Определение sanity check в Английский Язык Английский Язык словарь
The act of checking that something does not contain elementary mistakes or impossibilities, or is not based on invalid assumptions
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 the digits of the result is a multiple of 3 or 9 respectively is a sanity test