API Testing Glossary

Important definitions and terminologies used in API Testing

 

A B C D E F G H I J K L M N O P Q R S T U V W X Y

A

API in API Testing – API stands for Application Programming Interface. It is a set of rules and protocols that allows different software applications to communicate with each other. In API testing, APIs are tested to ensure that they are functioning properly and providing accurate responses to requests.

API Blueprint in API Testing – API Blueprint is a high-level, human-readable documentation format for RESTful APIs. It describes the structure and functionality of an API, including endpoints, requests, responses, parameters, and data models. In API testing, API Blueprint can be used to create documentation and test cases.

API Contract in API Testing – API Contract is a formal agreement between the API provider and the API consumer. It specifies the rules and constraints that the API must adhere to, including data formats, response codes, authentication mechanisms, and error handling. In API testing, API Contract can be used to define and validate the expected behavior of an API.

API Deprecation in API Testing – API Deprecation is the process of phasing out an API by removing or limiting its functionality. It is done to encourage users to switch to newer or better APIs. In API testing, API Deprecation can be tested to ensure that the API is properly communicating its status and that its users are being notified of the deprecation in a timely manner.

API Design in API Testing – API Design is the process of creating an API that is intuitive, easy to use, and meets the needs of its users. It involves defining the endpoints, requests, responses, parameters, and data models that make up the API. In API testing, API Design can be tested to ensure that the API is designed correctly and meets the needs of its users.

API Documentation in API Testing – API Documentation is a set of instructions and information that describes the functionality, parameters, and usage of an API. It can be in the form of a user guide, reference manual, or API Blueprint. In API testing, API Documentation can be used to understand how the API works and to create test cases.

API Endpoint in API Testing – API Endpoint is a URL that represents a specific resource or action in an API. It is the entry point for making requests and receiving responses. In API testing, API Endpoint can be tested to ensure that it is functioning properly and providing the expected response.

API Gateway in API Testing – API Gateway is a server that acts as an intermediary between the API client and the API server. It is responsible for handling requests, routing them to the appropriate backend service, and applying security policies. In API testing, API Gateway can be tested to ensure that it is properly routing requests and applying security policies.

API Key in API Testing – API Key is a secret code that is provided by the API provider to the API consumer. It is used to authenticate and authorize access to the API. In API testing, API Key can be used to ensure that the API is properly secured and that only authorized users have access.

API Management in API Testing – API Management is the process of designing, deploying, and monitoring APIs to ensure that they meet the needs of their users. It includes tasks such as version control, documentation, security, and performance monitoring. In API testing, API Management can be tested to ensure that the API is being properly managed and that its users are being properly served.

API Orchestration in API Testing – API Orchestration is the process of coordinating multiple APIs to work together to perform a complex task. It involves defining the sequence of API calls, managing the flow of data between them, and handling errors and exceptions. In API testing, API Orchestration can be tested to ensure that the APIs are properly coordinated and that the data is flowing correctly between them.

API Request in API Testing – API Request is a message that is sent by the API client to the API server to request a specific action or resource. It includes information such as the endpoint, parameters, headers, and body. In API testing, API Request can be tested to ensure that it is properly formed and contains all the necessary information.

API Response in API Testing – API Response is a message that is sent by the API server to the API client in response to a request. It includes information such as the status code, headers, and body. In API testing, API Response can be tested to ensure that it is properly formed and contains all the necessary information.

API Security in API Testing – API Security is the process of protecting an API from unauthorized access, attacks, and misuse. It includes tasks such as authentication, authorization, encryption, and threat detection. In API testing, API Security can be tested to ensure that the API is properly secured and that it is not vulnerable to attacks.

API Test Design in API Testing – API Test Design is the process of creating test cases that validate the functionality, performance, and security of an API. It involves defining the test scenarios, inputs, and expected outputs. In API testing, API Test Design can be tested to ensure that the test cases are properly designed and cover all the necessary scenarios.

API Test Execution in API Testing – API Test Execution is the process of running the test cases against the API to validate its functionality, performance, and security. It involves sending requests to the API, capturing the responses, and comparing them to the expected outputs. In API testing, API Test Execution can be tested to ensure that the test cases are properly executed and that the results are accurate.

API Testing in API Testing – API Testing is the process of testing an API to validate its functionality, performance, and security. It includes tasks such as API design review, API functional testing, API performance testing, API security testing, and API documentation review. In API testing, API Testing can be tested to ensure that the API is properly tested and that all the necessary test cases have been executed.

API Testing Requirements Gathering in API Testing –  API Testing Requirements Gathering is the process of identifying and documenting the requirements for testing an API. It involves gathering information about the API functionality, performance, security, and other testing requirements. In API testing, Requirements Gathering can be tested to ensure that all the necessary requirements are properly documented and understood.

API Unit Testing in API Testing – API Unit Testing is the process of testing individual units or components of an API in isolation from the rest of the system. It involves testing individual functions, methods, or classes to ensure that they are working as intended. In API testing, Unit Testing can be tested to ensure that the individual units of the API are properly tested and that they work together correctly.

API Version in API Testing –  API Version is a specific version of an API that includes changes and updates to the previous version. It allows users to access new features and bug fixes while still supporting the previous version of the API. In API testing, API Version can be tested to ensure that the correct version of the API is being accessed and that it is properly supported.

API Versioning in API Testing –  API Versioning is the process of managing multiple versions of an API to ensure that they are properly supported and maintained. It involves defining the versioning strategy, managing the version control, and communicating the changes to the API users. In API testing, API Versioning can be tested to ensure that the different versions of the API are properly managed and that they are compatible with each other.

API Virtualization in API Testing –  API Virtualization is the process of simulating an API environment to test its functionality, performance, and security. It involves creating virtual services that mimic the behavior of the actual API, allowing testers to test the API in a controlled environment. In API testing, API Virtualization can be tested to ensure that the virtual services are properly created and that they accurately simulate the behavior of the actual API.

