What is the Negative testing and how to write test case for Negative testing ?

Negative Testing mean to test the Application with Invalid Inputs. or Enter known data which is not as per valid input still test them.

Example: if any text box limit is 1-10 numeric, then enter into this text box alpha values, special symbols, below 1 & above 10.

Negative test case is writing testcases for the negative teating that is the system must not accept the values.

 

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