Jmeter : Important elements

 Jmeter : Important elements

https://drive.google.com/file/d/0Bw7unBxciTUFbGVjMUZWWlpDYzg/edit?usp=sharing

Jmeter :To extract the response of an HTTP Sampler into a variable for later use

To extract the response of an HTTP Sampler into a variable for later use

To add regular expression extractor element to a test plan in JMeter:

1.   Right click the sampler element (request to the server from which the value needs to be extracted)

2. Select Add option à Post Processors à Regular expression extractor

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Extracting Single string from the response

Consider an example, where a user Date displayed in a webpage Ex: Date:xxxxxxx

In order to extract the username, below R.E can be used:    

Reference Name:                   Date

Regular Expression:               Date\:(.+?)             

Template:                                 $1$

Match No. (0 for Random):    1

Default Value:                          match not found

Note:The special characters above mean:

(  ) encloses the portion of the match string to be returned

. ->  match for any character.    +  è one or more times.

?  stop when first match is found 

Without the ?, the .+ would continue until it finds the last possible match.

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Extracting Multiple Strings from the response

Consider a scenario where the user wants to extract Date and Time.
(Ex:Date:xxxxxx Time:xxxxxxx) To extract both the ids, the below R.E can be used

                       Reference Name:                    Date_time

                       Regular Expression:    Date\: (.+?) Time\:(.+?)

                      Template:                                $1$$2$

                      Match No. (0 for Random):    1

                      Default Value:            match not found

Since we need to extract two values from the response, two groups are created. So the template has $1$$2$. The JMeter Regex Extractor saves the values of the groups in additional variables.

The following variables would be set as:

    Date_time-> xxxxxzzzz

    Date_time _g0 ->  Date:xxxx time:zzzz

    Date_time _g1 -> xxxx

    Date_time _g2 ->  zzzz

These variables can be later referred in the JMeter test plan, as ${Date_time _g1}, ${Date_time _g2}.

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Extracting only numbers from the String

Consider a case where we need to only extract the numbers, for example price=100$

To extract 100, the below R.E can be used

                      Reference Name:                    price

                      Regular Expression:    price= “(.+?)$”

                      Template:                                $1$

                      Match No. (0 for Random):    1

                      Default Value:            match not found

Jmeter : Easy Configuration

Jmeter : Easy Configuration

Open Jmeter :

1. Make sure Jmeter is downloaded and JDK is configured in your system(Follow the link below:
   https://drive.google.com/file/d/0Bw7unBxciTUFanlBQWlORnZWcEE/edit?usp=sharing)
2. Goto folder where Jmeter is extracted. > Bin .
3. Double click on Jmeterw.cmd (for windows ) , jmeter.sh (for Linux) 
4. Optional : terminal > sh jmeter.sh

REST applications :

1. Rt Click on Testplan > Add---> Thread Users ---> Thread Group.
2. Thread Group >
1. rt ck >Add >  Sampler> http request 
1. name: any name
2. Server : endpoint only
3. port : port only
4. request type : Eg- POST
5. path : resource
6. body Data: json
2. rt ck > Add > Config > http Header Manager
1. Add
2. Name=Contenty-Type , Value= application/json
3. rt ck > Add > Assertions >  Response Assertions
1. Fields to Test = Response Code
2. Patterns to Test > Add > 200
4. rt ck > Add > Listener
1. Summary Report >filename > path/summary.csv 
2. Results Table >filename >  path/table.csv
3. Results Tree
4. Response Time 
5. Aggregate Time >filename >  path/aggregate.csv
3. Run the setup
1. summary report , aggregate Graph  > ck on Save Table Data button
4. You can also co to thread group add 
1. Change Number of Threads
2. Rampup period [Optional]

Performance parameters :

• Results Table

1. ThreadName = loopnumber - ThreadNumber
2. Label :Request Name
3. Sample Time : Request+Response
4. Status : Assertions Pass or Fail
5. Bytes : Bytes Received by Jmeter
6. Sent Bytes : Bytes Sent To server
7. Latency : Time Jmeter needs to wait after sending request till the response is received

• Aggregate Graph

1. Samples : Number for Requests 
2. Averge : Average time request+Response
3. Median
4. 90% Line : Req + Response time for 90% of samples
5. 95 % line : Req + Response time for 95% of samples
6. 99% line : Req + Response time for 99% of samples
7. Min : least Req+Response time 
8. Max : highest Req+Response time 
9. Error : Assertion Fails
10. Throughput : number for requests made per second  by Jmeter

Performance Testing for UI testing Applications : 

Once Jmeter is opened 

1. Rt Click on Testplan > Add---> Thread Users ---> Thread Group.
2. Rt Click on Thread Group > Add --- > Logic Controller ---- >click on recording Controller
3. Rt Click on Thread Group > Add --- >Config Controller --- >click on Http Cookie Manager
4. Rt Click on Thread Group > Add --- >Config Controller --- >click on Http Request Defaults 
5. Rt Click On work bench > Add --- > Non test Elemenets --- > click on  Http Test Script Recorder. 
6.  Http Test Script Recorder >Port ="8080"

1. Click On Http Request Defaults >Server name "http://in.yahoo.com/"
2. Click on  Http Test Script Recorder > Https Domain "http://in.yahoo.com/"
1. Http Sample Settings >Type > HttpClient4
2. Url pattern to exclude > Click on add suggested excluded

1. Open FireFox Browser.
2. Goto Tools >options >Advanced >network>Click on Settings .
3. Select Manual Configuration : Http Proxy ="localhost"    and port="8080"
4. Click on OK

Now the Jmeter and Browser is Configured 

1. Open Jmeter> Goto Https Test Script Recorder >Click on Start button.
2. Open FireFox.
3. Paste URL "http://in.yahoo.com/"
4. Do any operations on the webpage .

You will see the transaction getting recorded.

Note :
While playing the recorded script make sure you add a "View Results Tree" Element to your Testplan not to your workbench.

If you do not see any recording please see the detail installation below :

https://drive.google.com/file/d/0Bw7unBxciTUFanlBQWlORnZWcEE/edit?usp=sharing