In a previous article, I introduced the open-source test tool JMeter and used a simple HTTP test as an example to demonstrate its capabilities. This article shows you how to build test scripts for complex test scenarios.
The user interface displays a JMeter test script in the "tree" format. The saved test script (in the .jmxformat) is XML. The JMeter script tree treats a test plan as the root node, and the test plan includes all test components. In the test plan, you can configure user-defined variables called by components throughout the entire test plan. Variables can also thread group behavior, library files used in the test, and so on. You can build rich test scenarios using various test components in the test plan.