What is super class sub class in error ,bug , defect, failure , fault?

I think Super Class , Subclass are written by the testor to prepare a testing framework for the given program. It is here in case you are curious about the implementation of the framework, or you need to modify it in any way.

When you talk to a tester, the smallest unit of testing they talk about is a test case. TestCase is a User’s Object, representing a single test case.

Class: TestCase

superclass: Object

For an example

This distinction is represented in the framework by giving each TestCase a Pluggable Selector. The variable behavior invoked by the selector is the test code. All instances of the same class share the same fixture.

Class: TestCase
superclass: Object
instance variables: selector
class variable: FailedCheckSignal

there are lot of functionality involved in this method of framework. I have just given the sample work about this. Hope you can understand the concept of the superclass and sub class test case.

thanks

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Karpagarajan. R
Necessity is the mother of invention