# File karel/test_robots.rb, line 129
  def test_neighbors
    @charlie = Robot.new(3, 3, Robota::EAST, 0)
    @mary = Robot.new(3, 3, Robota::NORTH, 1)
    val = @karel.neighbors.each{|neighbor| puts neighbor.to_s}
    assert_equal("Array", val.class.to_s)
    assert_equal(2, val.length)
    @world.assert_robots_at(3, 3)
    assert_raise(NoBeepers){@world.assert_beepers_at(3,3)}
    @world.place_beeper(3,3)
    @world.assert_beepers_at(3,3)
    assert(@charlie.next_to_a_robot?)
    @karel.assert_at(3, 3)
  end