Tests: refactor code in DataSuite
Tests: refactor code in DataSuite

cclib/cclib,ben-albrecht/cclib,ATenderholt/cclib,Schamnad/cclib,langner/cclib,ben-albrecht/cclib,gaursagar/cclib,ghutchis/cclib,langner/cclib,andersx/cclib,cclib/cclib,berquist/cclib,ghutchis/cclib,ATenderholt/cclib,jchodera/cclib,gaursagar/cclib,berquist/cclib,Schamnad/cclib,jchodera/cclib,andersx/cclib,langner/cclib,berquist/cclib,cclib/cclib