require 'test/unit'
require 'test/framework'

require 'units'

class TC_system_create < Test::Unit::TestCase
  
  understands UnitsTest

  def test_system_create
    
    Units.create :length do |m|
      m.system 'english'
      m.system 'metric'
    end
    
    english = Units.length.english
    metric = Units.length.metric
    assert(english.kind_of?(UnitsSystem))
    assert(metric.kind_of?(UnitsSystem))
    assert(english.name == 'english')
    assert(metric.name == 'metric')
    assert(english.units_measure == Units.length)
    assert(metric.units_measure == Units.length)
    assert(Units.length.keys.index('english') != nil)
    assert(Units.length.keys.index('metric') != nil)
    assert(Units.length.keys.index('foo') == nil)
    
  end
  
end