forked from 1b-agent/opencadstudio-upstream
Matus Mastena
930cdc2df8
UCS FACE had no test at all: it was only known to compile. The plane it builds has two halves and they sit either side of a visibility boundary, so the coverage splits to match. tests/ucs_face_plane.rs takes the public route — extrude a disc, then check the caps come back as distinct planar faces with opposite outward normals, that an off-centre pick lands on the same face as a central one, and that the curved wall is never offered as a plane. The axis construction is pub(crate), so it is unit-tested next to ucs_from_normal instead: Z is the normal it was handed, the axes stay orthonormal, a normal along world Z still yields a plane rather than crossing with itself, the same normal is reproducible, and a zero vector is refused rather than silently producing a degenerate UCS.