test suite for http://www.rubyproblems.com/problems/2010/04/geography_lesson

LatLon.spec.rb

# test suite for http://www.rubyproblems.com/problems/2010/04/geography_lesson

def run_test( input , x , y )
  it "should return [#{x},#{y}] when given #{input.inspect}" do
    LatLon.to_xy(input).should == [ x , y ]
  end
end


describe 'LatLon.to_xy' do
  
  describe 'Signed Decimal Degrees' do
    [ ["45.1234 36.2345"    , 36.2345   , 45.1234   ], 
      ["+45.1234 +36.2345"  , 36.2345   , 45.1234   ], 
      ["-45.1234 -36.2345"  , -36.2345  , -45.1234  ], 
      ["45.1234 -36.2345"   , -36.2345  , 45.1234   ], 
      ["-45.1234 36.2345"   , 36.2345   , -45.1234  ],
    ].each &method(:run_test)
  end
  
  describe 'Decimal Degrees with Directions' do
    [ ["45.1234 N 36.2345 E"  ,  36.2345   ,  45.1234   ],
      ["45.1234 S 36.2345 W"  ,  -36.2345  ,  -45.1234  ],
      ["45.1234 N 36.2345 W"  ,  -36.2345  ,  45.1234   ],
      ["45.1234 S 36.2345 E"  ,  36.2345   ,  -45.1234  ],
      ["N 45.1234 E 36.2345"  ,  36.2345   ,  45.1234   ],
      ["S 45.1234 W 36.2345"  ,  -36.2345  ,  -45.1234  ],
      ["N 45.1234 W 36.2345"  ,  -36.2345  ,  45.1234   ],
      ["S 45.1234 E 36.2345"  ,  36.2345   ,  -45.1234  ],
    ].each &method(:run_test)
  end
  
  describe 'Decimal Degrees and Minutes' do
    [ ["40 30.6 N 65 36.36 E"  ,  65.606   ,  40.51   ],
      ["40 30.6 S 65 36.36 W"  ,  -65.606  ,  -40.51  ],
      ["40 30.6 N 65 36.36 W"  ,  -65.606  ,  40.51   ],
      ["N 40 30.6 E 65 36.36"  ,  65.606   ,  40.51   ],
      ["S 40 30.6 W 65 36.36"  ,  -65.606  ,  -40.51  ],
      ["N 40 30.6 W 65 36.36"  ,  -65.606  ,  40.51   ],
      ["40 30.6 65 36.36"      ,  65.606   ,  40.51   ],
      ["+40 30.6 +65 36.36"    ,  65.606   ,  40.51   ],
      ["-40 30.6 -65 36.36"    ,  -65.606  ,  -40.51  ],
      ["40 30.6 -65 36.36"     ,  -65.606  ,  40.51   ],
      ["-40 30.6 65 36.36"     ,  65.606   ,  -40.51  ],
    ].each &method(:run_test)
  end
  
  describe 'Decimal Degrees, Minutes, and Seconds' do
    [ ["45 45 4.5 N 38 30 10.8 E"  ,  38.503   ,  45.75125   ],
      ["45 45 4.5 S 38 30 10.8 W"  ,  -38.503  ,  -45.75125  ],
      ["45 45 4.5 N 38 30 10.8 W"  ,  -38.503  ,  45.75125   ],
      ["N 45 45 4.5 E 38 30 10.8"  ,  38.503   ,  45.75125   ],
      ["S 45 45 4.5 W 38 30 10.8"  ,  -38.503  ,  -45.75125  ],
      ["N 45 45 4.5 W 38 30 10.8"  ,  -38.503  ,  45.75125   ],
      ["45 45 4.5 38 30 10.8"      ,  38.503   ,  45.75125   ],
      ["-45 45 4.5 -38 30 10.8"    ,  -38.503  ,  -45.75125  ],
      ["45 45 4.5 -38 30 10.8"     ,  -38.503  ,  45.75125   ],
      ["-45 45 4.5 38 30 10.8"     ,  38.503   ,  -45.75125  ],
    ].each &method(:run_test)
  end
  
end