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What is an interface

1、 software interface , It is the interface between people and software , It also refers to the narrow sense of software itself “ Interface ”.

2、 The interface between people and software is called “ The user interface ”, That is to say “UI”.

3、 The interface between different parts of the software . It's usually called API, Application programming interface , It is expressed in the form of source code .API The invention and development of have greatly promoted the progress of the computer industry , meanwhile API It determines almost all aspects of daily Computing .

4、 Most programmers adhere to the idea of designing excellent user interfaces for software users , This has long been deeply rooted in the hearts of the people . But , On the other hand , How to realize reasonable software API But only a few people pay attention to . History proves , All successful software or Web All applications are first in API The design meets the needs of users , Even if these users almost never use these directly API.

Interface classification

External interface

Interface provided externally （ Interfaces provided to third parties )

for example ： We develop our own system call to call wechat or Alipay payment interface , The interface that wechat or Alipay allows us to call is an external interface , External interfaces need to cover various normal and abnormal conditions .

Internal interface

Interface provided for own system （ Interface for internal system call ）

Usually in order to intervene in the test as soon as possible , Therefore, after the general interface development is completed, the tester can conduct internal interface testing . Generally, large companies may have higher requirements , Security needs to be considered , Then the internal interface test must also be tested . For small companies, internal interfaces are not tested , Directly in UI Layer test . The reason for this is to prevent attackers from directly attacking the interface by bypassing the verification of the front end , Then the verification of the back-end interface is also essential .

The house needs to be built layer by layer , Knowledge needs to be learned at one point one . We should lay a good foundation in the process of learning , More hands-on practice , Don't talk much , The last dry goods here ！ I stayed up late to sort out the stages ( function 、 Interface 、 automation 、 performance 、 Test open ) Skills learning materials + Practical explanation , Very suitable for studying in private , It's much more efficient than self-study , Share with you .

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