Error inference method of black box testing

What's wrong inference?

Experienced testers can often speculate on the possible errors of sequencing according to their own work experience and intuition, so as to conduct targeted testing.

Three elements: experience, knowledge, intuition.

How do you use error inference?

1. List the errors that may occur in the program and the special circumstances that are prone to errors;

2. Select test cases according to them.

The advantages of the false inference method:

---Give full play to human intuition and experience

---brainstorming

---Easy to use

---Quick and easy cut

Disadvantages of the false assumption method:

---Difficult to know test coverage

---A large number of unknown areas may be lost

---subjective and difficult to replicate

Usage:

1. Use other methods to design test cases first;

2. Use error inference to supplement use cases.

This method is generally only to a certain level can be, primary we still learn it!!!