A sanity test or sanity check is a basic test to quickly evaluate the validity of a claim or calculation. In mathematics, for example, when multiplying by three or nine, verifying that the sum of digits, in the result, is a multiple of 3 or 9 (casting out nines), respectively, is a sanity test.

In computer science, a sanity test is a very brief run-through of the functionality of a computer program, system, calculation, or other analysis, to assure that the system or methodology works as expected, often prior to a more exhaustive round of testing.

Despite of hundreds of web articles on Smoke and sanity testing, many people still have confusion between these terms and keep on asking to me. Here is a simple and understandable difference that can clear your confusion between smoke testing and sanity testing.











Here are the differences you can see:

■	Load Testing
■	Stress Testing
■	Domain Testing
■	Exploratory Testing
■	Recovery Testing
■	User Acceptance Testing
■	Alpha Testing
■	Beta Testing
■	Unit Testing
■	Static & Dynamic Analysis Testing
■	Functional Testing
■	Ad-hoc Testing
■	Volume Testing

Sanity Testing

■	Load Testing
■	Stress Testing
■	Domain Testing
■	Exploratory Testing
■	Recovery Testing
■	User Acceptance Testing
■	Alpha Testing
■	Beta Testing
■	Unit Testing
■	Static & Dynamic Analysis Testing
■	Functional Testing
■	Ad-hoc Testing
■	Volume Testing

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