Interface test learning notes

1. What is an interface ？

The types of interfaces are divided into internal interfaces 、 External interface , The internal interface is divided into upper layer service and lower layer service 、 Peer service

2. What is interface testing ？

Interface testing is based on http Interface test of protocol . In addition to based on http Interface to protocol , There are interfaces based on other protocols , Its essence is to send a http Request message to server , Then the server returns a http response message .

3. The common interfaces are GET、POST、DELETE、PUT Four kinds of , among GET and POST difference ：

1. Parameter submission methods are different ,GET Parameters are submitted in the address bar , With ？ Separate URL And transmit data , Between parameters & Connected to a , Restriction on 2048 character ;POST Parameters are submitted in webform surface , And there are no restrictions
2. The size limit of submitted data is different ,GET Submitted data is small ,POST Submit big data
3. Different security ,GET Poor safety ,POST It's safe

4. Interface test process

5. Design interface test cases

1. Whether the function is normal
Whether the function is implemented according to the interface document （ Parameters ）
2. Logic
Whether it depends on the business
3. abnormal ： Parameter exception / Data exception
Parameter exception ： Keyword parameter error 、 The parameter is empty. 、 More or less parameters 、 bad parameter
Data exception ： Keyword data error 、 Data is empty 、 The length is not the same 、 Wrong data

6. Common interface test tools

Caught tools ：Fiddler、Firebug、HTTP Analyzer
Contracting tools ： Open source tools ：jmeter、postman, Business tools ：loadrunner、soapui

To be continued ....