fixes #2718: Twitter artist finding should not be case sensitive

app/logical/sources/strategies/twitter.rb

@@ -38,6 +38,14 @@ module Sources::Strategies
       TwitterService.new.image_urls(url)
     end
 
+    def normalize_for_artist_finder!
+      url.downcase
+    end
+
+    def normalizable_for_artist_finder?
+      true
+    end
+
     def status_id_from_url(url)
       if url =~ %r{^https?://(?:mobile\.)?twitter\.com/\w+/status/(\d+)}
         $1.to_i

app/models/artist_url.rb

@@ -9,7 +9,6 @@ class ArtistUrl < ActiveRecord::Base
     if url.nil?
       nil
     else
-      url = url.downcase
       url = url.gsub(/^https:\/\//, "http://")
       url = url.gsub(/^http:\/\/blog\d+\.fc2/, "http://blog.fc2")
       url = url.gsub(/^http:\/\/blog-imgs-\d+\.fc2/, "http://blog.fc2")
@@ -45,7 +44,6 @@ class ArtistUrl < ActiveRecord::Base
       url = File.dirname(url)
     end
 
-    url = url.downcase
     url = url.gsub(/^https:\/\//, "http://")
     url = url.gsub(/^http:\/\/blog\d+\.fc2/, "http://blog*.fc2")
     url = url.gsub(/^http:\/\/blog-imgs-\d+\.fc2/, "http://blog*.fc2")

test/unit/artist_url_test.rb

@@ -54,5 +54,11 @@ class ArtistUrlTest < ActiveSupport::TestCase
       assert_equal("http://img55.pixiv.net/img/monet", url.url)
       assert_equal("http://img.pixiv.net/img/monet/", url.normalized_url)
     end
+
+    should "normalize twitter urls" do
+      url = FactoryGirl.create(:artist_url, :url => "https://twitter.com/MONET/status/12345")
+      assert_equal("https://twitter.com/MONET/status/12345", url.url)
+      assert_equal("http://twitter.com/monet/status/12345/", url.normalized_url)
+    end
   end
 end