TC1: Should be edit(check/uncheck)
TC2: Should allow multiply checks(like, when i have 2 or 
more checkbox,u should be able to check or uncheck all).

This is the minimum level of functionality testing. Please 
add if there are any more.

thank u kavita

FOR CHECKING:-
Description:
Click on the CheckBox
Actual Result:
The CheckBox should be checked with a Tick Mark, enabled 
into it.

FOR UNCHECKING:-
Description:
Click on the same CheckBox
Actual Result:
The CheckBox should be unchecked.

Thank u very much Rudraneel.i never thought  before about 
thess test cases.Hope u will  give your valueble  
suggestions in future too.

There are also another way of Testing is making the focus 
of the tab on the check box and click on Space bar, The 
check box should check and uncheck for each consequense 
click on space bar. This is GUI.

For Functional, if you check the check box and save or dose 
some operation (operation shd refresh the page), make sure 
the value of the corresponding field should be 1 in 
Database backend.

And other methods u can follow the answer of Kavita.

Thank u Satya