API-First in API Testing – API-First is an approach to software development that prioritizes the design and development of the API before the implementation of the user interface or other application components. It involves defining the API requirements, designing the API, and implementing the API before building other components. In API testing, API-First can be tested to ensure that the API is properly designed and implemented before testing other application components.

Assertion in API Testing – Assertion is a statement or condition that is used to verify the correctness of a test case or API response. It includes checking the values of the response elements, the response status code, and other conditions. In API testing, Assertion can be tested to ensure that the correct assertions are being used and that they are properly verifying the API response.

Async in API Testing – Async is a programming concept that refers to asynchronous processing, where tasks are executed in parallel and the program does not wait for a task to complete before moving on to the next one. In API testing, Async can be tested to ensure that the API is properly handling asynchronous requests and responses.

Authentication in API Testing – Authentication is the process of verifying the identity of an API user. It involves checking the user’s credentials, such as username and password, and allowing access to the API based on their level of authorization. In API testing, Authentication can be tested to ensure that the API is properly authenticating users and allowing access based on their level of authorization.

Authorization in API Testing – Authorization is the process of determining the level of access that an authenticated user has to an API. It involves checking the user’s permissions, such as read, write, or execute, and allowing access to the API based on their level of authorization. In API testing, Authorization can be tested to ensure that the API is properly authorizing users and allowing access based on their level of permission.

AWS API Gateway in API Testing – AWS API Gateway is a fully managed service provided by Amazon Web Services (AWS) that allows developers to create, deploy, and manage APIs at scale. It enables developers to build secure and scalable APIs that can integrate with other AWS services, such as AWS Lambda, Amazon EC2, and Amazon S3.

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B

Backend in API Testing – Backend in API testing refers to the server-side of the application, which processes the API requests and generates the API responses. Backend API testing involves testing the API at the server-side to ensure that it is working as intended, handles data correctly, and returns the expected responses.

Backward compatibility in API Testing – Backward compatibility in API testing refers to the ability of the API to work with older versions of the client-side software that use the API. Backward compatibility testing involves testing the API with older versions of the client software to ensure that it still works as expected and returns the expected responses.

Base URL in API Testing – Base URL in API testing is the initial part of the URL for an API endpoint, which is common across all API requests. Base URL can be used to define the common URL prefix that is used across multiple endpoints. It is used to establish a connection to the server and send the API request.

BaseURI in API Testing – BaseURI in API testing refers to the initial part of the URI for an API endpoint. BaseURI is used to specify the base location of the API endpoint and establish a connection to the server.

BDD (Behavior-Driven Development) in API Testing – Behavior-Driven Development (BDD) in API testing is an approach that focuses on the behavior of the system rather than its implementation details. In BDD, the tests are written in a natural language that is easily understandable by non-technical stakeholders. BDD involves defining the expected behavior of the system in the form of scenarios and then writing tests to validate that behavior.

Binary Data in API Testing – Binary data in API testing refers to data that is encoded in binary format and is transferred over the network using the API. Binary data is commonly used to transfer multimedia content, such as images, audio, and video, as well as other types of data that cannot be represented in plain text.

Black-box Testing in API Testing – Black-box testing in API testing refers to testing the API without any knowledge of the internal workings of the system. Black-box testing involves testing the API based on its input and output without any knowledge of how the system processes the data.

Boundary Testing in API Testing – Boundary testing in API testing refers to testing the API at the boundaries of its input values. Boundary testing involves testing the API with the minimum and maximum values of its input parameters to ensure that it handles edge cases correctly.

Boundary Value Analysis in API Testing – Boundary value analysis in API testing is a technique used to test the behavior of the system at the boundaries of its input values. It involves testing the API with the minimum and maximum values of its input parameters as well as the values just outside those limits to ensure that it handles the boundary values correctly.

Bug report in API Testing – A bug report in API testing is a document that describes an issue or defect that was found during API testing. It includes information such as the steps to reproduce the issue, the expected and actual results, and any supporting documentation or screenshots.

Build Automation in API Testing – Build automation in API testing refers to the process of automating the building and deployment of the API code. Build automation tools can be used to automatically build the API code, run tests, and deploy the code to different environments.

Build Verification Testing in API Testing – Build verification testing in API testing is a type of testing that is performed on a new build or release of the API to ensure that it meets the basic requirements and is stable enough for further testing. Build verification testing typically involves a set of basic tests that are run on the API to ensure that it is functioning as expected.

Business Logic in API Testing – Business logic in API testing refers to the rules and processes that are used to govern the behavior of the API. Business logic is the set of rules that determine how data is processed, what calculations are performed, and what decisions are made based on the input provided to the API. In API testing, it is important to test the business logic of the API to ensure that it is processing data correctly and making the right decisions based on the input provided.

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C

Cache in API Testing – Cache in API testing refers to the temporary storage of data or responses from an API in a local storage location. This is done to reduce the number of API requests and to improve performance by reducing the response time of the API.

Cacheability in API Testing – Cacheability in API testing refers to the ability of the API response to be cached by a client. Cacheability is determined by the Cache-Control header in the API response, which specifies how long the response can be cached and under what conditions the cached response can be used.

Caching in API Testing – Caching in API testing refers to the process of storing a copy of the API response in a local cache to reduce the number of API requests and improve performance. Caching can be done at various levels, such as the client-side or server-side, depending on the architecture of the API.

Client in API Testing – A client in API testing refers to the software application or tool that sends the API request to the server and receives the API response. The client can be a web browser, a mobile application, or any other software that is capable of making HTTP requests.

Client library in API Testing – A client library in API testing is a pre-built software library that provides a set of functions or methods that can be used to send API requests and process API responses. Client libraries are available for various programming languages and frameworks, and they can help to simplify API testing and development.

