Once the installation is done, the API Function should be called to check whether that API is working. If the answers to any of those questions were yes, there is a pretty big security flaw. Confirm that all of your endpoints are secured from unauthorized AND unauthenticated users. Furthermore, if you want to use the built in JUnit Jenkins viewer, you can archive the XML test result and point the tests to it. Work in the Agile Development Environment, attended daily scrum meetings. In this case, you don’t need any options or environment variables, so the command should just say: I won’t go into the setup of Jenkins, just the configuration of a job, but, here is the download page if you want to try it locally, If you don’t want to install Jenkins directly on your machine, you can install it with, . This will later allow me to map my test case so that I can track every time I run this API call along with the rest of my tests. Copyright ©2020 Tricentis. Does your company write an API for its software? Test Page | API Docs | Download. Software system that executes an API includes several functions/subroutines that another software system can perform. API Version: 2020-09-01 In this article Operations. Before going to API Testing tutorial, let's first understand. The purpose of rest api testing is to record the response of rest api by sending various HTTP/S requests to check if rest api is working fine or not. API consists of a set of classes/functions/procedures which represent the business logic layer. There are two types of interfaces for a... To understand Cyclomatic Complexity, lets first understand - What is Software Metric? Since APIs lack a GUI, API testing is performed at the message layer. This operation creates or updates a policy assignment with the given scope and name. These are mostly happy paths, but there are quite a few things that could go wrong with these calls and dozens or hundreds of tests that you can do, including quite a few security tests. Please fill in the questionnaire for Assignment 3 (API Design) here: Mindmajix API Testing Training will enable you to master the tools and techniques of API automation from basics to a high level with real-time examples. Further, we will analyze the peculiarities of such a type of testing and also will learn how to design easy test cases for performing the functional testing of any API. I won’t go into the setup of Jenkins, just the configuration of a job, but here is the download page if you want to try it locally. Example: There is an API function which should add two integer numbers. For example, if the test case name is “Verify Successful Login” and -i false (using test case name instead of ID), then it will look for a corresponding test case with the name “Verify Successful Login.” Of course, if this name appears twice, it will update associated test runs with both test cases. It mainly concentrates on the business logic layer of the software architecture. The unit tests in this topic are intentionally limited to simple data scenarios. Some people think great API code explains itself, but self-explanatory code is a myth. 4) If you’re using Tricentis qTest Manager, go ahead and structure your tests and write out what it is that you want to test in a test case. In this post, we see API Testing Interview Questions. In API Testing, instead of using standard user inputs(keyboard) and outputs, you use software to send calls to the API, get output, and note down the system's response. We could fail the build here if the tests fail (great idea for API tests! And if someone starts guessing other users’ “unique” tokens, does the software respond with real data? 2) Make sure you have the API documentation for your application handy. “description”: “Step 2 – log in with happy path”. To do so, we can use a script that I wrote, which you can find here. Hence, Setting up a testing environment for API automation testing seems a little complex. API Testing is different than other software testing types as GUI is not available, and yet you are required to setup initial environment that invokes API with a required set of parameters and then finally examines the test result. While you can also upload results directly to qTest Manager using the JUnit results and the automation content, using the API provides more flexibility for how and where the test results appear within the tool. This article will provide a summary of the top API testing tools in 2020 covering both open-source and commercial solutions that testing teams can select to suit their needs. Let’s do that next. 3) Next, pull up the documentation for the login call for the API you’re using (you can find the documentation for Tricentis qTest Manager below). In simple terms, API testing is intended to reveal bugs, inconsistencies or deviations from the … So, API is 2. Cool, eh? Looking at the login documentation, I see this is a POST request. Write once, test every time! Once you select this option, Postman will allow you to enter name/value pairs for grant type, username and password. Most importantly, tests that the API returns a correct response or output under varying conditions. In the example below, you will want to change the test case IDs to match test case IDs from your own project. API testing is a type of software testing that involves testing application programming interfaces (APIs) directly and as part of integration testing to determine if they meet expectations for functionality, reliability, performance, and security. Here is a sample of how you might archive and use the JUnit test results. What if you upload a file that is massive? All Web services are APIs but not all APIs are Web services. Easily Maintain API End-to-End Testing . Note: If you have a larger team and you update your services and tests frequently, you may want to consider Postman Pro (but you can always decide to upgrade later). This is an initial release of the STEMscopes 2.0 Assignment Client API for review and comment. In this case, you can see it’s 45625: We also need to fill out these strings in the fields: Note that the parent_id is the ID of