adding can method to Active Record for fetching records matching a specific ability, still needs documentation

spec/cancan/active_record_additions_spec.rb

@@ -0,0 +1,22 @@
+require "spec_helper"
+
+describe CanCan::ActiveRecordAdditions do
+  before(:each) do
+    @model_class = Class.new
+    stub(@model_class).where { :where_stub }
+    @model_class.send(:include, CanCan::ActiveRecordAdditions)
+    @ability = Object.new
+    @ability.extend(CanCan::Ability)
+  end
+  
+  it "should call where(:id => nil) when no ability is defined so no records are found" do
+    stub(@model_class).where(:id => nil) { :no_where }
+    @model_class.can(@ability, :read).should == :no_where
+  end
+  
+  it "should call where with matching ability conditions" do
+    @ability.can :read, @model_class, :foo => 1
+    stub(@model_class).where(:foo => 1) { :found_records }
+    @model_class.can(@ability, :read).should == :found_records
+  end
+end