require 'test/unit'
require 'lib/geokit'
 
class BoundsTest < Test::Unit::TestCase #:nodoc: all
  
  def setup
    # This is the area in Texas
    @sw = Geokit::LatLng.new(32.91663,-96.982841)
    @ne = Geokit::LatLng.new(32.96302,-96.919495)
    @bounds=Geokit::Bounds.new(@sw,@ne) 
    @loc_a=Geokit::LatLng.new(32.918593,-96.958444) # inside bounds    
    @loc_b=Geokit::LatLng.new(32.914144,-96.958444) # outside bouds
    
    # this is a cross-meridan area
    @cross_meridian=Geokit::Bounds.normalize([30,170],[40,-170])
    @inside_cm=Geokit::LatLng.new(35,175)
    @inside_cm_2=Geokit::LatLng.new(35,-175)
    @east_of_cm=Geokit::LatLng.new(35,-165)
    @west_of_cm=Geokit::LatLng.new(35,165)
 
  end  
 
  def test_equality
    assert_equal Geokit::Bounds.new(@sw,@ne), Geokit::Bounds.new(@sw,@ne)
  end  
  
  def test_normalize
    res=Geokit::Bounds.normalize(@sw,@ne)
    assert_equal res,Geokit::Bounds.new(@sw,@ne)     
    res=Geokit::Bounds.normalize([@sw,@ne])
    assert_equal res,Geokit::Bounds.new(@sw,@ne)
    res=Geokit::Bounds.normalize([@sw.lat,@sw.lng],[@ne.lat,@ne.lng])
    assert_equal res,Geokit::Bounds.new(@sw,@ne)
    res=Geokit::Bounds.normalize([[@sw.lat,@sw.lng],[@ne.lat,@ne.lng]])
    assert_equal res,Geokit::Bounds.new(@sw,@ne)
  end
  
  def test_point_inside_bounds
    assert @bounds.contains?(@loc_a)
  end
 
  def test_point_outside_bounds
    assert !@bounds.contains?(@loc_b) 
  end  
 
  def test_point_inside_bounds_cross_meridian
    assert @cross_meridian.contains?(@inside_cm)
    assert @cross_meridian.contains?(@inside_cm_2)
  end
 
  def test_point_outside_bounds_cross_meridian
    assert !@cross_meridian.contains?(@east_of_cm)
    assert !@cross_meridian.contains?(@west_of_cm)
  end    
  
  def test_center
    assert_in_delta 32.939828,@bounds.center.lat,0.00005
    assert_in_delta(-96.9511763,@bounds.center.lng,0.00005)
  end
 
  def test_center_cross_meridian
    assert_in_delta 35.41160, @cross_meridian.center.lat,0.00005
    assert_in_delta 179.38112, @cross_meridian.center.lng,0.00005
  end  
  
  def test_creation_from_circle
    bounds=Geokit::Bounds.from_point_and_radius([32.939829, -96.951176],2.5)
    inside=Geokit::LatLng.new 32.9695270000,-96.9901590000
    outside=Geokit::LatLng.new 32.8951550000,-96.9584440000
    assert bounds.contains?(inside)
    assert !bounds.contains?(outside)
  end
  
  def test_bounds_to_span
    sw = Geokit::LatLng.new(32, -96)
    ne = Geokit::LatLng.new(40, -70)
    bounds = Geokit::Bounds.new(sw, ne)
    
    assert_equal Geokit::LatLng.new(8, 26), bounds.to_span
  end
  
  def test_bounds_to_span_with_bounds_crossing_prime_meridian
    sw = Geokit::LatLng.new(20, -70)
    ne = Geokit::LatLng.new(40, 100)
    bounds = Geokit::Bounds.new(sw, ne)
    
    assert_equal Geokit::LatLng.new(20, 170), bounds.to_span
  end
  
  def test_bounds_to_span_with_bounds_crossing_dateline
    sw = Geokit::LatLng.new(20, 100)
    ne = Geokit::LatLng.new(40, -70)
    bounds = Geokit::Bounds.new(sw, ne)
    
    assert_equal Geokit::LatLng.new(20, 190), bounds.to_span
  end
end