require 'test_helper'

describe "Ugly interfaces cleaner" do

  specify "should map functions detailed" do
    node = nil

    Extension.new "ui" do |e|
      e.sources full_dir("headers/ugly_interface.h")

      node = e.namespace("UI")

      # test the no export option
      node.functions("uiIgnore").ignore

      # static method wrapping
      node.functions("IlikeVectors").wrap_as("create_vector")

      e.module "UI" do |m|
        m.module "Math" do |m_math|
          #function wrapping
          m_math.includes node.functions("uiAdd").wrap_as("add")
          # Wrap_as changes the name of the node

          m_math.includes node.functions("ui_Subtract").wrap_as("subtract")
          m_math.includes node.namespaces("DMath").functions("divide")
        end

        #class wrapping
        vector = node.classes("C_UIVector").wrap_as("Vector")
        vector.methods("x_").wrap_as("x")
        vector.methods("set_x").wrap_as("x=")

        m.includes vector

        #mapping stray functions to singleton methods
        modder = node.namespaces("I_LEARN_C").classes("Modder").wrap_as("Modulus")
        modder.includes node.namespaces("I_LEARN_C").functions("mod")
        modder.includes node.namespaces("I_LEARN_C").functions("mod2").wrap_as("method_mod").as_instance_method
        modder.use_constructor(modder.constructors.find(:arguments => []))
        m.includes modder

        nc = node.classes("NoConstructor")
        nc.constructors.each { |c| c.ignore }
        m.includes nc

        m.includes node.classes("Outside")
        inside = node.classes("Inside")
        inside.use_constructor(inside.constructors.find(:arguments => []))
        node.classes("Outside").includes inside
      end
    end

    require 'ui'

    lambda do
      ui_ignore()
    end.should raise_error(NoMethodError)

    lambda do
      ui_add(1,2)
    end.should raise_error(NoMethodError)

    UI::Math::add(1,2).should == 3

    lambda do
      ui_subtract(2,1)
    end.should raise_error(NoMethodError)

    UI::Math::subtract(2,1).should == 1

    lambda do
      C_UIVector.new
    end.should raise_error(NameError)

    v = UI::Vector.new
    v.x = 3
    v.x.should == 3

    lambda do
      UI::DMath::divide(1.0,2.0)
    end.should raise_error(NameError)

    UI::Modulus.mod(3,2).should == 1

    UI::Modulus.new.method_mod(4, 3).should == 1

    UI::Math::divide(2,1).should == 2

    lambda do
      UI::NoConstructor.new
    end.should raise_error(TypeError)

    UI::Outside::Inside.new
  end
end