Added failing spec to show a problem with recording request headers b…

…efore the real request is made.

spec/extensions/net_http_spec.rb

@@ -14,6 +14,14 @@ def perform_get_with_returning_block
       end
     end
 
+    it "gets request headers to record, before the real request is made to not record headers 'host' and 'content-type' added during request by Net::HTTP" do
+      VCR::HTTPInteraction.should_receive(:from_net_http_objects) do |_, request, _|
+        request.to_hash.should_not have_key('content-type')
+        request.to_hash.should_not have_key('host')
+      end
+      Net::HTTP.new('example.com', 80).post('/', "")
+    end
+
     it 'calls VCR.record_http_interaction' do
       interaction = VCR::HTTPInteraction.new
       VCR::HTTPInteraction.should_receive(:from_net_http_objects).and_return(interaction)