Response Headers : This is used against Response Headers to see if a specific HTTP header is present or absent.Response Message : This verifies that the response message appears as expected.For 4xx and 5xx response codes, make sure you have checked the Ignore Status box (see below for a full explanation). Response Code : This checks to ensure the response code is expected.For example, you may want to check that the redirect URL does not contain an error somewhere in the path. URL Sampled: This assertion is used against a requested URL to ensure it matches expectations.Be careful, because this can be memory-intensive for high loads. This can include PDF, Office, audio, and video formats. Document (text): This is for anything supported by Apache Tika (it assumes the presence of apache-tika.jar in /lib folder of a JMeter installation).Text response: This is for the response that can be displayed in a browser.Response Entities that can be checked include : The most commonly used assertion is the Response Assertion, which checks whether a response text/body/code/message/header contains, matches, or equals a specified pattern.Ī “string” for “Equals” or “Substring” clausesĪ “Perl5-style” Regular Expression for “Contains” or “Matches” clause.Failed assertions will cause all affected samples to fail, so caution is essential.Ĭommonly Used Assertions & Their Uses in JMeter You can add more than one assertion to the sampler, controller, thread group, or test plan. This means you must manually implement all assertion logic – including scope. Code-based assertions (such as Beanshell, BSF, and JSR223) don’t have the GUI element that identifies scope.Some assertions, like the Response Assertion or the Size Assertion, can also be used against a JMeter Variable.Assertions can be applied to the main sample and its subsamples, or only to subsamples.You must also consider the scope when setting assertions.Whereas Compare Assertion and other XML-based ones like the XPath Assertion consume more CPU and memory.According to the JMeter Performance and Tuning Tips guide, the Response Assertion and the Duration Assertion are typically lower-impact choices.However, some assertions carry a greater cost than others. All assertions come with a cost, in terms of CPU or memory consumption.The Assertion is the process of comparing the expected result with actual resultĬonsiderations Before Setting Assertions in JMeter The Cost of JMeter Assertions: ![]() If you need to apply assertion on a particular Sampler, then add it as a child of that Sampler. ![]() The assertion is a process where you verify the expected result with the actual result of the request at run time. The assertion in JMeter is used to validate the response of the request, that you have sent to the server. ![]() Testing RESTful Web Services -14 - assertNotNull, assertEquals, assertTrue
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