Creating first test case using Jmeter? – User friendly Tech help

Scenario:- How to create a basic level test case(its called test plan) in jmeter?
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Prerequisites:-
n1.Test plan :- Container for running the tests. Its the starting point, by default jmeter opens up with test plan.
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n2.Users(called as Thread Group in JMeter) :- How many users should be involved in sending the request to the server, how often, and ramp up time.
nWhy this ? it mimics the interaction of real users with the application at given time.
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n3.Task( what type of request that needs to be send to server, called as Samplers):-For example if we want to access the google.com we are sending http request thus we need a particular type of sampler called http request sampler. If we are sending request to database we make use of jdbc sampler.
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nNote:- JMeter sends request to server based on the order they appear in the tree.
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n4.Assertions:– Verify the response send by server, comparing the actual value with expected value.
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n5.Report(called as Listeners in JMeter):- Request is send to server how to report the results for the response, we use Listeners for this.
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WORKING CODE

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nSolution:- Lets create a pipeline for the above steps, 
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ThreadGroup (We created users) > Samplers (users send request to server) > Assertions (Verify the response for the request) > Listeners (Report the response results as graphs, table and so on).
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nStep1:–Launch jmeter 
nStep2:-Add thread group 
nNote:- We have renamed the test plan in our example below.
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Right click Test Plan > Add > Thread(Users) > Thread Group
nRename Thread group to something logical.
nChange the thread properties like number of users.
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nStep3:-Add sampler 
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Right click Thread Group > Add > Sampler > HTTP Request 
nRename it something logical
nDefine user defined variables for a test plan (FirstTestCaseJMeter) .

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• Open test plan

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• click on Add

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• Enter name and value

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Why this as it add to maintainability of application url at one place.

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Add APP variable into the Sampler “Server Name” like ${APP}(this is how we use variable value in jmeter ${variableName}

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Select the method as “GET”

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Note:-Incase we need to pass any parameters or body elements we can do it here.
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nStep4:-Assertions (say to check 200 status code)
nRight click Thread Group > Add > Assertions > Response Assertion
nSelect ReponseCode  and Equals, put value as 200 
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nStep5:-Listeners (Report the run results)
nRight click Thread Group > Add > Listener > View Result Tree
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Step6:-Run the test plan
nBefore running we need to save the .jmx file
nWays to run :-

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• Run > Start

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• Ctrl + r

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• Green play button on the menu bar

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Step7:-Check the run results
nSelect View Result Tree
nIts green, means our assertion is successful and we got the response back 🙂
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nSo we successfully created the basic test plan in jmeter. To explore more change the listener type, add more users and add different type of assertions.
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nLearn more and share more.
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