Error Guessing

What is Error Guessing?

This is a Test design technique where the experience of a tester is used to find the components of software where defects might be present.

It is mostly done by experienced tester's who can use their past experience to find defects in software.

Error guessing has no rules for testing, it only uses the tester's previous skills.

In error guessing tester's can think of situations where software will fail.
 

For example:

    1. Division by zero.
    2. Pressing submit button on form without filling any entries.
    3. Entering wring data in the fields and checking software behavior.