# File test/test_model.rb, line 51
  def test_delete()
    model = Model.new()
    dom = BNode.new('dom')
    model.add(dom,@foaf['firstName'],'Dominic')
    model.add(dom,@foaf['surname'],'Sisneros')
    assert_equal(2,model.size)
    st = Statement.new(dom,@foaf['firstName'],'Dominic')
    assert(model.include_statement?(st))
    model.delete_statement(st)
    assert(!model.include_statement?(st),"model should not include statement")
    assert_equal(1,model.size)
    model.delete(dom,@foaf['surname'],'Bogus')
    assert_equal(1,model.size)
    model.delete(dom,@foaf['surname'],'Sisneros')
    assert_equal(0,model.size)
  end