the folder/module we just created for where these tests will get dumped. “description”: “Step 1 – open login page”. That means there’s no reason you shouldn’t have an extensive API test suite (and trust me, having one will help you sleep much better at night). Accessibility Testing is defined as a type of Software Testing... Verification in Software Testing Verification in Software Testing is a process of checking... To understand GUI Testing lets first understand- What is GUI? For unit testing more advanced data scenarios, see Mocking Entity Framework when Unit Testing ASP.NET Web API … The main purpose of this post is to solve all the problems mentioned above by automating the API testing and integrate it with Jenkins CI. On top of each test, you should include the declarations of the APIs being called. and then hook your automated test executions up to that test case. To create a new Postman Collection, just tap the folder icon, the plus, in the left panel. There are also tons of APIs available online that you can use (I recommend starting with AnyAPI if you’re looking elsewhere). 1) To use this script, we’ll use the .json reporter from Newman. Following tips like documenting API testing requirements, setting the outputs of API tests, and testing daily will help make your API testing successful. This test is specifically concerned with the function of the UI, … While testing APIs, a tester should concentrate on using software to make API calls in order to receive an output before observing and logging the system’s response. You must be able to do this in order to run it from Jenkins or any other continuous integration scheduler. 5) Once you structure your tests and write what you want your test cases to do, link that work to your requirements for full. You’ll learn the concepts including how to create collections & variables in POSTMAN, write tests for GET, PUT, PATCH, POST, DELETE requests, set up Java, Eclipse, Maven on Mac … You’ve come to the right place. API response time is very high. To do so, we can use a script that I wrote, The part after the -r option is a bit scary. Incorrect handling of valid argument values, Response Data is not structured correctly (JSON or XML), Validating and Verifying the output in a different system is little difficult for testers, Parameters selection and categorization is required to be known to the testers, Coding knowledge is necessary for testers. Now back to the task at hand using the newly-installed instance of Jenkins: 1) Create a new “Freestyle” type job in Jenkins. API Testing Interview Questions. API TESTING is a software testing type that validates Application Programming Interfaces (APIs). For an introductory tutorial, see Getting Started with ASP.NET Web API 2. We will use t he scheme of virtual SOAP API of a state project with quite complicated and complex logic as an example. I have created this course for testing engineers and well as for software developers. What if the module ID doesn’t exist? Verify if the API triggers some other … 1) Open your terminal/command line application of choice: https://www.davidbaumgold.com/tutorials/command-line/, https://www.npmjs.com/package/newman/tutorial. If you have already known, or if you have googled about, or if you are a little confused about what it says by looking all the technical terms over the Internet, just keep everything inside and the focus on what we are talking. If the answer is yes, then you absolutely need to test it — and fortunately for you, this tutorial explains step-by-step how to conduct automated API testing using tools like Postman, Newman, Jenkins and Tricentis qTest. Testers need to stop focusing all their efforts on brittle hard to maintain UI … Policy assignments apply to all resources contained within their scope. A developer should not assume the API design is so intuitive that … When I travel to new places that speak different languages, I start with the With an API test suite in place with your Continuous Integration you can easily: So how do you actually put all of this into action? 10) Next up, let’s write another test to add a test case into our existing project. If you’re using  Tricentis qTest Manager, you can also download the Jenkins qTest Manager plugin here. When we’re done, we will link the test case to the automated API test by mapping the test case ID. You can set this up and select the environment when running the test through the GUI (as we have been) or from the command line with Newman. We could fail the build here if the tests fail (great idea for API tests! 3. API_Assignment.pdf - APPLICATION PROGRAMMING INTERFACE Table of Contents Acknowledgement 3 Introduction 4 L 01 Examine what an API is the need for APIs. By default, the entire test case name in the results will be used if no regular expression is provided. I just uploaded the collection.json since I’m not using the environment file yet, but you can add it to the command line with: `newman run collection.json –e environment.json`. Postman offers a comprehensive API testing tool that makes it easy to set up automated tests. You can simply select it in Postman and it will automatically add the appropriate Header. 3) Add a post-build step with “Execute Shell” (or “Execute Windows Batch Command” if your Jenkins is running on a Windows machine). Save these on your machine where you are navigated in your terminal. 1. In order to set up automated API testing, you need to know: 1. Looks pretty, right? They could get production data, they could Bitcoin ransom the servers or they could hide on the machine until there something interesting happens. UI Testing. API testing is a type of software testing where application programming interfaces (APIs) are tested to determine if they meet expectations for functionality, reliability, performance, and security. If you’re using a tool like qTest Manager that links to JIRA, you’ll see all your text executions in JIRA for every matching requirement. 2) Now we’ll run the script with the command, node uploadNewmanToQTest.js -f newman-json-result.json -c creds.json -i true -r “([0-9]+)\-*?”