Anonymous user should have their icon (#26699).

Patch by Go MAEDA.

git-svn-id: http://svn.redmine.org/redmine/trunk@17150 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/helpers/application_helper.rb

@@ -1405,7 +1405,13 @@ module ApplicationHelper
       elsif user.to_s =~ %r{<(.+?)>}
         email = $1
       end
-      return gravatar(email.to_s.downcase, options) unless email.blank? rescue nil
+      if email.present?
+        gravatar(email.to_s.downcase, options) rescue nil
+      else
+        image_tag 'anonymous.png',
+                  GravatarHelper::DEFAULT_OPTIONS
+                    .except(:default, :rating, :ssl).merge(options)
+      end
     else
       ''
     end

test/helpers/application_helper_test.rb

@@ -1302,6 +1302,7 @@ RAW
   end
 
   def test_avatar_enabled
+    tag_for_anonymous_re = %r{src="/images/anonymous.png(\?\d+)?"}
     with_settings :gravatar_enabled => '1' do
       assert avatar(User.find_by_mail('jsmith@somenet.foo')).include?(Digest::MD5.hexdigest('jsmith@somenet.foo'))
       assert avatar('jsmith <jsmith@somenet.foo>').include?(Digest::MD5.hexdigest('jsmith@somenet.foo'))
@@ -1313,8 +1314,10 @@ RAW
       # The default class of the img tag should be gravatar
       assert avatar('jsmith <jsmith@somenet.foo>').include?('class="gravatar"')
       assert !avatar('jsmith <jsmith@somenet.foo>', :class => 'picture').include?('class="gravatar"')
-      assert_nil avatar('jsmith')
-      assert_nil avatar(nil)
+      assert_match tag_for_anonymous_re, avatar('jsmith')
+      assert_match tag_for_anonymous_re, avatar(nil)
+      # Avatar for anonymous user
+      assert_match tag_for_anonymous_re, avatar(User.anonymous)
     end
   end