What is API testing and how to do it?

What is API testing and how to do it?

What is API testing and how to do it? The concept of API’s pre-dates even the advent of personal computing and Web, it’s been around since the 1960s. Without APIs, the digital experiences that we experience every day wouldn’t be possible. API’s...

What is API testing and how to do it? The concept of API’s pre-dates even the advent of personal computing and Web, it’s been around since the 1960s. Without APIs, the digital experiences that we experience every day wouldn’t be possible. API’s are responsible for everything from driving information-rich marketing campaigns to checking the weather on a mobile app. These API’s are tested before they are put to use and we call the process ‘API Testing’. In this article, we will explore ‘What is API Testing?’ in detail. If you are new to software testing, be sure to also read the Beginners’ Guide for Software Testing. This is image title Let’s take a look at topics covered in this article: What is an API? What is API Testing? Why should we do API Testing? How to Perform API Testing? Types of API Testing List of Popular API Testing Tools Challenges of API Testing What is an API? API is the acronym for Application Programming Interface, which is a software intermediary that allows two applications to talk to each other. Suppose you’re looking for a bedroom through an internet travel booking website. mistreatment the site’s on-line type, you may fill the mandatory info just like the town you wish to remain in, arrival and check-out dates, variety of guests, and variety of rooms. Then you click “search.”. however what’s occurring between coming into your info to receiving your edifice choices? Apis, that’s what! the location aggregates info from many various hotels. once you click “search,” the location then interacts with every hotel’s API, that delivers results for obtainable rooms that meet your criteria. and every one this happens in seconds attributable to associate API, that acts sort of a courier that runs back and forth between applications, databases, and devices. But, if associate API doesn’t work expeditiously and effectively, it’ll ne’er be adopted, regardless if it’s free or not. To avoid that, API’s area unit tested before they’re place to use. What is API Testing? API testing could be a form of code testing wherever application programming interfaces (APIs) area unit tested to work out if they meet expectations for practicality, reasonableness, performance, and security.

In straightforward terms, API testing is meant to reveal bugs, inconsistencies or deviations from the expected behavior of associate API. Commonly, applications have 3 separate layers: • Presentation Layer or interface • Business Layer or application interface for business logic process • Database Layer for modeling and manipulating knowledge API testing is performed at the foremost vital layer of code design, the Business Layer. it’s within the business layer, business logic process is applied, and every one transactions between User Interface(UI) and info happen. So, ensuring that, API offers complete supposed practicality permits for simple future growth of the wares. a lot of reasons on why API testing is vital area unit mentioned next during this ‘What is API Testing?’ article. Why ought to we tend to do API Testing? API testing is a very important activity that testing groups ought to specialise in. It offers variety of benefits over different kinds of testing

Get more info at Selenium online training and selenium Certification coaching Language Independent: knowledge is changed via XML and JSON, thus any language may be used for automation, freelance from the languages wont to develop the appliance. GUI Independent: API testing may be done to see the core practicality of the appliance to reveal little errors and to judge a build’s strength. Also, we will take a look at the Apis while not a interface. Improved take a look at Coverage: Most API’s have options, that permit a take a look ater to make machine-controlled testswith high test coverage as well as positive and negative cases. we will seldom notice take a look at cases that can’t be machine-controlled.

• ctor-led Sessions • Real-life Case Studies • Assignments • Lifetime Access Explore info Reduce Testing Cost: With API testing we will notice minor bugs before the interface testing. Usually, these minor bugs can become larger throughout interface testing. thus finding those bugs whereas activity API testing are going to be value effective. Enables quicker Releases: The take a look at cases that take regarding 8–10 hrs once corporal punishment UI regression testing take solely regarding 1–2 hrs with API testing. this permits firms to unharness builds quicker with API testing. So, API testing could be a extremely vital section of the testing method. however however is API testing carried out? Is there a particular procedure? How to Perform API Testing? Listed below square measure the steps that you simply will follow to perform API testing:

