finishing tags. writing specs for ruby tag API

lib/noah/models/tags.rb

@@ -2,6 +2,7 @@ module Noah
   class Tag < Model
     attribute :name
     attribute :members
+    index :members
     index :name
 
     def validate
@@ -12,6 +13,7 @@ module Noah
 
     def members=(member)
       self.key[:members].sadd(member.key)
+      member.tag! self.name unless member.tags.member?(self)
     end
 
     def members

spec/tag_spec.rb

+require File.expand_path(File.dirname(__FILE__) + '/spec_helper')
+
+describe "Using the Tag Model", :reset_redis => true do
+  before(:each) do
+    Ohm.redis.flushdb
+    @tags1 = ["production", "databases", "in-service"]
+    @tags2 = "out-of-service"
+    @host = Noah::Host.create(:name => 'tagged_host', :status => 'up')
+    @service = Noah::Service.create(:name => 'tagged_service', :status => 'down', :host_id => @host.id)
+    @application = Noah::Application.create(:name => 'tagged_application')
+    @configuration = Noah::Configuration.create(:name => 'tagged_configuration')
+    @ephemeral = Noah::Ephemeral.create(:path => '/tagged/ephemeral')
+  end
+  after(:each) do
+    Ohm.redis.flushdb
+  end  
+  describe "should" do
+    it "create a new Noah::Tag" do
+      t = Noah::Tag.new(:name => 'some_tag')
+      t.valid?.should == true
+      t.save
+      t.is_new?.should == true
+      b = Noah::Tag.find(:name => 'some_tag').first
+      b.should == t
+    end
+    it "create a new Noah::Tag and add a member" do
+      t = Noah::Tag.create(:name => 'some_tag')
+      t.members = @host
+      @host.tags.member?(t).should == true
+      t.members[:hosts].size.should == 1
+      t.members[:hosts].member?(@host.name).should == true
+    end
+    it "tag! an existing object with a single tag" do
+      @host.tag! @tags2
+      t = Noah::Tag.find(:name => @tags2).first
+      @host.tags.member?(t).should == true
+      t.members[:hosts].size.should == 1
+      t.members[:hosts].member?(@host.name).should == true
+    end
+    it "tag! an existing object with an array of tags" do
+      @host.tag! @tags1
+      @tags1.each do |tag|
+        t = Noah::Tag.find(:name => tag).first
+        @host.tags.member?(t).should == true
+        t.members[:hosts].size.should == 1
+        t.members[:hosts].member?(@host.name).should == true
+      end
+      Noah::Tag.all.size.should == 3
+    end
+  end
+
+  describe "should not" do
+    it "should not create a new Noah::Tag without a name" do
+      a = Noah::Tag.create
+      a.valid?.should == false
+      a.errors.should == [[:name, :not_present]]
+    end
+  end
+end