OCCT

restore [locate_data_file bug29481_ex1.brep] s
explode s f

# removal of the square gap, keeping the sphere.

removefeatures result s s_7 s_10
checkshape result
checkprops result -s 466.126 -v 197.014 -deps 1.e-7
checknbshapes result -vertex 28 -edge 43 -wire 22 -face 18 -shell 1 -solid 1 -t
CheckIsFeatureRemoved s_7 {e f}
CheckIsFeatureRemoved s_10 {e f}

# get history of the operation
savehistory rf_hist

# check modification of the side faces
modified m12 rf_hist s_12
modified m19 rf_hist s_19

if {![regexp "same shapes" [compare m12 m19]]} {
  puts "Error: incorrect feature removal"
}

checkprops m12 -s 13.9463
checknbshapes m12 -vertex 7 -edge 7 -wire 1 -face 1

checkview -display result -2d -path ${imagedir}/${test_image}.png