sources: replace HTTParty with Danbooru::Http in http_exists?.

app/logical/sources/strategies/art_station.rb

@@ -147,7 +147,7 @@ module Sources::Strategies
         urls = urls.reverse
       end
 
-      chosen_url = urls.find { |url| http_exists?(url, headers) }
+      chosen_url = urls.find { |url| http_exists?(url) }
       chosen_url || url
     end
   end

app/logical/sources/strategies/base.rb

@@ -288,9 +288,8 @@ module Sources
         to_h.to_json
       end
 
-      def http_exists?(url, headers)
-        res = HTTParty.head(url, Danbooru.config.httparty_options.deep_merge(headers: headers))
-        res.success?
+      def http_exists?(url, headers = {})
+        http.headers(headers).head(url).status.success?
       end
 
       # Convert commentary to dtext by stripping html tags. Sites can override

app/logical/sources/strategies/tumblr.rb

@@ -168,7 +168,7 @@ module Sources::Strategies
       end
 
       candidates.find do |candidate|
-        http_exists?(candidate, headers)
+        http_exists?(candidate)
       end
     end
 

test/test_helpers/download_test_helper.rb

@@ -16,19 +16,4 @@ module DownloadTestHelper
   def assert_not_rewritten(source, referer = nil)
     assert_rewritten(source, source, referer)
   end
-
-  def assert_http_exists(url, headers: {})
-    res = HTTParty.head(url, Danbooru.config.httparty_options.deep_merge(headers: headers))
-    assert_equal(true, res.success?)
-  end
-
-  def assert_http_status(code, url, headers: {})
-    res = HTTParty.head(url, Danbooru.config.httparty_options.deep_merge(headers: headers))
-    assert_equal(code, res.code)
-  end
-
-  def assert_http_size(size, url, headers: {})
-    res = HTTParty.head(url, Danbooru.config.httparty_options.deep_merge(headers: headers))
-    assert_equal(size, res.content_length)
-  end
 end

test/unit/sources/nijie_test.rb

@@ -43,7 +43,7 @@ module Sources
 
       should "get the image url" do
         assert_equal("https://pic.nijie.net/03/nijie_picture/728995_20170505014820_0.jpg", @site.image_url)
-        assert_http_size(132_555, @site.image_url)
+        assert_downloaded(132_555, @site.image_url)
       end
 
       should "get the canonical url" do
@@ -53,7 +53,7 @@ module Sources
       should "get the preview url" do
         assert_equal("https://pic.nijie.net/03/__rs_l170x170/nijie_picture/728995_20170505014820_0.jpg", @site.preview_url)
         assert_equal([@site.preview_url], @site.preview_urls)
-        assert_http_exists(@site.preview_url)
+        assert_downloaded(132_555, @site.preview_url)
       end
 
       should "get the profile" do
@@ -205,8 +205,8 @@ module Sources
         assert_equal("https://nijie.info/members.php?id=236014", site.profile_url)
         assert_nothing_raised { site.to_h }
 
-        assert_http_size(3619, site.image_url)
-        assert_http_exists(site.preview_url)
+        assert_downloaded(3619, site.image_url)
+        assert_downloaded(3619, site.preview_url)
       end
     end