There are mainly 2 types of incremental testing.

1.top down

2.bottam up

Bottam up begins tesing form the bottom of the hirarchy and works up to the top.moduls are added in the decending hirerichal order.

Bottam up testing requires the devlopment of the driver module which provides the test input call the module or program being tested display test output.

Bottam up is more advantagaus became it is easy to creat driver rather creating a stub and can serve multiple purposes.output is easier to to examine as it comes from the module directly bove the module under test

Bottom Up Testing: An approach to integration testing where the lowest level components are tested first then used to facilitate the testing of higher level components. The process is repeated until the component at the top of the hierarchy is tested

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