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API Testing
Perform REST API Testing with Java, REST API Automation Testing from basic Framework with Java & TestNG. Learn Git, Maven, Jenkins, SOAP, API Testing.Preview API Testing course
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API (Application Programming Interface) Testing is a type of software testing that focuses on verifying the functionality, reliability, performance, and security of APIs. APIs serve as the intermediaries that allow different software applications to communicate and interact with each other. API testing involves sending requests to an API and analyzing the responses to ensure that it behaves as expected under various conditions.
How API testing works:
1).Understanding the API: The first step in API testing is to understand the API's functionality, endpoints, parameters, request methods (e.g., GET, POST, PUT, DELETE), authentication mechanisms, and expected responses.
2).Test Design: Based on the API specifications and requirements, test scenarios are designed to cover various use cases, including positive and negative test cases. This involves determining what inputs to send to the API, what outputs are expected, and any error conditions to validate.
3).Test Execution: API tests are executed by sending requests to the API endpoints using testing tools or programming libraries. The responses are then analyzed to verify whether they meet the expected criteria, such as correct status codes, response payloads, headers, and error messages.
4).Assertions and Validation: During test execution, assertions are used to validate the API responses against expected outcomes. This includes verifying data integrity, checking for the presence of specific elements or fields, and ensuring that error handling is done correctly.
5).Reporting and Analysis: Test results are captured and analyzed to identify any failures, errors, or performance bottlenecks. Detailed reports are generated to provide insights into the API's behavior and any issues that need to be addressed.
Benefits of learning API testing include:
a).Improved Quality: API testing helps identify defects early in the development lifecycle, leading to higher software quality and reliability. By validating the behavior of individual API endpoints, developers can ensure that the entire application functions correctly when integrated.
b).Faster Feedback: API tests can be automated, allowing for quick and frequent execution without the need for manual intervention. This enables faster feedback on changes made to the API or underlying codebase, facilitating agile development practices.
c).Cost-Effective: Automated API testing reduces the time and effort required for regression testing, allowing teams to focus on delivering new features and enhancements. This can result in cost savings by streamlining the testing process and minimizing the need for manual testing resources.
d).Integration Testing: API testing enables thorough testing of integrations between different components or services within a software ecosystem. By validating interactions between APIs, developers can ensure seamless communication and data exchange between systems.
e).Performance Optimization: API testing helps identify performance bottlenecks, latency issues, and scalability concerns early in the development cycle. By simulating various load conditions and analyzing response times, teams can optimize API performance and enhance overall system efficiency.
f).Security Validation: API testing can uncover security vulnerabilities, such as injection attacks, authentication bypasses, and data exposure risks. By validating input validation, access controls, and encryption mechanisms, developers can strengthen the security posture of their APIs and prevent potential breaches.
Uplatz provides this comprehensive course on API Testing. Learning API testing equips software professionals with essential skills for validating the functionality, reliability, performance, and security of APIs, thereby contributing to the development of robust and resilient software solutions.
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1).Offer access to certain services and provide communication between software components.
2).Design different test harnesses for the API testing in hand.
3).Use command-line scripting tools to evaluate and test APIs.
4).Test application programming interfaces to determine their performance, functionality, security, and reliability.
5).Analyze Functional Test.
API Testing – course curriculum
1. Introduction to JAVA basics
a). Objects and Classes
b). Control Structure
c). Conditional Statements
d). OOPs Concepts in Java
e). String handling
2. Web Service Basics
a). What is web service?
b). Web service Example
c). Different types of Services: SOAP & REST
3. Setup Environment
a). Setup SOAPUI Free Version
b). Setup SOAPUI Pro Version
c). Free SOAP Web services
d). Difference between SOAP and Rest Services
e). Advantage of Rest Services over SOAP Services
f). UDDI
4. Jump into SOAP UI / ReadyAPI
a). What is SOAPUI
b). SOAPUI work hierarchy
c). First SOAP Test Case/SOAP Request test step
d). What is ReadyAPI
e). Understanding of ReddyAPI test Steps
5. Properties At Different SOAPUI Level
a). Global properties
b). Project level property
c). TestSuite level property
d). TestCase Level Property
6. Test steps in SOAPUI
a). Delay Test Step
b). Groovy Script test step
c). Property test step
d). Manual Test Step
e). Run Test Case Step
f). Assertion Test step
7. Parameterization / Data driver Test Cases
a). Data Source-Data source Loop using Grid
b). Data Source looping using text file
c). Data Source looping using excel file
d). Data Sink Step
e). Data source Loop using Data sink
8. SOAPUI Utilities
a). Extent Reporting
b). Data-Driven Framework
c). PDF Reporting
9. Reporting in SOAPUI/Pro
10. Command Prompt Execution
a) Run Functional suite from the command prompt
b). Run Load test suite from the command prompt
11.Groovy Programming-Basic to Advance
a). Groovy coding environment setup
b). Class and objects
c). Groovy Basics
d). Groovy Programming KickOFF
e). Programming Exercise-Number Swapping
f). Groovy Condition Handling
g). Programming Exercise-Check Even Odd
h). Groovy: Arrays
i). Groovy: For Loop
j). Groovy: While Loop
k). Groovy: For Each Loop
l). Programming Exercise: Prime Number
m). Programming Exercise: Fibonnaci series
n). Groovy String Handling
12. XPATH and XQUERY Assertion
a). XPATH Assertion
b). XQuery Assertion in soapUI
13. Basics of Restful Services
a). What is Web service
b). Request and Response
c). What is Rest
d). HTTP Methods
e). Request and Response Methods
14.Using Postman for Testing
a). Deploying the Test Application in Tomcat
b). Application under Test
c). Testing GET endpoint
15. Query Parameter
a). Handling the query parameter from code
16. Introduction to Rest Assured
a). Introduction to course material
b). Setting up the Rest Assured Framework
c). Rest assured with BDD Framework
d). Coding style
e). Understanding of Rest Assured -Behaviour Driven Framework
17. HTTP Get Method using Rest Assured
a). Writing GET Method
b). Handling Response
c). Handling and validating response status code
d). Setup using rest assured environment variable
e). Creating GET Request with custom headers
f). Validating Response Content
g). Validating using XMLpath class
h). Validating using JsonPath Class
i). Handling query parameters
18. HTTP Put and Delete method using Rest Assured
a). Writing the PUT method
b). Writing Delete Method
19. Working with Twitter API
a). Introduction and creating an app for Twitter
b). POST-Status-Update on Twitter
c). Get the list of followers
d). Deleting status update from Twitter wall of accounts
The API testing Certification ensures you know planning, production and measurement techniques needed to stand out from the competition.
