Add unit test for tag cloud

app/controllers/stats_controller.rb

@@ -555,8 +555,8 @@ class StatsController < ApplicationController
     tags = Stats::TagCloudQuery.new(current_user).result
     @tag_cloud = Stats::TagCloud.new(tags)
 
-    tags_90days = Stats::TagCloudQuery.new(current_user, @cut_off_3months).result
-    @tag_cloud_90days = Stats::TagCloud.new(tags_90days)
+    tags = Stats::TagCloudQuery.new(current_user, @cut_off_3months).result
+    @tag_cloud_90days = Stats::TagCloud.new(tags)
   end
 
   def get_ids_from (actions, week_from, week_to, at_end)

app/models/stats/tag_cloud.rb

@@ -14,7 +14,7 @@ module Stats
     end
 
     def font_size(tag)
-      (9 + 2*(tag.count.to_i-min)/divisor)
+      (9 + 2*(tag.count-min)/divisor)
     end
 
     private

test/minimal_test_helper.rb

@@ -0,0 +1,7 @@
+require 'simplecov'
+SimpleCov.start 'rails'
+
+ENV["RAILS_ENV"] = "test"
+require 'test/unit'
+
+$:.unshift File.dirname(File.dirname(__FILE__))

test/test_helper.rb

@@ -1,7 +1,4 @@
-require 'simplecov'
-SimpleCov.start 'rails'
-
-ENV["RAILS_ENV"] = "test"
+require File.expand_path('../minimal_test_helper', __FILE__)
 require File.expand_path('../../config/environment', __FILE__)
 require 'rails/test_help'
 

test/unit/tag_cloud_test.rb

@@ -0,0 +1,23 @@
+require File.expand_path(File.dirname(__FILE__) + '/../minimal_test_helper')
+require 'app/models/stats/tag_cloud'
+
+class TagCloudTest < Test::Unit::TestCase
+
+  FakeTag = Struct.new(:name, :count)
+
+  def test_tags_get_sorted_alphabetically
+    tags = [FakeTag.new("bee", 1), FakeTag.new("See", 10), FakeTag.new("aye", 100)]
+
+    assert_equal %w(aye bee See), Stats::TagCloud.new(tags).tags.map(&:name)
+  end
+
+  def test_tag_font_size
+    tags = [FakeTag.new("bee", 1), FakeTag.new("See", 10), FakeTag.new("aye", 100)]
+    cloud = Stats::TagCloud.new(tags)
+
+    assert_equal 9, cloud.font_size(FakeTag.new("whatever", 1))
+    assert_equal 18, cloud.font_size(FakeTag.new("whatever", 50))
+    assert_equal 28, cloud.font_size(FakeTag.new("whatever", 100))
+  end
+
+end