Demonstrates use of Object#tap in unit testing. Small gain in neatness.

triangle_test.rb

class TestTriangle < Test::Unit::TestCase
  
  def test_isosceles_given_base_and_height
    triangle(:ABC, :isosceles, :base => 5, :height :=> 9).tap do |t|
      assert_point_equal p(2.5,9), t.apex
      assert_point_equal p(0,0),   @register[:A]
      assert_point_equal p(5,0),   @register[:B]
      assert_point_equal p(2.5,9), @register[:C]
      assert_equal       t,        @register.retrieve(:triangle, :ABC)
    end
  end

end