No commit message

CHANGELOG

@@ -1,3 +1,7 @@
+[23 October 2007]
+
+* Fix tag_cloud when no tags are present.
+
 [22 October 2007]
 
 * Fix find_tagged_with using :match_all and :include.

lib/tags_helper.rb

@@ -1,6 +1,8 @@
 module TagsHelper
   # See the README for an example using tag_cloud.
   def tag_cloud(tags, classes)
+    return if tags.empty?
+
     max_count = tags.sort_by(&:count).last.count.to_f
 
     tags.each do |tag|

test/tags_helper_test.rb

@@ -8,7 +8,7 @@ class TagsHelperTest < Test::Unit::TestCase
   def test_tag_cloud
     cloud_elements = []
 
-    tag_cloud(Post.tag_counts, %w(css1 css2 css3 css4)) do |tag, css_class|
+    tag_cloud Post.tag_counts, %w(css1 css2 css3 css4) do |tag, css_class|
       cloud_elements << [tag, css_class]
     end
 
@@ -19,4 +19,10 @@ def test_tag_cloud
       [tags(:question), "css1"]
     ], cloud_elements
   end
+
+  def test_tag_cloud_when_no_tags
+    tag_cloud SpecialPost.tag_counts, %w(css1) do
+      assert false, "tag_cloud should not yield"
+    end
+  end
 end