Equivalence Class Partition
Quality,  Software Testing

Equivalence Class Partition

The Equivalence Class Partition (ECP) technique is a Test Case Design Technique which uses special types of Test scenarios, through this we can write more effective Test Cases like:

  • Whenever we have special requirements like the Username or Password should accept characters like A to Z, a to z, 0 to 9, special characters like ()@$ or minimum Eight characters.
  • At the same time, the application should not accept the special characters like <>/\-+_ or should not be more than 15 characters.
  • Username should not contain space or should be between 6 to 12 characters.

In the above type of scenarios exhaustive testing is not possible, so we have to follow the ECP technique.

  • In this technique, we have to divide the Test Data into two classes. One with Valid data and second with Invalid data.
  • For Positive testing, test the application with Valid data where it should be accepted.
  • For Negative testing, test the application with Invalid data where it should not be accepted.
  • If it is working as expected then we can conclude that it is accepting only Valid characters.

For Example:

Equivalence Class Partition


Please click here to read Boundary Value Analysis


  • Smithb76

    Fantastic website. A lot of useful information here. I’m sending it to a few pals ans also sharing in delicious. And naturally, thank you in your sweat! ddefacagkfcfeddf

  • Smithd366

    Hi, Neat post. There’s a problem with your website in internet explorer, would test this IE still is the market leader and a good portion of people will miss your great writing due to this problem. daekbcffbcfekekg

  • Ganesh

    myTectra offers corporate training services in Bangalore for range of courses on various domain including Information Technology, Digital Marketing and Business courses like Financial Accounting, Human Resource Management, Health and Safety, Soft Skill Development, Quality & Auditing, Food Safety & Hygiene. myTectra is one of the leading corporate training companies in bangalore offers training on more than 500+ courses

Leave a Reply

Your email address will not be published. Required fields are marked *