In this folder, all tests which in the format of '*_add.spec' organized according to specific format.

For isolation tests, we selected 'n' representative operations and we aimed to perform all possible pairs of 'n' operations together. So first test just runs first of these 'n' operation with remaining 'n - 1' operation. Similary, second test just runs second operation with remaining 'n - 2' operation. With this logic, we eventually run every selected operation with every other selected operation.