(FM-7726) deep symbolize all keys when loading credentials

lib/puppet/resource_api/transport/wrapper.rb

@@ -11,7 +11,7 @@ def initialize(name, url_or_config)
       url = URI.parse(url_or_config)
       raise "Unexpected url '#{url_or_config}' found. Only file:/// URLs for configuration supported at the moment." unless url.scheme == 'file'
       raise "Trying to load config from '#{url.path}, but file does not exist." if url && !File.exist?(url.path)
-      config = (Hocon.load(url.path, syntax: Hocon::ConfigSyntax::HOCON) || {}).map { |k, v| [k.to_sym, v] }.to_h
+      config = self.class.deep_symbolize(Hocon.load(url.path, syntax: Hocon::ConfigSyntax::HOCON) || {})
     else
       config = url_or_config
     end
@@ -38,4 +38,11 @@ def method_missing(method_name, *args, &block)
       super
     end
   end
+
+  # From https://stackoverflow.com/a/11788082/4918
+  def self.deep_symbolize(obj)
+    return obj.each_with_object({}) { |(k, v), memo| memo[k.to_sym] = deep_symbolize(v); } if obj.is_a? Hash
+    return obj.each_with_object([]) { |v, memo| memo << deep_symbolize(v); } if obj.is_a? Array
+    obj
+  end
 end

spec/puppet/resource_api/transport/wrapper_spec.rb

@@ -11,7 +11,7 @@
         it 'will not throw an error' do
           allow(File).to receive(:exist?).and_return(true)
           expect(Puppet::ResourceApi::Transport).to receive(:connect)
-          expect(Hocon).to receive(:load)
+          expect(Hocon).to receive(:load).with('/etc/credentials', any_args).and_return('foo' => %w[a b], 'bar' => 2)
           expect { described_class.new('wibble', url) }.not_to raise_error
         end
       end