added tag alias unit test

test/unit/deleted_post_test.rb

@@ -1,8 +0,0 @@
-require 'test_helper'
-
-class DeletedPostTest < ActiveSupport::TestCase
-  # Replace this with your real tests.
-  test "the truth" do
-    assert true
-  end
-end

test/unit/post_test.rb

@@ -83,9 +83,21 @@ class PostTest < ActiveSupport::TestCase
       post1 = Factory.create(:post, :tag_string => "aaa bbb ccc")
       post2 = Factory.create(:post, :tag_string => "bbb ccc ddd")
       post3 = Factory.create(:post, :tag_string => "ccc ddd eee")
+      user = Factory.create(:user)
       assert_equal(1, Tag.find_by_name("aaa").post_count)
       assert_equal(2, Tag.find_by_name("bbb").post_count)
       assert_equal(3, Tag.find_by_name("ccc").post_count)
+      post3.update_attributes(
+        :tag_string => "xxx",
+        :updater_id => user.id,
+        :updater_ip_addr => "127.0.0.1"
+      )
+      assert_equal(1, Tag.find_by_name("aaa").post_count)
+      assert_equal(2, Tag.find_by_name("bbb").post_count)
+      assert_equal(2, Tag.find_by_name("ccc").post_count)      
+      assert_equal(1, Tag.find_by_name("ddd").post_count)      
+      assert_equal(0, Tag.find_by_name("eee").post_count)
+      assert_equal(1, Tag.find_by_name("xxx").post_count)
     end
 
     should "be counted" do

test/unit/post_version_test.rb

@@ -1,8 +0,0 @@
-require 'test_helper'
-
-class PostVersionTest < ActiveSupport::TestCase
-  # Replace this with your real tests.
-  test "the truth" do
-    assert true
-  end
-end

test/unit/tag_alias_test.rb

@@ -1,8 +1,37 @@
-require 'test_helper'
+require File.dirname(__FILE__) + '/../test_helper'
 
 class TagAliasTest < ActiveSupport::TestCase
-  # Replace this with your real tests.
-  test "the truth" do
-    assert true
+  context "A tag alias" do
+    setup do
+      MEMCACHE.flush_all
+    end
+    
+    should "convert a tag to its normalized version" do
+      tag1 = Factory.create(:tag, :name => "aaa")
+      tag2 = Factory.create(:tag, :name => "bbb")
+      ta = Factory.create(:tag_alias, :antecedent_name => "aaa", :consequent_name => "bbb")
+      normalized_tags = TagAlias.to_aliased(["aaa", "ccc"])
+      assert_equal(["bbb", "ccc"], normalized_tags.sort)
+    end
+    
+    should "update the cache" do
+      tag1 = Factory.create(:tag, :name => "aaa")
+      tag2 = Factory.create(:tag, :name => "bbb")
+      ta = Factory.create(:tag_alias, :antecedent_name => "aaa", :consequent_name => "bbb")
+      assert_equal("bbb", MEMCACHE.get("ta:aaa"))
+    end
+    
+    should "update any affected posts when saved" do
+      assert_equal(0, TagAlias.count)
+      post1 = Factory.create(:post, :tag_string => "aaa bbb")
+      post2 = Factory.create(:post, :tag_string => "ccc ddd")
+      assert_equal("aaa bbb", post1.tag_string)
+      assert_equal("ccc ddd", post2.tag_string)
+      ta = Factory.create(:tag_alias, :antecedent_name => "aaa", :consequent_name => "ccc")
+      post1.reload
+      post2.reload
+      assert_equal("ccc bbb", post1.tag_string)
+      assert_equal("ccc ddd", post2.tag_string)
+    end
   end
 end

test/unit/unapproval_test.rb

@@ -1,8 +0,0 @@
-require 'test_helper'
-
-class PostUnapprovalTest < ActiveSupport::TestCase
-  # Replace this with your real tests.
-  test "the truth" do
-    assert true
-  end
-end