Why API Testing is Important in our Testing Domain?

Advantages of API testing:

• We can eliminate minor errors before they turn into major problems of the future as API testing is done on the code level.
• API testing involves end-to-end testing of functions and not on separate modules.
• API monitors the application under various possible scenarios and makes the developer understand future errors.
• It is faster than GUI, and testing is done on core functionality.
• API testing uncovers all the security-related dangerous issues. Being a part of integration testing validates your software architecture quickly.
• It allows software development teams to release products faster, unlike UI testing.

API addresses the central layer of an application in a conventional three-level design. The two layers, GUI and Database, are associated by API and business rationale is administered.

It was a primitive method that testing was done at the GUI layer. But now, using API, analyzers discover bugs in business rationale. The testing at the API layer lowers the expenses as bugs related to rationale are detected sooner.

API testing is more suitable for test automation and continuous testing, used with agile development and DevOps than GUI testing.

Types of API testing:

• Unit Testing
• Functional Testing
• Integration Testing
• Performance Testing
• Load Testing
• Runtime Error Detection
• Security Testing
• Fuzz Tests
• Validation Testing