What is API testing?
Programming interface testing is a black box test assessing APIs either freely or as a component of the mix testing to guarantee that an API meets:
Usefulness
Security
Execution
Unwavering quality
Numerous applications utilize a 3-level engineering model (See Figure 1) These levels are:
Show level: The UI. Clients speak with the application at this level.
Application level (rationale level): Data is handled and adjusted at this level given the principles that have been characterized. APIs are utilized to speak with the information level and API testing is directed at this level.
Information level: All data handled by the application is put away at this level.
Advantages of Incorporating API Testing in Development
Counting API tests in your test-driven improvement (TDD) process gives a large group of advantages to designing groups across the lifecycle that get passed down to clients as better quality administrations.
There are 3 basic ways that your organization will profit from incorporating API tests in your improvement cycle:
1. Test Quality
On the off chance that you hold on until after improvement to assemble your API tests, you'll normally fabricate them to be one-sided toward positive experiments. When an API or piece of programming is constructed, you're centered around how it should perform rather than the other, similarly possible situations, wherein it will fizzle. Additionally, similar to emphasizing programming during improvement, repeating API tests will just make them more grounded and more far-reaching, which will help the group in the long haul, raise the item (or API) quality, and will diminish the number of shortcomings that should have been seen as from here on out.
2. Test Coverage
Considering every contingency of potential programming disappointments is a basic part of keeping a quality item and client trust. Programming interface testing during advancement can uncover issues with your API, server, different administrations, organization, and more that you may not find or address effectively after arrangement. When your product is out underway, you'll assemble more tests to represent new and developed use cases. Those tests, notwithstanding the ones you worked on during advancement, keep you covered for almost any bomb situation, which keeps QA and client service groups from being assaulted with help tickets.
3. Test Reuse
One of the most mind-blowing motivations to make API tests in the beginning phases are the prizes you'll feel after arrangement in that the majority of your tests are as of now dealt with. For example, Runscope permits you to reuse similar tests in different conditions, and copy and offer tests. Your dev and QA groups construct tests and use them in dev and organizing conditions, then, at that point, your DevOps groups can reuse those equivalent tests and run them on a timetable underway to screen those utilization cases. DevOps then repeats and adds more tests, which can be reused by dev and QA groups while working out new endpoints. Reusing API tests across the improvement lifecycle works with joint effort among groups and gives a more far-reaching and exact testing ordinance.