add new tag alias correction helper

test/unit/tag_alias_correction_test.rb

@@ -0,0 +1,59 @@
+require 'test_helper'
+
+class TagAliasTest < ActiveSupport::TestCase
+  context "A tag alias" do
+    setup do
+      @mod = FactoryGirl.create(:moderator_user)
+      CurrentUser.user = @mod
+      CurrentUser.ip_addr = "127.0.0.1"
+      MEMCACHE.flush_all
+      Delayed::Worker.delay_jobs = false
+      @post = FactoryGirl.create(:post, :tag_string => "aaa")
+      @tag_alias = FactoryGirl.create(:tag_alias, :antecedent_name => "aaa", :consequent_name => "bbb")
+    end
+
+    teardown do
+      CurrentUser.user = nil
+      CurrentUser.ip_addr = nil
+    end
+    
+    context "with a bad cache and post counts" do
+      setup do
+        Cache.put("ta:aaa", "zzz")
+        Tag.update_all("post_count = -3", "name = 'aaa'")
+        @correction = TagAliasCorrection.new(@tag_alias.id)
+      end
+      
+      should "have the correct statistics hash" do
+        assert_equal("zzz", @correction.statistics_hash["antecedent_cache"])
+        assert_nil(@correction.statistics_hash["consequent_cache"])
+        assert_equal(-3, @correction.statistics_hash["antecedent_count"])
+        assert_nil(@correction.statistics_hash["consequent_count"])
+      end
+      
+      should "render to json" do
+        assert_nothing_raised do
+          @correction.to_json
+        end
+        
+        assert_nothing_raised do
+          JSON.parse(@correction.to_json)
+        end
+      end
+      
+      context "that is fixed" do
+        setup do
+          @correction.fix!
+        end
+        
+        should "now have the correct cache" do
+          assert_equal("bbb", Cache.get("ta:aaa"))
+        end
+        
+        should "now have the correct count" do
+          assert_equal(0, Tag.find_by_name("aaa").post_count)
+        end
+      end
+    end
+  end
+end