Chapter 4: Assertions & Logic Controllers

A test that only sends requests without validating the responses is incomplete. A 200 OK status does not necessarily mean that the response body is correct. Moreover, a test which sends requests in a flat sequence cannot model real user journeys that include loops, conditions, and transactions.

This chapter covers two essential element types:

• Assertions - verify that server responses meet your expectations.
• Logic Controllers - control the execution flow of Samplers within a Thread Group.

Let’s learn how to add custom pass/fail criteria to requests with Assertions.