test/unit/bounding_box_test.rb

   1 require File.dirname(__FILE__) + '/../test_helper'
   2
   3 class BoundingBoxTest < ActiveSupport::TestCase
   4   def setup
   5     @size_error_message = "The maximum bbox size is 0.25, and your request was too large. Either request a smaller area, or use planet.osm"
   6     @malformed_error_message = "The parameter bbox is required, and must be of the form min_lon,min_lat,max_lon,max_lat"
   7     @lon_order_error_message = "The minimum longitude must be less than the maximum longitude, but it wasn't"
   8     @lat_order_error_message = "The minimum latitude must be less than the maximum latitude, but it wasn't"
   9     @bbox_out_of_limits_error_message = "The latitudes must be between -90.0 and 90.0, and longitudes between -180.0 and 180.0"
  10     @nil_error_message = "Should not contain nil"
  11
  12     @bbox_from_nils = BoundingBox.new(nil, nil, nil, nil)
  13     @bbox_expand = BoundingBox.new(0,0,0,0)
  14     @bbox_expand_ten = BoundingBox.new(10,10,10,10)
  15     @bbox_expand_minus_two = BoundingBox.new(-2,-2,-2,-2)
  16     @bbox_from_string = BoundingBox.from_s("1,2,3,4")
  17     @min_lon = 1.0
  18     @min_lat = 2.0
  19     @max_lon = 3.0
  20     @max_lat = 4.0
  21
  22     @bad_positive_boundary_bbox  = %w{ 181,91,0,0 0,0,181,91 }
  23     @bad_negative_boundary_bbox  = %w{ -181,-91,0,0 0,0,-181,-91 }
  24     @bad_big_bbox       = %w{ -0.1,-0.1,1.1,1.1  10,10,11,11 }
  25     @bad_malformed_bbox = %w{ -0.1  hello 10N2W10.1N2.1W }
  26     @bad_lat_mixed_bbox  = %w{ 0,0.1,0.1,0  -0.1,80,0.1,70  0.24,54.34,0.25,54.33 }
  27     @bad_lon_mixed_bbox  = %w{ 80,-0.1,70,0.1  54.34,0.24,54.33,0.25 }
  28     @bad_limit_bbox = %w{ -180.1,-90,180,90 -180,-90.1,180,90 -180,-90,180.1,90 -180,-90,180,90.1}
  29     @good_bbox         = %w{ -0.1,-0.1,0.1,0.1  51.1,-0.1,51.2,0 -0.1,%20-0.1,%200.1,%200.1
  30                             -0.1edcd,-0.1d,0.1,0.1  -0.1E,-0.1E,0.1S,0.1N S0.1,W0.1,N0.1,E0.1}
  31
  32     @expand_min_lon_array = %w{ 2,10,10,10 1,10,10,10 0,10,10,10 -1,10,10,10 -2,10,10,10 -8,10,10,10 }
  33     @expand_min_lat_array = %w{ 10,2,10,10 10,1,10,10 10,0,10,10 10,-1,10,10 10,-2,10,10 10,-8,10,10 }
  34     @expand_max_lon_array = %w{ -2,-2,-1,-2 -2,-2,0,-2 -2,-2,1,-2 -2,-2,2,-2 }
  35     @expand_max_lat_array = %w{ -2,-2,-2,-1 -2,-2,-2,0 -2,-2,-2,1 -2,-2,-2,2 }
  36     @expand_min_lon_margin_response = [[2,10,10,10], [-7,10,10,10], [-7,10,10,10], [-7,10,10,10], [-7,10,10,10], [-25,10,10,10]]
  37     @expand_min_lat_margin_response = [[10,2,10,10], [10,-7,10,10], [10,-7,10,10], [10,-7,10,10], [10,-7,10,10], [10,-25,10,10]]
  38     @expand_max_lon_margin_response = [[-2,-2,-1,-2], [-2,-2,1,-2], [-2,-2,1,-2], [-2,-2,5,-2]]
  39     @expand_max_lat_margin_response = [[-2,-2,-2,-1], [-2,-2,-2,1], [-2,-2,-2,1], [-2,-2,-2,5]]
  40   end
  41
  42   def test_good_bbox_from_string
  43     @good_bbox.each do |string|
  44       bbox = BoundingBox.from_s(string)
  45       array = string.split(',').collect {|s| s.to_f}
  46       check_bbox(bbox, array)
  47     end
  48   end
  49
  50   def test_bbox_from_s_malformed
  51     @bad_malformed_bbox.each do |bbox_string|
  52       bbox = BoundingBox.from_s(bbox_string)
  53       assert_nil bbox
  54     end
  55   end
  56
  57   def test_good_bbox_from_params
