Add recovery option to SAX parser

gems/aws-sdk-core/lib/aws-sdk-core/xml/parser/nokogiri_engine.rb

@@ -12,7 +12,10 @@ def initialize(stack)
         end
 
         def parse(xml)
-          Nokogiri::XML::SAX::Parser.new(self).parse(xml)
+          p = Nokogiri::XML::SAX::Parser.new(self)
+          p.parse(xml) do |ctx|
+            ctx.recovery = true
+          end
         end
 
         def xmldecl(*args); end

gems/aws-sdk-core/spec/aws/xml/parser_spec.rb

@@ -8,20 +8,14 @@ module Xml
     describe Parser do
       [:ox, :oga, :nokogiri, :libxml, :rexml].each do |engine|
         describe("ENGINE: #{engine}") do
-
-          begin
-            Parser.engine = engine
-          rescue LoadError
-            next
-          end
-
           let(:shapes) { ApiHelper.sample_shapes }
 
-          let(:parser) {
+          let(:parser) do
             api = ApiHelper.sample_api(shapes:shapes)
             rules = api.operation(:example_operation).output
+            Parser.engine = engine
             Parser.new(rules)
-          }
+          end
 
           def parse(xml, to_h = true)
             data = parser.parse(xml)
@@ -410,6 +404,11 @@ def parse(xml, to_h = true)
               expect(parse(xml)).to eq(string: 'a', nested: { string: 'b' })
             end
 
+            it 'handles boundary characters' do
+              xml = "<xml><String>foo\bbar</String></xml>"
+              expect(parse(xml)).to eq(string: "foo\bbar")
+            end
+
           end
 
           describe 'xml attributes' do