Client-server architecture in API Testing – Client-server architecture in API testing refers to the architectural pattern in which the client sends requests to the server, and the server responds to those requests. In API testing, the client-server architecture is used to send API requests and receive API responses.

Code Coverage in API Testing – Code coverage in API testing refers to the percentage of code that is covered by automated tests. Code coverage is an important metric in API testing, as it helps to ensure that all parts of the API code are being tested.

Code Review in API Testing – Code review in API testing refers to the process of reviewing the API code to identify and fix any issues or bugs. Code review can be done manually or using automated tools, and it helps to ensure that the API code is of high quality and free from errors.

Code Snippet in API Testing – A code snippet in API testing is a small piece of code that is used to demonstrate or test a specific feature or functionality of the API. Code snippets can be used to test API calls or to demonstrate how to use the API in a specific programming language or framework.

Code-on-demand in API Testing – Code-on-demand is a feature in some APIs that allows the server to send executable code, such as JavaScript, to the client. In API testing, code-on-demand can be tested to ensure that the code is executed correctly and does not introduce security vulnerabilities.

Collection in API Testing – A collection in API testing refers to a group of related resources, such as a group of products in an e-commerce API. Collections can be used to organize resources and make them easier to access and manage.

Collection resource in API Testing – A collection resource in API testing refers to a single item in a collection, such as a single product in an e-commerce API. Collection resources can be accessed and manipulated using API requests.

Command Line Interface (CLI) in API Testing – A command-line interface (CLI) in API testing is a tool that allows users to interact with the API using command-line commands. CLI tools can be used to automate API testing and make it easier to test and debug API requests.

Compatibility Testing in API Testing – Compatibility testing in API testing refers to the process of testing an API to ensure that it works correctly with various systems and configurations, such as different operating systems, browsers, and devices. Compatibility testing helps to ensure that the API works correctly in all environments.

Compliance Testing in API Testing – Compliance testing in API testing refers to the process of testing an API to ensure that it complies with various standards and regulations, such as security standards or industry-specific regulations. Compliance testing helps to ensure that the API is secure and meets industry-specific requirements.

Composite APIs in API Testing – Composite APIs in API testing refer to APIs that are built by combining multiple smaller APIs. Composite APIs can be used to provide a more complex functionality by combining the functionality of multiple APIs.

Configuration Management in API Testing – Configuration management in API testing refers to the process of managing the configuration settings of an API, such as authentication settings, security settings, and performance settings. Configuration management helps to ensure that the API is configured correctly and performs optimally.

Consumer in API Testing – A consumer in API testing refers to a software application or tool that uses the API to perform a specific task or function. Consumers can be web browsers, mobile applications, or any other software that is capable of making API requests.

Content API in API Testing – A content API in API testing refers to an API that is designed to manage and deliver digital content, such as images, videos, and documents. Content APIs can be used to provide content to websites, mobile applications, and other software.

Content-Type in API Testing – Content-Type in API testing refers to the HTTP header that specifies the type of content that is being sent or received in an API request or response. The Content-Type header is used to ensure that the API request or response is interpreted correctly by the client and server.

Continuous Integration (CI) in API Testing – Continuous Integration (CI) in API testing refers to the process of continuously integrating and testing changes to an API codebase to ensure that they do not introduce errors or issues. CI helps to ensure that the API codebase is always stable and reliable.

Contract in API Testing – In API testing, a contract refers to the agreement between the API provider and the API consumer on how the API should behave. The contract specifies the API endpoints, request and response formats, and other details of the API.

Contract Testing in API Testing – Contract testing in API testing is a technique used to ensure that the API provider and the API consumer are adhering to the agreed-upon contract. Contract testing involves testing the API request and response formats to ensure that they match the contract.

CORS in API Testing – Cross-Origin Resource Sharing (CORS) is a security feature in web browsers that restricts web pages from making requests to a different domain than the one that served the original web page. In API testing, CORS testing involves testing the API to ensure that it correctly handles cross-origin requests and that it implements appropriate security measures to prevent unauthorized access.

CRUD in API Testing – CRUD in API testing refers to the four basic operations that an API can perform on resources –  Create, Read, Update, and Delete. CRUD testing involves testing each of these operations to ensure that they work correctly and that they do not introduce errors or issues.

CSV in API Testing – Comma-Separated Values (CSV) is a file format used to store tabular data, such as data from a database. In API testing, CSV files can be used to store test data or to generate test data for automated tests.

cURL (Client URL) in API Testing – cURL (Client URL) is a command-line tool used to make HTTP requests to web servers. In API testing, cURL can be used to test the API by sending HTTP requests and receiving HTTP responses from the server.

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D

Database Testing in API Testing – Database testing in API testing involves testing the interactions between the API and the database. This includes testing the API’s ability to retrieve, create, update, and delete data from the database.

Data-Driven Testing in API Testing – Data-driven testing in API testing involves using data sets to drive automated API tests. Data-driven testing allows for more comprehensive testing of the API by testing multiple scenarios with different sets of data.

Debugging in API Testing – Debugging in API testing involves identifying and fixing errors and issues that occur during API testing. Debugging may involve analyzing error messages, inspecting API requests and responses, and modifying test scripts to fix issues.

Defect in API Testing – A defect in API testing refers to an error or issue that has been identified during testing. Defects may include issues with the API functionality, performance, or security.

DELETE in API Testing – DELETE in API testing is an HTTP method used to request that a resource be removed from the server. DELETE requests are used to delete resources in RESTful APIs.

Dependency Injection in API Testing – Dependency Injection (DI) in API testing is a technique used to decouple the components of an API. DI involves passing dependencies as parameters to components, rather than hard-coding the dependencies within the components themselves.

Deprecation in API Testing – Deprecation in API testing refers to the process of retiring an API or API endpoint. Deprecation typically involves providing advance notice to API consumers and providing guidance on how to migrate to a new API or endpoint.

