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Articles on Trending Technologies
Technical articles with clear explanations and examples
Fill username and password using selenium in python.
We can fill username and password fields in a login page with Selenium. This is considered an authentication step for any application. Once the username and password is entered, we have to click the login button.ExampleCode Implementation.import time from selenium import webdriver driver = webdriver.Chrome (executable_path="C:\chromedriver.exe") driver.get("https://mail.rediff.com/cgi-bin/login.cgi") # identify username, password and signin elements driver.find_element_by_name("login").send_keys("tutorialspoint") time.sleep(0.2) driver.find_element_by_name("passwd").send_keys("pass123") time.sleep(0.4) driver.find_element_by_class_name("signinbtn").click() driver.closeIf a valid username and password is provided, we shall be directed to the home page of the application.Output
Read MoreTest if element is present using Selenium WebDriver?
We can verify if an element is present using Selenium. This can be determined with the help of findElements() method. It returns the list of elements matching the locator we passed as an argument to that method.In case there is no matching element, an empty list [having size = 0] will be returned. We are not using the findElement() method since if there is no matching element, this method gives NoSuchElementException.In an event of any exception, we have to handle it with a try catch block.ExampleCode Implementation.import 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 java.util.List; public class ...
Read MoreHow to take partial screenshot (frame) with Selenium WebDriver?
Whenever we encounter a failure during testing, it is a common nature to capture the screenshots wherever there is a deviation from the expected result. Thus it is considered a mandatory step to attach a screenshot for creating a bug.While automating a bunch of test cases of a considerable number, capturing screenshot is critical to infer why a test case has failed for both the development and testing team. As they debug the failures, going through the screenshot and conclude if the failure is due to script issue or defect in the application.Sometimes we may need to capture the screenshot ...
Read MoreCan selenium handle Windows based pop up?
Selenium can handle Windows based pop up. There may be scenarios where a web page opens more than one window after performing some actions on it. The child windows that get opened may be a pop up containing some information or advertisement.Selenium uses the getWindowHandles () and getWindowHandle () methods to work with child windows. The getWindowHandles () method contains all the window handle ids of the opened windows. The window id handles are held in the form of Set data structure [containing data type as String].The getWindowHandle () method is used to store the window handle id of the ...
Read MoreDifference between selenium IDE, RC & WebDriver.
The differences between selenium IDE, RC & Webdriver are listed below :FunctionalitiesSelenium IDESelenium RCSelenium WebdriverRecord and playbackIt has the record and playback feature.It does not have a record and playback.It does not have a record and playback.ServerIt requires no server to start execution of test cases.It requires the server to start execution of test cases.It requires no server to start execution of test cases.BrowserIt can be used for testing only in Firefox.It can be used for testing in the majority of browsers.It can be used for testing in the majority of browsers including in headless mode.Object OrientedIt is based on ...
Read MoreMinimize (max(A[i], B[j], C[k]) – min(A[i], B[j], C[k])) of three different sorted arrays in C++
ConceptWith respect of given three sorted arrays A, B, and C of not necessarily same sizes, compute the lowest i.e. minimum absolute difference between the maximum and minimum number of any triplet A[i], B[j], C[k] such that they are under arrays A, B and C respectively, i.e., minimize (max(A[i], B[j], C[k]) – min(A[i], B[j], C[k])).Input−A : [ 2, 5, 6, 9, 11 ] B : [ 7, 10, 16 ] C : [ 3, 4, 7, 7 ]Output−1ExplanationWhen we select A[i] = 6 , B[j] = 7, C[k] = 7, we get the minimum difference as max(A[i], B[j], C[k]) - ...
Read MoreHow to remove windows features using PowerShell?
To remove windows features, we can use command Remove-WindowsFeature command is used along with feature name.Remove-WindowsFeature Search-Service -VerboseVERBOSE: Uninstallation started... VERBOSE: Continue with removal? VERBOSE: Prerequisite processing started... VERBOSE: Prerequisite processing succeeded. Success Restart Needed Exit Code Feature Result ------- -------------- --------- -------------- True No Success {Windows Search Service} VERBOSE: Uninstallation succeeded.If the windows feature has the management tools like as in Web-Server (IIS) feature, you can add the same in the command line. If the server requires restart then you can add the -Restart parameter. For example, Remove-WindowsFeature Web-Server -IncludeManagementTools -Restart -VerboseIf we check the -Name parameter, it supports ...
Read MoreHow to Install Windows Features with PowerShell?
To install windows features on the server, Install-WindowsFeature cmdlet is used .Install-WindowsFeature Windows-Server-Backup -LogPath C:\Temp\Installfeatures.txt -VerboseIn the above example, Windows-Server-Backup feature will be installed on the local server and logs will be stored at location C:\Temp and file name InstallFeatures.txt.PS C:\Users\Administrator> Install-WindowsFeature Windows-Server-Backup -LogPath C:\Temp\Installfeatures.txt -Verbose VERBOSE: Installation started... VERBOSE: Continue with installation? VERBOSE: Prerequisite processing started... VERBOSE: Prerequisite processing succeeded. Success Restart Needed Exit Code Feature Result ------- -------------- --------- -------------- True No Success {Windows Server Backup} VERBOSE: Installation succeeded.You can also install the feature with the pipeline command, Get-WindowsFeature Windows-server-backup | Install-WindowsFeature -LogPath C:\Temp\Installfeatures.txt -VerboseIf your windows feature ...
Read MoreHow to repeat a simulation to a fixed number of times in R?
Often, we simulate random values from different distributions in R. The base R provides some inbuilt functions for the same and if we want to repeat the simulation a fixed number of times then we write these inbuilt functions again and again. But we can do multiple simulations using a single line of code with the help of replicate function, that means if we want to simulate ten uniform random variables ten times then it can be done by using replicate function.Examplesreplicate(10, runif(5, 2, 5)) [, 1] [, 2] [, 3] [, 4] [, 5] [, 6] [, 7] [, ...
Read MoreHow to create a column in an R data frame with cumulative sum?
The cumulative sum is used to determine the total sum of a variable or group and helps us to understand the changes in the values of that variable or group over time. While creating the cumulative, we must be sure that the total sum and the cumulative sum of the last value (depending on the direction of sum) are same. We can use mutate function of dplyr package to find the cumulative and create a column for it.ExampleConsider the below data frame −x1
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