#Learn apache jmeter by example how to
#Learn apache jmeter by example manual
#Learn apache jmeter by example code

For example, we have shown how you can simulate some different types of responses so you can quickly build some assertions into your test. In each example, you can see how the dummy sampler can be used to quickly verify that your assertion acts as anticipated. To give you an idea of how the dummy sampler can be used, we have set up a repository with several sample JMeter scripts leveraging the dummy sampler. With the JMeter dummy sampler, you can instead simulate a response from your application and use that as the input to test whether your assertion is properly configured. Making sure your assertions are set up properly can be a tricky and time consuming process when using the real responses from your application. When clicking on the arrow to the right of the failing transaction, you’ll be able to see the exact request headers as well as the response sent back that was causing the error. Selecting the option for “main sample and sub-samples” will ensure an assertion is applied to the entire scope of that sample. Similarly, if applied to sub-samples only, it will not affect main samples. When applied to a main sample only, it will not affect sub-samples. Note that assertions are always processed after the sample is executed.Įven when the assertion is a child of a sample, there can be variation as to its scope. To apply the assertion to one sample only, add it as a child of the sample. Many of the most popular assertions listed in this tutorial (including size, duration, and response assertions) can be applied at various levels of scope.Īdding an assertion as a child of the Test Plan will cause the assertion to be applied after every sample in that test plan.

What scope should be used for JMeter assertions? If the response is invalid, the script can skip to the next sample or stop entirely, depending on the thread group configuration. depending on the configuration).įor example, asserting that a file matches a valid type can be a wise step before running other steps to process or extract a response. Since the assertions are executed in series, the failure of any one assertion can “trip the circuit” and cause the selected Thread Group behavior to trigger (stop the thread, stop the test, etc. It is possible and very common to use multiple assertions with each JMeter sampler to create a more powerful combination than any component can provide on its own.

#Learn apache jmeter by example code

Additionally, you can use the “Not” operator to make negative checks such as making sure the response code from the application is not equal to 400, 503, 504, etc.

With this flexible assertion, it’s easy to quickly validate if a service is returning the text desired (such as an order confirmation after the checkout process). It can look at the response from the application and ensure it matches simple patterns such as containing text, response codes, or response headers. The Response Assertion is one of the most commonly used assertions in the toolkit. In this tutorial we have focused on the 6 most common JMeter assertion types to highlight when to use these powerful test components. There are a variety of JMeter assertions available. What type of JMeter assertion should I use? The assertion validates that the response from the application is received as expected, but that response typically relies on the correct formulation of a previous request. JMeter assertions are a powerful tool, but their effectiveness is contingent on both the assertion criteria selected as well as the accuracy of the preceding request. expected results), they make sure the user is aware of any inconsistent or unexpected responses from the target application.

#Learn apache jmeter by example manual

Much like Selenium assertions or even manual testing assertions (i.e. JMeter assertions are the component of a test that allow a user to validate that the response JMeter receives matches expected criteria.

File Type Assertions (JSON Assertion, HTML Assertion, MD5Hex Assertion, XML Assertion).

#Learn apache jmeter by example how to

In this JMeter Tutorial, you will learn when and how to use the following common JMeter assertion types to improve the precision of your JMeter load tests: As each assertion is built to achieve a different outcome, it is an important step in each JMeter user’s evolution to understand the main types of assertions, including when and how to use them. To achieve this aim, JMeter comes out of the box with a variety of assertions at the disposal of the tester. A key to any good JMeter load test is the ability to assert that the response from the application fits any number of criteria the tester specifies.

JMeter is the most popular open source load testing tool on the planet, and one of the main reasons for its widespread adoption is its flexibility.