  58     @good_bbox.each do |string|
  59       bbox = BoundingBox.from_bbox_params({:bbox => string})
  60       array = string.split(',').collect {|s| s.to_f}
  61       check_bbox(bbox, array)
  62     end
  63   end
  64
  65   def test_good_bbox_from_lon_lat_params
  66     @good_bbox.each do |string|
  67       array = string.split(',')
  68       bbox = BoundingBox.from_lon_lat_params({:minlon => array[0], :minlat => array[1], :maxlon => array[2], :maxlat => array[3]})
  69       check_bbox(bbox, array.collect {|s| s.to_f})
  70     end
  71   end
  72
  73   def test_bbox_from_params_malformed
  74     @bad_malformed_bbox.each do |bbox_string|
  75       exception = assert_raise(OSM::APIBadUserInput) {BoundingBox.from_bbox_params({:bbox => bbox_string})}
  76       assert_equal(@malformed_error_message, exception.message)
  77     end
  78   end
  79
  80   def test_good_bbox_from_new
  81     @good_bbox.each do |string|
  82       array = string.split(',')
  83       bbox = BoundingBox.new(array[0], array[1], array[2], array[3])
  84       check_bbox(bbox, array.collect {|s| s.to_f})
  85     end
  86   end
  87
  88   def test_creation_from_new_with_nils
  89     check_bbox(@bbox_from_nils, [nil, nil, nil, nil])
  90   end
  91
  92   def test_expand_min_lon_boundary
  93     @bbox_expand.expand!(BoundingBox.new(-1810000000,0,0,0))
  94     check_expand(@bbox_expand, "-1800000000,0,0,0")
  95   end
  96
  97   def test_expand_min_lat_boundary
  98     @bbox_expand.expand!(BoundingBox.new(0,-910000000,0,0))
  99     check_expand(@bbox_expand, "0,-900000000,0,0")
 100   end
 101
 102   def test_expand_max_lon_boundary
 103     @bbox_expand.expand!(BoundingBox.new(0,0,1810000000,0))
 104     check_expand(@bbox_expand, "0,0,1800000000,0")
 105   end
 106
 107   def test_expand_max_lat_boundary
 108     @bbox_expand.expand!(BoundingBox.new(0,0,0,910000000))
 109     check_expand(@bbox_expand, "0,0,0,900000000")
 110   end
 111
 112   def test_expand_min_lon_without_margin
 113     @expand_min_lon_array.each {|array_string| check_expand(@bbox_expand_ten, array_string)}
 114   end
 115
 116   def test_expand_min_lon_with_margin
 117     @expand_min_lon_array.each_with_index do |array_string, index|
 118       check_expand(@bbox_expand_ten, array_string, 1, @expand_min_lon_margin_response[index])
 119     end
 120   end
 121
 122   def test_expand_min_lat_without_margin
 123     @expand_min_lat_array.each {|array_string| check_expand(@bbox_expand_ten, array_string)}
 124   end
 125
 126   def test_expand_min_lat_with_margin
 127     @expand_min_lat_array.each_with_index do |array_string, index|
 128       check_expand(@bbox_expand_ten, array_string, 1, @expand_min_lat_margin_response[index])
 129     end
 130   end
 131
 132   def test_expand_max_lon_without_margin
 133     @expand_max_lon_array.each {|array_string| check_expand(@bbox_expand_minus_two, array_string)}
 134   end
 135
 136   def test_expand_max_lon_with_margin
 137     @expand_max_lon_array.each_with_index do |array_string, index|
 138       check_expand(@bbox_expand_minus_two, array_string, 1, @expand_max_lon_margin_response[index])
 139     end
 140   end
 141
 142   def test_expand_max_lat_without_margin
 143     @expand_max_lat_array.each {|array_string| check_expand(@bbox_expand_minus_two, array_string)}
