I. Introduction to interface functions

2. Postman daily operation

1. Use of global variables (Globals)

Description: Usually, the parts we use together can be stored in all variables, and only need {{variable name}}, applicable to all interfaces

For example: mobile phone number attribution and weather query

2. Use of environment variables (Environment variables)

Description: Different environments in the company, configure the data of different environments, only need {{variable name}} is enough, the interface applicable to the current environment, such as different domain names (different IPs within the company)

3. Interface association

1: Interface association method: json extractor

Implementation method: json extraction

// The return value is converted into a json objectvar jsondata=pm.response.json()console.log(jsondata)// extract value by json expressionvar doer = jsondata.result.cityconsole.log(doer)// set global variablepm.globals.set("cs", doer);

// Get the text content of the response bodyvar resbody = responseBody;console.log(resbody)// Convert to json objectvar jsonobj = JSON.parse(responseBody)// extract value by json expressionvar pro = jsonobj.result.provincepm.globals.set("prodes", pro);

Words:

Set the assertion on the first interface, get the content of the return body and convert it into a json object, extract the desired value through the json expression, set the value to a global variable, and use { in the second interface{variable name}} instead, implement interface association

4. Assertion

Description: Often used to compare expected and actual results

 Several ways for Tests to respond to assertions(1) Status code: code is 200 (check whether the response header contains a certain value)(2) response body:contains string (check whether the returned result contains a certain string)(3) response body: Json value check (check whether a field in the returned result is equal to a certain fieldvalue)(4) response header:content-type header check (check whether the response header contains a certain value)(5) response time is less than 200ms (check whether the response time is less than 200ms)(6) response body:Is equal to string (check whether the returned result is equal to the string) useless