Design Patterns in API Testing – Design patterns in API testing are reusable solutions to common design problems in API development. Design patterns can help to ensure that APIs are well-structured, maintainable, and scalable.

Development Environment in API Testing – A development environment in API testing is the setup used by developers and testers to build and test APIs. This includes software tools, servers, databases, and other resources required for API development and testing.

DevOps in API Testing – DevOps in API testing involves the integration of development and operations processes to streamline the software development lifecycle. DevOps principles can be applied to API testing to improve collaboration between developers, testers, and operations teams, and to enable continuous integration and delivery of APIs.

Docker in API Testing – Docker in API testing is a containerization platform that enables developers and testers to create and run API tests in a consistent and isolated environment. Docker can be used to package APIs and their dependencies into containers, which can then be run on any system that supports Docker.

Documentation in API Testing – Documentation in API testing refers to the process of creating and maintaining documentation for an API. API documentation typically includes information on API functionality, usage, parameters, and responses, as well as code examples and other resources to help API consumers understand and use the API.

Domain-Driven Design (DDD) in API Testing – Domain-Driven Design (DDD) in API testing is an approach to designing and developing APIs that focuses on understanding the business domain and modeling the API based on business concepts and requirements. DDD can help to ensure that APIs are well-designed, maintainable, and aligned with business needs.

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E

E2E Testing in API Testing – End-to-end (E2E) testing in API testing is a type of testing that verifies the entire API system, including all components and dependencies, from end-to-end to ensure that the API functions correctly as a whole.

Encryption in API Testing – Encryption in API testing refers to the process of encrypting and decrypting data that is transmitted over an API to ensure that it cannot be intercepted or read by unauthorized parties. API testing should include testing of encryption and decryption mechanisms to ensure that they are functioning properly and that data is protected.

Endpoint in API Testing – An endpoint in API testing refers to the URL where an API can be accessed by clients. An API may have multiple endpoints that are used for different functions or by different clients.

Environment in API Testing – Environment in API testing refers to the combination of hardware, software, and network configurations that an API is deployed in. API testing should be performed in various environments to ensure that the API functions correctly in different configurations.

Equivalence partitioning in API Testing – Equivalence partitioning in API testing is a testing technique that involves dividing input data into equivalence classes based on the expected behavior of the API. This technique helps to reduce the number of test cases needed to cover all possible inputs by testing representative values from each class.

Error Codes in API Testing – Error codes in API testing are codes returned by the API to indicate that an error has occurred. API testing should include testing of error codes to ensure that they are returned correctly and that the API can handle error scenarios appropriately.

Error guessing in API Testing – Error guessing in API testing is a testing technique that involves using intuition and experience to identify potential error scenarios and then creating test cases to verify that the API handles those errors correctly.

Error Handling in API Testing – Error handling in API testing refers to the process of detecting, reporting, and resolving errors that occur during API operation. API testing should include testing of error handling mechanisms to ensure that errors are handled appropriately and do not result in system failures.

Exception Handling in API Testing – Exception handling in API testing refers to the process of detecting and handling exceptions that occur during API operation. API testing should include testing of exception handling mechanisms to ensure that exceptions are handled appropriately and do not result in system failures.

Exploratory Testing in API Testing – Exploratory testing in API testing is a testing technique that involves manual testing of an API without a predefined test plan or test cases. Exploratory testing can help to uncover defects and issues that may not be discovered through scripted testing.

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F

Fault Injection in API Testing – Fault injection in API testing involves intentionally introducing faults into an API to observe how the system behaves and recovers from those faults. The goal is to identify potential issues and ensure the API meets performance and reliability standards. Examples include injecting invalid input data, simulating network failures, and introducing coding errors.

Fault Tolerance in API Testing – Fault tolerance in API testing refers to the ability of an API to continue operating correctly even when faults or failures occur in the system. The API is designed to handle faults and recover automatically without interrupting the normal operation. Fault tolerance is important to ensure the reliability and availability of the API.

Functional requirements in API Testing – Functional requirements in API testing refer to the specific actions and behaviors that an API must perform to meet its intended purpose. It includes input/output data, expected response, and error handling. Testing of functional requirements helps to ensure that the API functions correctly and meets the desired behavior.

Functional Testing in API Testing – Functional testing in API testing is a type of testing that verifies whether the API performs the functions it is intended to perform. It focuses on testing the API’s input and output data, responses, and functionality based on functional requirements. The goal is to ensure that the API meets the desired behavior and functions correctly.

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G

GET in API Testing – In API testing, “GET” is a HTTP method used to retrieve data from a server. It is commonly used to retrieve data in a RESTful API. As a tester, you would want to test various scenarios such as correct data retrieval, response codes and data formats returned by the API.

GraphQL in API Testing – GraphQL is a query language used to retrieve data from APIs. In API testing, testers can test queries using different scenarios to ensure that the expected data is returned. The GraphQL schema can be used to validate the response received from the API. Testers can also test for the appropriate error messages in case the query is incorrect.

gRPC (Google Remote Procedure Call) in API Testing – gRPC is a high-performance RPC framework used to build APIs. In API testing, testers can test various scenarios such as correct data retrieval, error handling, and data validation. Testers can also test the performance of gRPC APIs by sending multiple requests and analyzing the response times.

GUI in API Testing – GUI (Graphical User Interface) testing involves testing the graphical interface of an application to ensure that it works as expected. In API testing, GUI testing can be used to test the user interface of API client tools such as Postman or Swagger. Testers can also use GUI testing to test the response generated by the API on the browser or client-side application.

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H

HATEOAS (Hypermedia As The Engine Of Application State) in API Testing – HATEOAS is a principle of RESTful APIs that allows clients to navigate and interact with an API through hypermedia links. In API testing, testers can verify if the API adheres to HATEOAS principles and if the hypermedia links are correctly implemented. Testers can also test scenarios where hypermedia links are not provided or invalid links are provided.