 144   end
 145
 146   def test_expand_max_lat_with_margin
 147     bbox = @bbox_expand
 148     @expand_max_lat_array.each_with_index do |array_string, index|
 149       check_expand(@bbox_expand_minus_two, array_string, 1, @expand_max_lat_margin_response[index])
 150     end
 151   end
 152
 153   def test_good_bbox_boundaries
 154     @good_bbox.each do |bbox_string|
 155       assert_nothing_raised(OSM::APIBadBoundingBox) {BoundingBox.from_s(bbox_string).check_boundaries}
 156     end
 157   end
 158
 159   def test_from_params_with_positive_out_of_boundary
 160     @bad_positive_boundary_bbox.each do |bbox_string|
 161       bbox = BoundingBox.from_bbox_params({:bbox => bbox_string})
 162       array = bbox.to_a
 163       assert_equal 180, [array[0], array[2]].max
 164       assert_equal 90, [array[1], array[3]].max
 165     end
 166   end
 167
 168   def test_from_params_with_negative_out_of_boundary
 169     @bad_negative_boundary_bbox.each do |bbox_string|
 170       bbox = BoundingBox.from_bbox_params({:bbox => bbox_string})
 171       array = bbox.to_a
 172       assert_equal -180, [array[0], array[2]].min
 173       assert_equal -90, [array[1], array[3]].min
 174     end
 175   end
 176
 177   def test_boundaries_mixed_lon
 178     @bad_lon_mixed_bbox.each do |bbox_string|
 179       exception = assert_raise(OSM::APIBadBoundingBox) {BoundingBox.from_s(bbox_string).check_boundaries}
 180       assert_equal(@lon_order_error_message, exception.message)
 181     end
 182   end
 183
 184   def test_boundaries_mixed_lat
 185     @bad_lat_mixed_bbox.each do |bbox_string|
 186       exception = assert_raise(OSM::APIBadBoundingBox) {BoundingBox.from_s(bbox_string).check_boundaries}
 187       assert_equal(@lat_order_error_message, exception.message)
 188     end
 189   end
 190
 191   def test_boundaries_out_of_limits
 192     @bad_limit_bbox.each do |bbox_string|
 193       exception = assert_raise(OSM::APIBadBoundingBox) {BoundingBox.from_s(bbox_string).check_boundaries}
 194       assert_equal(@bbox_out_of_limits_error_message, exception.message)
 195     end
 196   end
 197
 198   def test_good_bbox_size
 199     @good_bbox.each do |bbox_string|
 200       assert_nothing_raised(OSM::APIBadBoundingBox) {BoundingBox.from_s(bbox_string).check_size}
 201     end
 202   end
 203
 204   def test_size_to_big
 205     @bad_big_bbox.each do |bbox_string|
 206       bbox = nil
 207       assert_nothing_raised(OSM::APIBadBoundingBox) {bbox = BoundingBox.from_bbox_params({:bbox => bbox_string}).check_boundaries}
 208       exception = assert_raise(OSM::APIBadBoundingBox) {bbox.check_size}
 209       assert_equal(@size_error_message, exception.message)
 210     end
 211   end
 212
 213   def test_bbox_area
 214     @good_bbox.each do |string|
 215       bbox = BoundingBox.from_s(string)
 216       array = string.split(',')
 217       assert_equal ((array[2].to_f - array[0].to_f) * (array[3].to_f - array[1].to_f)), bbox.area
 218     end
 219   end
 220
 221   def test_complete
 222     assert !@bbox_from_nils.complete?, "should contain a nil"
 223     assert @bbox_from_string.complete?, "should not contain a nil"
 224   end
 225
 226   def test_centre_lon
 227     @good_bbox.each do |bbox_string|
 228       array = bbox_string.split(',')
