Fix broken test artist controller tests, tag alias test.

app/models/tag_alias.rb

@@ -203,12 +203,9 @@ class TagAlias < TagRelationship
     end
 
     if antecedent_tag.category == Tag.categories.artist
-      antecedent_artist = Artist.name_matches(antecedent_name).first
-      if antecedent_artist.present? && Artist.name_matches(consequent_name).blank?
+      if antecedent_tag.artist.present? && consequent_tag.artist.blank?
         CurrentUser.scoped(creator, creator_ip_addr) do
-          antecedent_artist.update_attributes(
-            :name => consequent_name
-          )
+          antecedent_tag.artist.update!(name: consequent_name)
         end
       end
     end

test/functional/artists_controller_test.rb

@@ -106,13 +106,13 @@ class ArtistsControllerTest < ActionDispatch::IntegrationTest
       end
 
       should "find artists by image URL" do
-        get artists_path(name: "http://i2.pixiv.net/img04/img/syounen_no_uta/46170939_m.jpg", format: "json")
+        get artists_path(search: { url_matches: "http://i2.pixiv.net/img04/img/syounen_no_uta/46170939_m.jpg" }, format: "json")
         assert_artist_found("masao")
       end
 
       should "find artists by page URL" do
         url = "http://www.pixiv.net/member_illust.php?mode=medium&illust_id=46170939"
-        get artists_path(name: url, format: "json")
+        get artists_path(search: { url_matches: url }, format: "json")
         assert_artist_found("masao")
       end
     end