[Refactoring] Create a copy of samples/samples/testdata in tests

• tests depends on testdata in samples/samples/testdata
  • test__helpers.py
  • test__param_types.py
• Removing this dependency

Is your feature request related to a problem? Please describe.
Dependencies creates error as samples folder is not synced
Describe the solution you'd like
Create a copy of testdata inside tests/
Describe alternatives you've considered
NA
Additional context
NA