gistfile1.rb

    describe "updating matching categories on project save", :focus do
      
      let(:project) { Factory.build :project }
      
      before(:each) do
        @old_matching_categories = project.matching_categories
      end
      
      it "should update the matching categories after updating the category and saving the project" do
        project.category = "C01"
        project.save :validate => false # saving without validation because we know the project is not complete, does not matter for that test
        
        binding.pry
        project.category should eq "C01"
        project.matching_categories should_not eq @old_matching_categories
        project.should_receive(:build_matching_categories).once
      end
      
      it "should not update matching categories by just saving the project without changing the category" do
        project.name = "factory_project_updated"
        project.save :validate => false # saving without validation because we know the project is not complete, does not matter for that test
        
        project.matching_categories should eq @old_matching_categories
        project.should_not_receive(:build_matching_categories).once
      end
      
    end