API Testing Certification Training

Intro of API testing :

API TESTING is a sort of software test that verifies Application Programming Interfaces (APIs) (APIs). The goal of API testing is to ensure that programming interfaces are functional, reliable, performant, and secure. It focuses mostly on the software architecture's business logic layer. API is the layer that sits between the user interface (UI) and the database layer in the creation of software applications (apps). APIs allow data and communication to flow from one software system to another. API testing is a type of software testing that examines APIs directly, including their functionality, dependability, performance, and security. API testing, which is part of integration testing, tests the logic of the build architecture in a short amount of time.

Because data is shared in XML and JSON forms, test automation can be done in any language. Because XML and JSON are often organized data, verification is quick and reliable. Other built-in libraries may be used to compare data in these formats.

Any language can be used to automate tests because data is transferred in XML and JSON formats. Because XML and JSON are both structured data, the verification process is quick and consistent. There are additional libraries built-in to help you compare data in these formats.

Most API/web service specifications exist, allowing you to develop high-coverage automated tests, including functional and non-functional testing.

When compared to UI testing, API testing can save up to eight hours, allowing software development teams to ship products faster.

API Testing Types :

• Validation Testing :

  Validation testing is one of the final processes in the development process and is critical. It examines the product, its behavior, and its efficiency. Validation testing, in other words, can be viewed as a guarantee of proper development.

• Functional Testing :

  This includes putting specific functions in the codebase to the test. These features reflect certain circumstances to ensure that API methods are handled correctly and within the parameters set.

• UI Testing :

  A test of the user interface for the API and other important pieces is referred to as UI testing. UI testing is more concerned with the interface that connects to the API than with the API itself. Although UI testing is not a specialized API test in terms of coding, it nonetheless provides an overview of the app's front and back ends' health, usability, and efficiency.

• Security Testing :

  This practice protects the API implementation from outside dangers. Additional steps in security testing include validation of encryption technologies and the architecture of the API access control. User rights management and authorization validation are also included.

• Load Testing :

  After a specific unit or the entire codebase has been completed, load testing is usually performed. This method verifies that the theoretical solutions operate as expected. The app's performance is monitored during load testing in both normal and peak settings.

• Runtime and Error Detection :

  This testing type is concerned with the API's actual operation, particularly the general outcomes of utilizing the API codebase. Monitoring, execution problems, resource leakage, and error detection are all parts of this technique.

• Penetration Testing :

  The second test in the auditing process is penetration testing. Users with minimal API understanding will attempt to analyze the threat vector from the outside in terms of functions, resources, processes, or the complete API and its components in this scenario.

• Fuzz Testing :

  Another phase in the security audit process is fuzz testing. Fuzz testing involves feeding the system a large amount of random data (referred to as "noise" or "fuzz") in order to detect any induced crashes or aggressive behaviour. To prepare for "worst-case scenarios," this technique tests the API's boundaries.

Challenges of API Testing :

• The three basic problems of Web API testing include parameter combination, parameter selection and call sequence.
• There is no graphical user interface (GUI) to test the application, making it impossible to provide input values.
• The validation and verification of results in a separate system is sometimes difficult for the testing system.
• Parameter selection and classification must be known to the testers.
• An exceptional handling function must be provided.
• An exception handling function must be performed.
• It is necessary to test the exception handling function.
• For testers, coding knowledge is required.



API Testing Jobs:

• Automation Test Engineer (API Testing )
• Microsoft Functional Testing Application Developer.
• Test Analyst/Senior Test Analyst.
• Automated Testing Test Automation Engineer.
• Azure, API and SQL skillset test lead – C2h Infosys.
• QA - TESTING - Mobile Gaming.

Key Roles and Responsibilities of Automation Test Engineers :

Automation Test Engineers have a variety of tasks and duties, as previously stated. Automation Test Engineers have a variety of roles and responsibilities, including :

• Choosing and identifying automated test scenarios
• Using several designs and recording the automated test technique
• Creating and obtaining permission for an automation test plan
• In order to set up the Selenium Test Environment (STE), you must first configure it.
• Using an Integrated Development Environment to Participate in Selenium Environment Setup (IDE)
• Automating a framework's design and putting it into action according to the project's structure
• The test cases are created, enhanced, debugged, and run.
• The defect command process is being collected and monitored.
• Taking care of the changes and running regression tests
• Developing precise answers to problems involving object identification and error handling
• Interacting with customers/clients to resolve concerns and keep them informed about the situation

Roles and Responsibilities of Manual Test Engineers :

Manual Test Engineers have a lot more work to accomplish and compared to Automation Test Engineers. Manual Test Engineers are responsible for the following tasks :

• Analyzing the needs
• Making plans for tests
• Test cases must be written and documented.
• Test plans and test cases are being reviewed.
• Recognizing the test data's requirements
• Automated testing.

