set default Faraday::Connection#path_prefix

lib/faraday/connection.rb

@@ -8,20 +8,26 @@ module Faraday
 
     def initialize(url = nil)
       if url
-        uri          = URI.parse(url)
-        @host        = uri.host
-        @port        = uri.port
-        @path_prefix = uri.path if !uri.path.empty?
+        uri              = URI.parse(url)
+        self.host        = uri.host
+        self.port        = uri.port
+        self.path_prefix = uri.path
       end
     end
 
+    
+    # Override in a subclass, or include an adapter
+    #
+    #   def _get(uri, headers)
+    #   end
+    #
     def get(url, params = {}, headers = {})
       _get(build_uri(url, params), headers)
     end
 
     def path_prefix=(value)
       if value
-        value.chomp! "/"
+        value.chomp!  "/"
         value.replace "/#{value}" if value !~ /^\//
       end
       @path_prefix = value
@@ -32,7 +38,7 @@ module Faraday
       uri.host  ||= @host
       uri.port  ||= @port
       if @path_prefix && uri.path !~ /^\//
-        uri.path = "#{@path_prefix}/#{uri.path}"
+        uri.path = "#{@path_prefix.size > 1 ? @path_prefix : nil}/#{uri.path}"
       end
       uri.query   = params_to_query(params)
       uri
@@ -43,9 +49,5 @@ module Faraday
         memo << "#{URI.escape(key)}=#{URI.escape(val)}"
       end.join("&")
     end
-
-    def _get(uri, headers)
-      raise NotImplementedError
-    end
   end
 end

test/connection_test.rb

@@ -19,7 +19,7 @@ class ConnectionTest < Faraday::TestCase
 
     it "parses nil @path_prefix out of given url" do
       conn = TestConnection.new "http://sushi.com"
-      assert_nil conn.path_prefix
+      assert_equal '/', conn.path_prefix
     end
 
     it "parses @path_prefix out of given url" do
@@ -50,6 +50,13 @@ class ConnectionTest < Faraday::TestCase
       assert_equal '/fish/sake.html', uri.path
     end
 
+    it "uses '/' Connection#path_prefix to customize the path" do
+      conn = TestConnection.new
+      conn.path_prefix = '/'
+      uri = conn.build_uri("sake.html")
+      assert_equal '/sake.html', uri.path
+    end
+
     it "forces Connection#path_prefix to be absolute" do
       conn = TestConnection.new
       conn.path_prefix = 'fish'