How to keep your data intact for any test environment?
Many times more than one tester is responsible for testing some builds. In
this case more than one tester will be having access to common test data and
each tester will try to manipulate that common data according to his/her own
needs.
Best way to keep your valuable input data collection intact is to keep
personal copies of the same data. It may be of any format like inputs to be
provided to the application, input files such as word file, excel file or other
photo files.
Check if your data is not corrupted:
Filing a bug without proper troubleshooting is bad a practice. Before executing
any test case on existing data make sure that data is not corrupted and
application can read the data source.