How to Convert Your Postman API Tests into JMeter Tests?

Introduction:

Postman is a stupendous API testing tool. Using it a tester can easily test and measure the performance of various web services and APIs. Overall, it is a spectacular API testing tool and comes with lots of robust features too. But the tool also has certain testing limitations. This is the main reason why QA engineers prefer to use Postman along with JMeter. The tool allows QA engineers to gain access to more load testing abilities and test web services or APIs more efficiently. Keeping this in mind, today, we are going to teach you how you can convert your Postman tests into JMeter tests.

Features of JMeter:

Following are the key features of the JMeter tool:

• It is free to use load testing tool.
• The tool features a user-friendly and intuitive GUI.
• You can use the tool for both load testing and performance testing.
• The testing tool is platform-independent.
• You can use the tool for the automation/functional testing of an app.
• The tool allows concurrent/simultaneous sampling of various functions.
• The tool is highly extensible and stores test plans in XML format, etc.

Here’s how you can convert your Postman API tests to JMeter tests to test your APIs more efficiently.

What Are the Steps That You Can Follow to Convert Your Postman API Tests to Jmeter Tests?

Following are the steps that you can follow to convert your API tests to JMeter tests:

1. Navigate to the main menu of JMeter.
2. Next, click on the “File” option then navigate to “Templates”> “Recording.”
3. Now hit on the “Create” option to continue.
4. Next, choose the “HTTP(S) Test Script Recorder” option.
5. After that, click on the “Start” button.
6. Now you have to supply your API host to JMeter that it will put under the “HTTP Request Defaults.” For this article, we are going to use the official website of JMeter “(https://jmeter.apache.org/).”
7. Next, you have to import your JMeter certificate into the Postman tool. When a tester launches the “HTTP(S) Test Script Recorder” it generates a self-signed certificate. This certificate enables JMeter to easily decrypt HTTPS requests. The name of the certificate is “ApacheJMeterTemporaryRootCA.crt” and you can find it in the “bin” folder of your JMeter tool/installation. To import the certificate, navigate to your Postman installation.
8. Next, navigate to the Postman settings.
9. Now tap on the “Certificates” tab.
10. Next, enable the “CA certificates” option by tapping on the orange toggle button near it.
11. After that, you have to locate the certificate file or “ApacheJMETERTemporaryRootCA.crt” file.
12. Now the tool will use the certificate as well as the “JMeter” tool and will be able to easily decrypt all captured requests. To learn more about capturing requests, feel free to enroll yourself in the Postman Online Course.
13. Next, you have to configure the tool for using the “JMeter” tool as a proxy or in other words tell it to send a request using “HTTP(S) Test Script Recorder.” To do this, go to the settings of the Postman tool.
14. Now tap on the “Proxy” tab.
15. Next, navigate to the “Proxy configurations” section and select the “Add a custom proxy configuration” option.
16. Now select both “HTTP” and “HTTPS” options that are present under the “Add a custom proxy configuration” section.
17. Next, type “localhost” in the “Proxy server” field. However, if you are running JMeter on a different host then type its IP address or DNS hostname in the “Proxy server” field.
18. After that, type “8888” in the “Proxy port” field.
19. Now when you will start your request/collection the JMeter tool will capture it and will generate an “HTTP Request sampler” for the request. If there are HTTP headers, then the JMeter tool will add an “HTTP Header Manager” for adding headers into the request.

Conclusion:

Converting your Postman API tests to JMeter tests is not that difficult as you may think. With the right set of instructions and patience, you can easily convert your tests without any difficulty. So, do follow all the above instructions properly, if you are struggling to convert your Postman tests into JMeter tests. However, if you wish to learn about both the API testing tools in more detail then you can join the Postman Training in Noida.