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The ValidateLength attribute in PowerShell is used to validate the length of the String. Generally how we write the command without the mentioned attribute is using the Length method and if/else condition for the string. For Example, Function ValidateStorageName { param ( [String]$StorageName ) if(($StorageName.Length -gt 3) -and ($StorageName.Length -lt 15)) { Write-Output "`nStorage Name validated" } else { Write-Output "`nStorage Name validation failed" } }Output−PS C:\> ValidateStorageName -StorageName Alpha Storage Name validated PS C:\> ValidateStorageName -StorageName CN Storage Name validation failedWith the ValidateLength attribute, else ... Read More
The ValidateSet attribute in PowerShell function is to validate the values entered from the set which means, it allows only specific values from the set. To understand better consider the below example, we have an array and we need to check if entered values are among array or not then we will use the below code.Function PetAnimalsCheck { param( [String]$Animal ) $Animals = "Cow", "Dog", "Cat", "Horse", "Camel", "Elephant" if($Animals -contains $Animal) { Write-Output "Animal is in the list of Pet Animals" } else { Write-Output ... Read More
Validation parameters are a set of rules that you define on the PowerShell variable and restrict users from entering some values and binding users to enter values in the specific domain. If there are not validation parameters the script would be lengthy. The ValidateRange attribute is one of them.ValidateRange AttributeThis parameter is to validate the specific range of numbers. For example, If we need users to enter a value between 5 and 100 and we simply write the script using the If/else statement as shown below.function AgeValidation { param( [int]$age ) if(($age -lt 5) ... Read More
We can get the href of elements found by partial link text with Selenium webdriver. First of all we need to identify the links with help of the find_elements_by_partial_link_text() method.Next to get hold of href of the links we have to use the get_attribute() method and then pass href as a parameter to the method.Let us identify the href attribute of links identified with partial link text Policy in the below page.Examplefrom selenium import webdriver driver = webdriver.Chrome(executable_path="C:\chromedriver.exe") driver.implicitly_wait(0.5) driver.get("https://www.tutorialspoint.com/about/about_careers.htm") #identify links with partial link text l= driver.find_elements_by_partial_link_text("Policy") #iterate links for i in l: #get href from get_attribute() print("Href value ... Read More
We can find an element in a sub-element with Selenium webdriver. First of all we need to identify the element with help of any of the locators like id, class, name, xpath or css. Then we have to identify the sub-element with the findElements(By.xpath()) method.We can identify the sub-element from the element, by localizing it with the element and then passing the expression (./child::*) as a parameter to the findElements(By.xpath())Syntaxelement.findElements(By.xpath("./child::*"))Let us identify the tagname of the sub-elements of element ul in below html code−Exampleimport org.openqa.selenium.By; import org.openqa.selenium.WebDriver; import org.openqa.selenium.WebElement; import org.openqa.selenium.chrome.ChromeDriver; import java.util.concurrent.TimeUnit; public class SubElement{ public static ... Read More
We can scroll down the page till page end with Selenium webdriver.Selenium cannot directly scroll up or down with its methods. This is done with the Javascript Executor. DOM can interact with the elements with Javascript.Selenium runs the commands in Javascript with the execute_script() method. For scrolling till the page down, we have to pass (0, document.body.scrollHeight) as parameters to the method scrollTo().Exampleimport org.openqa.selenium.By; import org.openqa.selenium.WebDriver; import org.openqa.selenium.WebElement; import org.openqa.selenium.chrome.ChromeDriver; import java.util.concurrent.TimeUnit; import org.openqa.selenium.JavascriptExecutor; public class ScrollTillPageEnd{ public static void main(String[] args) { System.setProperty("webdriver.chrome.driver", "C:\Users\ghs6kor\Desktop\Java\chromedriver.exe"); WebDriver driver = new ChromeDriver(); String url ... Read More
IntroductionIf name of a variable has parentheses (with or without parameters in it) in front of it, PHP parser tries to find a function whose name corresponds to value of the variable and executes it. Such a function is called variable function. This feature is useful in implementing callbacks, function tables etc.Variable functions can not be built eith language constructs such as include, require, echo etc. One can find a workaround though, using function wrappers.Variable function exampleIn following example, value of a variable matches with function of name. The function is thus called by putting parentheses in front of variableExample Live ... Read More
We can wait for the iframe to load completely with Selenium webdriver.First of all we need to identify the iframe with the help iframe id, name, number or webelement. Then we shall use the explicit wait concept in synchronization to wait for the iframe to load.We need to import org.openqa.selenium.support.ui.ExpectedConditions and import org.openqa.selenium.support.ui.WebDriverWait to incorporate expected conditions and WebDriverWait class. We will wait for the iframe to be loaded with the condition frameToBeAvailableAndSwitchToIt.Let us see an html document of a frame.Exampleimport org.openqa.selenium.By; import org.openqa.selenium.WebDriver; import org.openqa.selenium.WebElement; import org.openqa.selenium.chrome.ChromeDriver; import java.util.concurrent.TimeUnit; import org.openqa.selenium.support.ui.WebDriverWait; import org.openqa.selenium.support.ui.ExpectedConditions; public class FrameLoadWait{ public ... Read More
IntroductionPHP has a large number of built-in functions such as mathematical, string, date, array functions etc. It is also possible to define a function as per specific requirement. Such function is called user defined function.A function is a reusable block of statements that performs a specific task. This block is defined with function keyword and is given a name that starts with an alphabet or underscore. This function may be called from anywhere within the program any number of times.Syntax//define a function function myfunction($arg1, $arg2, ... $argn) { statement1; statement2; .. .. return $val; } ... Read More
We can test if an element is focused with Selenium webdriver. This is determined with the help of the activeElement() method. First of all we need to identify the element with help of any of the locators like id, class, name, xpath or css.Syntaxdriver.switchTo().activeElement();Let us consider the below edit box and check if it is focused.Exampleimport org.openqa.selenium.By; import org.openqa.selenium.WebDriver; import org.openqa.selenium.WebElement; import org.openqa.selenium.chrome.ChromeDriver; import java.util.concurrent.TimeUnit; public class ElementFocussed{ public static void main(String[] args) { System.setProperty("webdriver.chrome.driver", "C:\Users\ghs6kor\Desktop\Java\chromedriver.exe"); WebDriver driver = new ChromeDriver(); driver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS); driver.get("https://www.tutorialspoint.com/index.htm"); // identify ... Read More