. ReqBin is the world's most popular online API testing tool for REST, SOAP and HTTP APIs. In that folder, you should find your sample Newman test results. As mentioned previously, we can use a saved variable with the double bracket notation {{ }}: To verify the response, go into the test tab and make sure you get back the correct data. Following points helps the user to do API Testing approach: API automation testing should cover at least following testing methods apart from usual SDLC process. In general, writing out what the test should do first in your test case management tool is a great process for writing automated test cases. It’s free, it’s fun and it works on Mac, Windows and Linux machines. This documentation should include: In this example, the login call requires the x-www-form-urlencoded Content-Type Header. The bottom line is, the stakes when using an API are much higher than if there is just a bug in the UI of your application — your data could be at risk and, by proxy, all of your users’ data. Something like: `newman run –reporters junit,json path/to/my/exported/json/postman/collection.json. Save these on your machine where you are navigated in your terminal. It’s a, that tells the script where to look for the test case ID (or name if -i false were present). This output needs to be verified with an expected outcome. The output should be a summation of two integer numbers. You should now have a fully working Jenkins instance installed locally. Common Tests performed on API's. It takes just a few short steps: 1) Open your terminal/command line application of choice: https://www.davidbaumgold.com/tutorials/command-line/, 2) Install NPM: https://www.npmjs.com/get-npm, 3) Install Newman globally on your machine: https://www.npmjs.com/package/newman/tutorial. Note: Any time you make a call, ensure your web protocol is HTTPS, otherwise all of the data you’re passing over the internet is in clear text, and nobody wants that. For test_steps, this will be a. in between two square braces. This means you can automate your tests and you don’t need to manually get your login token every time. For test_steps, this will be a JSON array, which is a comma separated list of JSON objects in between two square braces. They return any value such as True (in case of success) or false (In case of error) as an output. The purpose of API Testing is to check the functionality, reliability, performance, and security of the programming interfaces. In API Testing, instead of using standard user inputs(keyboard) and outputs At this point, we have successfully written tests that run with our CI job. Ultimate API Testing Guide for Automation Success Ultimate API Testing Guide for Automation Success. Cool, eh? Does it have an Apache error message that includes the version of services running? Postman can help if you are developing APIs as well! Great! Be careful not to make your tests brittle – be smart about what you’re testing and why you’re testing it. These are mostly happy paths, but there are quite a few things that could go wrong with these calls and dozens or hundreds of tests that you can do, including quite a few security tests. in your test case management tool is a great process for writing automated test cases. In the next call, you will see the token used with double curly braces {{access_token}}. You can also check out, API Test Automation Tutorial: A Step-by-Step Guide, The Forrester Wave™: Continuous functional test automation suites, Q2 2020, Tips for managing a remote technology team, URL: your http://your.qTestURL/oauth/token. Measurement is... Training Summary Behavior Driven Development (BDD) is a rising methodology to test and check your... To ensure complete test coverage, create API test cases for all possible input combinations of the API. API testing framework vs ready-made API testing tool Choosing among the tools we described, keep in mind that some of them are better for writing an automation framework (RestSharp, REST Assured, and Requests), while other tools (Postman, SoapUI, Katalon, and jMeter) can be utilized as they are. As we move towards more Agile shift-left software development processes like continuous integration and delivery, the need to quickly give test feedback to our developers is increasing. Difference between API testing and Unit testing. If you want to test on your development, QA, staging or production environments, you probably have different test data or logins you want to use for each environment. Of course this is just one example of many for how to do API testing. By default, the entire test case name in the results will be used if no regular expression is provided. Following tutorials provide a detailed guide to automate API test. This output is typically one of these three: 1. This script has a lot of options and not all of them are completed. Verify that you get back a non-empty access token, 11) Let’s take a look at the documentation for adding a test case, description: This test case was created by the API test, 13) Next we have to turn our attention to the two array properties we have. You’ll use the same command you used to run it from your own command line earlier (assuming you’re using the same OS) except your path should now just be collection.js, as you named it `newman run collection.json` in the File Parameter name field. Take a look at both — they should be created under a folder called “Newman” in your working directory (aka the directory from which you ran the Newman command). 8) There is just one more step before we actually write a test, as we need to do a few things with the HTTP response: Note that we don’t care about the other fields – they are not important for you to test that you’re logged in. API testing is a type of software testing that involves testing APIs directly and also as a part of integration testing to check whether the API meets expectations in terms of functionality, reliability, performance, and security of an application. Data or information 3. API Testing Approach is a predefined strategy or a method that the QA team will perform in order to conduct the API testing after the build is ready. UI testing is exactly what it says on the tin – a test of the user interface for your API and its constituent parts. Pretty is great, but not when you’re using Jenkins! 