What is the best approach method to perform API testing?

Question

What is the best approach method to perform API testing?

Answer

The following factors should be considered when performing API testing: Defining the correct input parameters Verifying the calls of the mixture of two or more added value parameters Defining the basic functionality and scope of the API program Writing appropriate API test cases and making use of testing techniques such as equivalence class, boundary value, etc. to check the operability Testing case execution Comparing the test result with the expected result Verifying the API behavior under conditions such as connection to files and so on.