adding link spec. fixed bug in link path

lib/noah/models/link.rb

@@ -30,6 +30,7 @@ module Noah
     def validate
       super
       assert_present :path
+      assert_unique :path
     end
 
     def to_hash

spec/link_spec.rb

+require File.expand_path(File.dirname(__FILE__) + '/spec_helper')
+
+describe "Using the Link Model", :reset_redis => true do
+  before(:each) do
+    Ohm.redis.flushdb
+    @link = "/myorg"
+    @host = Noah::Host.create(:name => 'linked_host', :status => 'up')
+    @service = Noah::Service.create(:name => 'linked_service', :status => 'down', :host_id => @host.id)
+    @application = Noah::Application.create(:name => "linked_application")
+    @configuration = Noah::Configuration.create(:name => "linked_configuration", :format => "string", :body => "some_string")
+    @ephemeral = Noah::Ephemeral.create(:path => "/linked/ephemeral")
+  end
+  after(:each) do
+    Ohm.redis.flushdb
+  end
+
+  describe "should" do
+    it "create a new Noah::Link" do
+      l = Noah::Link.new(:path => @link)
+      l.valid?.should == true
+      l.save
+      l.is_new?.should == true
+      xl = Noah::Link.find(:path => @link).first
+      xl.should == l
+    end
+    it "create a new Noah::Link and add a single member" do
+      l = Noah::Link.create(:path => @link)
+      l.nodes = @host
+      @host.links.member?(l).should == true
+      @host.links.size.should == 1
+      l.nodes.size.should == 1
+      l.nodes.member?(@host.key).should == true
+    end
+
+    it "create a new Noah::Link and add multiple members" do
+      l = Noah::Link.create(:path => @link)
+      l.nodes = [@host, @service, @application, @configuration, @ephemeral]
+      l.nodes.size.should == 5
+      [@host, @service, @application, @configuration, @ephemeral].each do |node|
+        l.nodes.member?(node.key).should == true
+        node.links.member?(l).should == true
+        node.links.size.should == 1
+      end
+    end
+    it "link! an existing object to a single link" do
+      @host.link!(@link)
+      l = Noah::Link.find(:path => @link).first
+      @host.links.member?(l).should == true
+      @host.links.size.should == 1
+      l.nodes.member?(@host.key).should == true
+      l.nodes.size.should == 1
+    end
+    it "return a hash of all nodes" do
+      l = Noah::Link.create(:path => @link)
+      l.nodes = [@host, @service, @application, @configuration, @ephemeral]
+      h = l.to_hash
+      h[:id].should == l.id
+      h[:name].should == l.name
+      h[:updated_at].should == l.updated_at
+      h[:created_at].should == l.created_at
+      h[:hosts].has_key?(@host.name).should == true
+      h[:hosts][@host.name].keys.sort.should == [:id, :status, :tags, :services].sort
+      h[:services].has_key?(@service.name).should == true
+      h[:services][@service.name][@host.name].keys.sort.should == [:id, :status, :tags].sort
+      h[:applications].has_key?(@application.name).should == true
+      h[:applications][@application.name].keys.sort.should == [:id, :tags, :configurations].sort
+      h[:configurations].has_key?(@configuration.name).should == true
+      h[:configurations][@configuration.name].keys.sort.should == [:id, :tags, :format, :body].sort
+      h[:ephemerals].has_key?(@ephemeral.name).should == true
+      h[:ephemerals][@ephemeral.name].keys.sort.should == [:id, :tags, :path, :data].sort
+    end
+  end
+  describe "should not" do
+    it "create a new Noah::Link without a path" do
+      l = Noah::Link.create
+      l.valid?.should == false
+      l.errors.should == [[:path, :not_present]]
+    end
+    it "create a link with a duplicate name" do
+      l = Noah::Link.create(:path => @link)
+      ln = Noah::Link.create(:path => @link)
+      ln.valid?.should == false
+      ln.errors.should == [[:path, :not_unique]]
+    end
+  end
+end
+
+