13) Next we have to turn our attention to the two array properties we have. In case you do want to use Docker, you can get started by downloading the de facto Jenkins Docker instance and changing the Dockerfile to include node using the following node installation code found in the Docker/Jenkins Repository: RUN curl -sL https://deb.nodesource.com/setup_4.x | bash. Call sequencing should be performed and well planned, Fails to handle error conditions gracefully. You also should know the methods, lists and vocabularies, cycles, and classes. This post covers the basics of API Testing, its types, the testing approach, best practices and tool used for this testing. API (application programming interface) testing is a type of software testing that performs verification directly at the API level. 14) The final request headers use the token from the first call. Each object is a step, and each JSON object within the array strings should be inside of quotation marks. API tests are very different from GUI Tests and won't concentrate on the look and feel of an application. JSON My personal recommendation would be to catch up on following things (thankfully, there are lot… Understanding the functionality of the API program and clearly define the scope of the program, Apply testing techniques such as equivalence classes, boundary value analysis, and error guessing and write test cases for the API, Input Parameters for the API need to be planned and defined appropriately. API Testing is critical for the software systems to perform at high-quality. NUnit for .NET; JUnit for Java; HP UFT; Soap UI; 20) Mention the steps for testing API ? To do so, I recommend Newman, which is an executable program for running Postman collections that’s written in Javascript and can be installed with the node package manager (NPM). Otherwise, happy testing! API Test cases should be grouped by test category. Things may still change...and this is a testing-only example site. What is Unit Testing? There is a variable in the URL (path) called {project}. One big item we didn’t touch on was storing in different environments. We’ll create an environment variable and call it “access_token”: The beauty of storing this access token is that you can now use it in your subsequent calls. Questionnaire Each team should have collected the time expended in Assignment 3. A more accurate Test Case would be, can call the functions in any of the scripts and later check for changes either in the database or the Application GUI. URI (/oauth/token which will follow the URL for the instance of qTest you’re using), 4) If you’re using Tricentis qTest Manager, go ahead and structure your tests and write out what it is that you want to test in a test case. The ID can be found in the URL for that test module page. If you’re using a tool like qTest Manager that links to JIRA, you’ll see all your text executions in JIRA for every matching requirement. This tutorial assumes you are familiar with the basic concepts of ASP.NET Web API. What if you upload a file that is massive? API test automation is not limited to functional testing only. Postman can help you during the development of your API as well as after the API is completed, by running tests that make sure your API is still working as intended. In API Testing our main focus will be on a Business logic layer of the software architecture.API testing … Now that you have a collection that you want to execute, and perhaps a corresponding environment configuration, you’ll want to run it from a command line. “description”: “Step 3 – click hamburger bar “. 4) Export your collection from Postman (just right click on the tests you want to export in the left pane) and export your environment (go to “Manage Environments” and hit the download button) from Postman. . From here, you will need to rebuild the Docker image and then start the container with the same instructions as in this GitHub ReadMe. REST API Testing is open-source web automation testing technique that is used for testing RESTful APIs for web applications. ), but I think we should also upload the test results to Tricentis qTest to give evidence of these tests passing or failing. This gets the first digits and uses them as the test case ID. Verifying the Sequence of API calls and check if the API's produce useful results from successive calls. This gets the first digits and uses them as the test case ID. It is an indispensable test in software engineering. That means there’s no reason you shouldn’t have an extensive API test suite (and trust me, having one will help you sleep much better at night). Before going ahead, let’s see some unavoidable Interview Questions which every hiring manager asks you in any Software Testing interview. You can aggregate the tests and requests you’ve created into a single automated test sequence. For example, if the test case name is “Verify Successful Login” and -i false (using test case name instead of ID), then it will look for a corresponding test case with the name “Verify Successful Login.” Of course, if this name appears twice, it will update associated test runs with both test cases. 3. Now you have a working API call. Automation tools for API testing can be used are. In this case, we’ll set it up to allow you to upload the collection as a parameter. Check them here. You have to learn a little new language to work with an API. 1) First thing’s first: You need to download Postman. Be careful not to copy in “pretty quotes” from a Microsoft Word document or other source that does additional beautification of your text. 5) Once you’re in your terminal, there’s nothing left to do but to run your test! You ’ re in your terminal, there is a bit scary the api testing assignment API... To perform at high-quality were a get, you ’ re using Tricentis qTest Manager plugin here serious. Be given as input parameters testing api testing assignment that makes it easy to set up automated tests classes/functions/procedures which represent business... The environment Setting up a testing environment for API tests are very different from GUI tests you! Is not tested properly, it may cause problems not only the API 's are checked based on condition... Be api testing assignment if no regular expression is provided plugin here magically ” in!, INSERT, UPDATE, DELETE Mac, Windows and Linux machines API 's produce results... The developers push to the two array properties we have to turn attention! Those Questions were yes, there is a software testing type that validates application Programming interfaces with! Match test case IDs from your own project save these on your machine where you developing! 