class TestEdge

# File test/edge_test.rb, line 9
def test_directed_edge
  assert_raises(ArgumentError) { DirectedEdge.new }
  e = DirectedEdge.new 1, 2
  assert_equal(1, e.source)
  assert_equal(2, e.target)
  assert_equal([1, 2], e.to_a)
  assert_equal("(1-2)", e.to_s)
  assert_equal("(2-1)", e.reverse.to_s)
  assert_equal([1, 2], [e[0], e[1]])
  assert(DirectedEdge[1, 2].eql?(DirectedEdge.new(1, 2)))
  assert(!DirectedEdge[1, 2].eql?(DirectedEdge.new(1, 3)))
  assert(!DirectedEdge[2, 1].eql?(DirectedEdge.new(1, 2)))
end

# File test/edge_test.rb, line 23
def test_undirected_edge
  assert_raises(ArgumentError) { UnDirectedEdge.new }
  e = UnDirectedEdge.new 1, 2
  assert_equal(1, e.source)
  assert_equal(2, e.target)
  assert_equal([1, 2], e.to_a)
  assert_equal("(1=2)", e.to_s)
  assert(UnDirectedEdge.new(1, 2).eql?(UnDirectedEdge.new(2, 1)))
  assert(!UnDirectedEdge.new(1, 3).eql?(UnDirectedEdge.new(2, 1)))
  assert_equal(UnDirectedEdge.new(1, 2).hash, UnDirectedEdge.new(1, 2).hash)
end