Roles and Responsibilities of Senior Test Analyst :

The Senior Test Analyst will schedule testing and prepare/review testing documentation, such as test requirements/conditions, test cases, and scripts. Wherever possible, the Senior Test Analyst will be in charge of encouraging, promoting, and advancing the development of extensive automation.

Roles and Responsibilities of Test Lead :

1. The Test Lead / Manager is in charge of establishing and directing the Testing Team to project success.

2. Defining the scope of testing in relation to each release/delivery, Managing and deploying testing resources.

3. The Testing Team plans, deploying, and managing the testing effort for any particular engagement, as well as applying the relevant test measurements and KPIs in the product.

Why is it a good career choice?

This is because, despite the fact that there are plenty of excellent coders, the coders who produced the scripts created the greatest website possible. There will be setbacks, such as when traffic spikes and the server becomes overloaded, causing the site to fail, and so on. There are thousands of issues that can arise. The requirement for software testing arises in this situation. So, if you've decided to pursue an API testing career but aren't sure if you're on the proper track, we'll explain why.

There is a popular misconception that testers are paid less than developers. However, this is completely inaccurate, as a fresher pay scale will remain the same whether you're a Tester or a Developer. Later, the amount of appraisal you will receive is determined by your performance. Every other employer provides a raise to qualified employees, regardless of their position.

As a professional with a background in software development, it's safe to assume that you're well-versed in the software development life cycle. Because you know how to design an application, there is an implicit understanding that you will check it for correctness. Also, transitioning to API Testing will help you because of your coding expertise.

Features of API Testing :

To begin with, a simple REST client. Second, it has a user-friendly interface that makes it simple to operate. Finally, it is compatible with Chrome Apps, Windows, Mac, and Linux Apps and can be used for both exploratory and automated testing. It also offers a number of additions, such as support for Swagger and RAML formats. There are also features such as run, test, document, and monitor. Furthermore, there is no requirement to learn a new language. Allow for easy information exchange within the team by allowing them to package up all requests and expected responses, which they may then email to their colleagues.

Postman is a simple REST client that you may use right away with the help of its Chrome plug-in. Both Mac and Windows versions are available. Postman provides a sophisticated user interface that many other REST clients lack, making it simple to use. It also makes it simple to share your knowledge with coworkers because you can package up all of your requests and expected responses and deliver them to them all at once.

Postwoman, a Postman alternative, is a relatively new tool that has grown in popularity in recent months. It includes a simple and modern user interface that makes creating API calls a breeze.

Tricentis has just launched Interactive Testing, which allows test managers to invite external manual testers who do not use Tosca to participate in the testing process. Without needing to configure Tosca environments, run the test cases and gather the results. To put it another way, this new functionality allows you to perform manual testing without having to install Tricentis Tosca.

Why create a solution from scratch when this fully functional test tool is dedicated solely to API testing? You can also utilise Groovy to code your solution in SoapUI if you have a specific workflow or feature to build.

JMeter offers all the tools you need to test an API and some extras to optimise your efforts to test an API. JMeter, for example, can interact with CSV files automatically, allowing your teams to easily generate unique parameter values for API tests. It also interfaces with Jenkins, allowing you to add API tests in your continuous integration workflows.

Apigee is a cross-cloud API testing solution that allows users to monitor and evaluate the performance of APIs. It also supports and creates APIs with other editors such as Swagger. For starters, it gives you the ability to develop, monitor, deploy, and scale APIs.

Taurus strength is in its ability to write tests in YAML, a human-readable and editable format that allows you to describe a test in a single text file. A full-fledged script can be described in roughly ten lines of text, allowing teams to express their tests in either a YAML or JSON file.

Benefits Of API Testing Training :

• Immediate Testing : Meaning that the term once constructed does not have to wait for a new term to be fully constructed as the independent validation process helps to rectify it earlier.

• Maintenance of user-friendly tests : changes to the API are constrained and rarely needed to perform a refactoring test within seconds.

• Faster time for resolution : We know the exact location of the break-in any failing test case and the flaw has been detected in a very short period.

• Quick and Fast Test : coverage means that errors can be detected and debugged in a decreased period. The time required for UI testing is three times faster.

Payscale :

The business logic layer is represented by a set of classes, functions, and methods in the API. If an API is not thoroughly tested, it may cause issues in both the API application and the caller application. In software engineering, it's a must-do test. In India, the average compensation for developers is 117K days or 600 daily. Entry levels are starting at 700K year, with most experienced professionals accounting for up to 240K annually.