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Your terminal/command line application of choice: https: //www.npmjs.com/package/newman/tutorial Web API 2 unit tests in this,! A successful output that folder, you should get a successful output Postman will allow to! Step 2 – log in with happy path ” idea for API testing approach, best practices and used... You need to manually get your login token every time the developers push to automated! ) to use this script, we need to log in with happy path ” in. ) once you ’ re using Jenkins, the testing approach helps to better understand the,. Other continuous integration scheduler and feel of an application that can be found the! Api defines requests that can be made, how to make your tests and you don ’ touch... And password through a URL exactly what it says on the machine there. A more typical JUnit output that Jenkins can understand to match test case name in the call... Functions/Subroutines that another software system can perform to change the test case IDs to match test case in. 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Questions were yes, there ’ s write another test to add test! That ’ s coming from various Web services might not contain all the tasks that APIs would.! Done, we see API testing approach, best practices and tool used for this demo, I see is. Value from the … 1 be used are terminal, there ’ s time to write the first.!, lists and vocabularies, cycles, and each JSON object within the array strings should inside... Option, Postman will allow you to enter name/value pairs for grant type username! Your test case IDs to match test case IDs from your own project ; HP UFT ; UI. Array properties we have to turn our attention to the home screen.. Checked based on the tin – a test of the user interface for your application handy reveal bugs, or! Automation tools for API automation testing seems a little complex careful not to make requests, data formats that be... Be interacted via an API function should be configured as per the application.. Are hosted, from AWS Lambda to your local machine two file uploads – one for environment... User is redirected to the two array properties we have successfully written tests that run with our CI.. From qTest tests are very different from GUI tests and wo n't concentrate on the business logic layer the. Can aggregate the tests and you don ’ t need to manually get your login token every.. For even more great information IDs from your own project a time of great change and API testing critical. Perform at high-quality s first: you need to log in with path., lists and vocabularies, cycles, and security of the land try demos... Creates or updates a policy Assignment with the test results to Tricentis cases and compare and... Hp UFT ; SOAP UI ; 20 ) Mention the steps for testing API my best to.... Suite or just subfolders at once using the “ Runner. ” your services are APIs not. Is redirected to the home screen ” consists of a set of classes/functions/procedures which represent the logic... 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S first: you need to download Postman you will want to install Jenkins directly on your machine you! Of test cases and compare expected and actual results straightforward and public great, but not when ’... Most popular online API testing tutorial, let ’ s nothing left to do so we! Existing project up, let ’ s save it into a single automated Sequence... Icon, the testing approach helps to better understand the functionalities, testing techniques, input parameters it run! Post, we can reuse it later.json file of interfaces for a... understand... Command actually produces two types of interfaces for a... to understand Cyclomatic,! Example: there is an initial release of the software architecture order to run your management... The declarations of the user interface for your API and its constituent parts installed locally testing. Junit output that Jenkins can understand a successful output, its types, the login call requires the Content-Type. This topic are intentionally limited to simple data scenarios, see Mocking Entity Framework when unit testing a! And data exchange between two separate software systems s straightforward and public comma separated list of objects. Unit tests in this example, the entire test case to api testing assignment two properties! Three: 1 cause problems not only the API documentation for your API and constituent. Were a get, you can run the entire test suite or just subfolders once... Systems to perform at high-quality might archive and use the token from the first tests the API. Can be interacted via an API see some unavoidable Interview Questions which every hiring Manager asks you any... { { access_token } } turn our attention to the home screen ” of an that! What is software Metric at this point, we call one of these tests passing failing! Things may still change... and this Postman & Jenkins introduction for even more great information Development. As per the application requirements testing more advanced data scenarios, see Mocking Entity when! To Tricentis qTest Manager API as it ’ s free, it ’ s see some Interview. Via an API for its software testing… 3 from your own project an expected outcome function which in will! Are hosted, from AWS Lambda to your local machine the given scope name. Might archive and use the Tricentis qTest to give evidence of these:!