The most complete postman interface test tutorial in the whole network, API interface test

One 、 Why do interface tests ？

Because the work progress of different ends is different , Therefore, it is necessary to test the interface that comes out .

The benefits of doing interface testing ：

1、 Saving time , Reduce project costs

2、 Improve work efficiency

3、 Improve the robustness of the system  

Two 、 Necessity and significance of interface test

Interface testing is born to bring efficient defect detection and quality supervision capabilities to highly complex platforms , The more complex the platform , The bigger the system , The more effective the interface test is .

in general , Interface testing is the best solution to ensure the quality of high complexity systems and low-cost economic benefits , It is mainly reflected in the following three aspects ：

1、 Save testing costs

2、 Interface test is a comprehensive, efficient and continuous test of system interface from the perspective of users .

3、 When the complexity and volume of the system are larger , The lower the cost of interface testing , Corresponding , The higher the benefit output .

3、 ... and 、 Why choose Postman Do interface tests ？

Now ,Postman More developers than 1000 ten thousand ( From official website ), Choose to use Postman For the following reasons :

1、 Simple and easy to use -  To use Postman, You just need to log in to your account , As long as you install Postman Applications , You can easily access files anytime, anywhere .

2、 Use set - Postman Allow users to create for their API Call to create a collection . Each collection can create subfolders and multiple requests . This helps to organize the test structure .

3、 Multiplayer collaboration -  You can import or export collections and environments , So as to facilitate the sharing of files . Using links directly can also be used to share collections .

4、 Create an environment -  Creating multiple environments helps reduce test duplication (DEV/QA/STG/UAT/PROD), Because you can use the same set for different environments . This is where parameterization occurs , It will be introduced later .

5、 Create the test -  Test checkpoints ( Such as verification HTTP Whether the response status is successful ) Can be added to each API in call , This helps ensure test coverage .

6、 automated testing  -  By using sets Runner or Newman, You can run tests in multiple iterations , Saves time for repeated testing .

7、 debugging - Postman The console helps to check the retrieved data , So it is easy to debug and test .

8、 Continuous integration -  Through its ability to support continuous integration , Can maintain development practices .

Four 、 How to use Postman?

The picture below is Postman Working range of , The functions of some modules are introduced as follows ：

New	Create a new request here 、 Set or environment ; You can also create more advanced documents 、Mock Server and Monitor as well as API.
Import	This is used to import collections or environments . There are some options , For example, from a file , Folder import , Link or paste the original text .
Runner	Can pass Collection Runner Perform automated tests . Follow up .
Open New	Open a new label ,Postman Window or Runner window .
My Workspace	You can create new workspaces individually or as a team .
Invite	By inviting team members to work together in the workspace .
History	History of all requests , This makes it easy to track what you do .
Collections	Organize your test suite by creating collections . Each collection may have subfolders and multiple requests . Requests or folders can also be copied .
Request tab	This will display the title of the request you are processing . By default, for requests without a title “Untitled Request”.
HTTP Request	Clicking it will display a drop-down list of different requests , for example GET, POST, COPY, DELETE,
Request URL	Also known as endpoint , Show API Of URL.
Save	If changes are made to the request , You must click save, So that new changes are not lost or overwritten .
Params	Here you will write the parameters required for the request , such as Key - Value.
Authorization	In order to visit api, Appropriate authorization is required . It can be Username、Password、Token The form such as .
Headers	Request header information
Body	Request body information , Generally in POST Will be used in
Pre-request Script	Request before Execute the script first , Use the pre request script for setting up the environment to ensure that the test runs in the correct environment .
Tests	These scripts are executed during the request . Testing is very important , Because it sets checkpoints to verify that the response state is normal 、 Whether the retrieved data meets the expectations and other tests .
Settings	The latest version has settings , Not usually used .

postman Follow up use and technical points can see another article of mine ：

Interface test Postman Use the full guide ( The original use Postman test API The interface is so simple )