Regular Expression in Performance Testing

Regular Expression in Performance Testing

Regular Expression is the most effective way to handle dynamic response in performance testing.

As we know regular expression is pattern based mathematical calculation.

Regular expressions or regex or regexp are extremely useful in extracting information from any text by searching for one or more matches of a specific search pattern

Regular expressions, as a concept, was founded by Stephen Kleene, best known as the founder of the piece of mathematical logic known as recursion theory

How to learn about RegEx ?

With RegEx, we don’t really understand them until we use them, and we can’t really use them until we understand them. So, we must learn a little bit, and then use a little bit and get them wrong, and then go back to the concepts and learn a little bit more.

In layman’s language, Regular Expression is a pattern which is used to specify a set of strings required for getting dynamic value. To prepare a regular expression, it is important to learn how we can create it using metacharacter and literal character.

Just a tip, The most important and frequently used Reg-Ex for Performance testing is (.+?)

What is literal character

The most basic regular expression consists of a single literal character, such as a. It matches the first occurrence of that character in the string.

What is metacharacter

Metacharacters are the building blocks of regular expressions using combination of various symbols

Below table will help you to understand how reg-ex can be created.

Happy Testing!!!

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