iterative ref: more tests for insert_slice #50
Description
Ideas for tests
- Using random rotation.
- check sum is close, no matter the inserted values.
- insert zeros should get zeros
- insert ones along axis (xy,xz,yz plane) should get ones
- most of entries should be zero (ratio of box length, maybe up to a factor of 2 or 3)
- same filled voxels between counts and inserted_slice_3d