received unexpected message :should_recieve with (:update_attributes) -Rspec error for update action

error_message

 Failure/Error: scheme.should_recieve(:update_attributes).and_return(scheme)
       Double "Scheme_1023" received unexpected message :should_recieve with (:update_attributes)

normal_error

 Failure/Error: scheme.should_recieve(:update_attributes).and_return(scheme)
       Double "Scheme_1023" received unexpected message :new with (no args).

rpsec_update_test.rb

  describe "update a scheme" do
    	before { Scheme.stub(:find).and_return(scheme) }
	  	it "find the requested scheme" do
	  		scheme.should_recieve(:update_attributes).and_return(scheme)
	  		put :update, id: scheme.id, scheme:scheme
	  	end
	  	context "with valid scheme details" do
	  		before { scheme.stub(:update_attributes).and_return(true) }
		  	it "displays success message" do 
		  		put :update, id:scheme.id, scheme:scheme
		  		flash[:notice].should_not be_nil
		  	end
		  	it "redirects to index page after update" do 
		  		put :update, id:scheme.id, scheme:scheme
		  		response.should redirect_to portal_schemes_path
		  	end	
		  end
		  context "with invalid attributes" do
  			before { scheme.stub(:update_attributes).and_return(false) }
  			it "error message must be displayed" do
  				put :update, id: scheme.id, scheme:scheme
  				flash[:error].should_not be_nil
  			end
  			it "renders the edit form" do
  				put :update, id: scheme.id, scheme:scheme
  				response.should render_template(:edit)
  			end
  		end
		end

rspec_helper.rb

require 'rubygems'
require 'spork'
#uncomment the following line to use spork with the debugger
#require 'spork/ext/ruby-debug'

Spork.prefork do
  ENV['RAILS_ENV'] ||= 'test'
 
  # Mongoid models reload
  require 'rails/mongoid'
  Spork.trap_class_method(Rails::Mongoid, :load_models)
 
  # Routes and app/ classes reload
  require 'rails/application'
  Spork.trap_method(Rails::Application::RoutesReloader, :reload!)
  Spork.trap_method(Rails::Application, :eager_load!)
 
  # Load railties
  require File.expand_path('../../config/environment', __FILE__)
  Rails.application.railties.all { |r| r.eager_load! }
 
  # General require
  require 'rspec/rails'
  require 'rspec/autorun'
  require 'capybara/rspec'
  require 'database_cleaner'
 
  RSpec.configure do |config|
    config.mock_with :rspec do |configuration|
      configuration.syntax = [:expect, :should]
    end
 
    # Clean up the database
    config.before(:suite) do
      DatabaseCleaner[:mongoid].strategy = :truncation, {:except => %w[users] }
    end
    config.before(:each)  { DatabaseCleaner.clean }
  end
end

Spork.each_run do
  Dir[Rails.root.join("spec/support/**/*.rb")].each { |f| require f }
  Dir.glob(File.dirname(__FILE__) + "/factories/*").each {|factory| require factory }
  FactoryGirl.reload
  I18n.backend.reload!
  Dir[Rails.root.join('spec/views/**/*.rb')].each   {|f| require f}
end