Postman assertion

Postman Introduction to assertions

• postman Assertion aid JavaScript - js Language code , Automatically judge whether the expected results are consistent with the actual results .
• Assertion The code is written in Tests Label .

Postman Common assertions

1. Assertion response status code

Status code: Code is 200

1. stay Tests In the label , Choose Status Code：code is 200, Generate corresponding code
2. To adjust properly test() Method parameter 1, and In anonymous functions Expected results .
3. Click on send Button , Send a request , Execute assertion code .
4. Look at the assertion results .

//  Assertion response status code   Is it  200
pm.test("Status code is 200", function () {
    
    pm.response.to.have.status(200);
});

pm： representative  postman  An example of 
test()： yes  pm An example of a method . There are two parameters 
	 Parameters 1： After the assertion is successful , Give a text prompt . You can modify ."Status code is 200"
	 Parameters 2： Anonymous functions .
pm.response.to.have.status(200); 
//  Meaning ：postman  The response result should contain the status code  200
		200 ——>  Expected results ！

2. Assert whether the response body contains a string

Response body: Contains string

//  The assertion response body contains the specified string 
pm.test("Body matches string", function () {
    
    pm.expect(pm.response.text()).to.include("string_you_want_to_search");
});

pm：postman An example of 
test(): postman Example method , There are two parameters 
	 ginseng 1： Text prompt message displayed after assertion , It can be changed .
     ginseng 2： Anonymous functions 
pm.expect(pm.response.text()).to.include("string_you_want_to_search"); 
//  Meaning ：pm  expect   The response text   in , contain  xxxx  character string .
	"string_you_want_to_search" ——>  Expected results .  You can modify 

3. Assert whether the response body is equal to a string （ object ）

Response body: Is equal to a string

//  Assertion   Response body   Equal to a string （ object ）
pm.test("Body is correct", function () {
    
    pm.response.to.have.body("response_body_string");
});

pm.response.to.have.body("response_body_string");

//  intend ,pm  Of   There should be... In the response   Response body  xxx
"response_body_string" ——>  Expected results .  You can modify 

4. Assertion JSON data

Response body: JSON value check

//  Assertion json Response result of 
pm.test("Your test name", function () {
    
    var jsonData = pm.response.json();
    pm.expect(jsonData.value).to.eql(100);
});
var jsonData = pm.response.json();
// var jsonData：  use js Syntax defines a variable .jsonData  It's the variable name 
// pm.response.json();  On behalf of the response json result 

/*  give an example ：response.json(); { "success": true, "code": 10000, "message": " Successful operation ！", "data": "95c78d75-721c-40fb-b2d5-742fea42cbd5" } */
pm.expect(jsonData.value).to.eql(100);
//  Meaning ：pm  expect  json result  key Corresponding value   be equal to  xxx
// to.eql(100);  Medium  100  Represents the expected result . Modifiable .

/*  give an example ： jsonData.value  Of  value：  take  ：success、code、message、data */

Example ：

//  Assertion json Response result of -success The value of is true
pm.test(" Assertion response result success The value of is true", function () {
    
    var jsonData = pm.response.json();
    pm.expect(jsonData.success).to.eql(true);
});

pm.test(" In the assertion response result code The value of is 10000", function () {
    
    var jsonData = pm.response.json();
    pm.expect(jsonData.code).to.eql(10000);
});

pm.test(" In the assertion response result message The value of is   Successful operation ", function () {
    
    var jsonData = pm.response.json();
    pm.expect(jsonData.message).to.eql(" Successful operation ！");
});

5. Assertion response header

Response headers: Content-Type header check

//  Assertion response header 
pm.test("Content-Type is present", function () {
    
    pm.response.to.have.header("Content-Type");
});

pm.response.to.have.header("Content-Type");
// pm  Response   The head contains  Content-Type

//  Example ： Can be in  header  in , add to   In the response header  key  Corresponding  value  determine . use  , Partition .
//  Assertion response header 
pm.test("Content-Type is present", function () {
    
    pm.response.to.have.header("Content-Type", "application/json;charset=UTF-8");
});

Postman How assertions work