HTTP (Hypertext Transfer Protocol) in API Testing – HTTP is a protocol used for communication between web servers and clients. In API testing, testers can test various aspects of the HTTP protocol, such as request and response headers, status codes, and methods. Testers can also verify if the API supports different HTTP versions, such as HTTP/1.1 or HTTP/2.

HTTP API Testing in API Testing – HTTP API testing is the process of testing APIs using HTTP requests and responses. Testers can use tools such as Postman, SoapUI, or cURL to send HTTP requests and analyze the responses received from the API. Testers can test various aspects of the API such as request and response headers, methods, status codes, and data formats.

HTTP Headers in API Testing – HTTP headers are used to provide additional information about an HTTP request or response. In API testing, testers can test various headers such as content-type, accept, authorization, cache-control, and more. Testers can verify if the headers are correctly set and if the API behaves as expected based on the headers received.

HTTP methods in API Testing – HTTP methods are used to indicate the desired action to be performed on a resource. In API testing, testers can test various methods such as GET, POST, PUT, DELETE, and more. Testers can verify if the API supports the desired methods and if the API behaves as expected based on the method used.

HTTP status codes in API Testing – HTTP status codes are used to indicate the status of an HTTP request or response. In API testing, testers can test various status codes such as 200, 400, 404, 500, and more. Testers can verify if the API responds with the correct status codes for various scenarios such as successful requests, errors, and more.

Hypermedia in API Testing – Hypermedia refers to links that allow clients to navigate and interact with an API. In API testing, testers can verify if hypermedia links are correctly implemented and if the API adheres to HATEOAS principles. Testers can also test scenarios where hypermedia links are not provided or invalid links are provided.

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I

Integration challenges in API Testing – APIs are designed to integrate with other systems and applications, and hence testing their integration is essential. Some of the integration challenges in API testing include testing third-party integrations, testing API workflows, testing data dependencies, and testing API responses with large payloads. Testers need to ensure that the API integrates seamlessly with other systems and applications.

Integration Testing in API Testing – Integration testing is a type of testing that focuses on testing the interaction between different components or systems. In API testing, integration testing involves testing the interaction between the API and other systems or components. Testers can verify if the API integrates correctly with other systems, if it handles data dependencies, and if it can handle large payloads.

Interface generator in API Testing – An interface generator is a tool that generates code for APIs based on a specification file. In API testing, interface generators can be used to automatically generate test cases based on the API specification. Testers can use tools such as Swagger or OpenAPI to generate API specifications and then use interface generators to generate test cases.

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J

Java API testing in API Testing – Java API testing involves testing APIs that are built using the Java programming language. Testers can use tools such as JUnit or TestNG to write automated tests for Java APIs. Testers can also use libraries such as RestAssured or Retrofit to send HTTP requests and analyze responses received from the API.

Jenkins API testing in API Testing – Jenkins is an open-source automation server used for continuous integration and continuous delivery (CI/CD). In API testing, testers can use Jenkins to automate API testing by integrating it with testing frameworks such as JUnit or TestNG. Testers can use Jenkins to schedule API tests, generate reports, and send notifications.

JMeter in API Testing – JMeter is an open-source tool used for load testing and performance testing. In API testing, testers can use JMeter to simulate high traffic scenarios and analyze the performance of the API under stress. Testers can use JMeter to send multiple requests and analyze the response times, error rates, and throughput of the API.

JSON (JavaScript Object Notation) in API Testing – JSON is a lightweight data format used for data exchange between applications. In API testing, testers can test the correct format of JSON data returned by the API. Testers can also test scenarios where invalid or incomplete JSON data is returned.

JSON API in API Testing – JSON API is a specification for building APIs in JSON format. In API testing, testers can verify if the API adheres to the JSON API specification and if the response data is correctly formatted. Testers can also test scenarios where the API returns errors or invalid data.

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K

Karate DSL in API Testing – Karate is an open-source framework that uses the Cucumber syntax for testing APIs. Karate DSL (Domain-Specific Language) is a language used for writing test scenarios in Karate. Testers can use Karate DSL to write automated tests for REST, SOAP, and GraphQL APIs. Karate DSL also supports data-driven testing and scenario outlines.

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L

Layered system in API Testing – A layered system in API testing refers to a system architecture that is composed of multiple layers or tiers, where each layer performs a specific function. In API testing, a layered system can include the API layer, the business logic layer, and the data storage layer. Testing each layer of the system is important to ensure that the API is functioning correctly.

Load testing in API Testing –  Load testing is a type of testing that involves testing the performance of the API under high traffic scenarios. In API testing, load testing can help to identify performance issues such as slow response times, high error rates, and low throughput. Testers can use tools such as JMeter or Gatling to perform load testing on APIs.

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M

Message in API Testing – A message in API testing refers to data sent between systems or components in the form of requests and responses. In API testing, testers can verify if the message sent by the client is correctly interpreted by the API and if the response returned by the API is correct.

Microservices in API Testing – Microservices are a software development approach that involves breaking down a large application into smaller, independent services. In API testing, microservices can be tested individually to ensure that they are functioning correctly and integrated seamlessly with other microservices. Testers can use API testing tools to test microservices in isolation or as part of a larger system.

Mock Servers in API Testing – Mock servers are tools used to simulate API responses without actually sending requests to the API. In API testing, mock servers can be used to test API clients without affecting the actual API. Testers can create mock servers that return pre-defined responses for specific requests, and use them to test various scenarios.

Mocking in API Testing – Mocking in API testing refers to creating mock objects or services to simulate the behavior of the actual system. In API testing, mocking can be used to simulate API responses or to test APIs in isolation. Testers can use mocking frameworks such as Mockito or EasyMock to create mock objects for API testing.

