Essential points of Sampler Controller, Module Controller, Test Fragment, Include controller.

Sampler Controller and Module Controller

Context: You want to group sampler/requests together, easier to reuse and maintain again all your samplers.

We order our Samplers in a specify scenario such as:

• Sign-up / register
• Sign-in (Using again and repeatable)
• Flight Booking

Sampler Controller

• To group some sampler or requests into a simple controller.
• Easy to manage all requests / samplers in a feature or functions of an application.

Module Controller in JMeter

• Support us to control group of requests should be run before run other group of requests.
• Example: We should run some requests for accessing /home and /login before run some requests for adding items to carts, purchasing your order

Test Fragments

• Simmilar to Simple Controller, however it will be disable default.
• It is used to collect sample like a simple test controller.
• We can use modular to invoke samples in a test-fragment instead of using simple controller. It helps us easier to manage our sampler in our test plan.
• We can export a sampler as a Test Fragment and save as a JMeter file. Then, we can import a test fragment into a JMeter test plan. How to add a test fragment

Export a sampler as a Test Fragment file

Include controller

• We can use include controller to import any test fragment as a jmeter file

• It helps us to reuse the sampler from other test fragment.
• In a project, we can maitain all sampler in all test plans easily and effectively.

Reference lists

Here is the list of offical links from JMeter

• Sampler Controller: https://jmeter.apache.org/usermanual/component_reference.html#Simple_Controller
• Module Controller: https://jmeter.apache.org/usermanual/component_reference.html#Module_Controller