delegating ControllerResource find to model adapter, uses 'get' for DataMapper - closes #373

spec/cancan/model_adapters/active_record_adapter_spec.rb

@@ -56,6 +56,11 @@ if ENV["MODEL_ADAPTER"].nil? || ENV["MODEL_ADAPTER"] == "active_record"
       CanCan::ModelAdapters::AbstractAdapter.adapter_class(Article).should == CanCan::ModelAdapters::ActiveRecordAdapter
     end
 
+    it "should find record" do
+      article = Article.create!
+      CanCan::ModelAdapters::ActiveRecordAdapter.find(Article, article.id).should == article
+    end
+
     it "should not fetch any records when no abilities are defined" do
       Article.create!
       Article.accessible_by(@ability).should be_empty

spec/cancan/model_adapters/data_mapper_adapter_spec.rb

@@ -36,6 +36,11 @@ if ENV["MODEL_ADAPTER"] == "data_mapper"
       CanCan::ModelAdapters::AbstractAdapter.adapter_class(Article).should == CanCan::ModelAdapters::DataMapperAdapter
     end
 
+    it "should find record" do
+      article = Article.create
+      CanCan::ModelAdapters::DataMapperAdapter.find(Article, article.id).should == article
+    end
+
     it "should not fetch any records when no abilities are defined" do
       Article.create
       Article.accessible_by(@ability).should be_empty

spec/cancan/model_adapters/mongoid_adapter_spec.rb

@@ -36,6 +36,11 @@ if ENV["MODEL_ADAPTER"] == "mongoid"
         CanCan::ModelAdapters::AbstractAdapter.adapter_class(MongoidProject).should == CanCan::ModelAdapters::MongoidAdapter
       end
 
+      it "should find record" do
+        project = MongoidProject.create
+        CanCan::ModelAdapters::MongoidAdapter.find(MongoidProject, project.id).should == project
+      end
+
       it "should compare properties on mongoid documents with the conditions hash" do
         model = MongoidProject.new
         @ability.can :read, MongoidProject, :id => model.id