One 、 jmeter The basic composition of the script

In pressure measurement , The composition of a basic script , Need two parts .

• Sampler （ Such as http request ）
• Assertion

In the course of debugging , You can add a result tree , In the actual pressure measurement process , need Kill the fruit tree .

In the course of debugging , You can add aggregate reports , In the actual pressure measurement process , You can not add an aggregation report .

Because we are executing the run script command ,

sh jmeter -n -t /Users/a57/ The weather .jmx -l /Users/a57/3.jtl -e -o /Users/a58/cs2/

Will automatically generate a format of jtl Aggregate report for .

Add or not add , Little impact on performance .

Any component , Will affect performance , We should use as few components as possible .

Two 、 Response assertion

Add response assertion

Right click http request -》 add to -〉 Assertion -》 Response assertion .

There are many kinds of assertions , Generally, response assertion is enough .

  Scope Apply to:

1、 Main request and sub request

2、 The Lord asked

3、 Sub request

4、 Customize

The default selection is 2 The Lord asked Main sample only.

The location of the assertion ：

  It is generally configured in the response text .（ Generally, the response code is not set as an assertion , Because the response code 200 It only means that the request is sent and received normally , It does not mean that the business logic of this interface is normal ）

Matching mode ：

General choices include . 

Add assertion content ：

  You can add multiple assertions .

After adding assertions , Execute the script , View the result tree , If you are not reminded to report an error , That is the result of assertion , Only when the assertion fails , There will be a hint .

2.1 Be careful ：

Not every interface needs assertions , Because assertion processing , It will consume the performance of our press .

We can use other means , Instead of adding assertions , Determine whether the interface is successfully executed .

Type 1 ： Write to database / Insert /update/ Deleted interface

test plan , Write 10000 pieces of data to the database . We can go to the database , Check how many entries are actually written , The success rate is obtained by comparison .

General success rate requirements 99%, The more strict requirement is that the success rate is 99.9%.

There is no need to view data in real time / Comparative data . After executing the script , Just look at the data in a unified way .

Query interface , You can only add assertions .