/usr/share/openscad/regression/csgtexttest/ is in openscad-testing-data 2015.03-2+dfsg-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/openscad/regression/csgtexttest/allexpressions-expected.txt
/usr/share/openscad/regression/csgtexttest/allfunctions-expected.txt
/usr/share/openscad/regression/csgtexttest/allmodules-expected.txt
/usr/share/openscad/regression/csgtexttest/difference-tests-expected.txt
/usr/share/openscad/regression/csgtexttest/import_stl-tests-expected.txt
/usr/share/openscad/regression/csgtexttest/intersection-tests-expected.txt
/usr/share/openscad/regression/csgtexttest/linear_extrude-tests-expected.txt
/usr/share/openscad/regression/csgtexttest/null-polygons-expected.txt
/usr/share/openscad/regression/csgtexttest/polygon-illegal-winding-expected.txt
/usr/share/openscad/regression/csgtexttest/polyset-reduce-crash-expected.txt
/usr/share/openscad/regression/csgtexttest/projection-tests-expected.txt
/usr/share/openscad/regression/csgtexttest/rotate_extrude-tests-expected.txt
/usr/share/openscad/regression/csgtexttest/sphere-tests-expected.txt
/usr/share/openscad/regression/csgtexttest/surface-tests-expected.txt