STYLE: missed few places documentation is needed

Change-Id: Ica28447f087730cce396e0189afecf071c18ca6a
standardize tests

now take standard arguments and are structured the same way

Change-Id: I1037661d0e77ee593b9f509552e81d4ccfa427c5
STYLE: prefer std to vtkstd since 6.0.

Change-Id: I1fb50e8eb5c1680253adfdcedbca8f019c8b0935