Introduction to APIs | Bondar Academy

Lesson Summary

In this module, we will explore how to work with APIs , including topics such as API mocking , intercepting API calls, and testing APIs using Playwright . What is an API? API stands for Application Programming Interface , which can also be understood as Application Communication Interface . This interface allows applications to communicate with each other, typically between a client (like a browser) and a server . API Structure URI/URL: Each API has a unique URI or URL that the client uses to access it. API Request Methods: POST : Create a new record. GET : Read a record. PUT : Update an existing record. DELETE : Remove a record. HTTP Response Status Codes 200 Level: Successful requests (e.g., 200 , 201 ). 400 Level: Client errors (e.g., 404 for not found). 500 Level: Server errors (e.g., 500 for internal server error). Testing with Playwright Playwright allows for both end-to-end testing and API testing . In end-to-end testing, the application interacts with the server, while in API testing, Playwright can directly send API calls and validate responses without the browser, making it faster and more stable. For a deeper understanding of API testing with Playwright, consider exploring the course Playwright API Testing Mastery . Next, we will see these concepts in action.