X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/eab2eeaa47b2aa8c7f52371f9bfdd60711a41fb6..bc12774c21915687c07b93dbcbef78d28d2920af:/test/lib/short_link_test.rb diff --git a/test/lib/short_link_test.rb b/test/lib/short_link_test.rb index 7aa21f363..1c8d3ce2c 100644 --- a/test/lib/short_link_test.rb +++ b/test/lib/short_link_test.rb @@ -1,41 +1,41 @@ -require 'test_helper' +require "test_helper" class ShortLinkTest < ActiveSupport::TestCase ## # tests that encoding and decoding are working to within # the acceptable quantisation range. def test_encode_decode - cases = Array.new - 1000.times do - cases << [ 180.0 * rand - 90.0, 360.0 * rand - 180.0, (18 * rand).to_i ] + cases = [] + 1000.times do + cases << [180.0 * rand - 90.0, 360.0 * rand - 180.0, (18 * rand).to_i] end cases.each do |lat, lon, zoom| lon2, lat2, zoom2 = ShortLink.decode(ShortLink.encode(lon, lat, zoom)) # zooms should be identical assert_equal zoom, zoom2, "Decoding a encoded short link gives different zoom for (#{lat}, #{lon}, #{zoom})." - # but the location has a quantisation error introduced at roughly - # one pixel (i.e: zoom + 8). the sqrt(5) is because each position - # has an extra bit of accuracy in the lat coordinate, due to the + # but the location has a quantisation error introduced at roughly + # one pixel (i.e: zoom + 8). the sqrt(5) is because each position + # has an extra bit of accuracy in the lat coordinate, due to the # smaller range. - distance = Math.sqrt((lat - lat2) ** 2 + (lon - lon2) ** 2) + distance = Math.sqrt((lat - lat2)**2 + (lon - lon2)**2) max_distance = 360.0 / (1 << (zoom + 8)) * 0.5 * Math.sqrt(5) assert max_distance > distance, "Maximum expected error exceeded: #{max_distance} <= #{distance} for (#{lat}, #{lon}, #{zoom})." end end ## - # test that links are backwards-compatible, so any old links with + # test that links are backwards-compatible, so any old links with # the deprecated @ characters in them still work properly. def test_deprecated_at_sign cases = [["~v2juONc--", "@v2juONc--"], - ["as3I3GpG~-", "as3I3GpG@-"], - ["D~hV--", "D@hV--"], + ["as3I3GpG~-", "as3I3GpG@-"], + ["D~hV--", "D@hV--"], ["CO0O~m8--", "CO0O@m8--"]] cases.each do |new_code, old_code| - assert_equal ShortLink.decode(old_code), ShortLink.decode(new_code), - "old (#{old_code}) and new (#{new_code}) should decode to the same location." + assert_equal ShortLink.decode(old_code), ShortLink.decode(new_code), + "old (#{old_code}) and new (#{new_code}) should decode to the same location." end end end