MQTT (Message Queuing Telemetry Transport) in API Testing – MQTT is a lightweight messaging protocol used for communication between devices in the Internet of Things (IoT). In API testing, testers can use MQTT to test APIs that interact with IoT devices. Testers can simulate messages sent by IoT devices and verify if the API correctly interprets the messages and returns appropriate responses.

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N

Negative test case in API Testing – Negative test cases in API testing refer to scenarios where the API is expected to fail. In API testing, testers can use negative test cases to verify if the API is returning appropriate error responses for invalid input or unexpected scenarios. This helps to ensure that the API is robust and can handle unexpected scenarios gracefully.

Newman in API Testing – Newman is a command-line tool for running and testing APIs that are built using the Postman platform. Newman allows testers to run API tests in an automated and continuous manner. It also provides various options for generating reports and integrating with other tools.

Non-functional requirements in API Testing – Non-functional requirements in API testing refer to requirements that focus on the performance, security, and scalability of the API. In API testing, testers can verify if the API meets non-functional requirements such as response time, availability, and security. This helps to ensure that the API is reliable and performs well under various scenarios.

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O

OAuth (Open Authorization) in API Testing – OAuth is an open standard for authorization used by APIs to grant access to resources without sharing the user’s credentials. In API testing, testers can verify if the API correctly implements the OAuth protocol and correctly grants access to resources. This helps to ensure that the API is secure and does not expose sensitive information.

OpenAPI in API Testing – OpenAPI, formerly known as Swagger, is a specification for building and documenting APIs. In API testing, testers can use OpenAPI to generate test cases and validate responses. OpenAPI also provides a standardized way to describe APIs, which helps to ensure that APIs are consistent and can be easily consumed by other systems.

OWASP (Open Web Application Security Project) in API Testing – OWASP is a non-profit organization that provides resources and tools for web application security. In API testing, testers can use OWASP tools and guidelines to test APIs for security vulnerabilities. This helps to ensure that the API is secure and protected from potential attacks.

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P

Pagination of APIs in API Testing – Pagination of APIs refers to the process of breaking down large sets of data into smaller, more manageable pieces. In API testing, testers can verify if pagination is working as expected, ensuring that the API returns the correct data with the appropriate parameters.

Parameters in API Testing – Parameters in API testing refer to the variables or values that can be passed to an API request. Testers can use parameters to test different combinations of inputs to the API and verify if the API returns the correct response.

Payload in API Testing – Payload in API testing refers to the data that is sent in the body of an API request. Testers can verify if the payload data is correctly formatted and structured, ensuring that the API returns the expected response.

Performance testing in API Testing – Performance testing in API testing is the process of evaluating an API’s speed, scalability, and stability under different load conditions. Testers can use performance testing tools to simulate multiple user requests and monitor the API’s response time, throughput, and other performance metrics.

PHPUnit in API Testing – PHPUnit is an open-source testing framework for the PHP programming language. In API testing, testers can use PHPUnit to write unit tests and integration tests for PHP-based APIs.

Positive test case in API Testing – Positive test cases in API testing refer to scenarios where the API is expected to work correctly. Testers can use positive test cases to verify if the API returns the expected response for valid input and parameters.

POST in API Testing – POST is a type of HTTP method used to submit data to an API. In API testing, testers can use the POST method to test if the API correctly receives and processes data from the client.

Postman API Testing in API Testing – Postman is a popular API development and testing tool that allows testers to create and run automated tests for APIs. Testers can use Postman to write test scripts, perform exploratory testing, and generate reports for API testing.

Post-request Script in API Testing – A post-request script in API testing is a script that is executed after an API request has been sent. Testers can use post-request scripts to manipulate the API response data, perform custom validations, or update the test environment.

Pre-request Script in API Testing – A pre-request script in API testing is a script that is executed before an API request is sent. Testers can use pre-request scripts to set up the test environment, configure headers or parameters, or perform data transformations.

Private APIs in API Testing – Private APIs are APIs that are not publicly available and are typically used within an organization or among a select group of users. In API testing, testers can verify the authentication and authorization mechanisms of private APIs, ensuring that only authorized users can access the API.

Public APIs in API Testing – Public APIs are APIs that are publicly available and can be accessed by anyone over the internet. In API testing, testers can verify if the public API documentation is accurate, the API is reliable, and the response time is acceptable.

PUT in API Testing – PUT is a type of HTTP method used to update or modify data in an API. In API testing, testers can use the PUT method to test if the API correctly receives and processes data from the client.

Pytest in API Testing – Pytest is a popular testing framework for the Python programming language. In API testing, testers can use pytest to write unit tests, integration tests, and end-to-end tests for Python-based APIs.

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Q

Query parameters in API Testing – Query parameters in API testing refer to the parameters that are included in the URL of an API request after the “?” symbol. Testers can use query parameters to filter, sort, or paginate the API response data. In API testing, testers can verify if the API correctly handles different combinations of query parameters and returns the expected response. Examples of query parameters include limit, offset, sort, filter, and search.

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R

RAML (RESTful API Modeling Language) in API Testing – RAML (RESTful API Modeling Language) is a language for describing RESTful APIs. RAML can be used in API testing to generate documentation and test cases from the API specification.

RapidQL in API Testing – RapidQL is a query language for APIs that allows developers to query multiple APIs using a single syntax. RapidQL can be used in API testing to simplify the testing of complex APIs.

Representation in API Testing – Representation in API testing refers to the format in which the API data is represented, such as JSON, XML, or CSV. In API testing, testers can verify if the API returns the expected representation format and if the representation format complies with the API specification.

Request in API Testing – Request in API testing refers to the HTTP request that is sent to the API server to retrieve or modify data. In API testing, testers can verify if the API correctly handles different types of requests and returns the expected response.

Request body in API Testing – Request body in API testing refers to the data that is sent in the HTTP request body to create or update data in the API server. In API testing, testers can verify if the API correctly handles different types of request bodies and returns the expected response.

