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 geojson') do
      it('should be valid geojson') do
        @circle.longitude = 5.6
        expected = '{"type":"Feature","geometry":{"type":"Point",' \
          '"coordinates":[5.6,0]},"properties":{"radius":1}}'
        expect(@circle.to_geojson).to eq expected
      end
    end

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