get parallel tests running on net/http (parallel methods are a no-op)

lib/faraday.rb

@@ -19,7 +19,7 @@ module Faraday
     end
 
     def self.loaded_adapters
-      adapters.map { |c| const_get(c) }.select { |a| a.loaded }
+      adapters.map { |c| const_get(c) }.select { |a| a.loaded? }
     end
   end
 end

lib/faraday/adapter/net_http.rb

@@ -2,7 +2,8 @@ require 'net/http'
 module Faraday
   module Adapter
     module NetHttp
-      def self.loaded() true end
+      extend Faraday::Connection::Options
+      self.loaded = true
 
       def _get(uri, request_headers)
         http      = Net::HTTP.new(uri.host, uri.port)

lib/faraday/adapter/typhoeus.rb

@@ -2,9 +2,7 @@
 module Faraday
   module Adapter
     module Typhoeus
-      class << self
-        attr_accessor :loaded
-      end
+      extend Faraday::Connection::Options
 
       begin
         require 'typhoeus'

lib/faraday/connection.rb

@@ -1,6 +1,15 @@
 require 'addressable/uri'
 module Faraday
   class Connection
+    module Options
+      def loaded()           @loaded             end
+      def loaded=(v)         @loaded = v         end
+      def supports_async()   @supports_async     end
+      def supports_async=(v) @supports_async = v end
+      alias loaded?         loaded
+      alias supports_async? supports_async
+    end
+
     include Addressable
 
     attr_accessor :host, :port, :scheme
@@ -31,6 +40,22 @@ module Faraday
       @response_class || Response
     end
 
+    def in_parallel?
+      !!@parallel_manager
+    end
+    
+    def in_parallel(options = {})
+      @parallel_manager = true
+      yield
+      @parallel_manager = false
+    end
+    
+    def setup_parallel_manager(options = {})
+    end
+    
+    def run_parallel_requests
+    end
+
     def path_prefix=(value)
       if value
         value.chomp!  "/"

test/adapter/typhoeus_test.rb

@@ -1,6 +1,6 @@
 require File.expand_path(File.join(File.dirname(__FILE__), '..', 'helper'))
 
-if Faraday::Adapter::Typhoeus.loaded
+if Faraday::Adapter::Typhoeus.loaded?
   class TyphoeusTest < Faraday::TestCase
     describe "#parse_response_headers" do
       before do

test/adapter_test.rb

@@ -24,12 +24,10 @@ class AdapterTest < Faraday::TestCase
         assert_equal 'text/html', @connection.get('hello_world').headers['content-type']
       end
     end
-  end
 
-  if Faraday::Adapter::Typhoeus.loaded
-    describe "async Typhoeus requests" do
+    describe "async requests" do
       before do
-        @connection.extend Faraday::Adapter::Typhoeus
+        @connection.extend adapter
       end
 
       it "clears parallel manager after running a single request" do
@@ -47,8 +45,10 @@ class AdapterTest < Faraday::TestCase
           resp1 = @connection.get('json')
           resp2 = @connection.get('json')
           assert @connection.in_parallel?
-          assert_nil resp1.body
-          assert_nil resp2.body
+          if adapter.supports_async?
+            assert_nil resp1.body
+            assert_nil resp2.body
+          end
         end
         assert !@connection.in_parallel?
         assert_equal [1,2,3], resp1.body