require 'spec_helper'

require 'rubabel/molecule'
require 'rubabel/bond'

describe Rubabel::Bond do
  subject { Rubabel::Molecule.from_file( TESTFILES + '/cholesterol.sdf' ).bonds.first }

  it 'is a Rubabel::Bond' do
    subject.should be_a(Rubabel::Bond)
  end

  it 'knows what atoms it includes' do
    subject.each_atom do |atom|
      atom.should be_a(Rubabel::Atom)
    end
    subject.atoms.size.should == 2
  end
end