Testers with depend on functional specifications in SRS to 
prepare test scenariors and test cases for functional 
testing.

Approach to test functional specifications:

step 1 : collect functional specifications of responsible 
module for testing in project.

step 2:  collect one functional specification from that 
list.

step 3:study that specification in terms of entry point, 
required input,normal flow,expected outputs,exit point and 
alternative flow if available of corresponding functionality

step 4: prepare test scenariors depending of above study

step 5 review that scenario for completeness and correctness

step 6:prepare test cases and review them for completeness 
and correctness

step 7 : go to step 2 untill all the functional 
specifictions study.