Assertions in Jmeter

Assertions in very simple words is check on response.

we test the format of response and time took to the response . All these checks are called Assertions.

There are lots of assertions in JMeter -

1. Response Assertion- The response assertion lets you add pattern strings to be compared against various fields of the server response. We can check response code 200 then it should pass .

2. Duration Assertion- The Duration Assertion tests that each server response was received within a given amount of time. you see duration in milliseconds . Just compare with response.

3.Size Assertion- The Size Assertion tests that each server response contains the expected number of byte in it. You can specify that the size be equal to, greater than, less than, or not equal to a given number of bytes. Size comes in bytes.

4. HTML Assertion- We are checking the format of response .Is it html format or not? we can provide error Threshold and Warning threshold in our HTML assertion. We can log the errors in a file .It is useful if web application has third party app and they have to talk to each other , these issues can be resolved .

5. XML Assertion- IT is a check on Xml format.

6. XPath Assertion- It is useful with API . We can assert some xpath.