Requirements analysis in API Testing – Requirements analysis in API testing refers to the process of identifying the functional and non-functional requirements of the API and creating a test plan to verify if the API meets these requirements.

Resource in API Testing – Resource in API testing refers to a specific entity or object in the API, such as a user, product, or order. In API testing, testers can verify if the API correctly handles different types of resources and returns the expected response.

Resource hierarchy in API Testing – Resource hierarchy in API testing refers to the relationships between different resources in the API, such as the relationship between a user and their orders. In API testing, testers can verify if the API correctly handles different types of resource hierarchies and returns the expected response.

Resource path in API Testing – Resource path in API testing refers to the URL path used to access a specific resource in the API. In API testing, testers can verify if the API correctly handles different types of resource paths and returns the expected response.

Response in API Testing – Response in API testing refers to the HTTP response that is sent by the API server in response to a request. In API testing, testers can verify if the API correctly handles different types of responses and returns the expected response code and data.

Response body in API Testing – Response body in API testing refers to the data that is sent in the HTTP response body to retrieve or modify data in the API server. In API testing, testers can verify if the API correctly handles different types of response bodies and returns the expected data.

REST (REpresentational State Transfer) in API Testing – REST (REpresentational State Transfer) is a software architectural style that is commonly used for web APIs. In API testing, testers can verify if the API follows REST principles and returns the expected response.

REST-Assured in API Testing – REST-Assured is a Java library for testing RESTful APIs. REST-Assured provides a simple and easy-to-use API for writing API tests.

RESTful API in API Testing – RESTful API in API testing refers to a web API that follows the REST architectural style. In API testing, testers can verify if the RESTful API follows REST principles and returns the expected response.

Risk analysis in API Testing – Risk analysis in API testing refers to the process of identifying and assessing the risks associated with the API and creating a test plan to mitigate these risks.

Root cause analysis in API Testing – Root cause analysis in API testing refers to the process of identifying the root cause of a bug or issue in the API and taking steps to prevent similar issues from occurring in the future.

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S

Schema in API Testing –  A schema is a formal description of the structure and expected data types of an API request or response. In API testing, schema validation is used to ensure that the API response matches the expected schema, which helps to catch errors and inconsistencies in the API implementation.

SDK (Software Development Kit) in API Testing –  An SDK is a collection of software development tools and libraries that are designed to help developers create applications that interact with an API. In API testing, an SDK can be used to simplify the process of sending API requests and handling responses.

Security challenges in API Testing –  API testing presents several security challenges, such as authentication and authorization, data privacy, and protection against attacks like SQL injection and cross-site scripting. These challenges need to be addressed through proper security testing and implementation of security measures in the API.

Security testing in API Testing –  Security testing in API testing involves verifying the security controls implemented in the API, such as authentication, authorization, and encryption, to ensure that they are effective and secure against various types of attacks.

Server in API Testing –  A server is a computer program or a device that provides services to other computer programs or devices. In API testing, the server refers to the computer or device hosting the API, and testing involves verifying that the server responds correctly to API requests and returns the expected responses.

Service virtualization in API Testing –  Service virtualization is a technique used in API testing to simulate the behavior of an API that is not yet available or cannot be accessed for testing. Service virtualization involves creating a virtual service that behaves like the actual API and can be used for testing purposes.

SOAP (Simple Object Access Protocol) in API Testing –  SOAP is a protocol used for exchanging structured information between applications over the internet. In API testing, SOAP APIs are tested by sending SOAP requests and verifying the SOAP responses, which contain XML-encoded data.

SoapUI in API Testing –  SoapUI is a popular open-source tool used for testing APIs, particularly SOAP and REST APIs. It provides a user-friendly interface for creating and executing API tests, as well as features for functional testing, load testing, and security testing.

SoapUI API Testing in API Testing –  SoapUI API testing involves using SoapUI to create and execute API tests, including functional tests, load tests, and security tests. The tool supports various API protocols, such as SOAP, REST, and JMS, and allows for easy integration with other testing tools and frameworks.

SSL Certificates in API Testing –  SSL (Secure Sockets Layer) certificates are used to establish a secure, encrypted connection between the client and the server in API testing. SSL certificates help to ensure that sensitive data exchanged between the client and server is protected from unauthorized access or interception.

State transition testing in API Testing –  State transition testing is a testing technique used to verify the behavior of a system or application as it moves between different states or modes. In API testing, state transition testing can be used to test APIs that change state or mode, such as those that involve authentication or session management.

Stateless communication in API Testing –  Stateless communication is a type of communication where each API request and response is treated as an independent transaction, without any reliance on previous requests or responses. In API testing, testing for stateless communication involves verifying that the API does not rely on any session or context data from previous requests.

Status Codes in API Testing –  Status codes are three-digit numbers returned by an API in response to a request, indicating the success or failure of the request. In API testing, verifying status codes is an essential part of ensuring that the API is functioning correctly, and the expected status codes are returned for different types of requests.

Swagger in API Testing –  Swagger is a popular open-source tool used for designing, documenting, and testing REST APIs. It provides a user-friendly interface for creating and executing API tests, as well as features for generating API documentation and client code in various programming languages.

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T

Test in API Testing –  Testing in API testing refers to the process of verifying that an API behaves as expected, meets the specified requirements, and produces the correct outputs in response to given inputs.

Test automation in API Testing –  Test automation in API testing involves using software tools and scripts to automate the process of executing API tests. Test automation can help to reduce the time and effort required for manual testing and improve the accuracy and reliability of the testing process.

Test case in API Testing –  A test case in API testing is a set of steps or instructions designed to verify a specific aspect of the API behavior. A test case typically includes the inputs, expected outputs, and test data needed to perform the test.

Test case execution in API Testing –  Test case execution in API testing refers to the process of running a test case on the API and verifying the results. Test case execution can be done manually or through test automation, and involves comparing the actual outputs produced by the API with the expected outputs specified in the test case.

