Automated Smoke Testing PhantomJS vs Selenium Smoke testing is a superficial level of testing conducted by developers to make sure that all the functions of an application work They do not go into the finer details of the app focusing rather on the major functionalities The developers perform smoke testing on the build before and after they give it to the testing team The term smoke test was initially coined after the hardware tests that engineers did to check if their system worked ie there was no fire or smoke when the initial switch was activated In smoke testing of an app all areas of the application will be tested but without going into the more nittygritty details Smoke Testing to Check if there is Fire and Smoke Smoke testing is also known as build acceptance testing or BAT It is a critical aspect of Quality Assurance and delivers decisive answers on whether to accept the build or reject it Therefore a build in software indicates that a particular model is still in its testing stage All the critical functionalities would be put to test here Once the build clears the first state it will be taken for further QA tests and if the build fails the test it would be rejected and the QA team would revert it back to a previously accepted version or reject it completely Normally a smoke test is performed before any critical functional tests are executed on the software built A simple example of a smoke test would look like this You design a simple project where you have modules like login view user user detail page task creation and new user creation Each one of these five modules is tested to check whether it is working well and to verify that there is a smooth transition from one module to the other There is another term known as sanity testing that is often misunderstood for smoke testing Sanity testing is done on a software build after it has gone through the smoke testing stage and changes to the build have been made This testing is done to ensure that the bugs are fixed and there are no persisting problems What is the Importance of a Smoke Test Testing your web applications to ensure quality is important Conducting the smoke test is even more important as it answers basic questions such as Does the program run Is the logging process smooth What happens when you click the main button etcA major benefit of running a smoke test is that it provides quick feedback within a matter of few minutes and testers dont have to wait hours to get results Integration Testing Integration testing is a process in which the different software modules in the computer are merged and tested as a group For example if your task is to test the keyboard of the computer the process is called unit testing but when you have to test the keyboard and the mouse it is known as integration testing In the same way when all the components of the app are joined together integration testing is performed by the developer the tester or by both of them There are different types of integration testing Topdown testing where the testing starts right at the beginning and follows down the hierarchy Bottomup testing hierarchy where the testing starts right at the bottom of the program and works its way up Bigbang testing approach where all the components are linked together and simultaneously tested its done when all the modules are ready Sandwiched testing approach a hybrid testing approach combining topdown and bottomup approaches There is a basic difference between smoke testing and integration testing Smoke testing is all about concentrating on the main components of the program If there is a problem with any component then the testing would be halted In integration testing the test is done with different components to see how they work with one another It is a chain so only when one component works normally the other component will also be able to start working Take the same keyboard example for instance if your keyboard is working fine but there is a problem with the monitor you will not be able to see the end result It is important to ensure that all the components work in accordance with each other What is a Headless Browser How is it Different from a Real Browser Performance monitoring is conducted to detect problems with the performance and functionality of apps so they dont impact end users One way to do this is through synthetic testing In synthetic testing you can simulate real users by loading all the critical pages like logging in performing simple duties and checking out This kind of synthetic testing mimics real usage so you can gauge the typical behavior of the users Synthetic testing comes in two different formats Headless Browsers a variation of browser simulation and Real Browsers Browser simulation takes place when the user requests an HTML page parsing out and requesting resources like images JavaScript CSS and so on However it does not actually involve JS engine so all the additional requests that normally accompany it will be ignored The headless browser is a variation of browser emulation They are browsers meant for automated testing and come with the regular GUI or Graphical User Interface Not having a GUI calls for certain benefits like quick execution of scripted automation it is less resource intensive and lightweight Real browsers are the browsers everyone is familiar with Chrome Safari Firefox Opera Internet Explorer and the like are all known as real browsers They are equipped with GUI and several other features that would lead to a wonderful browsing experience It is these features that make the real browsers more resource intensive but heavy and thus slow when executing automated commands But they have something in common with headless browsers You can change the useragent string when you are working with real browsers too making it possible to imitate other browsers when competing with servers The Advantage Headless Browsers have over Real Browsers The main advantage that headless browsers have over real browsers is that the former is much faster Real browsers take time to open because there is rendering of HTML CSS images and JS while headless browsers have no such issue Headless browsers start working immediately as there is no time wastage over page loading Automated smoke tests are conducted with the help of headless browsers There are several headless browsers for JavaScript testing frameworks out of which we will be discussing PhantomJS and Selenium in detail PhantomJS This is an incredibly powerful tool for testing as it supports several web standards This makes it a suitable option for automation and integration with CI tools PhantomJS gives you the advantage of capturing screenshots so you can overrule the useragent string header to the concerned server and imitate the next browser Being a headless version of WebKit it works as a windowless command line browser Heres a simple JavaScript example consolelogLoading a web page var page requirewebpagecreate var url httpphantomjsorg pageopenurl function status Page is loaded phantomexit Credits httpphantomjsorg That PhantomJS works as a single version of WebKit maybe a disadvantage of the framework But the good news is that it performs as a selfcontained command line application The reason why developers are very keen on using PhantomJS is that it doesnt need many resources and absolutely