Redefined const_defined? on the replaced Net::HTTP so that it returns…

… true if constant is defined on the original Net::HTTP.

This is only for Ruby 1.8 since Ruby 1.9 by default looks for a const in ancestors.

lib/webmock/http_lib_adapters/net_http.rb

@@ -74,6 +74,12 @@ def socket_type_with_webmock
       end
       alias_method :socket_type_without_webmock, :socket_type
       alias_method :socket_type, :socket_type_with_webmock
+
+      if ::RUBY_VERSION =~ /1.8/
+        def const_defined?(name)
+          super || self.superclass.const_defined?(name)
+        end
+      end
     end
 
     def request_with_webmock(request, body = nil, &block)

spec/net_http_spec.rb

@@ -11,6 +11,10 @@
 
   let(:port){ WebMockServer.instance.port }
 
+  it "should still have const Get defined on replaced Net::HTTP" do
+    Object.const_get("Net").const_get("HTTP").const_defined?("Get").should be_true
+  end
+
   it "should work with block provided" do
     stub_http_request(:get, "www.example.com").to_return(:body => "abc"*100000)
     Net::HTTP.start("www.example.com") { |query| query.get("/") }.body.should == "abc"*100000