Assertions in apache jmeter4/30/2023 ![]() JSON Path expression: This must be obvious □.We’ll use those value by using $ format during the test. Names of created variable: We need to define variable names for extracted values.Finally, we’ll make an assertion to the response with extracted values.įirst, we use JSON extractor component of Apache JMeter. Then we’ll search for this specific book. Our scenario is to fetch all books records, extract the id and title of a random book. So using JSON Extractors and JSON Assertions in one test would be a good fit for our need. You can use to learn JsonPath.ĭuring a performance test, our approach should be not only monitoring the performance of the application but also the integrity of the response data. In order to make a good JSON assertion, you need to know how to use JSONPath. You can measure response times, validate response code or response messages. We talked about response assertions in our SOAP service blog post. You can use the same approach as you used in SOAP web service test as there’s no difference between their usage. There are different options to make a validation. By using those assertions, you will be able to verify the stability of your application under heavy load. You can assert the response state or directly to the response data. That’s why performance or stress testing of that web service is crucial.īy following this tutorial, you will be able to validate how many concurrent users your application’s server-side component can handle.Īpache JMeter is strong when it comes to assertions. Nowadays many development teams are switching to restful APIs to simplify client and server communication. Web services that use REST architectural style, or RESTful web services, provide interoperability between any system on the internet. Here is a copy of the JMeter test plan with example API calls and response assertions with regex.Representational State Transfer (REST) is an architectural style that pre-defines a set of constraints to be used for creating web services. We wanted to put an assertion to confirm that response always have fields (marked bold) with different values depending upon each request and input parameters. For example, we get a response from weather API in below format depending upon the city parameter in api call. We can apply a regex assertion in a response to confirm the response has certain text/values available. XPath assertion: Tests a document for well-formedness, has the option of validating against a DTD, or putting the document through JTidy and testing for an XPathįor more documentation, refer to Example assertion to confirm response has value using RegEx.XML Schema assertion: allow the user to validate a response against an XML Schema.XML assertion: checks that the response data consists of a formally correct XML document.SMIME assertion: use to evaluate the sample results from the Mail Reader Sampler.Provides comparison operators like =,, != etc. Size assertion: allow the user to put a checkpoint on the size of the response.Response assertion: commonly used assertion which allows user to add pattern strings comparing against various fields of the response.BSF assertion: allow user to write BSF script to check various aspects of the SampleResult. ![]() ![]() MD5Hex assertion: Use to check the MD5 hash of the response data.JSR223 assertion: allow user to write JSR223 script to check the status of the request.HTML assertion: check the HTML syntax of the response data using JTidy.Duration assertion: check the response time of the request, if the request takes longer time than is specified in milliseconds then request will be marked as fail.Compare assertion: used to compare sample results within its scope.Bean shell assertion: allow the user to write their bean shell script to perform assertion.However the assertion must be carefully used because it consumes resources (memory or CPU). ![]() Apache JMeter provides a variety of assertions which are helpful to apply a few checkpoints with each request. ![]()
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