API Specification Review The first step is documenting the API testing needs. what’s the aim of the API? what’s the work flow of the application? that integrations square measure supported by the API? What square measure the options of the API? Documenting of these API testing needs is that the very first thing you would like to try and do. this can assist you in designing API tests throughout the testing method. Setting Up check setting Next step is putting in a testing setting, with the specified set of parameters round the API. This involves configuring the info and server for the appliance needs. Integrating Application knowledge In this step, you would like to mix your application knowledge with the API tests to make sure that the API functions evidently against all potential input configurations. Deciding sort of API check After you’ve created the testing boundaries and needs, you would like to choose what you would like to check your API for. There square measure differing types of API tests like practicality testing, validation testing, load testing, security testing, end-to-end testing, fuzz testing and lots of additional. additional concerning API testing varieties within the next session of this text. Software Testing coaching Text Execution & news Once you have got selected what to check the API for, consequent step clearly is to make check cases around that needs and execute them. A basic guideline is to spot the foremost common parameters associate degreed conditions that an finish developer can use once vocation the Apis and check these situations extensively. so document the check results for any use. Well, you’ll follow the higher than steps to with success check Apis. one in every of the vital steps whereas activity API checks is to choose what quite test you would like to perform. For that, you must bear in mind of the kinds of API testing. Let’s check them out next during this ‘What is API Testing’ article. Types of API Testing In API testing, the subsequent styles of testing is conducted: • Functionality Testing — to examine if the API works and will specifically what it’s alleged to do • Reliability Testing — to examine if API is systematically connected to and result in consistent results • Validation Testing — Helps verify the aspects of product, behavior, associate degreed potency of an API • Load Testing — Is performed to make sure the performance of API underneath each traditional and at peak conditions • UI Testing — It involves testing the programme for the API and different integral elements • Security Testing — to check that the API is secure against all potential external threats • Penetration Testing — To observe vulnerabilities of associate degree application from associate degree attackers perspective • Fuzz Testing — to check the API in terms of the boundaries to arrange for the “worst case scenarios” Well, these square measure the foremost oft performed API check varieties. By activity these tests what square measure you attempting to check for? what’s going to you find? You are checking for: • Duplicate or missing practicality • Improper electronic communication • Error handling mechanism is incompatible • Multi-threaded problems • Security, performance & security problems • Reliability problems Since API Testing is gaining quality, we’ve got several tools accessible for an equivalent. This ‘What is API Testing?’ article lists some common API testing tools for your reference. API Testing Tools For with success activity API testing, you may would like a tool to structure and manage your check cases. Here square measure a number of the highest API testing tools that may be used for Rest API and Soap API: SoapUI: it’s the foremost wide common ASCII text file tool for API testing. With SopaUI you’ll perform useful testing, performance testing, security testing, and data-driven testing. it’ll give you with the reports for testing and can permit you to export the info. Postman: With over four million users worldwide it’s one in every of the foremost common API testing tools. It runs on mack, Windows, UNIX system & Chrome Apps. permits you to line up all the headers and cookies your API expects, so check the response. Katalon Studio: it’s a strong and comprehensive automation tool for API, Web, and mobile testing. Provides straightforward preparation by as well as all frameworks, ALM integrations, and plugins in one package. Also, supports each SOAP and REST requests,also supports numerous styles of commands and parameterization functionalities. Tricentis Tosca: it’s a model based mostly check API automation testing tool from Tricentis however conjointly supports API testing. It supports a large array of protocols as well as HTTP(s) JMS, SOAP, REST, IBM MQ, NET TCP, etc. REST-assured: it’s associate degree ASCII text file Java Domain-specific language (DSL) tool that creates testing REST service straightforward. Supports XML and JSON requests. This tool simplifies things by eliminating the necessity to use boiler-plate code to check and validate complicated responses. Apart from these common tools, there are tools like Apache JMeter, HttpMaster, Parasoft, HP QTP, Karate DSL, and lots of others. although these tools create API testing straightforward, you would possibly still bump into some challenges whereas activity API testing. Challenges of API Testing • There isn’t any GUI, which is able to create it troublesome for testers to administer input values • Test case management is troublesome since a checker may need to affect countless test cases • The tester should possess experience within the programming language(s) that square measure targeted by the API • Time-consuming, needs tons of your time and resources to develop tools and style tests • Improper documentation can create it troublesome for a check designer to know the aim of API calls • Proper decision sequencing is needed as this might result in inadequate coverage in testing • Exception handling functions ought to be tested completely If you found this “What is API Testing?” article relevant, check out the live-online Selenium online training Hyderabad by onlineitgru, a trusted online learning company with a network of more than 250,000 satisfied learners spread across the globe. Got a question for us? Please mention it in the comments section of this ‘What is API Testing?” article and we will get back to you.

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