How to make your stubs bleed over into other files...

stub_fail.rb

## BAD

shared_examples_for 'NetSuite_BaseRequest' do
  before(:each) do
    @obj.stub(:endpoint => "http://test.test.com")
    @obj.stub(:send_request) do |arg| # We're not testing requests being sent...
      arg # Return the request that was to be sent.
    end
  end

  describe "#get" do
    it "places parameters in the request uri" do
      @obj.get({:id => "test"}).path.should == "/?id=test"
    end

    it "sends a Get request" do
      @obj.get({:id => "test"}).is_a?(Net::HTTP::Get).should == true
    end
  end
end

## GOOD
shared_examples_for 'NetSuite_BaseRequest' do
  describe NetSuite::BaseRequest do
    before(:each) do
      @obj.stub(:endpoint => "http://test.test.com")
      @obj.stub(:send_request) do |arg| # We're not testing requests being sent...
        arg # Return the request that was to be sent.
      end
    end

    describe "#get" do
      it "places parameters in the request uri" do
        @obj.get({:id => "test"}).path.should == "/?id=test"
      end

      it "sends a Get request" do
        @obj.get({:id => "test"}).is_a?(Net::HTTP::Get).should == true
      end
    end
  end
end