 229       assert_equal ((array[0].to_f + array[2].to_f) / 2.0), BoundingBox.from_s(bbox_string).centre_lon
 230     end
 231   end
 232
 233   def test_centre_lat
 234     @good_bbox.each do |bbox_string|
 235       array = bbox_string.split(',')
 236       assert_equal ((array[1].to_f + array[3].to_f) / 2.0), BoundingBox.from_s(bbox_string).centre_lat
 237     end
 238   end
 239
 240   def test_width
 241     @good_bbox.each do |bbox_string|
 242       array = bbox_string.split(',')
 243       assert_equal (array[2].to_f - array[0].to_f), BoundingBox.from_s(bbox_string).width
 244     end
 245   end
 246
 247   def test_height
 248     @good_bbox.each do |bbox_string|
 249       array = bbox_string.split(',')
 250       assert_equal (array[3].to_f - array[1].to_f), BoundingBox.from_s(bbox_string).height
 251     end
 252   end
 253
 254   def test_slippy_width
 255     assert_in_delta 5.68888888888889, @bbox_from_string.slippy_width(2), 0.000000000000001
 256   end
 257
 258   def test_slippy_height
 259     assert_in_delta 5.69698684268433, @bbox_from_string.slippy_height(2), 0.000000000000001
 260   end
 261
 262   def test_add_bounds_to_no_underscore
 263     bounds = @bbox_from_string.add_bounds_to({})
 264     assert_equal 4, bounds.size
 265     assert_equal @min_lon.to_s, bounds['minlon']
 266     assert_equal @min_lat.to_s, bounds['minlat']
 267     assert_equal @max_lon.to_s, bounds['maxlon']
 268     assert_equal @max_lat.to_s, bounds['maxlat']
 269   end
 270
 271   def test_add_bounds_to_with_underscore
 272     bounds = @bbox_from_string.add_bounds_to({}, '_')
 273     assert_equal 4, bounds.size
 274     assert_equal @min_lon.to_s, bounds['min_lon']
 275     assert_equal @min_lat.to_s, bounds['min_lat']
 276     assert_equal @max_lon.to_s, bounds['max_lon']
 277     assert_equal @max_lat.to_s, bounds['max_lat']
 278   end
 279
 280   def test_to_scaled
 281     bbox = @bbox_from_string.to_scaled
 282     assert_equal @min_lon * GeoRecord::SCALE, bbox.min_lon
 283     assert_equal @min_lat * GeoRecord::SCALE, bbox.min_lat
 284     assert_equal @max_lon * GeoRecord::SCALE, bbox.max_lon
 285     assert_equal @max_lat * GeoRecord::SCALE, bbox.max_lat
 286   end
 287
 288   def test_to_unscaled
 289     scale = GeoRecord::SCALE
 290     bbox = BoundingBox.new(1.0 * scale, 2.0 * scale, 3.0 * scale, 4.0 * scale).to_unscaled
 291     check_bbox(bbox, [@min_lon, @min_lat, @max_lon, @max_lat])
 292   end
 293
 294   def test_to_a
 295     assert_equal [1.0,2.0,3.0,4.0], @bbox_from_string.to_a
 296   end
 297
 298   def test_to_string
 299     assert_equal "#{@min_lon},#{@min_lat},#{@max_lon},#{@max_lat}", @bbox_from_string.to_s
 300   end
 301
 302   private
 303   def check_expand(bbox, array_string, margin = 0, result = nil)
 304     array = array_string.split(',').collect {|s| s.to_f}
 305     result = array unless result
 306     bbox.expand!(BoundingBox.new(array[0], array[1], array[2], array[3]), margin)
 307     check_bbox(bbox, result)
 308   end
 309
 310   def check_bbox(bbox, result)
 311     assert_equal result[0], bbox.min_lon, 'min_lon'
 312     assert_equal result[1], bbox.min_lat, 'min_lat'
 313     assert_equal result[2], bbox.max_lon, 'max_lon'
 314     assert_equal result[3], bbox.max_lat, 'max_lat'
 315   end
 316 end