Hi,
I'm struggling to understand your description. You state you have one test case and 100 testdata files covering the different tests you want to exercise - so this is a looping test case - right?
you state "at test step 3 you have add an assertion "json_status" and "json_statusMsg" to validate the response - but we don't know the significance of test step 3 - nor what "json_status" or "json_statusMsg" actually means.
Q1. What is test step 3?
Q2. is this a REST/SOAP request?
Q3. are json_status and json_statusMsg 2 attributes in the requests response?
next you state "how to add the test result(passed/failed) for each for testdata based on status of assertion in step 3 to property "finalTestResults" in DataSink
Q4. Is DataSink test step, step4 in your test?
Q5. Are you saying you have you want to write out the results of each of the test case loop's results (either pass or fail) to the property setup via the DataSink?
Cheers,
rich