What is an interface? What is interface testing?

Interface

Concept

• The interface is ： Between systems , Between components , The channel of data transmission and interaction .

Type of interface

• By agreement ：http、tcp、IP

• By language ：C++、java、php ...

• By scope ：

  • Between systems ：

    • Between multiple internal systems
    • Between internal and external systems

• Between procedures ：

  • Between methods , Between functions , Between modules

    #  Interface 
    def eat(something):
        print(f' The bird is eating {
              something}')
    
    #  Use interface , To transfer data 
    def bird():
        eat(' Apple ')
    
    bird()
    

The interface test

Concept

• Interface testing is , Test the interfaces between systems or components . Verify the correctness of the passed data and the correctness of the logical dependency ！

principle

• The interface test , It mainly aims at the test objectives —— The server

• How to measure ？

  • Simulation client , Send request to server .

• With what ？

  • Tools ：fiddler、postman、jmter
  • Code ：python + UnitTest frame + Requests frame

• What to measure ？

  • test The server requests for the client , Whether the returned response data is consistent with the expected results ！
    • Human eye contrast
    • Assertion

characteristic

• In line with the concept of quality control moving forward
• You can find some problems that cannot be found by page operation
• Interface testing is low cost and high efficiency
• Interface test is to test the system from the perspective of users

Realization way

• Tools ：JMeter、Postman、fiddler
• Code ：Python + Requests + UnitTest

What is automated interface testing ？

• With tools 、 Code , Simulate the client to send a request to the server , Automatically judge with assertions Expected and actual results Is it consistent ！