What is Test API ?

API (Application Programming Interface)

API is the abbreviation for Application Programming Interface, which is a product i.e. the middle person that permits two applications to converse with one another. Each time you utilize an application like Facebook, send a text or check the climate on your telephone, you are utilizing an API.

At any point when you utilize an application on your cell phone, the application interfaces with the internet and sends information to a server. The server recovers that information, interprets it, plays out the fundamental activities, and sends it back to your telephone. The application then, at that point, deciphers that information and presents you with the data you needed in a coherent manner. 

Test API: Test API is a library of test and utility APIs that empowers engineers and analyzers to make testing tools and computerized tests for .NET and Win32 applications. Test API gives a bunch of normal test building blocks that are types, information constructions, and calculations in a straightforward, layered, componentized, and archived stack.

Where to use Test API?

There are three separate layers in an ordinary application: 

• The presentation (or UI) layer
• The business layer
• The data set layer for demonstrating and controlling information.

Programming interface testing is performed at the most basic layer: business, in which business rationale handling is done and all exchanges between the UI and data set layers to occur.

Why Choose Test API?

• Reveals little issues before these become greater issues API testing helps assess the code-level usefulness and one can check the toughness of the applications before GUI tests.
• It can assist with uncovering more modest blunders from the beginning before these become bigger issues sometime in the future.
• The exchange model while directing API testing is language-free. The information is traded utilizing JSON or XML.
• More straightforward joining with GUI API testing makes it conceivable to have testing for better coordination. You are intending to lead GUI testing at a later stage.

How to use Test API?

•  Understand API requirements
• Determine the API yield status
• The most well-known API yield you really want to check in API testing is the reaction status code. Confirming in the event that the reaction code is equivalent to 200 or not to conclude whether an API testing is passed or fizzled is recognizable to new API analyzers. This is definitely not an off-base check. Notwithstanding, it doesn’t mirror all test situations of the API.
• Focus on small functional APIs

In a testing project, there are always some APIs that are simple with only one or two inputs such as login API, get token API, health check API, etc. 

Types of Test API:

• Validation Testing: Validation testing happens among the last advances and assumes a fundamental part in the improvement interaction. It checks the parts of the item, conduct, and productivity. As such, approval testing should be visible as an affirmation of the right turn of events.
• Functional testing: Remembers testing specific capacities for the codebase. These elements are the portrayal of explicit situations to ensure the API capacities are taken care of well inside the arranged boundaries.
• UI testing: UI testing is characterized as a trial of the UI for the API and other vital parts. UI testing centers more around the connection point which integrates with the API rather than the API testing itself.
• Security testing: This training guarantees the API execution is secure from outer dangers. Security testing likewise incorporates extra advances like approval of encryption techniques, and of the plan of the API access control. It likewise incorporates client privileges the executives and approval.
• Penetration testing: Penetration is viewed as the second test in the inspecting system. In this kind, clients with restricted API information will attempt to evaluate the danger vector according to an external viewpoint, which is about capacities, assets, cycles, or mean to the whole API and its parts.
• Fuzz testing: Fuzz testing is one more advance in the security review process. In fuzz testing, a tremendous measure of arbitrary information (alluded to as “commotion” or “fluff”) will be entered into the framework to identify any constrained crashes or negative ways of behaving.