puts "TODO OCC26558 ALL: An exception was caught"
puts "TODO OCC26558 ALL: TEST INCOMPLETE"

puts "========"
puts "0026558: Failing to build isoline for offset surface"
puts "========"
puts ""

restore [locate_data_file bug26558_s.brep] s

mksurface sur s
offset o sur 0.5
uiso icur o 0