check if a hamburger menu is displayed only for 1 second : You need WebDriverWait with proper ExpectedConditions
Element may/not not be displayed after several seconds : You need to wrapup your code in a try-catch {} block to be able to proceed further in absence of the hamburger.
Youe effective code can be :
try {
WebElement hamburger = new WebDriverWait(getDriver(), 1).until(ExpectedConditions.visibilityOfElementLocated(By.xpath("HAMBURGER_MENU_GENERAL_XPATH")));
System.out.println("Hamburger is displayed in 1 sec");
//rest of your code
} catch (NoSuchElementException e){
System.out.println("Hamburger wasn't displayed in 1 sec");
//rest of your code
}
I got it. Thanks for all hints. This will wait just only for short time which is intended.
public boolean isHamMenuDisplayed(){
getDriver().manage().timeouts().implicitlyWait(1, TimeUnit.SECONDS);
if (el.findElements(By.xpath(HAMBURGER_MENU_GENERAL_XPATH)).size() == 0)
return false;
else
return true;}

Element not found - Selenium

I have written a piece of code to login into an application which is working fine. Now I have to click an add button, and I have tried it by Id, XPath, ClassName but it just gives me the exception of element not found. I thought I should apply an explicit wait, but it also did not work. Please check my code below:
public static void Login()
{
Browser.Url = "http://example.com";
_username = Browser.FindElement(By.Id("UserName"));
var password = Browser.FindElement(By.Id("Password"));
var loginbtn = Browser.FindElement(By.ClassName("btn-primary"));
_username.SendKeys("admin");
password.SendKeys("123");
loginbtn.Click();
var supplierTab = Browser.FindElement(By.Id("mainSupplier"));
supplierTab.Click();
WebDriverWait wait = new WebDriverWait(Browser, TimeSpan.FromSeconds(20));
IWebElement myDynamicElement = wait.Until<IWebElement>((d) =>
{
try
{
return d.FindElement(By.Id("btnAddSupplier_SupplierForm"));
}
catch
{
return null;
}
});
var addbtn = Browser.FindElement(By.Id("btnAddSupplier_SupplierForm"));
addbtn.Click();
}
This always gives an exception on the second last line of code that element not found.
Here is the HTML:
Try the following
public static void Login()
{
Browser.Url = "http://example.com";
_username = Browser.FindElement(By.Id("UserName"));
var password = Browser.FindElement(By.Id("Password"));
var loginbtn = Browser.FindElement(By.ClassName("btn-primary"));
_username.SendKeys("admin");
password.SendKeys("123");
loginbtn.Click();
//I think you have mentioned the iframe exist and assuming the element is inside the iframe do the following. If not skip the SwitchTo() part
//you can use name, css to identify the iframe
Browser.SwitchTo().Frame(Browser.FindElement(By.XPath("xpath for the iframe")));
var supplierTab = Browser.FindElement(By.Id("mainSupplier"));
supplierTab.Click();
WebDriverWait wait = new WebDriverWait(Browser, TimeSpan.FromSeconds(20));
IWebElement myDynamicElement = wait.Until<IWebElement>((d) =>
{
return d.FindElement(By.Id("btnAddSupplier_SupplierForm"));
});
//if you think the id is not unique try using xpath or css
//even though you added an explicit wait you never used it
myDynamicElement.Click();
}
Sometimes the element will be existing in the source code but will not be visible for selenium to perform a click operation. Try the below code which will wait until the element is visible:
WebDriverWait wait = new WebDriverWait(_driver, TimeSpan.FromSeconds(20));
IWebElement element = wait.Until(
ExpectedConditions.ElementIsVisible(By.Id("btnAddSupplier_SupplierForm")));
element.Click();
Not sure if this would help, but try calling this function before you click on Add button:
void waitForPageLoad(WebDriver driver)
{
ExpectedCondition<Boolean> pageLoadCondition = new ExpectedCondition<Boolean>() {
public Boolean apply(WebDriver driver) {
return ((JavascriptExecutor)driver).executeScript("return document.readyState").equals("complete");
}
};
wait.until(pageLoadCondition);
}
A NoSuchElementException is thrown when the locating mechanism used is not available in the dom.
A TimeoutException is thrown when your expected condition fails to be true within the time limit. An expected condition can be anything, (exists,visibility,attribute value etc...).
First you want to figure out if the element's locating mechanism you are using is indeed not found in the dom. Here is a good way to manually find out.
Open chrome and navigate to the page.
Open chrome dev tools and click on the console tab.
In the text box type $x("//*[#id='btnAddSupplier_SupplierForm']") and hit enter. This will run an xpath query, basically you are looking for any element that has an id attribute with value "btnAddSupplier_SupplierForm".
If an element appears in the console and is the correct element then it's likely that you are trying to find an element in the dom before the dom is finished loading. If no element appears in the console then you have a bad locator.
Please report your findings.

