Do you know several assertion methods commonly used by JMeter?

In the use of Jmeter Conduct performance test or interface automation test , A function often used , It's an assertion . Assertion is to add a layer of judgment mechanism at the return level of the request . Because the request was successful , It doesn't mean the results are right , Therefore, we need a judgment mechanism to improve the accuracy of testing . this paper This paper mainly introduces 3 Common assertions ： Response assertion 、JSON Assertion 、 Assertion duration .

►►► One 、 Response assertion （Response Assertion）

Response assertion is the most commonly used assertion method , It mainly asserts the text content in the response result , For example, whether the response result contains the specified value , Or whether it is equal to the specified value . Response assertions can be applied to response results of various return types , Such as Test、html、application/json、application/xml etc. .

1 Case study

Send a request ：

https://lemon.ke.qq.com/?tuin=203e4d43

– Official website interface

Assertion checking ： Check whether the response result contains “ Lemon class software testing ” Text content of

2 Operation steps

The first 1 Step ： Add thread group

The first 2 Step ： add to HTTP request

The first 3 Step ： stay HTTP Add response assertion under request

The first 4 Step ： Add assertion results and add view result tree

The first 5 Step ： After running the interface , Look at the assertion result and look at the result tree

►►► Two 、JSON Assertion

JSON Assertion is also an assertion method often used in testing , It is generally used to assert whether a field value is equal to the value we specify . therefore JSON Assertions can only be made against responses that result in applicaton/json Assert in the format . If it's another type （ Such as ：Test、html）, You cannot use this method .

1 Case study

Send a request ：

http://47.115.15.198:7001/smarthome/user/login

– Login interface

Assertion checking ： Check the data in the response ,user_name Whether the content corresponding to the node is "lemonn"

2 Operation steps

The first 1 Step ： Add thread group

The first 2 Step ： add to HTTP request

The first 3 Step ： stay HTTP Add response assertion under request

The first 4 Step ： Add assertion results and add view result tree

The first 5 Step ： After running the interface , Look at the assertion result and look at the result tree

►►► 3、 ... and 、 Assertion duration

（Duration Assertion）

Assertion duration is usually used for performance testing , Generally used to check HTTP Whether the response time of the request exceeds the expected value . And this response time is a performance index that is often concerned in performance testing .

1 Case study

Send a request ：https://www.baidu.com/

– Baidu official website interface

Assertion checking ： Check that the response time is less than 200ms

2 Operation steps

The first 1 Step ： Add thread group

The first 2 Step ： add to HTTP request

The first 3 Step ： stay HTTP Add response assertion under request

The first 4 Step ： Add assertion results and add view result tree

The first 5 Step ： After running the interface , Look at the assertion result and look at the result tree

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