Diffrence in b/w Functional and System Testing and Test
Cases.

Answer Posted / vijay rao

Functional testing / component testing - testing each and
every component regoursly.

ex - If we take a login page in gmail.com, we test for
username field and password field by giving the
valid/expected/+ve data and as well as
invalid/unexpected/ -ve data


Integration testing - testing dataflow/integrity b/w 2
modules/features

ex - if we take a same gmail.com,say u loged in as A and
send a mail to B by giving all valid data in other fields
as per the SRS, now you click on send button,you should get
a conformation msg saying msg send successfully and chk in
sent items where that mail should reflect... now login as B
and chk whether you have recived a mail from A..
If everything is correct than integration test is
pass.. like this you can find many scenarios in just
COMPOSE button only, hope u got it.

system testing - it is nothing but end to end testing where
testing environment is just similar to that of prodcution
environment

here we dont concentrate much on either FT or IT, here we
test each business flow completely, ie we navigate through
all the features here.. if we take any task,we test that
from begining to end.

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