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. Since APIs lack a GUI, API testing is performed at the message layer.
The professionals and graduates want to excel in their chosen areas. It is also well suited for those who are already working and would like to take certification for further career progression.
To keep up-to-date with API testing trends, it’s important to keep learning new skills. There are a lot of testing courses and API testing certifications available online today. who are looking to get ahead with their personal brand in the constantly-evolving digital space.
Uplatz online training guarantees the participants to successfully go through the API testing certification provided by Uplatz. Uplatz provides appropriate teaching and expertise training to equip the participants for implementing the learnt concepts in an organization.
Course Completion Certificate will be awarded by Uplatz upon successful completion of the API testing online course.
The API testing Associate draws an average salary of $106,080 per year depending on the knowledge and hands-on experience. The API testing Associate job roles are in high demand and make a rewarding career.
The role of API tester is to be involved in the quality assurance stage of software development and deployment. You'll conduct automated and manual tests to ensure the software created by developers is fit for purpose and any bugs or issues are removed within a product before it gets deployed to everyday users.
Note that salaries are generally higher at large companies rather than small ones. Your salary will also differ based on the market you work in.
The following are the job titles:
a).API Tester
b).Windowapp/Api Tester
c).Api Tester withCI
d).API Automation tester
e).API Engineer
Q1). What is API?
Ans-API (Application Programming Interface) helps in communication and data exchange between two software systems. API act as an interface between two applications and allows the two software systems communicate with one another. API is a collection of functions which can be executed by another software program.
API works as; it takes a request from the source, takes that request to the database, fetches the request data from the database and returns a response to the source. API takes the requests from the user and gives the response without exposing the internal details. API acts as Abstraction.
Example: Amazon API, Google Map API
Q2).What is API testing?
Ans-API testing is a type of software testing that involves testing APIs directly. API is a part of integration testing to check whether the API meets expectations in terms of functionality, reliability, performance, and security of applications. Multiple API system can performed API testing. In API testing, our primary focus is on Business Logic Layer of the software architecture.
Q3).What are the types of API testing?
Ans-API testing involves the following types of testing:
a).Unit Testing
b).Functional Testing
c).Load Testing
d).Runtime/Error Detection
e).Security Testing
f).UI Testing
g).Interoperability and WS compliance Testing
h).Penetration Testing
i).Fuzz Testing
Q4).What are the protocols used in API Testing?
Ans-Protocols used in API testing are:
a).HTTP
b).REST
c).SOAP
d).JMS
e).UDDI
Q5).What are the tools used for API Testing?
Ans-Tools used for API testing are:
a).Parasoft SOAtest
b).PostMan
c).AlertSite API monitoring
Q6).What is API test environment?
Ans-For API the test environment is a quite complex method where the configuration of server and database is done as per the requirement of the software application. API testing does not involve graphical user interface (GUI).
API is checked for its proper functioning after installation.
Q7). What is API framework?
Ans-API framework is described by the config. File which consist of the list of all APIs that are required to be activated and are activated for any particular program run. This is essential as every test run does not require all APIs.
Q8).What are the limits of API usage?
Ans-Many APIs have certain limit set up by the provider. Hence, try to estimate our usage and understand how that will impact the overall cost of the offering.
Q9).What are the advantages of API testing?
Ans-Advantages of API testing are:
a).Test for core functionality: API testing provides access to the application without the user interface. The core functionality of the application will be tested before the GUI tests. This will help to detect the minor issue which can become bigger during the GUI testing.
b).Time effective: API testing is less time consuming than GUI testing. Particularly, API test requires less code so it can provide better and faster test coverage compare to GUI test automation. This will reduce the cost for the testing project.
c).Language Independent: In API testing data is exchange using XML or JSON. These transfer mode are completely language-independent, which allows users to select any code language when adopting automation test service for the project.
d).Easy Integration with GUI: API tests provide highly integrable tests which is useful to perform functional GUI tests after GUI tests. Simple integration would allow new user accounts to be created within the application before GUI started.
Q10).What are the principles of an API test design?
Ans-Here, are the seven principles of API test design.
a).Exhaustive Testing: Exhaustive testing is not possible. Instead we need optimal amount of testing which is based on the risk assessment of the application.
b).Defect Clustering: Defect Clustering states that a small number of modules contain the most of the defect detected. Approximately 80% of the defect found in 20% of the modules. By experience we can identify such risky modules. But this approach has its own problems. If the same tests are repeated over and over again, eventually the same test case will no longer find new bugs.
c).Pesticide Paradox: Testers cannot depend on existing technique. They must have to look continually to improve the existing method to make testing more effective. But even all these hard work in testing we can never claim our product is bug free. To overcome this, test cases need to be regularly reviewed and revised add new and different test cases to help find more defects.