Answer Posted / cody

Positive - Checking whether the application works according
to documentation or not.

Negative - Checking whether the application does what it
should not and does not when it should.

Positive and Negative Testing is a concept. Meaning this is
a way of thinking. They should not be associated with a
specific testing technique like equivalence partitioning.
They can be used within the technique but do not replace
the technique.

Requirement:
Employee can be contacted at work from 7:30am - 5:00pm

Let's use a truth table:
Start End Test Result
Test 1 - - -
Test 2 - + -
Test 3 + - -
Test 4 + + +

Test 1:
Start - Contact Employee at 7:29am (-)
End - Contact Employee at 5:01pm (-)

Test 2:
Start - Contact Employee at 7:28am (-)
End - Contact Employee at 4:59pm (+)

Test 3:
Start - Contact Employee at 7:30am (+)
End - Contact Employee at 5:02pm (-)

Test 4:
Start - Contact Employee at 7:31am (+)
End - Contact Employee at 5:00pm (+)

I have already identified which tests are negative using
the truth table. Only test 4 is a positive test. Why? Test
4 is the only test that has valid inputs verifying the
requirement is fulfilled. The other tests are derived from
the requirement but are invalid inputs.

Feel free to e-mail me any feedback.

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