Sanity and Smoke testings are very basic leavel testing in 
STLC,this testing is also know as TAT(Tester Acceptance 
Test).

Sanity Test:- Testing the Project/Product for cheacking 
weather the project/Product is able to test the basic 
functionality of the application or not.
Ex:-If the project is on google Search,first we have to 
check weather the search box,submit button is present in 
the application or not.

Smoke testing: Testing overall application to check all the 
main functionalityes are present in the application or 
not,If present they are stayable enough to test or not.


Correct me if i am wrong..

M.V.K.Chaitanya Rao
mvkrishnachaitanya@gmail.com
9963907370

Chaitanya rao sir,  i didnt understand the Exact
Difference.can u explain me clearly?

Smoke Testing: This testing is detailed testing.It is 
conducted on the application to check whether all the 
functionalities are supposed to be present in the appl are 
really present or not.
 Also to check the functionalities are "NORMAL"

Sanity Testing: This is not detailed testing. This testing 
is done to check whether the appl is proper for testing or 
not.

Smoke Testing:this testing is conducting all funtionalities 
correctly working r not,should be present in the 
application r not.
sanity testing:this testing conducting the application 
properly working r not.

To my understanding: The objective of both these tests are 
almost same. The ends at which they are performed are 
different.

Smoke testing is done on the changed and existing code of 
application, before it is checked in to the Version control 
system and release marked to QA. Hence this is done at the 
Development end.

Sanity testing is done in the areas of new fixes given as 
well as existing functionality of the system - to assess 
whether a release can be accepted for QA. Hence this is 
done at the QA End.