add vendor back

vendor/rack-test/lib/rack/test/utils.rb

@@ -0,0 +1,75 @@
+module Rack
+  module Test
+
+    module Utils
+      include Rack::Utils
+
+      def requestify(value, prefix = nil)
+        case value
+        when Array
+          value.map do |v|
+            requestify(v, "#{prefix}[]")
+          end.join("&")
+        when Hash
+          value.map do |k, v|
+            requestify(v, prefix ? "#{prefix}[#{escape(k)}]" : escape(k))
+          end.join("&")
+        else
+          "#{prefix}=#{escape(value)}"
+        end
+      end
+
+      module_function :requestify
+
+      def multipart_requestify(params, first=true)
+        p = Hash.new
+
+        params.each do |key, value|
+          k = first ? key.to_s : "[#{key}]"
+
+          if Hash === value
+            multipart_requestify(value, false).each do |subkey, subvalue|
+              p[k + subkey] = subvalue
+            end
+          else
+            p[k] = value
+          end
+        end
+
+        return p
+      end
+
+      module_function :multipart_requestify
+
+      def multipart_body(params)
+        multipart_requestify(params).map do |key, value|
+          if value.respond_to?(:original_filename)
+            ::File.open(value.path, "rb") do |f|
+              f.set_encoding(Encoding::BINARY) if f.respond_to?(:set_encoding)
+
+              <<-EOF
+--#{MULTIPART_BOUNDARY}\r
+Content-Disposition: form-data; name="#{key}"; filename="#{escape(value.original_filename)}"\r
+Content-Type: #{value.content_type}\r
+Content-Length: #{::File.stat(value.path).size}\r
+\r
+#{f.read}\r
+EOF
+            end
+          else
+<<-EOF
+--#{MULTIPART_BOUNDARY}\r
+Content-Disposition: form-data; name="#{key}"\r
+\r
+#{value}\r
+EOF
+          end
+        end.join("")+"--#{MULTIPART_BOUNDARY}--\r"
+      end
+
+      module_function :multipart_body
+
+    end
+
+  end
+end