using sb

@test sum(abs.(3*sb.σy - [[0 -3im]; [3im 0]])) < eps(1.0)
@test sum(abs.(sb.zm)) < eps(1.0)
@test sum(abs.(3*sb.σz - [[3 0]; [0 -3]])) < eps(1.0)
@test sum(abs.(3*sb.eye - [[3 0]; [0 3]])) < eps(1.0)
@test sum(abs.(3*sb.σx - [[0 3]; [3 0]])) < eps(1.0)