wait on handler registering - selenium

There is a html page with button, and my selenium test is testing, that there is an action executed, when the button is clicked.
The problem is, that it looks like the click happens before the javascript is executed - before the handler is bound to the page. The consequence is, that the selenium test will click on the button, but no action happens.
I can solve this problem by repeatedly trying to click and then observe, if the desired action happened (some element is present on page, typically). I'd like to hear that there are some more elegant solutions...
There is no clear way to say "wait until element X has such-and-such handler"; this is a limitation of JavaScript and the DOM (see for example Get event listeners attached to node using addEventListener and jQuery find events handlers registered with an object), and for that matter a selenium Expected Condition can't be created, at least not trivially.
I've resorted to time.sleep(0.5).
You can write some logic to handle this.
I have write a method that will return the WebElement and this method will be called three times or you can increase the time and add a null check for WebElement
Here is an example
public static void main(String[] args) {
WebDriver driver = new FirefoxDriver();
driver.get("https://www.crowdanalytix.com/#home");
WebElement webElement = getWebElement(driver, "homekkkkkkkkkkkk");
int i = 1;
while (webElement == null && i < 4) {
webElement = getWebElement(driver, "homessssssssssss");
System.out.println("calling");
i++;
}
System.out.println(webElement.getTagName());
System.out.println("End");
driver.close();
}
public static WebElement getWebElement(WebDriver driver, String id) {
WebElement myDynamicElement = null;
try {
myDynamicElement = (new WebDriverWait(driver, 10))
.until(ExpectedConditions.presenceOfElementLocated(By
.id(id)));
return myDynamicElement;
} catch (TimeoutException ex) {
return null;
}
}

Selenium NoAlertPresentException

I'm trying to handle dialog (Ok Cancel type) with selenium WebDriver. So my aim is to click "Ok" button.
Scenario is:
Click button for invoking dialog
button.click();
Try to accept
webDriver.switchTo().alert().accept();
But I'm always getting NoAlertPresentException and seeing that dialog closes almost immediately.
It seems to me that Selenium automatically closes dialog and when I want to accept, there is nothing to accept.
I'm sorry for my bad English.
The usual cause of this issue is that Selenium is too quick and tries to accept an alert that has not yet been opened by the browser. This can be simply fixed by an explicit wait:
button.click();
WebDriverWait wait = new WebDriverWait(driver, 5);
Alert alert = wait.until(ExpectedConditions.alertIsPresent());
alert.accept();
Step 1:
public boolean isAlertPresent(){
boolean foundAlert = false;
WebDriverWait wait = new WebDriverWait(driver, 0 /*timeout in seconds*/);
try {
wait.until(ExpectedConditions.alertIsPresent());
foundAlert = true;
System.out.println("isAlertPresent : " +foundAlert);
} catch (TimeoutException eTO) {
foundAlert = false;
System.out.println("isAlertPresent : " +foundAlert);
}
return foundAlert;
}
Step 2:
public boolean tocheck_POP_Dialog()
{ Alert alert;
try
{
alert=driver.switchTo().alert();
}
catch(NoSuchElementException elementException)
{
return false;
}
alert.accept(); //Close Alert popup
return true;
}
Step 3 :
if(dummyPage.isAlertPresent())
{
dummyPage.tocheck_POP_Dialog();
}
public boolean isAlertPresent(){
try{
Alert a = new WebDriverWait(driver, 10).until(ExpectedConditions.alertIsPresent());
if(a!=null){
System.out.println("Alert is present");
driver.switchTo().alert().accept();
return true;
}else{
throw new Throwable();
}
}
catch (Throwable e) {
System.err.println("Alert isn't present!!");
return false;
}
}
Use explicit wait to check the alert and then do the operation. This might help you. :)
Generally it happens because Selenium commands run too quick and it tries to close the alert before it is open. Hence, adding a delay after click event should resolve the issue. Also, if you are using Safari browser for your test, there is some issue with SafariDriver in handling alerts. SafariDriver cannot handle alerts should provide you more details.
Some additional info. for future readers of this thread:
If this exception persists even after the wait aspect is addressed, please check if the following sequence of steps is effective in the test script:
the underlying Html page's DOM is queried/parsed for some purpose (e.g. to look for Form errors)
(before the) driver.switch_to.alert is attempted
When an Alert is shown over an Html page, if the Alert is overlooked and the DOM underlying the Html page is queried first, the Webdriver appears to loose track of the Alert & causes the Exception.
This was observed with: geckodriver 0.21.0, Firefox 66.0b10 (64-bit) ; python 3.6.1 Selenium driver 3.14 (for Python).
Performing (2) before (1) was found to resolve the issue.