require 'spec_helper'

describe( RCAP::CAP_1_2::Circle ) do
  before( :each ) do
    @circle_builder = lambda do |circle|
      circle.lattitude = 0
      circle.longitude = 0
      circle.radius = 1
    end
  end
  describe( '#to_s' ) do
    it( 'should return a correct string' ) do
      @circle = RCAP::CAP_1_2::Circle.new( &@circle_builder )
      @circle.to_s.should == '0,0 1'
    end
  end

  context( 'should not be valid if' ) do
    before( :each ) do
      @circle = RCAP::CAP_1_2::Circle.new( &@circle_builder )
      @circle.should( be_valid )
    end

    it( 'does not have a lattitude defined' ) do
      @circle.lattitude = nil
      @circle.should_not( be_valid )
    end

    it( 'does not have a longitude defined' ) do
      @circle.longitude = nil
      @circle.should_not( be_valid )
    end

    it( 'does not have a radius defined' ) do
      @circle.radius = nil
      @circle.should_not( be_valid )
    end

    it( 'does not have a numeric radius' ) do
      @circle.radius = "not a number"
      @circle.should_not( be_valid )
    end

    it( 'does not have a positive radius' ) do
      @circle.radius = -1
      @circle.should_not( be_valid )
    end
  end

  context( 'on initialisation' ) do
    context( 'from XML' ) do
      before( :each ) do
        @original_circle = RCAP::CAP_1_2::Circle.new( &@circle_builder )
        @alert = RCAP::CAP_1_2::Alert.new
        @alert.add_info.add_area.add_circle( &@circle_builder )
        @xml_string = @alert.to_xml
        @xml_document = REXML::Document.new( @xml_string )
        @info_element = RCAP.xpath_first( @xml_document.root, RCAP::CAP_1_2::Info::XPATH, RCAP::CAP_1_2::Alert::XMLNS )
        @area_element = RCAP.xpath_first( @info_element, RCAP::CAP_1_2::Area::XPATH, RCAP::CAP_1_2::Alert::XMLNS )
        @circle_element = RCAP.xpath_first( @area_element, RCAP::CAP_1_2::Circle::XPATH, RCAP::CAP_1_2::Alert::XMLNS )
        @circle = RCAP::CAP_1_2::Circle.from_xml_element( @circle_element )
      end

      it( 'should parse the radius correctly' ) do
        @circle.radius.should == @original_circle.radius
      end

      it( 'should parse the lattitude and longitude correctly' ) do
        @circle.lattitude.should == @original_circle.lattitude
        @circle.longitude.should == @original_circle.longitude
      end
    end

    context( 'from a hash' ) do
      before( :each ) do
        @original_circle = RCAP::CAP_1_2::Circle.new( &@circle_builder )
        @circle = RCAP::CAP_1_2::Circle.from_h( @original_circle.to_h )
      end

      it( 'should set the radius correctly' ) do
        @circle.radius.should == @original_circle.radius
      end

      it( 'should parse the lattitude and longitude correctly' ) do
        @circle.lattitude.should == @original_circle.lattitude
        @circle.longitude.should == @original_circle.longitude
      end
    end
  end

  context( 'when exported' ) do
    before( :each ) do
        @circle = RCAP::CAP_1_2::Circle.new( &@circle_builder )
    end

    context( 'to hash' ) do
      it( 'should be correct' ) do
        @circle.to_h.should == { 'radius' => 1, 'lattitude' => 0, 'longitude' => 0 }
      end
    end
  end
end