puts "============================================================"
puts "OCC31617: Export STEP in nonmanifold mode corrupts the shape"
puts "============================================================"
puts ""

brestore [locate_data_file bug31617.brep] a

param write.step.nonmanifold 1

set aTmpFile "$imagedir/${casename}.step"
testwritestep "$aTmpFile" a
testreadstep  "$aTmpFile" result
file delete   "$aTmpFile"

checkshape result
checknbshapes result -ref [lrange [nbshapes a] 11 16]