require 'spec_helper'

# - www.movable-type.co.uk/scripts/latlong.html
describe GeoPoint do 
  describe 'ruby core Class extensions' do
    describe 'String extension' do
      describe '#to_lat' do              
        it 'should not return latitude on empty String' do
          @str = ""
          lambda { @str.to_lat}.should raise_error
        end

        it 'should return latitude' do
          @str = "4"
          @str.to_lat.should == 4
        end

        it 'should convert to latitude' do
          @str = "50 03 59N"
          @str.to_lat.should be_within(0.4).of(50)
        end
      end      

      describe '#to_lng' do              
        it 'should not return longitude on empty String' do
          @str = ""
          lambda { @str.to_lng}.should raise_error
        end

        it 'should return latitude' do
          @str = "4"
          @str.to_lat.should == 4
        end

        it 'should convert to latitude' do
          @str = "50 03 59E"
          @str.to_lat.should be_within(0.4).of(50)
        end
      end

      describe '#to_lat_lng' do              
        it 'should return Array with lat, lng' do
          @str = "4, 3"
          @str.to_lat_lng.should == [4, 3]
        end

        it 'should raise error if only latitude' do
          @str = "4"
          lambda { @str.to_lat_lng}.should raise_error
        end

        it 'should raise error if "," but only latitude' do
          @str = "4,"
          lambda { @str.to_lat_lng}.should raise_error
        end

        it 'should raise error if "," in bad position' do
          @str = ", 4 3"
          lambda { @str.to_lat_lng}.should raise_error
        end

        it 'should raise error if not using "," as seperator' do
          @str = "4; 3"
          lambda { @str.to_lat_lng}.should raise_error
        end
      end 
  
      describe '#geo_point' do              
        it 'should return a GeoPoint' do
          @p = "3, 2".geo_point
          @p.should be_a(GeoPoint)            
          @p.to_lat_lng.should == [3, 2]
        end
      end                 
    end # String
  end
end