Introduction of Functional Testing

Functional testing is a form of black box testing that bases its test cases on the specifications of the software component under test.

Functional testing typically involves five steps:

1. The identification of functions that the software is expected to perform
2. The creation of input data based on the function’s specifications
3. The determination of output based on the function’s specifications
4. The execution of the test case
5. The comparison of actual and expected outputs