Test data preparation in API Testing –  Test data preparation in API testing involves creating or selecting the test data needed to perform the API tests. Test data should include a variety of input values and scenarios that cover the different use cases of the API.

Test environment setup in API Testing –  Test environment setup in API testing involves setting up the required hardware, software, and network infrastructure needed to perform API tests. The test environment should be as close as possible to the production environment to ensure accurate and reliable test results.

Test harness in API Testing –  A test harness in API testing is a set of software tools and scripts used to automate the process of executing API tests. A test harness typically includes features for test case management, test data management, and test result reporting.

Test plan in API Testing –  A test plan in API testing is a document that outlines the testing strategy, objectives, scope, and timelines for API testing. A test plan typically includes details on the testing approach, test cases to be executed, test data needed, and resources required for testing.

Test planning in API Testing –  Test planning in API testing involves defining the objectives, scope, and approach for testing an API. It includes creating a test plan document that outlines the testing strategy, test cases to be executed, test data needed, and resources required for testing.

Test report in API Testing –  A test report in API testing is a document that summarizes the results of API testing. It includes details on the testing approach, test cases executed, test data used, test results, and any defects found during testing.

Test scenario in API Testing –  A test scenario in API testing is a high-level description of a specific aspect of the API behavior to be tested. A test scenario typically includes the expected behavior of the API under specific conditions and the inputs and outputs involved.

Test script in API Testing –  A test script in API testing is a software program or script used to automate the process of executing API tests. Test scripts can be created using various programming languages and can help to reduce the time and effort required for manual testing.

Test strategy in API Testing –  Test strategy in API testing involves defining the overall approach to be taken for testing an API. It includes identifying the testing goals, objectives, scope, and timelines, as well as the testing techniques and tools to be used.

Test suite in API Testing –  A test suite in API testing is a collection of test cases and test scripts designed to test specific features or functionalities of the API. Test suites can be created for different use cases or scenarios and can be executed manually or through test automation.

Testability requirements in API Testing –  Testability requirements in API testing refer to the characteristics of an API that make it easy to test. These include features such as clear documentation, easy-to-use APIs, and the ability to simulate different scenarios and inputs.

Testing Artifacts in API Testing –  Testing artifacts in API testing refer to the documents and materials used to support the testing process. These may include test plans, test cases, test scripts, test data, and test reports, as well as any other documentation or artifacts created during the testing process.

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U

UDDI (Universal Description Discovery and Integration) in API Testing –  UDDI in API testing is a platform-independent, XML-based registry that enables businesses to list their web services and discover other services offered by other businesses. UDDI plays a critical role in API testing by providing a directory of available APIs, which can be used for testing and integration purposes.

Unit testing in API Testing –  Unit testing in API testing is the process of testing individual units or components of an API in isolation. Unit tests are typically created by developers and can help to identify and fix defects in the code before it is integrated into the larger system.

URI (Uniform Resource Identifier) in API Testing –  URI in API testing is a string of characters that identifies a name or a web resource on the internet. URIs are used in APIs to identify resources and to enable clients to interact with them. URIs are essential in API testing as they provide a unique identifier for each resource and can be used to validate that the API is functioning as expected.

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V

Versioning challenges in API Testing – Versioning challenges in API testing refer to the difficulties that arise when managing multiple versions of an API. When an API is updated or changed, it can break existing clients that depend on the API. Testing multiple versions of an API can be time-consuming and complex, and it can be challenging to ensure that all versions are tested thoroughly. Some of the versioning challenges in API testing include managing backward compatibility, maintaining documentation, and handling dependencies between different versions of the API. To address these challenges, it is essential to have a robust versioning strategy in place, which includes clear documentation, version control, and automated testing processes.

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W

Web API in API Testing –  A Web API in API testing is an API that is accessed using the HTTP protocol and is typically designed to be used by web applications. Web APIs are often RESTful, which means they use standard HTTP methods to interact with resources.

Web Scraping in API Testing –  Web scraping in API testing refers to the process of extracting data from websites using automated tools. Web scraping can be useful in API testing for collecting data for testing and validation purposes, but it can also be used to simulate API responses for testing.

Web Service in API Testing –  A web service in API testing is a software system designed to support interoperable machine-to-machine interaction over a network. Web services typically use XML or JSON messages to exchange data and can be accessed using standard web protocols such as HTTP.

Webhook APIs in API Testing –  Webhook APIs in API testing are APIs that allow clients to receive notifications or updates when certain events occur. Webhooks can be useful in API testing for triggering tests based on specific events or changes in the API.

WebSockets in API Testing –  WebSockets in API testing are a protocol that enables real-time, bidirectional communication between a client and a server. WebSockets can be useful in API testing for simulating real-time scenarios and for testing the performance and scalability of an API.

WSDL (Web Services Description Language) in API Testing –  WSDL in API testing is an XML-based language used to describe the functionality offered by a web service. WSDL defines the operations, messages, and data types used by the service, and it can be used to generate code for accessing the service in various programming languages.

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X

XML (Extensible Markup Language) in API Testing –  XML in API testing is a markup language used to store and transport data. XML is often used in APIs for representing data structures and for exchanging data between applications.

XML-RPC (Remote Procedure Call) in API Testing –  XML-RPC in API testing is a protocol that enables remote procedure calls using XML messages over a network. XML-RPC can be useful in API testing for simulating remote procedure calls and for testing the performance and functionality of an API.

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Y

YAML (Yet Another Markup Language) in API Testing – YAML in API testing is a human-readable data serialization format that is commonly used for configuration files and data exchange. YAML is often used in API testing to define test data and test scenarios in a structured, easy-to-read format. YAML is also used in API documentation to provide examples and sample requests and responses. YAML is similar to JSON but has a simpler syntax and can be easier to read and write for humans.

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