How many assertion methods are commonly used in JMeter?

• A feature that is often used in performance testing or interface automation testing using Jmeter is assertion.Assertion is to add a layer of judgment mechanism to the return level of the request.Because the request is successful, it does not mean that the result is necessarily correct, so a judgment mechanism is needed to improve the accuracy of the test.This article mainly introduces three commonly used assertions: response assertion, JSON assertion, and assertion duration.

1. Response Assertion

• Response assertion is the most commonly used assertion method. It mainly asserts the text content in the response result, such as whether the response result contains the specified value, or whether it is equal to the specified value.Response assertions can be applied to response results of various return types, such as Test, html, application/json, application/xml, etc.

1: Case

Send request:

Assertion Check: Check whether the response result contains the text content of "Lemon Class Software Test"

2: Operation steps

• Step 1: Add a thread group

• Step 2: Add HTTP Request

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• Step 3: Add response assertion under HTTP request

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• Step 4: Add Assertion Results and Add View Results Tree

• Step 5: After running the interface, view the assertion result and view the result tree

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Second, JSON assertion

• JSON assertion is also an assertion method often used in testing work. It is generally used to assert whether a field value is equal to the value we specify.Therefore, JSON assertion can only be asserted for the response result in applicaton/json format.If it is other types (such as: Test, html), this method cannot be used.

1: Case

Send request: http://47.115.15.198:7001/smarthome/login --login interface

Assertion check: Check whether the content corresponding to the user_name node in the response data is "lemonn"

2: Operation steps

• Step 1: Add a thread group

• Step 2: Add HTTP Request

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• Step 3: Add response assertion under HTTP request

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• Step 4: Add Assertion Results and Add View Results Tree

• Step 5: After running the interface, view the assertion result and view the result tree

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Three. Duration Assertion

• Assertion duration is usually used for performance testing, generally used to check whether the response time of HTTP requests exceeds the expected value.And this response time is a performance indicator that is often concerned in performance testing.

1: Case

Send request: https://www.baidu.com/ --Baidu official website interface

Assertion Check: Check if the response time is less than 200ms

2: Procedure

• Step 1: Add a thread group

• Step 2: Add HTTP Request

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• Step 3: Add response assertion under HTTP request

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• Step 4: Add Assertion Results and Add View Results Tree

• Step 5: After running the interface, view the assertion result and view the result tree

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Jmeter's assertion method, do you know it?Below is some test data, free to share

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