What is the diff. between Sanity , smoke and ad-hoc testing?

Answer Posted / suman v

Forum4:
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Smoke Sanity

1 Smoke testing originated in the hardware testing practice
of turning on a new piece of hardware for the first time and
considering it a success if it does not catch fire and
smoke. In software industry smoke testing is a shallow and
wide approach whereby all areas of the application without
getting into too deep is tested. A sanity test is a narrow
regression test that focuses on one or a few areas of
functionality. Sanity testing is usually narrow and deep.
2 A smoke test is scripted--either using a written set of
tests or an automated test A sanity test is usually unscripted.
3 A Smoke test is designed to touch every part of the
application in a cursory way. It's is shallow and wide. A
Sanity test is used to determine a small section of the
application is still working after a minor change.
4 Smoke testing will be conducted to ensure whether the most
crucial functions of a program work but not bothering with
finer details. (Such as build verification). Sanity testing
is a cursory testing; it is performed whenever a cursory
testing is sufficient to prove the application is
functioning according to specifications. This level of
testing is a subset of regression testing.
5 Smoke testing is normal health check up to a build of an
application before taking it to testing in depth. sanity
testing is to verify whether requirements are met or not
checking all features breadth-first.


Adhoc testing - testing done on main functionalities due to
lack of time. An adhoc testing is done by the person, who is
having application knowledge with out following testing rules...

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