Write tests for the decorator

Write Tests for Decorator

require 'rails_helper'

   describe ProductDecorator do
     describe '#as_json' do
       let(:product) { stub_model Product, id: 1, name: 'apple', price: 10.0, description: 'green' }

       subject { product.decorate.as_json }

       its([:id]) { should eq 1 }

       its([:name]) { should eq 'apple' }

       its([:price]) { should eq 10.0 }

       its([:description]) { should eq 'green' }
     end
   end