no third party devices or external services A downside to that is that you can not use PhantomJS for extensive web app testing PhantomJS is perfect for smoke testing web apps The reason why developers like to use PhantomJS is that it blends smoothly into the development workflow PhantomJS is suitable for networking monitoring thereby analyzing the inspection of network traffic You can hook PhantomJS during a requestresponse cycle to collect data about a particular website It is possible to format the data to analyze the performance of a webpage PhantomJS is an important tool for unit testingp PhantomJS is also used for automatic web performance test It can run a lot of tests and these would be shown on the command line Advantages of PhantomJS at a Glance Development is very easy with PhantomJS you can write the code by selecting the HTML element while developing the UI CasperJS a navigation scripting and testing utility for PhantomJS is used making it easier for developers and testers With PhantomJS tests are done in 13rd of the time Testers who need to do manual testing find it easier with PhantomJS Works on all major operating systems like Windows Mac OS X Linux and so on Its completely headless on Linux also runs on Ironio Heroku and Amazon EC2 Jenkins and YSlow makes it possible to automate performance analysis Monitor page loading and export as all standard HAR files It is natural to think that a web browser without a graphical interface is useless but as PhantomJS provides Javascript API it becomes useful This is how the phrase WebKit scriptable came in To install PhantomJS visit the official website and get the binary suitable for your requirement Selenium Selenium is an open source automation tool and a JavaScript run automated testing framework that enables you to run tests across different browsers The most commonly used browsers are Chrome Firefox Safari and Internet Explorer Developers choose Selenium when they need a specific JavaScript engine As Selenium is integrated with the support of a number of leading web browsers it is considered as the main technology for automation tools frameworks and a huge number of APIsAlso you need a corresponding driver when you are using a specific browser with Selenium During the test run Selenium will launch the corresponding browser known as in script and goes through each of the stages in the test You can download Selenium Server which is distributed as a single jar file that looks like this java jar seleniumserverstandalone2280jar Once you execute this command a server where the testing code will be connected will immediately be booted up You need to run Selenium Server to run the tests There are two versions of Selenium known as Selenium IDE and Selenium WebDriver Check them out Selenium IDE Integrated Development Environment Integrated with complete Selenium Core it allows developers to easily and quickly record and playback tests in the actual environment that they will be working in However it is implemented as Firefox extension enabling you to record edit and debug tests Selenium IDE is not a mere recording tool it is the entire IDE making it easier for you to have the perfect environment for running tests Selenium IDE should ideally be used only as a prototyping tool and would not be suitable for creating and maintaining complex test suites In order to make complete use of Selenium IDE you need to have a little bit of programming knowledge and must be familiar with JavaScript DOM and HTML Selenium WebDriver With the inclusion of WebDriver API you have a new version of Selenium known as Selenium WebDriver It makes direct calls to the browser by using the browsers native support for automation Hence it is a good choice for browserbased automation tests Selenium Server featured with builtin grip capabilities is integrated within Selenium WebDriver The best way to choose Selenium tool would be for scaling and distributing scripts across different browser environments WebDriver being a webbased testing tool was meant to cover all the limitations of Selenium IDE Direct calls are made to the web browser and the test script would be executed in this style Browser supports and capabilities are used with WebDrivers Selenium ensures that tests are closer to reality because it allows for automated control of real browsers on real operating systems The framework is capable of running on various browsers and operating systems But when you are working with a single machine you can not run more than a few browsers Selenium bindings control PhantomJS making it possible for testing 90 of the requirements PhantomJS or Selenium Which One to Select Selenium does have a downside when compared to PhantomJS It needs a userfriendly graphical desktop for running the tests making the process slow However you can leverage the full potential of Selenium when you set up virtual machines for various operating systems and connect them all together What developers love about Selenium is its capability to use bindings that would allow them to use common programming languages like Java the native language of Selenium JavaScript Python Ruby and C PhantomJS running on WebKit engine is a much smaller project but without the graphical portion and hence faster and easier to set up The advantage PhantomJS has is that if the application runs on WebKit then it will definitely run on all the browsers With PhantomJS bindings to Selenium it is possible for Selenium to control PhantomJS eliminating the need for any complicated set up It allows you to cover 90 of the testing requirements and when you need to do a more powerful testing you can add extra browser connections to Selenium without changing any of the codes The differences between PhantomJS and Selenium are probably obvious to you by now But it is ultimately the developer or tester who decides which one to go for The Final Points We can safely conclude that PhantomJS and Selenium are two of the best JavaScript testing tools presently used by developers As both are perfect in their roles understanding their unique capabilities would help you decide which one to choose If your intention is to run multiple tests within a short period of time then using PhantomJS would be a feasible option because with Selenium it could be a timeconsuming process Another advantage with PhantomJS is that as it is backed by commandline based usage the JS code of the website is sandboxed and not left on the screen Therefore it doesnt interact with the principal tool On the other hand PhantomJS wouldnt be a good choice for web app testers as it serves as a single version of WebKit Thus if you prefer to use headless browsers for testing you can choose either PhantomJS or Selenium depending on your requirements There is no superior framework as such it depends on the user You can ensure the quality of your app with the help of an independent testing team Our expert test engineers are ready to help you Contact Us Today SHARE THIS BLOG ON

O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I I I I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I O O O O O O O O O O O O O O B I O O O O O O O O O O O O O O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O

integration testing
importance
build acceptance testing or bat


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