UrlFetchTitle: タイムアウトエラー表示を実装した

refs #5

lib/rgrb/plugin/url_fetch_title/generator.rb

@@ -2,6 +2,7 @@
 
 require 'uri'
 require 'socket'
+require 'net/http'
 require 'mechanize'
 require 'active_support'
 require 'active_support/core_ext/numeric/conversions'
@@ -117,6 +118,8 @@ def fetch_title(url)
               end
           rescue SocketError
             body = '(サーバーに接続できませんでした)'
+          rescue Net::HTTP::Persistent::Error
+            body = '(タイムアウト)'
           rescue Mechanize::ResponseCodeError => response_code_error
             response_code = response_code_error.response_code.to_i
             reason_phrase =

spec/rgrb/plugin/url_fetch_title/generator_spec.rb

@@ -111,6 +111,21 @@
       end
     end
 
+    context 'タイムアウトした場合' do
+      let(:url) { 'http://example.net/very_very_heavy' }
+
+      before do
+        stub_request(:get, url).to_timeout
+      end
+
+      subject { generator.fetch_title(url) }
+      it 'タイムアウトしたことを示すエラーメッセージを返す' do
+        expect(subject).to eq(
+          "#{default_prefix}(タイムアウト)#{default_suffix}"
+        )
+      end
+    end
+
     context '401 Unauthorized' do
       let(:url) { 'http://example.net/need_login' }