diff --git a/spec/shared_behaviors/taggable.rb b/spec/shared_behaviors/taggable.rb
index e69de29bb..ac9ad8c39 100644
--- a/spec/shared_behaviors/taggable.rb
+++ b/spec/shared_behaviors/taggable.rb
@@ -0,0 +1,64 @@
+#   Copyright (c) 2010, Diaspora Inc.  This file is
+#   licensed under the Affero General Public License version 3 or later.  See
+#   the COPYRIGHT file.
+
+require 'spec_helper'
+
+describe Diaspora::Taggable do
+  shared_examples_for "it is taggable" do
+    include ActionView::Helpers::UrlHelper
+    include Rails.application.routes.url_helpers
+    def controller
+    end
+
+    describe '#format_tags' do
+      before do
+        @str = '#what #hey #vöglein'
+        @object.send(@object.class.field_with_tags_setter, @str)
+        @object.build_tags
+        @object.save!
+      end
+      it 'links the tag to /p' do
+        link = link_to('#vöglein', '/tags/vöglein', :class => 'tag')
+        @object.format_tags(@str).should include(link)
+      end
+      it 'responds to plain_text' do
+        @object.format_tags(@str, :plain_text => true).should == @str
+      end
+    end
+    describe '#build_tags' do
+      it 'builds the tags' do
+        @object.send(@object.class.field_with_tags_setter, '#what')
+        @object.build_tags
+        @object.tag_list.should == ['what']
+        lambda {
+          @object.save
+        }.should change{@object.tags.count}.by(1)
+      end
+    end
+    describe '#tag_strings' do
+      it 'returns a string for every #thing' do
+        str = '#what #hey #that"smybike. #@hey ##boo # #THATWASMYBIKE #vöglein #hey#there #135440we #abc/23 ###'
+        arr = ['what', 'hey', 'that', 'THATWASMYBIKE', 'vöglein', '135440we', 'abc']
+
+        @object.send(@object.class.field_with_tags_setter, str)
+        @object.tag_strings.should =~ arr
+      end
+      it 'returns no duplicates' do
+        str = '#what #what #what #whaaaaaaaaaat'
+        arr = ['what','whaaaaaaaaaat']
+
+        @object.send(@object.class.field_with_tags_setter, str)
+        @object.tag_strings.should =~ arr
+      end
+      it 'is case insensitive' do
+        str = '#what #wHaT #WHAT'
+        arr = ['what']
+
+        @object.send(@object.class.field_with_tags_setter, str)
+        @object.tag_strings.should =~ arr
+      end
+    end
+  end
+end
+